code: /*************************************************************************/
  /*  node_3d_editor_plugin.cpp                                            */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #include "node_3d_editor_plugin.h"
  
  #include "core/input/input_filter.h"
  #include "core/math/camera_matrix.h"
  #include "core/os/keyboard.h"
  #include "core/print_string.h"
  #include "core/project_settings.h"
  #include "core/sort_array.h"
  #include "editor/debugger/editor_debugger_node.h"
  #include "editor/editor_node.h"
  #include "editor/editor_scale.h"
  #include "editor/editor_settings.h"
  #include "editor/node_3d_editor_gizmos.h"
  #include "editor/plugins/animation_player_editor_plugin.h"
  #include "editor/plugins/script_editor_plugin.h"
  #include "scene/3d/camera_3d.h"
  #include "scene/3d/collision_shape_3d.h"
  #include "scene/3d/mesh_instance_3d.h"
  #include "scene/3d/physics_body_3d.h"
  #include "scene/3d/visual_instance_3d.h"
  #include "scene/gui/viewport_container.h"
  #include "scene/resources/packed_scene.h"
  #include "scene/resources/surface_tool.h"
  #include "servers/display_server.h"
  
  #define DISTANCE_DEFAULT 4
  
  #define GIZMO_ARROW_SIZE 0.35
  #define GIZMO_RING_HALF_WIDTH 0.1
  #define GIZMO_SCALE_DEFAULT 0.15
  #define GIZMO_PLANE_SIZE 0.2
  #define GIZMO_PLANE_DST 0.3
  #define GIZMO_CIRCLE_SIZE 1.1
  #define GIZMO_SCALE_OFFSET (GIZMO_CIRCLE_SIZE + 0.3)
  #define GIZMO_ARROW_OFFSET (GIZMO_CIRCLE_SIZE + 0.3)
  
  #define ZOOM_MIN_DISTANCE 0.001
  #define ZOOM_MULTIPLIER 1.08
  #define ZOOM_INDICATOR_DELAY_S 1.5
  
  #define FREELOOK_MIN_SPEED 0.01
  #define FREELOOK_SPEED_MULTIPLIER 1.08
  
  #define MIN_Z 0.01
  #define MAX_Z 1000000.0
  
  #define MIN_FOV 0.01
  #define MAX_FOV 179
  
  void ViewportRotationControl::_notification(int p_what) {
  
  	if (p_what == NOTIFICATION_ENTER_TREE) {
  		axis_menu_options.clear();
  		axis_menu_options.push_back(Node3DEditorViewport::VIEW_RIGHT);
  		axis_menu_options.push_back(Node3DEditorViewport::VIEW_TOP);
  		axis_menu_options.push_back(Node3DEditorViewport::VIEW_FRONT);
  		axis_menu_options.push_back(Node3DEditorViewport::VIEW_LEFT);
  		axis_menu_options.push_back(Node3DEditorViewport::VIEW_BOTTOM);
  		axis_menu_options.push_back(Node3DEditorViewport::VIEW_REAR);
  
  		axis_colors.clear();
  		axis_colors.push_back(get_theme_color("axis_x_color", "Editor"));
  		axis_colors.push_back(get_theme_color("axis_y_color", "Editor"));
  		axis_colors.push_back(get_theme_color("axis_z_color", "Editor"));
  		update();
  
  		if (!is_connected("mouse_exited", callable_mp(this, &ViewportRotationControl::_on_mouse_exited))) {
  			connect("mouse_exited", callable_mp(this, &ViewportRotationControl::_on_mouse_exited));
  		}
  	}
  
  	if (p_what == NOTIFICATION_DRAW && viewport != nullptr) {
  		_draw();
  	}
  }
  
  void ViewportRotationControl::_draw() {
  	Vector2i center = get_size() / 2.0;
  	float radius = get_size().x / 2.0;
  
  	if (focused_axis > -2 || orbiting) {
  		draw_circle(center, radius, Color(0.5, 0.5, 0.5, 0.25));
  	}
  
  	Vector<Axis2D> axis_to_draw;
  	_get_sorted_axis(axis_to_draw);
  	for (int i = 0; i < axis_to_draw.size(); ++i) {
  		_draw_axis(axis_to_draw[i]);
  	}
  }
  
  void ViewportRotationControl::_draw_axis(const Axis2D &p_axis) {
  	bool focused = focused_axis == p_axis.axis;
  	bool positive = p_axis.axis < 3;
  	bool front = (Math::abs(p_axis.z_axis) <= 0.001 && positive) || p_axis.z_axis > 0.001;
  	int direction = p_axis.axis % 3;
  
  	Color axis_color = axis_colors[direction];
  
  	if (!front) {
  		axis_color = axis_color.darkened(0.4);
  	}
  	Color c = focused ? Color(0.9, 0.9, 0.9) : axis_color;
  
  	if (positive) {
  		Vector2i center = get_size() / 2.0;
  		draw_line(center, p_axis.screen_point, c, 1.5 * EDSCALE);
  	}
  
  	if (front) {
  		String axis_name = direction == 0 ? "X" : (direction == 1 ? "Y" : "Z");
  		draw_circle(p_axis.screen_point, AXIS_CIRCLE_RADIUS, c);
  		draw_char(get_theme_font("rotation_control", "EditorFonts"), p_axis.screen_point + Vector2i(-4, 5) * EDSCALE, axis_name, "", Color(0.3, 0.3, 0.3));
  	} else {
  		draw_circle(p_axis.screen_point, AXIS_CIRCLE_RADIUS * (0.55 + (0.2 * (1.0 + p_axis.z_axis))), c);
  	}
  }
  
  void ViewportRotationControl::_get_sorted_axis(Vector<Axis2D> &r_axis) {
  	Vector2i center = get_size() / 2.0;
  	float radius = get_size().x / 2.0;
  
  	float axis_radius = radius - AXIS_CIRCLE_RADIUS - 2.0 * EDSCALE;
  	Basis camera_basis = viewport->to_camera_transform(viewport->cursor).get_basis().inverse();
  
  	for (int i = 0; i < 3; ++i) {
  		Vector3 axis_3d = camera_basis.get_axis(i);
  		Vector2i axis_vector = Vector2(axis_3d.x, -axis_3d.y) * axis_radius;
  
  		if (Math::abs(axis_3d.z) < 1.0) {
  			Axis2D pos_axis;
  			pos_axis.axis = i;
  			pos_axis.screen_point = center + axis_vector;
  			pos_axis.z_axis = axis_3d.z;
  			r_axis.push_back(pos_axis);
  
  			Axis2D neg_axis;
  			neg_axis.axis = i + 3;
  			neg_axis.screen_point = center - axis_vector;
  			neg_axis.z_axis = -axis_3d.z;
  			r_axis.push_back(neg_axis);
  		} else {
  			// Special case when the camera is aligned with one axis
  			Axis2D axis;
  			axis.axis = i + (axis_3d.z < 0 ? 0 : 3);
  			axis.screen_point = center;
  			axis.z_axis = 1.0;
  			r_axis.push_back(axis);
  		}
  	}
  
  	r_axis.sort_custom<Axis2DCompare>();
  }
  
  void ViewportRotationControl::_gui_input(Ref<InputEvent> p_event) {
  	const Ref<InputEventMouseButton> mb = p_event;
  	if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT) {
  		Vector2 pos = mb->get_position();
  		if (mb->is_pressed()) {
  			if (pos.distance_to(get_size() / 2.0) < get_size().x / 2.0) {
  				orbiting = true;
  			}
  		} else {
  			if (focused_axis > -1) {
  				viewport->_menu_option(axis_menu_options[focused_axis]);
  				_update_focus();
  			}
  			orbiting = false;
  		}
  	}
  
  	const Ref<InputEventMouseMotion> mm = p_event;
  	if (mm.is_valid()) {
  		if (orbiting) {
  			viewport->_nav_orbit(mm, viewport->_get_warped_mouse_motion(mm));
  			focused_axis = -1;
  		} else {
  			_update_focus();
  		}
  	}
  }
  
  void ViewportRotationControl::_update_focus() {
  	int original_focus = focused_axis;
  	focused_axis = -2;
  	Vector2 mouse_pos = get_local_mouse_position();
  
  	if (mouse_pos.distance_to(get_size() / 2.0) < get_size().x / 2.0) {
  		focused_axis = -1;
  	}
  
  	Vector<Axis2D> axes;
  	_get_sorted_axis(axes);
  
  	for (int i = 0; i < axes.size(); i++) {
  		const Axis2D &axis = axes[i];
  		if (mouse_pos.distance_to(axis.screen_point) < AXIS_CIRCLE_RADIUS) {
  			focused_axis = axis.axis;
  		}
  	}
  
  	if (focused_axis != original_focus) {
  		update();
  	}
  }
  
  void ViewportRotationControl::_on_mouse_exited() {
  	focused_axis = -2;
  	update();
  }
  
  void ViewportRotationControl::set_viewport(Node3DEditorViewport *p_viewport) {
  	viewport = p_viewport;
  }
  
  void ViewportRotationControl::_bind_methods() {
  	ClassDB::bind_method(D_METHOD("_gui_input"), &ViewportRotationControl::_gui_input);
  }
  
  void Node3DEditorViewport::_update_camera(float p_interp_delta) {
  
  	bool is_orthogonal = camera->get_projection() == Camera3D::PROJECTION_ORTHOGONAL;
  
  	Cursor old_camera_cursor = camera_cursor;
  	camera_cursor = cursor;
  
  	if (p_interp_delta > 0) {
  
  		//-------
  		// Perform smoothing
  
  		if (is_freelook_active()) {
  
  			// Higher inertia should increase "lag" (lerp with factor between 0 and 1)
  			// Inertia of zero should produce instant movement (lerp with factor of 1) in this case it returns a really high value and gets clamped to 1.
  			real_t inertia = EDITOR_GET("editors/3d/freelook/freelook_inertia");
  			inertia = MAX(0.001, inertia);
  			real_t factor = (1.0 / inertia) * p_interp_delta;
  
  			// We interpolate a different point here, because in freelook mode the focus point (cursor.pos) orbits around eye_pos
  			camera_cursor.eye_pos = old_camera_cursor.eye_pos.linear_interpolate(cursor.eye_pos, CLAMP(factor, 0, 1));
  
  			float orbit_inertia = EDITOR_GET("editors/3d/navigation_feel/orbit_inertia");
  			orbit_inertia = MAX(0.0001, orbit_inertia);
  			camera_cursor.x_rot = Math::lerp(old_camera_cursor.x_rot, cursor.x_rot, MIN(1.f, p_interp_delta * (1 / orbit_inertia)));
  			camera_cursor.y_rot = Math::lerp(old_camera_cursor.y_rot, cursor.y_rot, MIN(1.f, p_interp_delta * (1 / orbit_inertia)));
  
  			if (Math::abs(camera_cursor.x_rot - cursor.x_rot) < 0.1) {
  				camera_cursor.x_rot = cursor.x_rot;
  			}
  
  			if (Math::abs(camera_cursor.y_rot - cursor.y_rot) < 0.1) {
  				camera_cursor.y_rot = cursor.y_rot;
  			}
  
  			Vector3 forward = to_camera_transform(camera_cursor).basis.xform(Vector3(0, 0, -1));
  			camera_cursor.pos = camera_cursor.eye_pos + forward * camera_cursor.distance;
  
  		} else {
  
  			//when not being manipulated, move softly
  			float free_orbit_inertia = EDITOR_GET("editors/3d/navigation_feel/orbit_inertia");
  			float free_translation_inertia = EDITOR_GET("editors/3d/navigation_feel/translation_inertia");
  			//when being manipulated, move more quickly
  			float manip_orbit_inertia = EDITOR_GET("editors/3d/navigation_feel/manipulation_orbit_inertia");
  			float manip_translation_inertia = EDITOR_GET("editors/3d/navigation_feel/manipulation_translation_inertia");
  
  			float zoom_inertia = EDITOR_GET("editors/3d/navigation_feel/zoom_inertia");
  
  			//determine if being manipulated
  			bool manipulated = InputFilter::get_singleton()->get_mouse_button_mask() & (2 | 4);
  			manipulated |= InputFilter::get_singleton()->is_key_pressed(KEY_SHIFT);
  			manipulated |= InputFilter::get_singleton()->is_key_pressed(KEY_ALT);
  			manipulated |= InputFilter::get_singleton()->is_key_pressed(KEY_CONTROL);
  
  			float orbit_inertia = MAX(0.00001, manipulated ? manip_orbit_inertia : free_orbit_inertia);
  			float translation_inertia = MAX(0.0001, manipulated ? manip_translation_inertia : free_translation_inertia);
  			zoom_inertia = MAX(0.0001, zoom_inertia);
  
  			camera_cursor.x_rot = Math::lerp(old_camera_cursor.x_rot, cursor.x_rot, MIN(1.f, p_interp_delta * (1 / orbit_inertia)));
  			camera_cursor.y_rot = Math::lerp(old_camera_cursor.y_rot, cursor.y_rot, MIN(1.f, p_interp_delta * (1 / orbit_inertia)));
  
  			if (Math::abs(camera_cursor.x_rot - cursor.x_rot) < 0.1) {
  				camera_cursor.x_rot = cursor.x_rot;
  			}
  
  			if (Math::abs(camera_cursor.y_rot - cursor.y_rot) < 0.1) {
  				camera_cursor.y_rot = cursor.y_rot;
  			}
  
  			camera_cursor.pos = old_camera_cursor.pos.linear_interpolate(cursor.pos, MIN(1.f, p_interp_delta * (1 / translation_inertia)));
  			camera_cursor.distance = Math::lerp(old_camera_cursor.distance, cursor.distance, MIN(1.f, p_interp_delta * (1 / zoom_inertia)));
  		}
  	}
  
  	//-------
  	// Apply camera transform
  
  	float tolerance = 0.001;
  	bool equal = true;
  	if (Math::abs(old_camera_cursor.x_rot - camera_cursor.x_rot) > tolerance || Math::abs(old_camera_cursor.y_rot - camera_cursor.y_rot) > tolerance) {
  		equal = false;
  	}
  
  	if (equal && old_camera_cursor.pos.distance_squared_to(camera_cursor.pos) > tolerance * tolerance) {
  		equal = false;
  	}
  
  	if (equal && Math::abs(old_camera_cursor.distance - camera_cursor.distance) > tolerance) {
  		equal = false;
  	}
  
  	if (!equal || p_interp_delta == 0 || is_freelook_active() || is_orthogonal != orthogonal) {
  
  		camera->set_global_transform(to_camera_transform(camera_cursor));
  
  		if (orthogonal) {
  			float half_fov = Math::deg2rad(get_fov()) / 2.0;
  			float height = 2.0 * cursor.distance * Math::tan(half_fov);
  			camera->set_orthogonal(height, 0.1, 8192);
  		} else {
  			camera->set_perspective(get_fov(), get_znear(), get_zfar());
  		}
  
  		update_transform_gizmo_view();
  		rotation_control->update();
  	}
  }
  
  Transform Node3DEditorViewport::to_camera_transform(const Cursor &p_cursor) const {
  	Transform camera_transform;
  	camera_transform.translate(p_cursor.pos);
  	camera_transform.basis.rotate(Vector3(1, 0, 0), -p_cursor.x_rot);
  	camera_transform.basis.rotate(Vector3(0, 1, 0), -p_cursor.y_rot);
  
  	if (orthogonal)
  		camera_transform.translate(0, 0, 4096);
  	else
  		camera_transform.translate(0, 0, p_cursor.distance);
  
  	return camera_transform;
  }
  
  int Node3DEditorViewport::get_selected_count() const {
  
  	Map<Node *, Object *> &selection = editor_selection->get_selection();
  
  	int count = 0;
  
  	for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {
  
  		Node3D *sp = Object::cast_to<Node3D>(E->key());
  		if (!sp)
  			continue;
  
  		Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  		if (!se)
  			continue;
  
  		count++;
  	}
  
  	return count;
  }
  
  float Node3DEditorViewport::get_znear() const {
  
  	return CLAMP(spatial_editor->get_znear(), MIN_Z, MAX_Z);
  }
  float Node3DEditorViewport::get_zfar() const {
  
  	return CLAMP(spatial_editor->get_zfar(), MIN_Z, MAX_Z);
  }
  float Node3DEditorViewport::get_fov() const {
  
  	return CLAMP(spatial_editor->get_fov(), MIN_FOV, MAX_FOV);
  }
  
  Transform Node3DEditorViewport::_get_camera_transform() const {
  
  	return camera->get_global_transform();
  }
  
  Vector3 Node3DEditorViewport::_get_camera_position() const {
  
  	return _get_camera_transform().origin;
  }
  
  Point2 Node3DEditorViewport::_point_to_screen(const Vector3 &p_point) {
  
  	return camera->unproject_position(p_point) * viewport_container->get_stretch_shrink();
  }
  
  Vector3 Node3DEditorViewport::_get_ray_pos(const Vector2 &p_pos) const {
  
  	return camera->project_ray_origin(p_pos / viewport_container->get_stretch_shrink());
  }
  
  Vector3 Node3DEditorViewport::_get_camera_normal() const {
  
  	return -_get_camera_transform().basis.get_axis(2);
  }
  
  Vector3 Node3DEditorViewport::_get_ray(const Vector2 &p_pos) const {
  
  	return camera->project_ray_normal(p_pos / viewport_container->get_stretch_shrink());
  }
  
  void Node3DEditorViewport::_clear_selected() {
  
  	editor_selection->clear();
  }
  
  void Node3DEditorViewport::_select_clicked(bool p_append, bool p_single, bool p_allow_locked) {
  
  	if (clicked.is_null())
  		return;
  
  	Node *node = Object::cast_to<Node>(ObjectDB::get_instance(clicked));
  	Node3D *selected = Object::cast_to<Node3D>(node);
  	if (!selected)
  		return;
  
  	if (!p_allow_locked) {
  		// Replace the node by the group if grouped
  		while (node && node != editor->get_edited_scene()->get_parent()) {
  			Node3D *selected_tmp = Object::cast_to<Node3D>(node);
  			if (selected_tmp && node->has_meta("_edit_group_")) {
  				selected = selected_tmp;
  			}
  			node = node->get_parent();
  		}
  	}
  
  	if (p_allow_locked || !_is_node_locked(selected)) {
  		_select(selected, clicked_wants_append, true);
  	}
  }
  
  void Node3DEditorViewport::_select(Node *p_node, bool p_append, bool p_single) {
  
  	if (!p_append) {
  		editor_selection->clear();
  	}
  
  	if (editor_selection->is_selected(p_node)) {
  		//erase
  		editor_selection->remove_node(p_node);
  	} else {
  
  		editor_selection->add_node(p_node);
  	}
  
  	if (p_single) {
  		if (Engine::get_singleton()->is_editor_hint())
  			editor->call("edit_node", p_node);
  	}
  }
  
  ObjectID Node3DEditorViewport::_select_ray(const Point2 &p_pos, bool p_append, bool &r_includes_current, int *r_gizmo_handle, bool p_alt_select) {
  
  	if (r_gizmo_handle)
  		*r_gizmo_handle = -1;
  
  	Vector3 ray = _get_ray(p_pos);
  	Vector3 pos = _get_ray_pos(p_pos);
  	Vector2 shrinked_pos = p_pos / viewport_container->get_stretch_shrink();
  
  	Vector<ObjectID> instances = RenderingServer::get_singleton()->instances_cull_ray(pos, ray, get_tree()->get_root()->get_world()->get_scenario());
  	Set<Ref<EditorNode3DGizmo>> found_gizmos;
  
  	Node *edited_scene = get_tree()->get_edited_scene_root();
  	ObjectID closest;
  	Node *item = NULL;
  	float closest_dist = 1e20;
  	int selected_handle = -1;
  
  	for (int i = 0; i < instances.size(); i++) {
  
  		Node3D *spat = Object::cast_to<Node3D>(ObjectDB::get_instance(instances[i]));
  
  		if (!spat)
  			continue;
  
  		Ref<EditorNode3DGizmo> seg = spat->get_gizmo();
  
  		if ((!seg.is_valid()) || found_gizmos.has(seg)) {
  			continue;
  		}
  
  		found_gizmos.insert(seg);
  		Vector3 point;
  		Vector3 normal;
  
  		int handle = -1;
  		bool inters = seg->intersect_ray(camera, shrinked_pos, point, normal, &handle, p_alt_select);
  
  		if (!inters)
  			continue;
  
  		float dist = pos.distance_to(point);
  
  		if (dist < 0)
  			continue;
  
  		if (dist < closest_dist) {
  
  			item = Object::cast_to<Node>(spat);
  			while (item->get_owner() && item->get_owner() != edited_scene && !edited_scene->is_editable_instance(item->get_owner())) {
  				item = item->get_owner();
  			}
  
  			closest = item->get_instance_id();
  			closest_dist = dist;
  			selected_handle = handle;
  		}
  	}
  
  	if (!item)
  		return ObjectID();
  
  	if (!editor_selection->is_selected(item) || (r_gizmo_handle && selected_handle >= 0)) {
  
  		if (r_gizmo_handle)
  			*r_gizmo_handle = selected_handle;
  	}
  
  	return closest;
  }
  
  void Node3DEditorViewport::_find_items_at_pos(const Point2 &p_pos, bool &r_includes_current, Vector<_RayResult> &results, bool p_alt_select) {
  
  	Vector3 ray = _get_ray(p_pos);
  	Vector3 pos = _get_ray_pos(p_pos);
  
  	Vector<ObjectID> instances = RenderingServer::get_singleton()->instances_cull_ray(pos, ray, get_tree()->get_root()->get_world()->get_scenario());
  	Set<Ref<EditorNode3DGizmo>> found_gizmos;
  
  	r_includes_current = false;
  
  	for (int i = 0; i < instances.size(); i++) {
  
  		Node3D *spat = Object::cast_to<Node3D>(ObjectDB::get_instance(instances[i]));
  
  		if (!spat)
  			continue;
  
  		Ref<EditorNode3DGizmo> seg = spat->get_gizmo();
  
  		if (!seg.is_valid())
  			continue;
  
  		if (found_gizmos.has(seg))
  			continue;
  
  		found_gizmos.insert(seg);
  		Vector3 point;
  		Vector3 normal;
  
  		int handle = -1;
  		bool inters = seg->intersect_ray(camera, p_pos, point, normal, NULL, p_alt_select);
  
  		if (!inters)
  			continue;
  
  		float dist = pos.distance_to(point);
  
  		if (dist < 0)
  			continue;
  
  		if (editor_selection->is_selected(spat))
  			r_includes_current = true;
  
  		_RayResult res;
  		res.item = spat;
  		res.depth = dist;
  		res.handle = handle;
  		results.push_back(res);
  	}
  
  	if (results.empty())
  		return;
  
  	results.sort();
  }
  
  Vector3 Node3DEditorViewport::_get_screen_to_space(const Vector3 &p_vector3) {
  
  	CameraMatrix cm;
  	if (orthogonal) {
  		cm.set_orthogonal(camera->get_size(), get_size().aspect(), get_znear() + p_vector3.z, get_zfar());
  	} else {
  		cm.set_perspective(get_fov(), get_size().aspect(), get_znear() + p_vector3.z, get_zfar());
  	}
  	Vector2 screen_he = cm.get_viewport_half_extents();
  
  	Transform camera_transform;
  	camera_transform.translate(cursor.pos);
  	camera_transform.basis.rotate(Vector3(1, 0, 0), -cursor.x_rot);
  	camera_transform.basis.rotate(Vector3(0, 1, 0), -cursor.y_rot);
  	camera_transform.translate(0, 0, cursor.distance);
  
  	return camera_transform.xform(Vector3(((p_vector3.x / get_size().width) * 2.0 - 1.0) * screen_he.x, ((1.0 - (p_vector3.y / get_size().height)) * 2.0 - 1.0) * screen_he.y, -(get_znear() + p_vector3.z)));
  }
  
  void Node3DEditorViewport::_select_region() {
  
  	if (cursor.region_begin == cursor.region_end)
  		return; //nothing really
  
  	float z_offset = MAX(0.0, 5.0 - get_znear());
  
  	Vector3 box[4] = {
  		Vector3(
  				MIN(cursor.region_begin.x, cursor.region_end.x),
  				MIN(cursor.region_begin.y, cursor.region_end.y),
  				z_offset),
  		Vector3(
  				MAX(cursor.region_begin.x, cursor.region_end.x),
  				MIN(cursor.region_begin.y, cursor.region_end.y),
  				z_offset),
  		Vector3(
  				MAX(cursor.region_begin.x, cursor.region_end.x),
  				MAX(cursor.region_begin.y, cursor.region_end.y),
  				z_offset),
  		Vector3(
  				MIN(cursor.region_begin.x, cursor.region_end.x),
  				MAX(cursor.region_begin.y, cursor.region_end.y),
  				z_offset)
  	};
  
  	Vector<Plane> frustum;
  
  	Vector3 cam_pos = _get_camera_position();
  
  	for (int i = 0; i < 4; i++) {
  
  		Vector3 a = _get_screen_to_space(box[i]);
  		Vector3 b = _get_screen_to_space(box[(i + 1) % 4]);
  		if (orthogonal) {
  			frustum.push_back(Plane(a, (a - b).normalized()));
  		} else {
  			frustum.push_back(Plane(a, b, cam_pos));
  		}
  	}
  
  	if (!orthogonal) {
  		Plane near(cam_pos, -_get_camera_normal());
  		near.d -= get_znear();
  
  		frustum.push_back(near);
  
  		Plane far = -near;
  		far.d += get_zfar();
  
  		frustum.push_back(far);
  	}
  
  	Vector<ObjectID> instances = RenderingServer::get_singleton()->instances_cull_convex(frustum, get_tree()->get_root()->get_world()->get_scenario());
  	Vector<Node *> selected;
  
  	Node *edited_scene = get_tree()->get_edited_scene_root();
  
  	for (int i = 0; i < instances.size(); i++) {
  
  		Node3D *sp = Object::cast_to<Node3D>(ObjectDB::get_instance(instances[i]));
  		if (!sp || _is_node_locked(sp))
  			continue;
  
  		Node *item = Object::cast_to<Node>(sp);
  		while (item->get_owner() && item->get_owner() != edited_scene && !edited_scene->is_editable_instance(item->get_owner())) {
  			item = item->get_owner();
  		}
  
  		// Replace the node by the group if grouped
  		if (item->is_class("Node3D")) {
  			Node3D *sel = Object::cast_to<Node3D>(item);
  			while (item && item != editor->get_edited_scene()->get_parent()) {
  				Node3D *selected_tmp = Object::cast_to<Node3D>(item);
  				if (selected_tmp && item->has_meta("_edit_group_")) {
  					sel = selected_tmp;
  				}
  				item = item->get_parent();
  			}
  			item = sel;
  		}
  
  		if (selected.find(item) != -1) continue;
  
  		if (_is_node_locked(item)) continue;
  
  		Ref<EditorNode3DGizmo> seg = sp->get_gizmo();
  
  		if (!seg.is_valid())
  			continue;
  
  		if (seg->intersect_frustum(camera, frustum)) {
  			selected.push_back(item);
  		}
  	}
  
  	bool single = selected.size() == 1;
  	for (int i = 0; i < selected.size(); i++) {
  		_select(selected[i], true, single);
  	}
  }
  
  void Node3DEditorViewport::_update_name() {
  
  	String view_mode = orthogonal ? TTR("Orthogonal") : TTR("Perspective");
  
  	if (auto_orthogonal) {
  		view_mode += " [auto]";
  	}
  
  	if (name != "")
  		view_menu->set_text(name + " " + view_mode);
  	else
  		view_menu->set_text(view_mode);
  
  	view_menu->set_size(Vector2(0, 0)); // resets the button size
  }
  
  void Node3DEditorViewport::_compute_edit(const Point2 &p_point) {
  
  	_edit.click_ray = _get_ray(Vector2(p_point.x, p_point.y));
  	_edit.click_ray_pos = _get_ray_pos(Vector2(p_point.x, p_point.y));
  	_edit.plane = TRANSFORM_VIEW;
  	spatial_editor->update_transform_gizmo();
  	_edit.center = spatial_editor->get_gizmo_transform().origin;
  
  	List<Node *> &selection = editor_selection->get_selected_node_list();
  
  	for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  		Node3D *sp = Object::cast_to<Node3D>(E->get());
  		if (!sp)
  			continue;
  
  		Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  		if (!se)
  			continue;
  
  		se->original = se->sp->get_global_gizmo_transform();
  		se->original_local = se->sp->get_local_gizmo_transform();
  	}
  }
  
  static int _get_key_modifier_setting(const String &p_property) {
  
  	switch (EditorSettings::get_singleton()->get(p_property).operator int()) {
  
  		case 0: return 0;
  		case 1: return KEY_SHIFT;
  		case 2: return KEY_ALT;
  		case 3: return KEY_META;
  		case 4: return KEY_CONTROL;
  	}
  	return 0;
  }
  
  static int _get_key_modifier(Ref<InputEventWithModifiers> e) {
  	if (e->get_shift())
  		return KEY_SHIFT;
  	if (e->get_alt())
  		return KEY_ALT;
  	if (e->get_control())
  		return KEY_CONTROL;
  	if (e->get_metakey())
  		return KEY_META;
  	return 0;
  }
  
  bool Node3DEditorViewport::_gizmo_select(const Vector2 &p_screenpos, bool p_highlight_only) {
  
  	if (!spatial_editor->is_gizmo_visible())
  		return false;
  	if (get_selected_count() == 0) {
  		if (p_highlight_only)
  			spatial_editor->select_gizmo_highlight_axis(-1);
  		return false;
  	}
  
  	Vector3 ray_pos = _get_ray_pos(Vector2(p_screenpos.x, p_screenpos.y));
  	Vector3 ray = _get_ray(Vector2(p_screenpos.x, p_screenpos.y));
  
  	Transform gt = spatial_editor->get_gizmo_transform();
  	float gs = gizmo_scale;
  
  	if (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SELECT || spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_MOVE) {
  
  		int col_axis = -1;
  		float col_d = 1e20;
  
  		for (int i = 0; i < 3; i++) {
  
  			Vector3 grabber_pos = gt.origin + gt.basis.get_axis(i) * gs * (GIZMO_ARROW_OFFSET + (GIZMO_ARROW_SIZE * 0.5));
  			float grabber_radius = gs * GIZMO_ARROW_SIZE;
  
  			Vector3 r;
  
  			if (Geometry::segment_intersects_sphere(ray_pos, ray_pos + ray * MAX_Z, grabber_pos, grabber_radius, &r)) {
  				float d = r.distance_to(ray_pos);
  				if (d < col_d) {
  					col_d = d;
  					col_axis = i;
  				}
  			}
  		}
  
  		bool is_plane_translate = false;
  		// plane select
  		if (col_axis == -1) {
  			col_d = 1e20;
  
  			for (int i = 0; i < 3; i++) {
  
  				Vector3 ivec2 = gt.basis.get_axis((i + 1) % 3).normalized();
  				Vector3 ivec3 = gt.basis.get_axis((i + 2) % 3).normalized();
  
  				Vector3 grabber_pos = gt.origin + (ivec2 + ivec3) * gs * (GIZMO_PLANE_SIZE + GIZMO_PLANE_DST);
  
  				Vector3 r;
  				Plane plane(gt.origin, gt.basis.get_axis(i).normalized());
  
  				if (plane.intersects_ray(ray_pos, ray, &r)) {
  
  					float dist = r.distance_to(grabber_pos);
  					if (dist < (gs * GIZMO_PLANE_SIZE)) {
  
  						float d = ray_pos.distance_to(r);
  						if (d < col_d) {
  							col_d = d;
  							col_axis = i;
  
  							is_plane_translate = true;
  						}
  					}
  				}
  			}
  		}
  
  		if (col_axis != -1) {
  
  			if (p_highlight_only) {
  
  				spatial_editor->select_gizmo_highlight_axis(col_axis + (is_plane_translate ? 6 : 0));
  
  			} else {
  				//handle plane translate
  				_edit.mode = TRANSFORM_TRANSLATE;
  				_compute_edit(Point2(p_screenpos.x, p_screenpos.y));
  				_edit.plane = TransformPlane(TRANSFORM_X_AXIS + col_axis + (is_plane_translate ? 3 : 0));
  			}
  			return true;
  		}
  	}
  
  	if (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SELECT || spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_ROTATE) {
  
  		int col_axis = -1;
  		float col_d = 1e20;
  
  		for (int i = 0; i < 3; i++) {
  
  			Plane plane(gt.origin, gt.basis.get_axis(i).normalized());
  			Vector3 r;
  			if (!plane.intersects_ray(ray_pos, ray, &r))
  				continue;
  
  			float dist = r.distance_to(gt.origin);
  
  			if (dist > gs * (GIZMO_CIRCLE_SIZE - GIZMO_RING_HALF_WIDTH) && dist < gs * (GIZMO_CIRCLE_SIZE + GIZMO_RING_HALF_WIDTH)) {
  
  				float d = ray_pos.distance_to(r);
  				if (d < col_d) {
  					col_d = d;
  					col_axis = i;
  				}
  			}
  		}
  
  		if (col_axis != -1) {
  
  			if (p_highlight_only) {
  
  				spatial_editor->select_gizmo_highlight_axis(col_axis + 3);
  			} else {
  				//handle rotate
  				_edit.mode = TRANSFORM_ROTATE;
  				_compute_edit(Point2(p_screenpos.x, p_screenpos.y));
  				_edit.plane = TransformPlane(TRANSFORM_X_AXIS + col_axis);
  			}
  			return true;
  		}
  	}
  
  	if (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SCALE) {
  
  		int col_axis = -1;
  		float col_d = 1e20;
  
  		for (int i = 0; i < 3; i++) {
  
  			Vector3 grabber_pos = gt.origin + gt.basis.get_axis(i) * gs * GIZMO_SCALE_OFFSET;
  			float grabber_radius = gs * GIZMO_ARROW_SIZE;
  
  			Vector3 r;
  
  			if (Geometry::segment_intersects_sphere(ray_pos, ray_pos + ray * MAX_Z, grabber_pos, grabber_radius, &r)) {
  				float d = r.distance_to(ray_pos);
  				if (d < col_d) {
  					col_d = d;
  					col_axis = i;
  				}
  			}
  		}
  
  		bool is_plane_scale = false;
  		// plane select
  		if (col_axis == -1) {
  			col_d = 1e20;
  
  			for (int i = 0; i < 3; i++) {
  
  				Vector3 ivec2 = gt.basis.get_axis((i + 1) % 3).normalized();
  				Vector3 ivec3 = gt.basis.get_axis((i + 2) % 3).normalized();
  
  				Vector3 grabber_pos = gt.origin + (ivec2 + ivec3) * gs * (GIZMO_PLANE_SIZE + GIZMO_PLANE_DST);
  
  				Vector3 r;
  				Plane plane(gt.origin, gt.basis.get_axis(i).normalized());
  
  				if (plane.intersects_ray(ray_pos, ray, &r)) {
  
  					float dist = r.distance_to(grabber_pos);
  					if (dist < (gs * GIZMO_PLANE_SIZE)) {
  
  						float d = ray_pos.distance_to(r);
  						if (d < col_d) {
  							col_d = d;
  							col_axis = i;
  
  							is_plane_scale = true;
  						}
  					}
  				}
  			}
  		}
  
  		if (col_axis != -1) {
  
  			if (p_highlight_only) {
  
  				spatial_editor->select_gizmo_highlight_axis(col_axis + (is_plane_scale ? 12 : 9));
  
  			} else {
  				//handle scale
  				_edit.mode = TRANSFORM_SCALE;
  				_compute_edit(Point2(p_screenpos.x, p_screenpos.y));
  				_edit.plane = TransformPlane(TRANSFORM_X_AXIS + col_axis + (is_plane_scale ? 3 : 0));
  			}
  			return true;
  		}
  	}
  
  	if (p_highlight_only)
  		spatial_editor->select_gizmo_highlight_axis(-1);
  
  	return false;
  }
  
  void Node3DEditorViewport::_surface_mouse_enter() {
  
  	if (!surface->has_focus() && (!get_focus_owner() || !get_focus_owner()->is_text_field()))
  		surface->grab_focus();
  }
  
  void Node3DEditorViewport::_surface_mouse_exit() {
  
  	_remove_preview();
  }
  
  void Node3DEditorViewport::_surface_focus_enter() {
  
  	view_menu->set_disable_shortcuts(false);
  }
  
  void Node3DEditorViewport::_surface_focus_exit() {
  
  	view_menu->set_disable_shortcuts(true);
  }
  bool Node3DEditorViewport ::_is_node_locked(const Node *p_node) {
  	return p_node->has_meta("_edit_lock_") && p_node->get_meta("_edit_lock_");
  }
  void Node3DEditorViewport::_list_select(Ref<InputEventMouseButton> b) {
  
  	_find_items_at_pos(b->get_position(), clicked_includes_current, selection_results, b->get_shift());
  
  	Node *scene = editor->get_edited_scene();
  
  	for (int i = 0; i < selection_results.size(); i++) {
  		Node3D *item = selection_results[i].item;
  		if (item != scene && item->get_owner() != scene && !scene->is_editable_instance(item->get_owner())) {
  			//invalid result
  			selection_results.remove(i);
  			i--;
  		}
  	}
  
  	clicked_wants_append = b->get_shift();
  
  	if (selection_results.size() == 1) {
  
  		clicked = selection_results[0].item->get_instance_id();
  		selection_results.clear();
  
  		if (clicked.is_valid()) {
  			_select_clicked(clicked_wants_append, true, spatial_editor->get_tool_mode() != Node3DEditor::TOOL_MODE_LIST_SELECT);
  			clicked = ObjectID();
  		}
  
  	} else if (!selection_results.empty()) {
  
  		NodePath root_path = get_tree()->get_edited_scene_root()->get_path();
  		StringName root_name = root_path.get_name(root_path.get_name_count() - 1);
  
  		for (int i = 0; i < selection_results.size(); i++) {
  
  			Node3D *spat = selection_results[i].item;
  
  			Ref<Texture2D> icon = EditorNode::get_singleton()->get_object_icon(spat, "Node");
  
  			String node_path = "/" + root_name + "/" + root_path.rel_path_to(spat->get_path());
  
  			int locked = 0;
  			if (_is_node_locked(spat)) {
  				locked = 1;
  			} else {
  				Node *ed_scene = editor->get_edited_scene();
  				Node *node = spat;
  
  				while (node && node != ed_scene->get_parent()) {
  					Node3D *selected_tmp = Object::cast_to<Node3D>(node);
  					if (selected_tmp && node->has_meta("_edit_group_")) {
  						locked = 2;
  					}
  					node = node->get_parent();
  				}
  			}
  
  			String suffix = String();
  			if (locked == 1) {
  				suffix = " (" + TTR("Locked") + ")";
  			} else if (locked == 2) {
  				suffix = " (" + TTR("Grouped") + ")";
  			}
  			selection_menu->add_item((String)spat->get_name() + suffix);
  			selection_menu->set_item_icon(i, icon);
  			selection_menu->set_item_metadata(i, node_path);
  			selection_menu->set_item_tooltip(i, String(spat->get_name()) + "\nType: " + spat->get_class() + "\nPath: " + node_path);
  		}
  
  		selection_menu->set_position(get_screen_transform().xform(b->get_position()));
  		selection_menu->popup();
  	}
  }
  
  void Node3DEditorViewport::_sinput(const Ref<InputEvent> &p_event) {
  
  	if (previewing)
  		return; //do NONE
  
  	{
  		EditorNode *en = editor;
  		EditorPluginList *force_input_forwarding_list = en->get_editor_plugins_force_input_forwarding();
  		if (!force_input_forwarding_list->empty()) {
  			bool discard = force_input_forwarding_list->forward_spatial_gui_input(camera, p_event, true);
  			if (discard)
  				return;
  		}
  	}
  	{
  		EditorNode *en = editor;
  		EditorPluginList *over_plugin_list = en->get_editor_plugins_over();
  		if (!over_plugin_list->empty()) {
  			bool discard = over_plugin_list->forward_spatial_gui_input(camera, p_event, false);
  			if (discard)
  				return;
  		}
  	}
  
  	Ref<InputEventMouseButton> b = p_event;
  
  	if (b.is_valid()) {
  		emit_signal("clicked", this);
  
  		float zoom_factor = 1 + (ZOOM_MULTIPLIER - 1) * b->get_factor();
  		switch (b->get_button_index()) {
  
  			case BUTTON_WHEEL_UP: {
  				if (is_freelook_active())
  					scale_freelook_speed(zoom_factor);
  				else
  					scale_cursor_distance(1.0 / zoom_factor);
  			} break;
  
  			case BUTTON_WHEEL_DOWN: {
  				if (is_freelook_active())
  					scale_freelook_speed(1.0 / zoom_factor);
  				else
  					scale_cursor_distance(zoom_factor);
  			} break;
  
  			case BUTTON_RIGHT: {
  
  				NavigationScheme nav_scheme = (NavigationScheme)EditorSettings::get_singleton()->get("editors/3d/navigation/navigation_scheme").operator int();
  
  				if (b->is_pressed() && _edit.gizmo.is_valid()) {
  					//restore
  					_edit.gizmo->commit_handle(_edit.gizmo_handle, _edit.gizmo_initial_value, true);
  					_edit.gizmo = Ref<EditorNode3DGizmo>();
  				}
  
  				if (_edit.mode == TRANSFORM_NONE && b->is_pressed()) {
  
  					if (b->get_alt()) {
  
  						if (nav_scheme == NAVIGATION_MAYA)
  							break;
  
  						_list_select(b);
  						return;
  					}
  				}
  
  				if (_edit.mode != TRANSFORM_NONE && b->is_pressed()) {
  					//cancel motion
  					_edit.mode = TRANSFORM_NONE;
  
  					List<Node *> &selection = editor_selection->get_selected_node_list();
  
  					for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  						Node3D *sp = Object::cast_to<Node3D>(E->get());
  						if (!sp)
  							continue;
  
  						Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  						if (!se)
  							continue;
  
  						sp->set_global_transform(se->original);
  					}
  					surface->update();
  					set_message(TTR("Transform Aborted."), 3);
  				}
  
  				if (b->is_pressed()) {
  					const int mod = _get_key_modifier(b);
  					if (!orthogonal) {
  						if (mod == _get_key_modifier_setting("editors/3d/freelook/freelook_activation_modifier")) {
  							set_freelook_active(true);
  						}
  					}
  				} else {
  					set_freelook_active(false);
  				}
  
  				if (freelook_active && !surface->has_focus()) {
  					// Focus usually doesn't trigger on right-click, but in case of freelook it should,
  					// otherwise using keyboard navigation would misbehave
  					surface->grab_focus();
  				}
  
  			} break;
  			case BUTTON_MIDDLE: {
  
  				if (b->is_pressed() && _edit.mode != TRANSFORM_NONE) {
  
  					switch (_edit.plane) {
  
  						case TRANSFORM_VIEW: {
  
  							_edit.plane = TRANSFORM_X_AXIS;
  							set_message(TTR("X-Axis Transform."), 2);
  							name = "";
  							_update_name();
  						} break;
  						case TRANSFORM_X_AXIS: {
  
  							_edit.plane = TRANSFORM_Y_AXIS;
  							set_message(TTR("Y-Axis Transform."), 2);
  
  						} break;
  						case TRANSFORM_Y_AXIS: {
  
  							_edit.plane = TRANSFORM_Z_AXIS;
  							set_message(TTR("Z-Axis Transform."), 2);
  
  						} break;
  						case TRANSFORM_Z_AXIS: {
  
  							_edit.plane = TRANSFORM_VIEW;
  							set_message(TTR("View Plane Transform."), 2);
  
  						} break;
  						case TRANSFORM_YZ:
  						case TRANSFORM_XZ:
  						case TRANSFORM_XY: {
  						} break;
  					}
  				}
  			} break;
  			case BUTTON_LEFT: {
  
  				if (b->is_pressed()) {
  
  					NavigationScheme nav_scheme = (NavigationScheme)EditorSettings::get_singleton()->get("editors/3d/navigation/navigation_scheme").operator int();
  					if ((nav_scheme == NAVIGATION_MAYA || nav_scheme == NAVIGATION_MODO) && b->get_alt()) {
  						break;
  					}
  
  					if (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_LIST_SELECT) {
  						_list_select(b);
  						break;
  					}
  
  					_edit.mouse_pos = b->get_position();
  					_edit.snap = spatial_editor->is_snap_enabled();
  					_edit.mode = TRANSFORM_NONE;
  
  					//gizmo has priority over everything
  
  					bool can_select_gizmos = true;
  
  					{
  						int idx = view_menu->get_popup()->get_item_index(VIEW_GIZMOS);
  						can_select_gizmos = view_menu->get_popup()->is_item_checked(idx);
  					}
  
  					if (can_select_gizmos && spatial_editor->get_selected()) {
  
  						Ref<EditorNode3DGizmo> seg = spatial_editor->get_selected()->get_gizmo();
  						if (seg.is_valid()) {
  							int handle = -1;
  							Vector3 point;
  							Vector3 normal;
  							bool inters = seg->intersect_ray(camera, _edit.mouse_pos, point, normal, &handle, b->get_shift());
  							if (inters && handle != -1) {
  
  								_edit.gizmo = seg;
  								_edit.gizmo_handle = handle;
  								_edit.gizmo_initial_value = seg->get_handle_value(handle);
  								break;
  							}
  						}
  					}
  
  					if (_gizmo_select(_edit.mouse_pos))
  						break;
  
  					clicked = ObjectID();
  					clicked_includes_current = false;
  
  					if ((spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SELECT && b->get_control()) || spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_ROTATE) {
  
  						/* HANDLE ROTATION */
  						if (get_selected_count() == 0)
  							break; //bye
  						//handle rotate
  						_edit.mode = TRANSFORM_ROTATE;
  						_compute_edit(b->get_position());
  						break;
  					}
  
  					if (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_MOVE) {
  
  						if (get_selected_count() == 0)
  							break; //bye
  						//handle translate
  						_edit.mode = TRANSFORM_TRANSLATE;
  						_compute_edit(b->get_position());
  						break;
  					}
  
  					if (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SCALE) {
  
  						if (get_selected_count() == 0)
  							break; //bye
  						//handle scale
  						_edit.mode = TRANSFORM_SCALE;
  						_compute_edit(b->get_position());
  						break;
  					}
  
  					// todo scale
  
  					int gizmo_handle = -1;
  
  					clicked = _select_ray(b->get_position(), b->get_shift(), clicked_includes_current, &gizmo_handle, b->get_shift());
  
  					//clicking is always deferred to either move or release
  
  					clicked_wants_append = b->get_shift();
  
  					if (clicked.is_null()) {
  
  						if (!clicked_wants_append)
  							_clear_selected();
  
  						//default to regionselect
  						cursor.region_select = true;
  						cursor.region_begin = b->get_position();
  						cursor.region_end = b->get_position();
  					}
  
  					if (clicked.is_valid() && gizmo_handle >= 0) {
  
  						Node3D *spa = Object::cast_to<Node3D>(ObjectDB::get_instance(clicked));
  						if (spa) {
  
  							Ref<EditorNode3DGizmo> seg = spa->get_gizmo();
  							if (seg.is_valid()) {
  
  								_edit.gizmo = seg;
  								_edit.gizmo_handle = gizmo_handle;
  								_edit.gizmo_initial_value = seg->get_handle_value(gizmo_handle);
  								break;
  							}
  						}
  					}
  
  					surface->update();
  				} else {
  
  					if (_edit.gizmo.is_valid()) {
  
  						_edit.gizmo->commit_handle(_edit.gizmo_handle, _edit.gizmo_initial_value, false);
  						_edit.gizmo = Ref<EditorNode3DGizmo>();
  						break;
  					}
  					if (clicked.is_valid()) {
  						_select_clicked(clicked_wants_append, true);
  						// Processing was deferred.
  						clicked = ObjectID();
  					}
  
  					if (cursor.region_select) {
  
  						if (!clicked_wants_append) _clear_selected();
  
  						_select_region();
  						cursor.region_select = false;
  						surface->update();
  					}
  
  					if (_edit.mode != TRANSFORM_NONE) {
  
  						static const char *_transform_name[4] = { "None", "Rotate", "Translate", "Scale" };
  						undo_redo->create_action(_transform_name[_edit.mode]);
  
  						List<Node *> &selection = editor_selection->get_selected_node_list();
  
  						for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  							Node3D *sp = Object::cast_to<Node3D>(E->get());
  							if (!sp)
  								continue;
  
  							Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  							if (!se)
  								continue;
  
  							undo_redo->add_do_method(sp, "set_global_transform", sp->get_global_gizmo_transform());
  							undo_redo->add_undo_method(sp, "set_global_transform", se->original);
  						}
  						undo_redo->commit_action();
  						_edit.mode = TRANSFORM_NONE;
  						set_message("");
  					}
  
  					surface->update();
  				}
  
  			} break;
  		}
  	}
  
  	Ref<InputEventMouseMotion> m = p_event;
  
  	if (m.is_valid()) {
  
  		_edit.mouse_pos = m->get_position();
  
  		if (spatial_editor->get_selected()) {
  
  			Ref<EditorNode3DGizmo> seg = spatial_editor->get_selected()->get_gizmo();
  			if (seg.is_valid()) {
  
  				int selected_handle = -1;
  
  				int handle = -1;
  				Vector3 point;
  				Vector3 normal;
  				bool inters = seg->intersect_ray(camera, _edit.mouse_pos, point, normal, &handle, false);
  				if (inters && handle != -1) {
  
  					selected_handle = handle;
  				}
  
  				if (selected_handle != spatial_editor->get_over_gizmo_handle()) {
  					spatial_editor->set_over_gizmo_handle(selected_handle);
  					spatial_editor->get_selected()->update_gizmo();
  					if (selected_handle != -1)
  						spatial_editor->select_gizmo_highlight_axis(-1);
  				}
  			}
  		}
  
  		if (spatial_editor->get_over_gizmo_handle() == -1 && !(m->get_button_mask() & 1) && !_edit.gizmo.is_valid()) {
  
  			_gizmo_select(_edit.mouse_pos, true);
  		}
  
  		NavigationScheme nav_scheme = (NavigationScheme)EditorSettings::get_singleton()->get("editors/3d/navigation/navigation_scheme").operator int();
  		NavigationMode nav_mode = NAVIGATION_NONE;
  
  		if (_edit.gizmo.is_valid()) {
  
  			_edit.gizmo->set_handle(_edit.gizmo_handle, camera, m->get_position());
  			Variant v = _edit.gizmo->get_handle_value(_edit.gizmo_handle);
  			String n = _edit.gizmo->get_handle_name(_edit.gizmo_handle);
  			set_message(n + ": " + String(v));
  
  		} else if (m->get_button_mask() & BUTTON_MASK_LEFT) {
  
  			if (nav_scheme == NAVIGATION_MAYA && m->get_alt()) {
  				nav_mode = NAVIGATION_ORBIT;
  			} else if (nav_scheme == NAVIGATION_MODO && m->get_alt() && m->get_shift()) {
  				nav_mode = NAVIGATION_PAN;
  			} else if (nav_scheme == NAVIGATION_MODO && m->get_alt() && m->get_control()) {
  				nav_mode = NAVIGATION_ZOOM;
  			} else if (nav_scheme == NAVIGATION_MODO && m->get_alt()) {
  				nav_mode = NAVIGATION_ORBIT;
  			} else {
  				if (clicked.is_valid()) {
  
  					if (!clicked_includes_current) {
  
  						_select_clicked(clicked_wants_append, true);
  						// Processing was deferred.
  					}
  
  					_compute_edit(_edit.mouse_pos);
  					clicked = ObjectID();
  
  					_edit.mode = TRANSFORM_TRANSLATE;
  				}
  
  				if (cursor.region_select) {
  					cursor.region_end = m->get_position();
  					surface->update();
  					return;
  				}
  
  				if (_edit.mode == TRANSFORM_NONE)
  					return;
  
  				Vector3 ray_pos = _get_ray_pos(m->get_position());
  				Vector3 ray = _get_ray(m->get_position());
  				float snap = EDITOR_GET("interface/inspector/default_float_step");
  				int snap_step_decimals = Math::range_step_decimals(snap);
  
  				switch (_edit.mode) {
  
  					case TRANSFORM_SCALE: {
  
  						Vector3 motion_mask;
  						Plane plane;
  						bool plane_mv = false;
  
  						switch (_edit.plane) {
  							case TRANSFORM_VIEW:
  								motion_mask = Vector3(0, 0, 0);
  								plane = Plane(_edit.center, _get_camera_normal());
  								break;
  							case TRANSFORM_X_AXIS:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(0);
  								plane = Plane(_edit.center, motion_mask.cross(motion_mask.cross(_get_camera_normal())).normalized());
  								break;
  							case TRANSFORM_Y_AXIS:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(1);
  								plane = Plane(_edit.center, motion_mask.cross(motion_mask.cross(_get_camera_normal())).normalized());
  								break;
  							case TRANSFORM_Z_AXIS:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(2);
  								plane = Plane(_edit.center, motion_mask.cross(motion_mask.cross(_get_camera_normal())).normalized());
  								break;
  							case TRANSFORM_YZ:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(2) + spatial_editor->get_gizmo_transform().basis.get_axis(1);
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(0));
  								plane_mv = true;
  								break;
  							case TRANSFORM_XZ:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(2) + spatial_editor->get_gizmo_transform().basis.get_axis(0);
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(1));
  								plane_mv = true;
  								break;
  							case TRANSFORM_XY:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(0) + spatial_editor->get_gizmo_transform().basis.get_axis(1);
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(2));
  								plane_mv = true;
  								break;
  						}
  
  						Vector3 intersection;
  						if (!plane.intersects_ray(ray_pos, ray, &intersection))
  							break;
  
  						Vector3 click;
  						if (!plane.intersects_ray(_edit.click_ray_pos, _edit.click_ray, &click))
  							break;
  
  						Vector3 motion = intersection - click;
  						if (_edit.plane != TRANSFORM_VIEW) {
  
  							if (!plane_mv) {
  
  								motion = motion_mask.dot(motion) * motion_mask;
  
  							} else {
  
  								// Alternative planar scaling mode
  								if (_get_key_modifier(m) != KEY_SHIFT) {
  									motion = motion_mask.dot(motion) * motion_mask;
  								}
  							}
  
  						} else {
  							float center_click_dist = click.distance_to(_edit.center);
  							float center_inters_dist = intersection.distance_to(_edit.center);
  							if (center_click_dist == 0)
  								break;
  
  							float scale = center_inters_dist - center_click_dist;
  							motion = Vector3(scale, scale, scale);
  						}
  
  						List<Node *> &selection = editor_selection->get_selected_node_list();
  
  						// Disable local transformation for TRANSFORM_VIEW
  						bool local_coords = (spatial_editor->are_local_coords_enabled() && _edit.plane != TRANSFORM_VIEW);
  
  						if (_edit.snap || spatial_editor->is_snap_enabled()) {
  							snap = spatial_editor->get_scale_snap() / 100;
  						}
  						Vector3 motion_snapped = motion;
  						motion_snapped.snap(Vector3(snap, snap, snap));
  						// This might not be necessary anymore after issue #288 is solved (in 4.0?).
  						set_message(TTR("Scaling: ") + "(" + String::num(motion_snapped.x, snap_step_decimals) + ", " +
  									String::num(motion_snapped.y, snap_step_decimals) + ", " + String::num(motion_snapped.z, snap_step_decimals) + ")");
  
  						for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  							Node3D *sp = Object::cast_to<Node3D>(E->get());
  							if (!sp) {
  								continue;
  							}
  
  							Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  							if (!se) {
  								continue;
  							}
  
  							if (sp->has_meta("_edit_lock_")) {
  								continue;
  							}
  
  							Transform original = se->original;
  							Transform original_local = se->original_local;
  							Transform base = Transform(Basis(), _edit.center);
  							Transform t;
  							Vector3 local_scale;
  
  							if (local_coords) {
  
  								Basis g = original.basis.orthonormalized();
  								Vector3 local_motion = g.inverse().xform(motion);
  
  								if (_edit.snap || spatial_editor->is_snap_enabled()) {
  									local_motion.snap(Vector3(snap, snap, snap));
  								}
  
  								local_scale = original_local.basis.get_scale() * (local_motion + Vector3(1, 1, 1));
  
  								// Prevent scaling to 0 it would break the gizmo
  								Basis check = original_local.basis;
  								check.scale(local_scale);
  								if (check.determinant() != 0) {
  
  									// Apply scale
  									sp->set_scale(local_scale);
  								}
  
  							} else {
  
  								if (_edit.snap || spatial_editor->is_snap_enabled()) {
  									motion.snap(Vector3(snap, snap, snap));
  								}
  
  								Transform r;
  								r.basis.scale(motion + Vector3(1, 1, 1));
  								t = base * (r * (base.inverse() * original));
  
  								// Apply scale
  								sp->set_global_transform(t);
  							}
  						}
  
  						surface->update();
  
  					} break;
  
  					case TRANSFORM_TRANSLATE: {
  
  						Vector3 motion_mask;
  						Plane plane;
  						bool plane_mv = false;
  
  						switch (_edit.plane) {
  							case TRANSFORM_VIEW:
  								plane = Plane(_edit.center, _get_camera_normal());
  								break;
  							case TRANSFORM_X_AXIS:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(0);
  								plane = Plane(_edit.center, motion_mask.cross(motion_mask.cross(_get_camera_normal())).normalized());
  								break;
  							case TRANSFORM_Y_AXIS:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(1);
  								plane = Plane(_edit.center, motion_mask.cross(motion_mask.cross(_get_camera_normal())).normalized());
  								break;
  							case TRANSFORM_Z_AXIS:
  								motion_mask = spatial_editor->get_gizmo_transform().basis.get_axis(2);
  								plane = Plane(_edit.center, motion_mask.cross(motion_mask.cross(_get_camera_normal())).normalized());
  								break;
  							case TRANSFORM_YZ:
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(0));
  								plane_mv = true;
  								break;
  							case TRANSFORM_XZ:
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(1));
  								plane_mv = true;
  								break;
  							case TRANSFORM_XY:
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(2));
  								plane_mv = true;
  								break;
  						}
  
  						Vector3 intersection;
  						if (!plane.intersects_ray(ray_pos, ray, &intersection))
  							break;
  
  						Vector3 click;
  						if (!plane.intersects_ray(_edit.click_ray_pos, _edit.click_ray, &click))
  							break;
  
  						Vector3 motion = intersection - click;
  						if (_edit.plane != TRANSFORM_VIEW) {
  							if (!plane_mv) {
  								motion = motion_mask.dot(motion) * motion_mask;
  							}
  						}
  
  						List<Node *> &selection = editor_selection->get_selected_node_list();
  
  						// Disable local transformation for TRANSFORM_VIEW
  						bool local_coords = (spatial_editor->are_local_coords_enabled() && _edit.plane != TRANSFORM_VIEW);
  
  						if (_edit.snap || spatial_editor->is_snap_enabled()) {
  							snap = spatial_editor->get_translate_snap();
  						}
  						Vector3 motion_snapped = motion;
  						motion_snapped.snap(Vector3(snap, snap, snap));
  						set_message(TTR("Translating: ") + "(" + String::num(motion_snapped.x, snap_step_decimals) + ", " +
  									String::num(motion_snapped.y, snap_step_decimals) + ", " + String::num(motion_snapped.z, snap_step_decimals) + ")");
  
  						for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  							Node3D *sp = Object::cast_to<Node3D>(E->get());
  							if (!sp) {
  								continue;
  							}
  
  							Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  							if (!se) {
  								continue;
  							}
  
  							if (sp->has_meta("_edit_lock_")) {
  								continue;
  							}
  
  							Transform original = se->original;
  							Transform t;
  
  							if (local_coords) {
  
  								if (_edit.snap || spatial_editor->is_snap_enabled()) {
  									Basis g = original.basis.orthonormalized();
  									Vector3 local_motion = g.inverse().xform(motion);
  									local_motion.snap(Vector3(snap, snap, snap));
  
  									motion = g.xform(local_motion);
  								}
  
  							} else {
  
  								if (_edit.snap || spatial_editor->is_snap_enabled()) {
  									motion.snap(Vector3(snap, snap, snap));
  								}
  							}
  
  							// Apply translation
  							t = original;
  							t.origin += motion;
  							sp->set_global_transform(t);
  						}
  
  						surface->update();
  
  					} break;
  
  					case TRANSFORM_ROTATE: {
  
  						Plane plane;
  						Vector3 axis;
  
  						switch (_edit.plane) {
  							case TRANSFORM_VIEW:
  								plane = Plane(_edit.center, _get_camera_normal());
  								break;
  							case TRANSFORM_X_AXIS:
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(0));
  								axis = Vector3(1, 0, 0);
  								break;
  							case TRANSFORM_Y_AXIS:
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(1));
  								axis = Vector3(0, 1, 0);
  								break;
  							case TRANSFORM_Z_AXIS:
  								plane = Plane(_edit.center, spatial_editor->get_gizmo_transform().basis.get_axis(2));
  								axis = Vector3(0, 0, 1);
  								break;
  							case TRANSFORM_YZ:
  							case TRANSFORM_XZ:
  							case TRANSFORM_XY:
  								break;
  						}
  
  						Vector3 intersection;
  						if (!plane.intersects_ray(ray_pos, ray, &intersection))
  							break;
  
  						Vector3 click;
  						if (!plane.intersects_ray(_edit.click_ray_pos, _edit.click_ray, &click))
  							break;
  
  						Vector3 y_axis = (click - _edit.center).normalized();
  						Vector3 x_axis = plane.normal.cross(y_axis).normalized();
  
  						float angle = Math::atan2(x_axis.dot(intersection - _edit.center), y_axis.dot(intersection - _edit.center));
  
  						if (_edit.snap || spatial_editor->is_snap_enabled()) {
  							snap = spatial_editor->get_rotate_snap();
  						}
  						angle = Math::rad2deg(angle) + snap * 0.5; //else it won't reach +180
  						angle -= Math::fmod(angle, snap);
  						set_message(vformat(TTR("Rotating %s degrees."), String::num(angle, snap_step_decimals)));
  						angle = Math::deg2rad(angle);
  
  						List<Node *> &selection = editor_selection->get_selected_node_list();
  
  						bool local_coords = (spatial_editor->are_local_coords_enabled() && _edit.plane != TRANSFORM_VIEW); // Disable local transformation for TRANSFORM_VIEW
  
  						for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  							Node3D *sp = Object::cast_to<Node3D>(E->get());
  							if (!sp)
  								continue;
  
  							Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  							if (!se)
  								continue;
  
  							if (sp->has_meta("_edit_lock_")) {
  								continue;
  							}
  
  							Transform t;
  
  							if (local_coords) {
  
  								Transform original_local = se->original_local;
  								Basis rot = Basis(axis, angle);
  
  								t.basis = original_local.get_basis().orthonormalized() * rot;
  								t.origin = original_local.origin;
  
  								// Apply rotation
  								sp->set_transform(t);
  								sp->set_scale(original_local.basis.get_scale()); // re-apply original scale
  
  							} else {
  
  								Transform original = se->original;
  								Transform r;
  								Transform base = Transform(Basis(), _edit.center);
  
  								r.basis.rotate(plane.normal, angle);
  								t = base * r * base.inverse() * original;
  
  								// Apply rotation
  								sp->set_global_transform(t);
  							}
  						}
  
  						surface->update();
  
  					} break;
  					default: {
  					}
  				}
  			}
  
  		} else if ((m->get_button_mask() & BUTTON_MASK_RIGHT) || freelook_active) {
  
  			if (nav_scheme == NAVIGATION_MAYA && m->get_alt()) {
  				nav_mode = NAVIGATION_ZOOM;
  			} else if (freelook_active) {
  				nav_mode = NAVIGATION_LOOK;
  			} else if (orthogonal) {
  				nav_mode = NAVIGATION_PAN;
  			}
  
  		} else if (m->get_button_mask() & BUTTON_MASK_MIDDLE) {
  
  			if (nav_scheme == NAVIGATION_GODOT) {
  
  				const int mod = _get_key_modifier(m);
  
  				if (mod == _get_key_modifier_setting("editors/3d/navigation/pan_modifier")) {
  					nav_mode = NAVIGATION_PAN;
  				} else if (mod == _get_key_modifier_setting("editors/3d/navigation/zoom_modifier")) {
  					nav_mode = NAVIGATION_ZOOM;
  				} else if (mod == KEY_ALT || mod == _get_key_modifier_setting("editors/3d/navigation/orbit_modifier")) {
  					// Always allow Alt as a modifier to better support graphic tablets.
  					nav_mode = NAVIGATION_ORBIT;
  				}
  
  			} else if (nav_scheme == NAVIGATION_MAYA) {
  				if (m->get_alt())
  					nav_mode = NAVIGATION_PAN;
  			}
  
  		} else if (EditorSettings::get_singleton()->get("editors/3d/navigation/emulate_3_button_mouse")) {
  			// Handle trackpad (no external mouse) use case
  			const int mod = _get_key_modifier(m);
  
  			if (mod) {
  				if (mod == _get_key_modifier_setting("editors/3d/navigation/pan_modifier")) {
  					nav_mode = NAVIGATION_PAN;
  				} else if (mod == _get_key_modifier_setting("editors/3d/navigation/zoom_modifier")) {
  					nav_mode = NAVIGATION_ZOOM;
  				} else if (mod == KEY_ALT || mod == _get_key_modifier_setting("editors/3d/navigation/orbit_modifier")) {
  					// Always allow Alt as a modifier to better support graphic tablets.
  					nav_mode = NAVIGATION_ORBIT;
  				}
  			}
  		}
  
  		switch (nav_mode) {
  			case NAVIGATION_PAN: {
  				_nav_pan(m, _get_warped_mouse_motion(m));
  
  			} break;
  
  			case NAVIGATION_ZOOM: {
  				_nav_zoom(m, m->get_relative());
  
  			} break;
  
  			case NAVIGATION_ORBIT: {
  				_nav_orbit(m, _get_warped_mouse_motion(m));
  
  			} break;
  
  			case NAVIGATION_LOOK: {
  				_nav_look(m, _get_warped_mouse_motion(m));
  
  			} break;
  
  			default: {
  			}
  		}
  	}
  
  	Ref<InputEventMagnifyGesture> magnify_gesture = p_event;
  	if (magnify_gesture.is_valid()) {
  
  		if (is_freelook_active())
  			scale_freelook_speed(magnify_gesture->get_factor());
  		else
  			scale_cursor_distance(1.0 / magnify_gesture->get_factor());
  	}
  
  	Ref<InputEventPanGesture> pan_gesture = p_event;
  	if (pan_gesture.is_valid()) {
  
  		NavigationScheme nav_scheme = (NavigationScheme)EditorSettings::get_singleton()->get("editors/3d/navigation/navigation_scheme").operator int();
  		NavigationMode nav_mode = NAVIGATION_NONE;
  
  		if (nav_scheme == NAVIGATION_GODOT) {
  
  			const int mod = _get_key_modifier(pan_gesture);
  
  			if (mod == _get_key_modifier_setting("editors/3d/navigation/pan_modifier")) {
  				nav_mode = NAVIGATION_PAN;
  			} else if (mod == _get_key_modifier_setting("editors/3d/navigation/zoom_modifier")) {
  				nav_mode = NAVIGATION_ZOOM;
  			} else if (mod == KEY_ALT || mod == _get_key_modifier_setting("editors/3d/navigation/orbit_modifier")) {
  				// Always allow Alt as a modifier to better support graphic tablets.
  				nav_mode = NAVIGATION_ORBIT;
  			}
  
  		} else if (nav_scheme == NAVIGATION_MAYA) {
  			if (pan_gesture->get_alt())
  				nav_mode = NAVIGATION_PAN;
  		}
  
  		switch (nav_mode) {
  			case NAVIGATION_PAN: {
  				_nav_pan(m, pan_gesture->get_delta());
  
  			} break;
  
  			case NAVIGATION_ZOOM: {
  				_nav_zoom(m, pan_gesture->get_delta());
  
  			} break;
  
  			case NAVIGATION_ORBIT: {
  				_nav_orbit(m, pan_gesture->get_delta());
  
  			} break;
  
  			case NAVIGATION_LOOK: {
  				_nav_look(m, pan_gesture->get_delta());
  
  			} break;
  
  			default: {
  			}
  		}
  	}
  
  	Ref<InputEventKey> k = p_event;
  
  	if (k.is_valid()) {
  		if (!k->is_pressed())
  			return;
  
  		if (ED_IS_SHORTCUT("spatial_editor/snap", p_event)) {
  			if (_edit.mode != TRANSFORM_NONE) {
  				_edit.snap = !_edit.snap;
  			}
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/bottom_view", p_event)) {
  			_menu_option(VIEW_BOTTOM);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/top_view", p_event)) {
  			_menu_option(VIEW_TOP);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/rear_view", p_event)) {
  			_menu_option(VIEW_REAR);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/front_view", p_event)) {
  			_menu_option(VIEW_FRONT);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/left_view", p_event)) {
  			_menu_option(VIEW_LEFT);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/right_view", p_event)) {
  			_menu_option(VIEW_RIGHT);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/focus_origin", p_event)) {
  			_menu_option(VIEW_CENTER_TO_ORIGIN);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/focus_selection", p_event)) {
  			_menu_option(VIEW_CENTER_TO_SELECTION);
  		}
  		// Orthgonal mode doesn't work in freelook.
  		if (!freelook_active && ED_IS_SHORTCUT("spatial_editor/switch_perspective_orthogonal", p_event)) {
  			_menu_option(orthogonal ? VIEW_PERSPECTIVE : VIEW_ORTHOGONAL);
  			_update_name();
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/align_transform_with_view", p_event)) {
  			_menu_option(VIEW_ALIGN_TRANSFORM_WITH_VIEW);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/align_rotation_with_view", p_event)) {
  			_menu_option(VIEW_ALIGN_ROTATION_WITH_VIEW);
  		}
  		if (ED_IS_SHORTCUT("spatial_editor/insert_anim_key", p_event)) {
  			if (!get_selected_count() || _edit.mode != TRANSFORM_NONE)
  				return;
  
  			if (!AnimationPlayerEditor::singleton->get_track_editor()->has_keying()) {
  				set_message(TTR("Keying is disabled (no key inserted)."));
  				return;
  			}
  
  			List<Node *> &selection = editor_selection->get_selected_node_list();
  
  			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  				Node3D *sp = Object::cast_to<Node3D>(E->get());
  				if (!sp)
  					continue;
  
  				spatial_editor->emit_signal("transform_key_request", sp, "", sp->get_transform());
  			}
  
  			set_message(TTR("Animation Key Inserted."));
  		}
  
  		// Freelook doesn't work in orthogonal mode.
  		if (!orthogonal && ED_IS_SHORTCUT("spatial_editor/freelook_toggle", p_event)) {
  			set_freelook_active(!is_freelook_active());
  
  		} else if (k->get_keycode() == KEY_ESCAPE) {
  			set_freelook_active(false);
  		}
  
  		if (k->get_keycode() == KEY_SPACE) {
  			if (!k->is_pressed()) emit_signal("toggle_maximize_view", this);
  		}
  	}
  
  	// freelook uses most of the useful shortcuts, like save, so its ok
  	// to consider freelook active as end of the line for future events.
  	if (freelook_active)
  		accept_event();
  }
  
  void Node3DEditorViewport::_nav_pan(Ref<InputEventWithModifiers> p_event, const Vector2 &p_relative) {
  
  	const NavigationScheme nav_scheme = (NavigationScheme)EditorSettings::get_singleton()->get("editors/3d/navigation/navigation_scheme").operator int();
  
  	real_t pan_speed = 1 / 150.0;
  	int pan_speed_modifier = 10;
  	if (nav_scheme == NAVIGATION_MAYA && p_event->get_shift())
  		pan_speed *= pan_speed_modifier;
  
  	Transform camera_transform;
  
  	camera_transform.translate(cursor.pos);
  	camera_transform.basis.rotate(Vector3(1, 0, 0), -cursor.x_rot);
  	camera_transform.basis.rotate(Vector3(0, 1, 0), -cursor.y_rot);
  	Vector3 translation(-p_relative.x * pan_speed, p_relative.y * pan_speed, 0);
  	translation *= cursor.distance / DISTANCE_DEFAULT;
  	camera_transform.translate(translation);
  	cursor.pos = camera_transform.origin;
  }
  
  void Node3DEditorViewport::_nav_zoom(Ref<InputEventWithModifiers> p_event, const Vector2 &p_relative) {
  
  	const NavigationScheme nav_scheme = (NavigationScheme)EditorSettings::get_singleton()->get("editors/3d/navigation/navigation_scheme").operator int();
  
  	real_t zoom_speed = 1 / 80.0;
  	int zoom_speed_modifier = 10;
  	if (nav_scheme == NAVIGATION_MAYA && p_event->get_shift())
  		zoom_speed *= zoom_speed_modifier;
  
  	NavigationZoomStyle zoom_style = (NavigationZoomStyle)EditorSettings::get_singleton()->get("editors/3d/navigation/zoom_style").operator int();
  	if (zoom_style == NAVIGATION_ZOOM_HORIZONTAL) {
  		if (p_relative.x > 0)
  			scale_cursor_distance(1 - p_relative.x * zoom_speed);
  		else if (p_relative.x < 0)
  			scale_cursor_distance(1.0 / (1 + p_relative.x * zoom_speed));
  	} else {
  		if (p_relative.y > 0)
  			scale_cursor_distance(1 + p_relative.y * zoom_speed);
  		else if (p_relative.y < 0)
  			scale_cursor_distance(1.0 / (1 - p_relative.y * zoom_speed));
  	}
  }
  
  void Node3DEditorViewport::_nav_orbit(Ref<InputEventWithModifiers> p_event, const Vector2 &p_relative) {
  
  	if (lock_rotation) {
  		_nav_pan(p_event, p_relative);
  		return;
  	}
  
  	if (orthogonal && auto_orthogonal) {
  		_menu_option(VIEW_PERSPECTIVE);
  	}
  
  	real_t degrees_per_pixel = EditorSettings::get_singleton()->get("editors/3d/navigation_feel/orbit_sensitivity");
  	real_t radians_per_pixel = Math::deg2rad(degrees_per_pixel);
  	bool invert_y_axis = EditorSettings::get_singleton()->get("editors/3d/navigation/invert_y_axis");
  
  	if (invert_y_axis) {
  		cursor.x_rot -= p_relative.y * radians_per_pixel;
  	} else {
  		cursor.x_rot += p_relative.y * radians_per_pixel;
  	}
  	cursor.y_rot += p_relative.x * radians_per_pixel;
  	if (cursor.x_rot > Math_PI / 2.0)
  		cursor.x_rot = Math_PI / 2.0;
  	if (cursor.x_rot < -Math_PI / 2.0)
  		cursor.x_rot = -Math_PI / 2.0;
  	name = "";
  	_update_name();
  }
  
  void Node3DEditorViewport::_nav_look(Ref<InputEventWithModifiers> p_event, const Vector2 &p_relative) {
  
  	if (orthogonal) {
  		_nav_pan(p_event, p_relative);
  		return;
  	}
  
  	if (orthogonal && auto_orthogonal) {
  		_menu_option(VIEW_PERSPECTIVE);
  	}
  
  	real_t degrees_per_pixel = EditorSettings::get_singleton()->get("editors/3d/navigation_feel/orbit_sensitivity");
  	real_t radians_per_pixel = Math::deg2rad(degrees_per_pixel);
  	bool invert_y_axis = EditorSettings::get_singleton()->get("editors/3d/navigation/invert_y_axis");
  
  	// Note: do NOT assume the camera has the "current" transform, because it is interpolated and may have "lag".
  	Transform prev_camera_transform = to_camera_transform(cursor);
  
  	if (invert_y_axis) {
  		cursor.x_rot -= p_relative.y * radians_per_pixel;
  	} else {
  		cursor.x_rot += p_relative.y * radians_per_pixel;
  	}
  	cursor.y_rot += p_relative.x * radians_per_pixel;
  	if (cursor.x_rot > Math_PI / 2.0)
  		cursor.x_rot = Math_PI / 2.0;
  	if (cursor.x_rot < -Math_PI / 2.0)
  		cursor.x_rot = -Math_PI / 2.0;
  
  	// Look is like the opposite of Orbit: the focus point rotates around the camera
  	Transform camera_transform = to_camera_transform(cursor);
  	Vector3 pos = camera_transform.xform(Vector3(0, 0, 0));
  	Vector3 prev_pos = prev_camera_transform.xform(Vector3(0, 0, 0));
  	Vector3 diff = prev_pos - pos;
  	cursor.pos += diff;
  
  	name = "";
  	_update_name();
  }
  
  void Node3DEditorViewport::set_freelook_active(bool active_now) {
  
  	if (!freelook_active && active_now) {
  		// Sync camera cursor to cursor to "cut" interpolation jumps due to changing referential
  		cursor = camera_cursor;
  
  		// Make sure eye_pos is synced, because freelook referential is eye pos rather than orbit pos
  		Vector3 forward = to_camera_transform(cursor).basis.xform(Vector3(0, 0, -1));
  		cursor.eye_pos = cursor.pos - cursor.distance * forward;
  		// Also sync the camera cursor, otherwise switching to freelook will be trippy if inertia is active
  		camera_cursor.eye_pos = cursor.eye_pos;
  
  		if (EditorSettings::get_singleton()->get("editors/3d/freelook/freelook_speed_zoom_link")) {
  			// Re-adjust freelook speed from the current zoom level
  			real_t base_speed = EditorSettings::get_singleton()->get("editors/3d/freelook/freelook_base_speed");
  			freelook_speed = base_speed * cursor.distance;
  		}
  
  		// Hide mouse like in an FPS (warping doesn't work)
  		DisplayServer::get_singleton()->mouse_set_mode(DisplayServer::MOUSE_MODE_CAPTURED);
  
  	} else if (freelook_active && !active_now) {
  		// Sync camera cursor to cursor to "cut" interpolation jumps due to changing referential
  		cursor = camera_cursor;
  
  		// Restore mouse
  		DisplayServer::get_singleton()->mouse_set_mode(DisplayServer::MOUSE_MODE_VISIBLE);
  	}
  
  	freelook_active = active_now;
  }
  
  void Node3DEditorViewport::scale_cursor_distance(real_t scale) {
  
  	// Prevents zero distance which would short-circuit any scaling
  	if (cursor.distance < ZOOM_MIN_DISTANCE)
  		cursor.distance = ZOOM_MIN_DISTANCE;
  
  	cursor.distance *= scale;
  
  	if (cursor.distance < ZOOM_MIN_DISTANCE)
  		cursor.distance = ZOOM_MIN_DISTANCE;
  
  	zoom_indicator_delay = ZOOM_INDICATOR_DELAY_S;
  	surface->update();
  }
  
  void Node3DEditorViewport::scale_freelook_speed(real_t scale) {
  
  	// Prevents zero distance which would short-circuit any scaling
  	if (freelook_speed < FREELOOK_MIN_SPEED)
  		freelook_speed = FREELOOK_MIN_SPEED;
  
  	freelook_speed *= scale;
  
  	if (freelook_speed < FREELOOK_MIN_SPEED)
  		freelook_speed = FREELOOK_MIN_SPEED;
  
  	zoom_indicator_delay = ZOOM_INDICATOR_DELAY_S;
  	surface->update();
  }
  
  Point2i Node3DEditorViewport::_get_warped_mouse_motion(const Ref<InputEventMouseMotion> &p_ev_mouse_motion) const {
  	Point2i relative;
  	if (bool(EDITOR_DEF("editors/3d/navigation/warped_mouse_panning", false))) {
  		relative = InputFilter::get_singleton()->warp_mouse_motion(p_ev_mouse_motion, surface->get_global_rect());
  	} else {
  		relative = p_ev_mouse_motion->get_relative();
  	}
  	return relative;
  }
  
  static bool is_shortcut_pressed(const String &p_path) {
  	Ref<ShortCut> shortcut = ED_GET_SHORTCUT(p_path);
  	if (shortcut.is_null()) {
  		return false;
  	}
  	InputEventKey *k = Object::cast_to<InputEventKey>(shortcut->get_shortcut().ptr());
  	if (k == NULL) {
  		return false;
  	}
  	const InputFilter &input = *InputFilter::get_singleton();
  	int keycode = k->get_keycode();
  	return input.is_key_pressed(keycode);
  }
  
  void Node3DEditorViewport::_update_freelook(real_t delta) {
  
  	if (!is_freelook_active()) {
  		return;
  	}
  
  	const Vector3 forward = camera->get_transform().basis.xform(Vector3(0, 0, -1));
  	const Vector3 right = camera->get_transform().basis.xform(Vector3(1, 0, 0));
  	const Vector3 up = camera->get_transform().basis.xform(Vector3(0, 1, 0));
  
  	Vector3 direction;
  
  	if (is_shortcut_pressed("spatial_editor/freelook_left")) {
  		direction -= right;
  	}
  	if (is_shortcut_pressed("spatial_editor/freelook_right")) {
  		direction += right;
  	}
  	if (is_shortcut_pressed("spatial_editor/freelook_forward")) {
  		direction += forward;
  	}
  	if (is_shortcut_pressed("spatial_editor/freelook_backwards")) {
  		direction -= forward;
  	}
  	if (is_shortcut_pressed("spatial_editor/freelook_up")) {
  		direction += up;
  	}
  	if (is_shortcut_pressed("spatial_editor/freelook_down")) {
  		direction -= up;
  	}
  
  	real_t speed = freelook_speed;
  
  	if (is_shortcut_pressed("spatial_editor/freelook_speed_modifier")) {
  		speed *= 3.0;
  	}
  	if (is_shortcut_pressed("spatial_editor/freelook_slow_modifier")) {
  		speed *= 0.333333;
  	}
  
  	const Vector3 motion = direction * speed * delta;
  	cursor.pos += motion;
  	cursor.eye_pos += motion;
  }
  
  void Node3DEditorViewport::set_message(String p_message, float p_time) {
  
  	message = p_message;
  	message_time = p_time;
  }
  
  void Node3DEditorPlugin::edited_scene_changed() {
  	for (uint32_t i = 0; i < Node3DEditor::VIEWPORTS_COUNT; i++) {
  		Node3DEditorViewport *viewport = Node3DEditor::get_singleton()->get_editor_viewport(i);
  		if (viewport->is_visible()) {
  			viewport->notification(Control::NOTIFICATION_VISIBILITY_CHANGED);
  		}
  	}
  }
  
  void Node3DEditorViewport::_notification(int p_what) {
  
  	if (p_what == NOTIFICATION_VISIBILITY_CHANGED) {
  
  		bool visible = is_visible_in_tree();
  
  		set_process(visible);
  
  		if (visible) {
  			orthogonal = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_ORTHOGONAL));
  			_update_name();
  			_update_camera(0);
  		} else {
  			set_freelook_active(false);
  		}
  		call_deferred("update_transform_gizmo_view");
  		rotation_control->set_visible(EditorSettings::get_singleton()->get("editors/3d/navigation/show_viewport_rotation_gizmo"));
  	}
  
  	if (p_what == NOTIFICATION_RESIZED) {
  
  		call_deferred("update_transform_gizmo_view");
  	}
  
  	if (p_what == NOTIFICATION_READY) {
  		// The crosshair icon doesn't depend on the editor theme.
  		crosshair->set_texture(get_theme_icon("Crosshair", "EditorIcons"));
  		// Set the anchors and margins after changing the icon to ensure it's centered correctly.
  		crosshair->set_anchors_and_margins_preset(PRESET_CENTER);
  	}
  
  	if (p_what == NOTIFICATION_PROCESS) {
  
  		real_t delta = get_process_delta_time();
  
  		if (zoom_indicator_delay > 0) {
  			zoom_indicator_delay -= delta;
  			if (zoom_indicator_delay <= 0) {
  				surface->update();
  			}
  		}
  
  		_update_freelook(delta);
  
  		Node *scene_root = editor->get_scene_tree_dock()->get_editor_data()->get_edited_scene_root();
  		if (previewing_cinema && scene_root != NULL) {
  			Camera3D *cam = scene_root->get_viewport()->get_camera();
  			if (cam != NULL && cam != previewing) {
  				//then switch the viewport's camera to the scene's viewport camera
  				if (previewing != NULL) {
  					previewing->disconnect("tree_exited", callable_mp(this, &Node3DEditorViewport::_preview_exited_scene));
  				}
  				previewing = cam;
  				previewing->connect("tree_exited", callable_mp(this, &Node3DEditorViewport::_preview_exited_scene));
  				RS::get_singleton()->viewport_attach_camera(viewport->get_viewport_rid(), cam->get_camera());
  				surface->update();
  			}
  		}
  
  		_update_camera(delta);
  
  		Map<Node *, Object *> &selection = editor_selection->get_selection();
  
  		bool changed = false;
  		bool exist = false;
  
  		for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {
  
  			Node3D *sp = Object::cast_to<Node3D>(E->key());
  			if (!sp)
  				continue;
  
  			Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  			if (!se)
  				continue;
  
  			Transform t = sp->get_global_gizmo_transform();
  
  			exist = true;
  			if (se->last_xform == t && !se->last_xform_dirty)
  				continue;
  			changed = true;
  			se->last_xform_dirty = false;
  			se->last_xform = t;
  
  			VisualInstance3D *vi = Object::cast_to<VisualInstance3D>(sp);
  
  			se->aabb = vi ? vi->get_aabb() : _calculate_spatial_bounds(sp);
  
  			t.translate(se->aabb.position);
  
  			// apply AABB scaling before item's global transform
  			Basis aabb_s;
  			aabb_s.scale(se->aabb.size);
  			t.basis = t.basis * aabb_s;
  
  			RenderingServer::get_singleton()->instance_set_transform(se->sbox_instance, t);
  		}
  
  		if (changed || (spatial_editor->is_gizmo_visible() && !exist)) {
  			spatial_editor->update_transform_gizmo();
  		}
  
  		if (message_time > 0) {
  
  			if (message != last_message) {
  				surface->update();
  				last_message = message;
  			}
  
  			message_time -= get_physics_process_delta_time();
  			if (message_time < 0)
  				surface->update();
  		}
  
  		//update shadow atlas if changed
  
  		int shadowmap_size = ProjectSettings::get_singleton()->get("rendering/quality/shadow_atlas/size");
  		int atlas_q0 = ProjectSettings::get_singleton()->get("rendering/quality/shadow_atlas/quadrant_0_subdiv");
  		int atlas_q1 = ProjectSettings::get_singleton()->get("rendering/quality/shadow_atlas/quadrant_1_subdiv");
  		int atlas_q2 = ProjectSettings::get_singleton()->get("rendering/quality/shadow_atlas/quadrant_2_subdiv");
  		int atlas_q3 = ProjectSettings::get_singleton()->get("rendering/quality/shadow_atlas/quadrant_3_subdiv");
  
  		viewport->set_shadow_atlas_size(shadowmap_size);
  		viewport->set_shadow_atlas_quadrant_subdiv(0, Viewport::ShadowAtlasQuadrantSubdiv(atlas_q0));
  		viewport->set_shadow_atlas_quadrant_subdiv(1, Viewport::ShadowAtlasQuadrantSubdiv(atlas_q1));
  		viewport->set_shadow_atlas_quadrant_subdiv(2, Viewport::ShadowAtlasQuadrantSubdiv(atlas_q2));
  		viewport->set_shadow_atlas_quadrant_subdiv(3, Viewport::ShadowAtlasQuadrantSubdiv(atlas_q3));
  
  		bool shrink = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_HALF_RESOLUTION));
  
  		if (shrink != (viewport_container->get_stretch_shrink() > 1)) {
  			viewport_container->set_stretch_shrink(shrink ? 2 : 1);
  		}
  
  		//update msaa if changed
  
  		int msaa_mode = ProjectSettings::get_singleton()->get("rendering/quality/filters/msaa");
  		viewport->set_msaa(Viewport::MSAA(msaa_mode));
  
  		bool show_info = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_INFORMATION));
  		info_label->set_visible(show_info);
  
  		Camera3D *current_camera;
  
  		if (previewing) {
  			current_camera = previewing;
  		} else {
  			current_camera = camera;
  		}
  
  		// Display the crosshair only while freelooking. Hide it otherwise,
  		// as the crosshair can be distracting.
  		crosshair->set_visible(freelook_active);
  
  		if (show_info) {
  			String text;
  			text += "X: " + rtos(current_camera->get_translation().x).pad_decimals(1) + "\n";
  			text += "Y: " + rtos(current_camera->get_translation().y).pad_decimals(1) + "\n";
  			text += "Z: " + rtos(current_camera->get_translation().z).pad_decimals(1) + "\n";
  			text += TTR("Pitch") + ": " + itos(Math::round(current_camera->get_rotation_degrees().x)) + "\n";
  			text += TTR("Yaw") + ": " + itos(Math::round(current_camera->get_rotation_degrees().y)) + "\n\n";
  			text += TTR("Objects Drawn") + ": " + itos(viewport->get_render_info(Viewport::RENDER_INFO_OBJECTS_IN_FRAME)) + "\n";
  			text += TTR("Material Changes") + ": " + itos(viewport->get_render_info(Viewport::RENDER_INFO_MATERIAL_CHANGES_IN_FRAME)) + "\n";
  			text += TTR("Shader Changes") + ": " + itos(viewport->get_render_info(Viewport::RENDER_INFO_SHADER_CHANGES_IN_FRAME)) + "\n";
  			text += TTR("Surface Changes") + ": " + itos(viewport->get_render_info(Viewport::RENDER_INFO_SURFACE_CHANGES_IN_FRAME)) + "\n";
  			text += TTR("Draw Calls") + ": " + itos(viewport->get_render_info(Viewport::RENDER_INFO_DRAW_CALLS_IN_FRAME)) + "\n";
  			text += TTR("Vertices") + ": " + itos(viewport->get_render_info(Viewport::RENDER_INFO_VERTICES_IN_FRAME));
  			info_label->set_text(text);
  		}
  
  		// FPS Counter.
  		bool show_fps = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_FPS));
  		fps_label->set_visible(show_fps);
  
  		if (show_fps) {
  			String text;
  			const float temp_fps = Engine::get_singleton()->get_frames_per_second();
  			text += TTR(vformat("FPS: %d (%s ms)", temp_fps, String::num(1000.0f / temp_fps, 2)));
  			fps_label->set_text(text);
  		}
  
  		bool show_cinema = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_CINEMATIC_PREVIEW));
  		cinema_label->set_visible(show_cinema);
  		if (show_cinema) {
  			float cinema_half_width = cinema_label->get_size().width / 2.0f;
  			cinema_label->set_anchor_and_margin(MARGIN_LEFT, 0.5f, -cinema_half_width);
  		}
  
  		if (lock_rotation) {
  			float locked_half_width = locked_label->get_size().width / 2.0f;
  			locked_label->set_anchor_and_margin(MARGIN_LEFT, 0.5f, -locked_half_width);
  		}
  	}
  
  	if (p_what == NOTIFICATION_ENTER_TREE) {
  
  		surface->connect("draw", callable_mp(this, &Node3DEditorViewport::_draw));
  		surface->connect("gui_input", callable_mp(this, &Node3DEditorViewport::_sinput));
  		surface->connect("mouse_entered", callable_mp(this, &Node3DEditorViewport::_surface_mouse_enter));
  		surface->connect("mouse_exited", callable_mp(this, &Node3DEditorViewport::_surface_mouse_exit));
  		surface->connect("focus_entered", callable_mp(this, &Node3DEditorViewport::_surface_focus_enter));
  		surface->connect("focus_exited", callable_mp(this, &Node3DEditorViewport::_surface_focus_exit));
  
  		_init_gizmo_instance(index);
  	}
  
  	if (p_what == NOTIFICATION_EXIT_TREE) {
  
  		_finish_gizmo_instances();
  	}
  
  	if (p_what == NOTIFICATION_THEME_CHANGED) {
  
  		view_menu->set_icon(get_theme_icon("GuiTabMenu", "EditorIcons"));
  		preview_camera->set_icon(get_theme_icon("Camera3D", "EditorIcons"));
  
  		view_menu->add_theme_style_override("normal", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		view_menu->add_theme_style_override("hover", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		view_menu->add_theme_style_override("pressed", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		view_menu->add_theme_style_override("focus", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		view_menu->add_theme_style_override("disabled", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  
  		preview_camera->add_theme_style_override("normal", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		preview_camera->add_theme_style_override("hover", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		preview_camera->add_theme_style_override("pressed", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		preview_camera->add_theme_style_override("focus", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		preview_camera->add_theme_style_override("disabled", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  
  		info_label->add_theme_style_override("normal", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		fps_label->add_theme_style_override("normal", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		cinema_label->add_theme_style_override("normal", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  		locked_label->add_theme_style_override("normal", editor->get_gui_base()->get_theme_stylebox("Information3dViewport", "EditorStyles"));
  	}
  }
  
  static void draw_indicator_bar(Control &surface, real_t fill, Ref<Texture2D> icon) {
  
  	// Adjust bar size from control height
  	Vector2 surface_size = surface.get_size();
  	real_t h = surface_size.y / 2.0;
  	real_t y = (surface_size.y - h) / 2.0;
  
  	Rect2 r(10, y, 6, h);
  	real_t sy = r.size.y * fill;
  
  	// Note: because this bar appears over the viewport, it has to stay readable for any background color
  	// Draw both neutral dark and bright colors to account this
  	surface.draw_rect(r, Color(1, 1, 1, 0.2));
  	surface.draw_rect(Rect2(r.position.x, r.position.y + r.size.y - sy, r.size.x, sy), Color(1, 1, 1, 0.6));
  	surface.draw_rect(r.grow(1), Color(0, 0, 0, 0.7), false, Math::round(EDSCALE));
  
  	Vector2 icon_size = icon->get_size();
  	Vector2 icon_pos = Vector2(r.position.x - (icon_size.x - r.size.x) / 2, r.position.y + r.size.y + 2);
  	surface.draw_texture(icon, icon_pos);
  }
  
  void Node3DEditorViewport::_draw() {
  
  	EditorPluginList *over_plugin_list = EditorNode::get_singleton()->get_editor_plugins_over();
  	if (!over_plugin_list->empty()) {
  		over_plugin_list->forward_spatial_draw_over_viewport(surface);
  	}
  
  	EditorPluginList *force_over_plugin_list = editor->get_editor_plugins_force_over();
  	if (!force_over_plugin_list->empty()) {
  		force_over_plugin_list->forward_spatial_force_draw_over_viewport(surface);
  	}
  
  	if (surface->has_focus()) {
  		Size2 size = surface->get_size();
  		Rect2 r = Rect2(Point2(), size);
  		get_theme_stylebox("Focus", "EditorStyles")->draw(surface->get_canvas_item(), r);
  	}
  
  	if (cursor.region_select) {
  		const Rect2 selection_rect = Rect2(cursor.region_begin, cursor.region_end - cursor.region_begin);
  
  		surface->draw_rect(
  				selection_rect,
  				get_theme_color("box_selection_fill_color", "Editor"));
  
  		surface->draw_rect(
  				selection_rect,
  				get_theme_color("box_selection_stroke_color", "Editor"),
  				false,
  				Math::round(EDSCALE));
  	}
  
  	RID ci = surface->get_canvas_item();
  
  	if (message_time > 0) {
  		Ref<Font> font = get_theme_font("font", "Label");
  		Point2 msgpos = Point2(5, get_size().y - 20);
  		font->draw(ci, msgpos + Point2(1, 1), message, Color(0, 0, 0, 0.8));
  		font->draw(ci, msgpos + Point2(-1, -1), message, Color(0, 0, 0, 0.8));
  		font->draw(ci, msgpos, message, Color(1, 1, 1, 1));
  	}
  
  	if (_edit.mode == TRANSFORM_ROTATE) {
  
  		Point2 center = _point_to_screen(_edit.center);
  		RenderingServer::get_singleton()->canvas_item_add_line(
  				ci,
  				_edit.mouse_pos,
  				center,
  				get_theme_color("accent_color", "Editor") * Color(1, 1, 1, 0.6),
  				Math::round(2 * EDSCALE));
  	}
  	if (previewing) {
  
  		Size2 ss = Size2(ProjectSettings::get_singleton()->get("display/window/size/width"), ProjectSettings::get_singleton()->get("display/window/size/height"));
  		float aspect = ss.aspect();
  		Size2 s = get_size();
  
  		Rect2 draw_rect;
  
  		switch (previewing->get_keep_aspect_mode()) {
  			case Camera3D::KEEP_WIDTH: {
  
  				draw_rect.size = Size2(s.width, s.width / aspect);
  				draw_rect.position.x = 0;
  				draw_rect.position.y = (s.height - draw_rect.size.y) * 0.5;
  
  			} break;
  			case Camera3D::KEEP_HEIGHT: {
  
  				draw_rect.size = Size2(s.height * aspect, s.height);
  				draw_rect.position.y = 0;
  				draw_rect.position.x = (s.width - draw_rect.size.x) * 0.5;
  
  			} break;
  		}
  
  		draw_rect = Rect2(Vector2(), s).clip(draw_rect);
  
  		surface->draw_rect(draw_rect, Color(0.6, 0.6, 0.1, 0.5), false, Math::round(2 * EDSCALE));
  
  	} else {
  
  		if (zoom_indicator_delay > 0.0) {
  
  			if (is_freelook_active()) {
  				// Show speed
  
  				real_t min_speed = FREELOOK_MIN_SPEED;
  				real_t max_speed = camera->get_zfar();
  				real_t scale_length = (max_speed - min_speed);
  
  				if (!Math::is_zero_approx(scale_length)) {
  					real_t logscale_t = 1.0 - Math::log(1 + freelook_speed - min_speed) / Math::log(1 + scale_length);
  
  					// There is no real maximum speed so that factor can become negative,
  					// Let's make it look asymptotic instead (will decrease slower and slower).
  					if (logscale_t < 0.25)
  						logscale_t = 0.25 * Math::exp(4.0 * logscale_t - 1.0);
  
  					draw_indicator_bar(*surface, 1.0 - logscale_t, get_theme_icon("ViewportSpeed", "EditorIcons"));
  				}
  
  			} else {
  				// Show zoom
  
  				real_t min_distance = ZOOM_MIN_DISTANCE; // TODO Why not pick znear to limit zoom?
  				real_t max_distance = camera->get_zfar();
  				real_t scale_length = (max_distance - min_distance);
  
  				if (!Math::is_zero_approx(scale_length)) {
  					real_t logscale_t = 1.0 - Math::log(1 + cursor.distance - min_distance) / Math::log(1 + scale_length);
  
  					// There is no real maximum distance so that factor can become negative,
  					// Let's make it look asymptotic instead (will decrease slower and slower).
  					if (logscale_t < 0.25)
  						logscale_t = 0.25 * Math::exp(4.0 * logscale_t - 1.0);
  
  					draw_indicator_bar(*surface, logscale_t, get_theme_icon("ViewportZoom", "EditorIcons"));
  				}
  			}
  		}
  	}
  }
  
  void Node3DEditorViewport::_menu_option(int p_option) {
  
  	switch (p_option) {
  
  		case VIEW_TOP: {
  
  			cursor.y_rot = 0;
  			cursor.x_rot = Math_PI / 2.0;
  			set_message(TTR("Top View."), 2);
  			name = TTR("Top");
  			_set_auto_orthogonal();
  			_update_name();
  
  		} break;
  		case VIEW_BOTTOM: {
  
  			cursor.y_rot = 0;
  			cursor.x_rot = -Math_PI / 2.0;
  			set_message(TTR("Bottom View."), 2);
  			name = TTR("Bottom");
  			_set_auto_orthogonal();
  			_update_name();
  
  		} break;
  		case VIEW_LEFT: {
  
  			cursor.x_rot = 0;
  			cursor.y_rot = Math_PI / 2.0;
  			set_message(TTR("Left View."), 2);
  			name = TTR("Left");
  			_set_auto_orthogonal();
  			_update_name();
  
  		} break;
  		case VIEW_RIGHT: {
  
  			cursor.x_rot = 0;
  			cursor.y_rot = -Math_PI / 2.0;
  			set_message(TTR("Right View."), 2);
  			name = TTR("Right");
  			_set_auto_orthogonal();
  			_update_name();
  
  		} break;
  		case VIEW_FRONT: {
  
  			cursor.x_rot = 0;
  			cursor.y_rot = 0;
  			set_message(TTR("Front View."), 2);
  			name = TTR("Front");
  			_set_auto_orthogonal();
  			_update_name();
  
  		} break;
  		case VIEW_REAR: {
  
  			cursor.x_rot = 0;
  			cursor.y_rot = Math_PI;
  			set_message(TTR("Rear View."), 2);
  			name = TTR("Rear");
  			_set_auto_orthogonal();
  			_update_name();
  
  		} break;
  		case VIEW_CENTER_TO_ORIGIN: {
  
  			cursor.pos = Vector3(0, 0, 0);
  
  		} break;
  		case VIEW_CENTER_TO_SELECTION: {
  
  			focus_selection();
  
  		} break;
  		case VIEW_ALIGN_TRANSFORM_WITH_VIEW: {
  
  			if (!get_selected_count())
  				break;
  
  			Transform camera_transform = camera->get_global_transform();
  
  			List<Node *> &selection = editor_selection->get_selected_node_list();
  
  			undo_redo->create_action(TTR("Align Transform with View"));
  
  			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  				Node3D *sp = Object::cast_to<Node3D>(E->get());
  				if (!sp)
  					continue;
  
  				Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  				if (!se)
  					continue;
  
  				Transform xform;
  				if (orthogonal) {
  					xform = sp->get_global_transform();
  					xform.basis.set_euler(camera_transform.basis.get_euler());
  				} else {
  					xform = camera_transform;
  					xform.scale_basis(sp->get_scale());
  				}
  
  				undo_redo->add_do_method(sp, "set_global_transform", xform);
  				undo_redo->add_undo_method(sp, "set_global_transform", sp->get_global_gizmo_transform());
  			}
  			undo_redo->commit_action();
  			focus_selection();
  
  		} break;
  		case VIEW_ALIGN_ROTATION_WITH_VIEW: {
  
  			if (!get_selected_count())
  				break;
  
  			Transform camera_transform = camera->get_global_transform();
  
  			List<Node *> &selection = editor_selection->get_selected_node_list();
  
  			undo_redo->create_action(TTR("Align Rotation with View"));
  			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  				Node3D *sp = Object::cast_to<Node3D>(E->get());
  				if (!sp)
  					continue;
  
  				Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  				if (!se)
  					continue;
  
  				undo_redo->add_do_method(sp, "set_rotation", camera_transform.basis.get_rotation());
  				undo_redo->add_undo_method(sp, "set_rotation", sp->get_rotation());
  			}
  			undo_redo->commit_action();
  
  		} break;
  		case VIEW_ENVIRONMENT: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_ENVIRONMENT);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			current = !current;
  			if (current) {
  
  				camera->set_environment(RES());
  			} else {
  
  				camera->set_environment(Node3DEditor::get_singleton()->get_viewport_environment());
  			}
  
  			view_menu->get_popup()->set_item_checked(idx, current);
  
  		} break;
  		case VIEW_PERSPECTIVE: {
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_PERSPECTIVE), true);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_ORTHOGONAL), false);
  			orthogonal = false;
  			auto_orthogonal = false;
  			call_deferred("update_transform_gizmo_view");
  			_update_name();
  
  		} break;
  		case VIEW_ORTHOGONAL: {
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_PERSPECTIVE), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_ORTHOGONAL), true);
  			orthogonal = true;
  			auto_orthogonal = false;
  			call_deferred("update_transform_gizmo_view");
  			_update_name();
  
  		} break;
  		case VIEW_AUTO_ORTHOGONAL: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_AUTO_ORTHOGONAL);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			current = !current;
  			view_menu->get_popup()->set_item_checked(idx, current);
  			if (auto_orthogonal) {
  				auto_orthogonal = false;
  				_update_name();
  			}
  		} break;
  		case VIEW_LOCK_ROTATION: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_LOCK_ROTATION);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			lock_rotation = !current;
  			view_menu->get_popup()->set_item_checked(idx, !current);
  			if (lock_rotation) {
  				locked_label->show();
  			} else {
  				locked_label->hide();
  			}
  
  		} break;
  		case VIEW_AUDIO_LISTENER: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_AUDIO_LISTENER);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			current = !current;
  			viewport->set_as_audio_listener(current);
  			view_menu->get_popup()->set_item_checked(idx, current);
  
  		} break;
  		case VIEW_AUDIO_DOPPLER: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_AUDIO_DOPPLER);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			current = !current;
  			camera->set_doppler_tracking(current ? Camera3D::DOPPLER_TRACKING_IDLE_STEP : Camera3D::DOPPLER_TRACKING_DISABLED);
  			view_menu->get_popup()->set_item_checked(idx, current);
  
  		} break;
  		case VIEW_CINEMATIC_PREVIEW: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_CINEMATIC_PREVIEW);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			current = !current;
  			view_menu->get_popup()->set_item_checked(idx, current);
  			previewing_cinema = true;
  			_toggle_cinema_preview(current);
  
  			if (current) {
  				preview_camera->hide();
  			} else {
  				if (previewing != NULL)
  					preview_camera->show();
  			}
  		} break;
  		case VIEW_GIZMOS: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_GIZMOS);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			current = !current;
  			if (current)
  				camera->set_cull_mask(((1 << 20) - 1) | (1 << (GIZMO_BASE_LAYER + index)) | (1 << GIZMO_EDIT_LAYER) | (1 << GIZMO_GRID_LAYER));
  			else
  				camera->set_cull_mask(((1 << 20) - 1) | (1 << (GIZMO_BASE_LAYER + index)) | (1 << GIZMO_GRID_LAYER));
  			view_menu->get_popup()->set_item_checked(idx, current);
  
  		} break;
  		case VIEW_HALF_RESOLUTION: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_HALF_RESOLUTION);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			current = !current;
  			view_menu->get_popup()->set_item_checked(idx, current);
  		} break;
  		case VIEW_INFORMATION: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_INFORMATION);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			view_menu->get_popup()->set_item_checked(idx, !current);
  
  		} break;
  		case VIEW_FPS: {
  
  			int idx = view_menu->get_popup()->get_item_index(VIEW_FPS);
  			bool current = view_menu->get_popup()->is_item_checked(idx);
  			view_menu->get_popup()->set_item_checked(idx, !current);
  
  		} break;
  		case VIEW_DISPLAY_NORMAL:
  		case VIEW_DISPLAY_WIREFRAME:
  		case VIEW_DISPLAY_OVERDRAW:
  		case VIEW_DISPLAY_SHADELESS:
  		case VIEW_DISPLAY_LIGHTING:
  		case VIEW_DISPLAY_NORMAL_BUFFER:
  		case VIEW_DISPLAY_DEBUG_SHADOW_ATLAS:
  		case VIEW_DISPLAY_DEBUG_DIRECTIONAL_SHADOW_ATLAS:
  		case VIEW_DISPLAY_DEBUG_GIPROBE_ALBEDO:
  		case VIEW_DISPLAY_DEBUG_GIPROBE_LIGHTING:
  		case VIEW_DISPLAY_DEBUG_GIPROBE_EMISSION:
  		case VIEW_DISPLAY_DEBUG_SCENE_LUMINANCE:
  		case VIEW_DISPLAY_DEBUG_SSAO:
  		case VIEW_DISPLAY_DEBUG_ROUGHNESS_LIMITER: {
  
  			static const int display_options[] = {
  				VIEW_DISPLAY_NORMAL,
  				VIEW_DISPLAY_WIREFRAME,
  				VIEW_DISPLAY_OVERDRAW,
  				VIEW_DISPLAY_SHADELESS,
  				VIEW_DISPLAY_LIGHTING,
  				VIEW_DISPLAY_NORMAL_BUFFER,
  				VIEW_DISPLAY_WIREFRAME,
  				VIEW_DISPLAY_DEBUG_SHADOW_ATLAS,
  				VIEW_DISPLAY_DEBUG_DIRECTIONAL_SHADOW_ATLAS,
  				VIEW_DISPLAY_DEBUG_GIPROBE_ALBEDO,
  				VIEW_DISPLAY_DEBUG_GIPROBE_LIGHTING,
  				VIEW_DISPLAY_DEBUG_GIPROBE_EMISSION,
  				VIEW_DISPLAY_DEBUG_SCENE_LUMINANCE,
  				VIEW_DISPLAY_DEBUG_SSAO,
  				VIEW_DISPLAY_DEBUG_ROUGHNESS_LIMITER,
  				VIEW_MAX
  			};
  			static const Viewport::DebugDraw debug_draw_modes[] = {
  				Viewport::DEBUG_DRAW_DISABLED,
  				Viewport::DEBUG_DRAW_WIREFRAME,
  				Viewport::DEBUG_DRAW_OVERDRAW,
  				Viewport::DEBUG_DRAW_UNSHADED,
  				Viewport::DEBUG_DRAW_LIGHTING,
  				Viewport::DEBUG_DRAW_NORMAL_BUFFER,
  				Viewport::DEBUG_DRAW_WIREFRAME,
  				Viewport::DEBUG_DRAW_SHADOW_ATLAS,
  				Viewport::DEBUG_DRAW_DIRECTIONAL_SHADOW_ATLAS,
  				Viewport::DEBUG_DRAW_GI_PROBE_ALBEDO,
  				Viewport::DEBUG_DRAW_GI_PROBE_LIGHTING,
  				Viewport::DEBUG_DRAW_GI_PROBE_EMISSION,
  				Viewport::DEBUG_DRAW_SCENE_LUMINANCE,
  				Viewport::DEBUG_DRAW_SSAO,
  				Viewport::DEBUG_DRAW_ROUGHNESS_LIMITER,
  			};
  
  			int idx = 0;
  
  			while (display_options[idx] != VIEW_MAX) {
  
  				int id = display_options[idx];
  				int item_idx = view_menu->get_popup()->get_item_index(id);
  				if (item_idx != -1) {
  					view_menu->get_popup()->set_item_checked(item_idx, id == p_option);
  				}
  				item_idx = display_submenu->get_item_index(id);
  				if (item_idx != -1) {
  					display_submenu->set_item_checked(item_idx, id == p_option);
  				}
  
  				if (id == p_option) {
  					viewport->set_debug_draw(debug_draw_modes[idx]);
  				}
  				idx++;
  			}
  		} break;
  	}
  }
  
  void Node3DEditorViewport::_set_auto_orthogonal() {
  	if (!orthogonal && view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_AUTO_ORTHOGONAL))) {
  		_menu_option(VIEW_ORTHOGONAL);
  		auto_orthogonal = true;
  	}
  }
  
  void Node3DEditorViewport::_preview_exited_scene() {
  
  	preview_camera->disconnect("toggled", callable_mp(this, &Node3DEditorViewport::_toggle_camera_preview));
  	preview_camera->set_pressed(false);
  	_toggle_camera_preview(false);
  	preview_camera->connect("toggled", callable_mp(this, &Node3DEditorViewport::_toggle_camera_preview));
  	view_menu->show();
  }
  
  void Node3DEditorViewport::_init_gizmo_instance(int p_idx) {
  
  	uint32_t layer = 1 << (GIZMO_BASE_LAYER + p_idx);
  
  	for (int i = 0; i < 3; i++) {
  		move_gizmo_instance[i] = RS::get_singleton()->instance_create();
  		RS::get_singleton()->instance_set_base(move_gizmo_instance[i], spatial_editor->get_move_gizmo(i)->get_rid());
  		RS::get_singleton()->instance_set_scenario(move_gizmo_instance[i], get_tree()->get_root()->get_world()->get_scenario());
  		RS::get_singleton()->instance_set_visible(move_gizmo_instance[i], false);
  		RS::get_singleton()->instance_geometry_set_cast_shadows_setting(move_gizmo_instance[i], RS::SHADOW_CASTING_SETTING_OFF);
  		RS::get_singleton()->instance_set_layer_mask(move_gizmo_instance[i], layer);
  
  		move_plane_gizmo_instance[i] = RS::get_singleton()->instance_create();
  		RS::get_singleton()->instance_set_base(move_plane_gizmo_instance[i], spatial_editor->get_move_plane_gizmo(i)->get_rid());
  		RS::get_singleton()->instance_set_scenario(move_plane_gizmo_instance[i], get_tree()->get_root()->get_world()->get_scenario());
  		RS::get_singleton()->instance_set_visible(move_plane_gizmo_instance[i], false);
  		RS::get_singleton()->instance_geometry_set_cast_shadows_setting(move_plane_gizmo_instance[i], RS::SHADOW_CASTING_SETTING_OFF);
  		RS::get_singleton()->instance_set_layer_mask(move_plane_gizmo_instance[i], layer);
  
  		rotate_gizmo_instance[i] = RS::get_singleton()->instance_create();
  		RS::get_singleton()->instance_set_base(rotate_gizmo_instance[i], spatial_editor->get_rotate_gizmo(i)->get_rid());
  		RS::get_singleton()->instance_set_scenario(rotate_gizmo_instance[i], get_tree()->get_root()->get_world()->get_scenario());
  		RS::get_singleton()->instance_set_visible(rotate_gizmo_instance[i], false);
  		RS::get_singleton()->instance_geometry_set_cast_shadows_setting(rotate_gizmo_instance[i], RS::SHADOW_CASTING_SETTING_OFF);
  		RS::get_singleton()->instance_set_layer_mask(rotate_gizmo_instance[i], layer);
  
  		scale_gizmo_instance[i] = RS::get_singleton()->instance_create();
  		RS::get_singleton()->instance_set_base(scale_gizmo_instance[i], spatial_editor->get_scale_gizmo(i)->get_rid());
  		RS::get_singleton()->instance_set_scenario(scale_gizmo_instance[i], get_tree()->get_root()->get_world()->get_scenario());
  		RS::get_singleton()->instance_set_visible(scale_gizmo_instance[i], false);
  		RS::get_singleton()->instance_geometry_set_cast_shadows_setting(scale_gizmo_instance[i], RS::SHADOW_CASTING_SETTING_OFF);
  		RS::get_singleton()->instance_set_layer_mask(scale_gizmo_instance[i], layer);
  
  		scale_plane_gizmo_instance[i] = RS::get_singleton()->instance_create();
  		RS::get_singleton()->instance_set_base(scale_plane_gizmo_instance[i], spatial_editor->get_scale_plane_gizmo(i)->get_rid());
  		RS::get_singleton()->instance_set_scenario(scale_plane_gizmo_instance[i], get_tree()->get_root()->get_world()->get_scenario());
  		RS::get_singleton()->instance_set_visible(scale_plane_gizmo_instance[i], false);
  		RS::get_singleton()->instance_geometry_set_cast_shadows_setting(scale_plane_gizmo_instance[i], RS::SHADOW_CASTING_SETTING_OFF);
  		RS::get_singleton()->instance_set_layer_mask(scale_plane_gizmo_instance[i], layer);
  	}
  }
  
  void Node3DEditorViewport::_finish_gizmo_instances() {
  
  	for (int i = 0; i < 3; i++) {
  		RS::get_singleton()->free(move_gizmo_instance[i]);
  		RS::get_singleton()->free(move_plane_gizmo_instance[i]);
  		RS::get_singleton()->free(rotate_gizmo_instance[i]);
  		RS::get_singleton()->free(scale_gizmo_instance[i]);
  		RS::get_singleton()->free(scale_plane_gizmo_instance[i]);
  	}
  }
  void Node3DEditorViewport::_toggle_camera_preview(bool p_activate) {
  
  	ERR_FAIL_COND(p_activate && !preview);
  	ERR_FAIL_COND(!p_activate && !previewing);
  
  	if (!p_activate) {
  
  		previewing->disconnect("tree_exiting", callable_mp(this, &Node3DEditorViewport::_preview_exited_scene));
  		previewing = NULL;
  		RS::get_singleton()->viewport_attach_camera(viewport->get_viewport_rid(), camera->get_camera()); //restore
  		if (!preview)
  			preview_camera->hide();
  		view_menu->set_disabled(false);
  		surface->update();
  
  	} else {
  
  		previewing = preview;
  		previewing->connect("tree_exiting", callable_mp(this, &Node3DEditorViewport::_preview_exited_scene));
  		RS::get_singleton()->viewport_attach_camera(viewport->get_viewport_rid(), preview->get_camera()); //replace
  		view_menu->set_disabled(true);
  		surface->update();
  	}
  }
  
  void Node3DEditorViewport::_toggle_cinema_preview(bool p_activate) {
  	previewing_cinema = p_activate;
  	if (!previewing_cinema) {
  		if (previewing != NULL)
  			previewing->disconnect("tree_exited", callable_mp(this, &Node3DEditorViewport::_preview_exited_scene));
  
  		previewing = NULL;
  		RS::get_singleton()->viewport_attach_camera(viewport->get_viewport_rid(), camera->get_camera()); //restore
  		preview_camera->set_pressed(false);
  		if (!preview) {
  			preview_camera->hide();
  		} else {
  			preview_camera->show();
  		}
  		view_menu->show();
  		surface->update();
  	}
  }
  
  void Node3DEditorViewport::_selection_result_pressed(int p_result) {
  
  	if (selection_results.size() <= p_result)
  		return;
  
  	clicked = selection_results[p_result].item->get_instance_id();
  
  	if (clicked.is_valid()) {
  		_select_clicked(clicked_wants_append, true, spatial_editor->get_tool_mode() != Node3DEditor::TOOL_MODE_LIST_SELECT);
  		clicked = ObjectID();
  	}
  }
  
  void Node3DEditorViewport::_selection_menu_hide() {
  
  	selection_results.clear();
  	selection_menu->clear();
  	selection_menu->set_size(Vector2(0, 0));
  }
  
  void Node3DEditorViewport::set_can_preview(Camera3D *p_preview) {
  
  	preview = p_preview;
  
  	if (!preview_camera->is_pressed() && !previewing_cinema)
  		preview_camera->set_visible(p_preview);
  }
  
  void Node3DEditorViewport::update_transform_gizmo_view() {
  
  	if (!is_visible_in_tree())
  		return;
  
  	Transform xform = spatial_editor->get_gizmo_transform();
  
  	Transform camera_xform = camera->get_transform();
  
  	if (xform.origin.distance_squared_to(camera_xform.origin) < 0.01) {
  		for (int i = 0; i < 3; i++) {
  			RenderingServer::get_singleton()->instance_set_visible(move_gizmo_instance[i], false);
  			RenderingServer::get_singleton()->instance_set_visible(move_plane_gizmo_instance[i], false);
  			RenderingServer::get_singleton()->instance_set_visible(rotate_gizmo_instance[i], false);
  			RenderingServer::get_singleton()->instance_set_visible(scale_gizmo_instance[i], false);
  			RenderingServer::get_singleton()->instance_set_visible(scale_plane_gizmo_instance[i], false);
  		}
  		return;
  	}
  
  	Vector3 camz = -camera_xform.get_basis().get_axis(2).normalized();
  	Vector3 camy = -camera_xform.get_basis().get_axis(1).normalized();
  	Plane p(camera_xform.origin, camz);
  	float gizmo_d = Math::abs(p.distance_to(xform.origin));
  	float d0 = camera->unproject_position(camera_xform.origin + camz * gizmo_d).y;
  	float d1 = camera->unproject_position(camera_xform.origin + camz * gizmo_d + camy).y;
  	float dd = Math::abs(d0 - d1);
  	if (dd == 0)
  		dd = 0.0001;
  
  	float gizmo_size = EditorSettings::get_singleton()->get("editors/3d/manipulator_gizmo_size");
  	// At low viewport heights, multiply the gizmo scale based on the viewport height.
  	// This prevents the gizmo from growing very large and going outside the viewport.
  	const int viewport_base_height = 400 * MAX(1, EDSCALE);
  	gizmo_scale =
  			(gizmo_size / Math::abs(dd)) * MAX(1, EDSCALE) *
  			MIN(viewport_base_height, viewport_container->get_size().height) / viewport_base_height /
  			viewport_container->get_stretch_shrink();
  	Vector3 scale = Vector3(1, 1, 1) * gizmo_scale;
  
  	xform.basis.scale(scale);
  
  	for (int i = 0; i < 3; i++) {
  		RenderingServer::get_singleton()->instance_set_transform(move_gizmo_instance[i], xform);
  		RenderingServer::get_singleton()->instance_set_visible(move_gizmo_instance[i], spatial_editor->is_gizmo_visible() && (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SELECT || spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_MOVE));
  		RenderingServer::get_singleton()->instance_set_transform(move_plane_gizmo_instance[i], xform);
  		RenderingServer::get_singleton()->instance_set_visible(move_plane_gizmo_instance[i], spatial_editor->is_gizmo_visible() && (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SELECT || spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_MOVE));
  		RenderingServer::get_singleton()->instance_set_transform(rotate_gizmo_instance[i], xform);
  		RenderingServer::get_singleton()->instance_set_visible(rotate_gizmo_instance[i], spatial_editor->is_gizmo_visible() && (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SELECT || spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_ROTATE));
  		RenderingServer::get_singleton()->instance_set_transform(scale_gizmo_instance[i], xform);
  		RenderingServer::get_singleton()->instance_set_visible(scale_gizmo_instance[i], spatial_editor->is_gizmo_visible() && (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SCALE));
  		RenderingServer::get_singleton()->instance_set_transform(scale_plane_gizmo_instance[i], xform);
  		RenderingServer::get_singleton()->instance_set_visible(scale_plane_gizmo_instance[i], spatial_editor->is_gizmo_visible() && (spatial_editor->get_tool_mode() == Node3DEditor::TOOL_MODE_SCALE));
  	}
  }
  
  void Node3DEditorViewport::set_state(const Dictionary &p_state) {
  
  	if (p_state.has("position"))
  		cursor.pos = p_state["position"];
  	if (p_state.has("x_rotation"))
  		cursor.x_rot = p_state["x_rotation"];
  	if (p_state.has("y_rotation"))
  		cursor.y_rot = p_state["y_rotation"];
  	if (p_state.has("distance"))
  		cursor.distance = p_state["distance"];
  
  	if (p_state.has("use_orthogonal")) {
  		bool orth = p_state["use_orthogonal"];
  
  		if (orth)
  			_menu_option(VIEW_ORTHOGONAL);
  		else
  			_menu_option(VIEW_PERSPECTIVE);
  	}
  	if (p_state.has("view_name")) {
  		name = p_state["view_name"];
  		_update_name();
  	}
  	if (p_state.has("auto_orthogonal")) {
  		auto_orthogonal = p_state["auto_orthogonal"];
  		_update_name();
  	}
  	if (p_state.has("auto_orthogonal_enabled")) {
  		bool enabled = p_state["auto_orthogonal_enabled"];
  		view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_AUTO_ORTHOGONAL), enabled);
  	}
  	if (p_state.has("display_mode")) {
  		int display = p_state["display_mode"];
  
  		int idx = view_menu->get_popup()->get_item_index(display);
  		if (!view_menu->get_popup()->is_item_checked(idx))
  			_menu_option(display);
  	}
  	if (p_state.has("lock_rotation")) {
  		lock_rotation = p_state["lock_rotation"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_LOCK_ROTATION);
  		view_menu->get_popup()->set_item_checked(idx, lock_rotation);
  	}
  	if (p_state.has("use_environment")) {
  		bool env = p_state["use_environment"];
  
  		if (env != camera->get_environment().is_valid())
  			_menu_option(VIEW_ENVIRONMENT);
  	}
  	if (p_state.has("listener")) {
  		bool listener = p_state["listener"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_AUDIO_LISTENER);
  		viewport->set_as_audio_listener(listener);
  		view_menu->get_popup()->set_item_checked(idx, listener);
  	}
  	if (p_state.has("doppler")) {
  		bool doppler = p_state["doppler"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_AUDIO_DOPPLER);
  		camera->set_doppler_tracking(doppler ? Camera3D::DOPPLER_TRACKING_IDLE_STEP : Camera3D::DOPPLER_TRACKING_DISABLED);
  		view_menu->get_popup()->set_item_checked(idx, doppler);
  	}
  	if (p_state.has("gizmos")) {
  		bool gizmos = p_state["gizmos"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_GIZMOS);
  		if (view_menu->get_popup()->is_item_checked(idx) != gizmos)
  			_menu_option(VIEW_GIZMOS);
  	}
  	if (p_state.has("information")) {
  		bool information = p_state["information"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_INFORMATION);
  		if (view_menu->get_popup()->is_item_checked(idx) != information)
  			_menu_option(VIEW_INFORMATION);
  	}
  	if (p_state.has("fps")) {
  		bool fps = p_state["fps"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_FPS);
  		if (view_menu->get_popup()->is_item_checked(idx) != fps)
  			_menu_option(VIEW_FPS);
  	}
  	if (p_state.has("half_res")) {
  		bool half_res = p_state["half_res"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_HALF_RESOLUTION);
  		view_menu->get_popup()->set_item_checked(idx, half_res);
  	}
  	if (p_state.has("cinematic_preview")) {
  		previewing_cinema = p_state["cinematic_preview"];
  
  		int idx = view_menu->get_popup()->get_item_index(VIEW_CINEMATIC_PREVIEW);
  		view_menu->get_popup()->set_item_checked(idx, previewing_cinema);
  	}
  
  	if (preview_camera->is_connected("toggled", callable_mp(this, &Node3DEditorViewport::_toggle_camera_preview))) {
  		preview_camera->disconnect("toggled", callable_mp(this, &Node3DEditorViewport::_toggle_camera_preview));
  	}
  	if (p_state.has("previewing")) {
  		Node *pv = EditorNode::get_singleton()->get_edited_scene()->get_node(p_state["previewing"]);
  		if (Object::cast_to<Camera3D>(pv)) {
  			previewing = Object::cast_to<Camera3D>(pv);
  			previewing->connect("tree_exiting", callable_mp(this, &Node3DEditorViewport::_preview_exited_scene));
  			RS::get_singleton()->viewport_attach_camera(viewport->get_viewport_rid(), previewing->get_camera()); //replace
  			view_menu->set_disabled(true);
  			surface->update();
  			preview_camera->set_pressed(true);
  			preview_camera->show();
  		}
  	}
  	preview_camera->connect("toggled", callable_mp(this, &Node3DEditorViewport::_toggle_camera_preview));
  }
  
  Dictionary Node3DEditorViewport::get_state() const {
  
  	Dictionary d;
  	d["position"] = cursor.pos;
  	d["x_rotation"] = cursor.x_rot;
  	d["y_rotation"] = cursor.y_rot;
  	d["distance"] = cursor.distance;
  	d["use_environment"] = camera->get_environment().is_valid();
  	d["use_orthogonal"] = camera->get_projection() == Camera3D::PROJECTION_ORTHOGONAL;
  	d["view_name"] = name;
  	d["auto_orthogonal"] = auto_orthogonal;
  	d["auto_orthogonal_enabled"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_AUTO_ORTHOGONAL));
  	if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_DISPLAY_NORMAL)))
  		d["display_mode"] = VIEW_DISPLAY_NORMAL;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_DISPLAY_WIREFRAME)))
  		d["display_mode"] = VIEW_DISPLAY_WIREFRAME;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_DISPLAY_OVERDRAW)))
  		d["display_mode"] = VIEW_DISPLAY_OVERDRAW;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_DISPLAY_SHADELESS)))
  		d["display_mode"] = VIEW_DISPLAY_SHADELESS;
  	d["listener"] = viewport->is_audio_listener();
  	d["doppler"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_AUDIO_DOPPLER));
  	d["gizmos"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_GIZMOS));
  	d["information"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_INFORMATION));
  	d["fps"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_FPS));
  	d["half_res"] = viewport_container->get_stretch_shrink() > 1;
  	d["cinematic_preview"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(VIEW_CINEMATIC_PREVIEW));
  	if (previewing)
  		d["previewing"] = EditorNode::get_singleton()->get_edited_scene()->get_path_to(previewing);
  	if (lock_rotation)
  		d["lock_rotation"] = lock_rotation;
  
  	return d;
  }
  
  void Node3DEditorViewport::_bind_methods() {
  
  	ClassDB::bind_method(D_METHOD("update_transform_gizmo_view"), &Node3DEditorViewport::update_transform_gizmo_view); // Used by call_deferred.
  	ClassDB::bind_method(D_METHOD("can_drop_data_fw"), &Node3DEditorViewport::can_drop_data_fw);
  	ClassDB::bind_method(D_METHOD("drop_data_fw"), &Node3DEditorViewport::drop_data_fw);
  
  	ADD_SIGNAL(MethodInfo("toggle_maximize_view", PropertyInfo(Variant::OBJECT, "viewport")));
  	ADD_SIGNAL(MethodInfo("clicked", PropertyInfo(Variant::OBJECT, "viewport")));
  }
  
  void Node3DEditorViewport::reset() {
  
  	orthogonal = false;
  	auto_orthogonal = false;
  	lock_rotation = false;
  	message_time = 0;
  	message = "";
  	last_message = "";
  	name = "";
  
  	cursor.x_rot = 0.5;
  	cursor.y_rot = 0.5;
  	cursor.distance = 4;
  	cursor.region_select = false;
  	cursor.pos = Vector3();
  	_update_name();
  }
  
  void Node3DEditorViewport::focus_selection() {
  	if (!get_selected_count())
  		return;
  
  	Vector3 center;
  	int count = 0;
  
  	List<Node *> &selection = editor_selection->get_selected_node_list();
  
  	for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  		Node3D *sp = Object::cast_to<Node3D>(E->get());
  		if (!sp)
  			continue;
  
  		Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  		if (!se)
  			continue;
  
  		center += sp->get_global_gizmo_transform().origin;
  		count++;
  	}
  
  	if (count != 0) {
  		center /= float(count);
  	}
  
  	cursor.pos = center;
  }
  
  void Node3DEditorViewport::assign_pending_data_pointers(Node3D *p_preview_node, AABB *p_preview_bounds, AcceptDialog *p_accept) {
  	preview_node = p_preview_node;
  	preview_bounds = p_preview_bounds;
  	accept = p_accept;
  }
  
  Vector3 Node3DEditorViewport::_get_instance_position(const Point2 &p_pos) const {
  	const float MAX_DISTANCE = 10;
  
  	Vector3 world_ray = _get_ray(p_pos);
  	Vector3 world_pos = _get_ray_pos(p_pos);
  
  	Vector<ObjectID> instances = RenderingServer::get_singleton()->instances_cull_ray(world_pos, world_ray, get_tree()->get_root()->get_world()->get_scenario());
  	Set<Ref<EditorNode3DGizmo>> found_gizmos;
  
  	float closest_dist = MAX_DISTANCE;
  
  	Vector3 point = world_pos + world_ray * MAX_DISTANCE;
  	Vector3 normal = Vector3(0.0, 0.0, 0.0);
  
  	for (int i = 0; i < instances.size(); i++) {
  
  		MeshInstance3D *mesh_instance = Object::cast_to<MeshInstance3D>(ObjectDB::get_instance(instances[i]));
  
  		if (!mesh_instance)
  			continue;
  
  		Ref<EditorNode3DGizmo> seg = mesh_instance->get_gizmo();
  
  		if ((!seg.is_valid()) || found_gizmos.has(seg)) {
  			continue;
  		}
  
  		found_gizmos.insert(seg);
  
  		Vector3 hit_point;
  		Vector3 hit_normal;
  		bool inters = seg->intersect_ray(camera, p_pos, hit_point, hit_normal, NULL, false);
  
  		if (!inters)
  			continue;
  
  		float dist = world_pos.distance_to(hit_point);
  
  		if (dist < 0)
  			continue;
  
  		if (dist < closest_dist) {
  			closest_dist = dist;
  			point = hit_point;
  			normal = hit_normal;
  		}
  	}
  	Vector3 offset = Vector3();
  	for (int i = 0; i < 3; i++) {
  		if (normal[i] > 0.0)
  			offset[i] = (preview_bounds->get_size()[i] - (preview_bounds->get_size()[i] + preview_bounds->get_position()[i]));
  		else if (normal[i] < 0.0)
  			offset[i] = -(preview_bounds->get_size()[i] + preview_bounds->get_position()[i]);
  	}
  	return point + offset;
  }
  
  AABB Node3DEditorViewport::_calculate_spatial_bounds(const Node3D *p_parent, bool p_exclude_toplevel_transform) {
  	AABB bounds;
  
  	const MeshInstance3D *mesh_instance = Object::cast_to<MeshInstance3D>(p_parent);
  	if (mesh_instance) {
  		bounds = mesh_instance->get_aabb();
  	}
  
  	for (int i = 0; i < p_parent->get_child_count(); i++) {
  		Node3D *child = Object::cast_to<Node3D>(p_parent->get_child(i));
  		if (child) {
  			AABB child_bounds = _calculate_spatial_bounds(child, false);
  
  			if (bounds.size == Vector3() && p_parent->get_class_name() == StringName("Node3D")) {
  				bounds = child_bounds;
  			} else {
  				bounds.merge_with(child_bounds);
  			}
  		}
  	}
  
  	if (bounds.size == Vector3() && p_parent->get_class_name() != StringName("Node3D")) {
  		bounds = AABB(Vector3(-0.2, -0.2, -0.2), Vector3(0.4, 0.4, 0.4));
  	}
  
  	if (!p_exclude_toplevel_transform) {
  		bounds = p_parent->get_transform().xform(bounds);
  	}
  
  	return bounds;
  }
  
  void Node3DEditorViewport::_create_preview(const Vector<String> &files) const {
  	for (int i = 0; i < files.size(); i++) {
  		String path = files[i];
  		RES res = ResourceLoader::load(path);
  		ERR_CONTINUE(res.is_null());
  		Ref<PackedScene> scene = Ref<PackedScene>(Object::cast_to<PackedScene>(*res));
  		Ref<Mesh> mesh = Ref<Mesh>(Object::cast_to<Mesh>(*res));
  		if (mesh != NULL || scene != NULL) {
  			if (mesh != NULL) {
  				MeshInstance3D *mesh_instance = memnew(MeshInstance3D);
  				mesh_instance->set_mesh(mesh);
  				preview_node->add_child(mesh_instance);
  			} else {
  				if (scene.is_valid()) {
  					Node *instance = scene->instance();
  					if (instance) {
  						preview_node->add_child(instance);
  					}
  				}
  			}
  			editor->get_scene_root()->add_child(preview_node);
  		}
  	}
  	*preview_bounds = _calculate_spatial_bounds(preview_node);
  }
  
  void Node3DEditorViewport::_remove_preview() {
  	if (preview_node->get_parent()) {
  		for (int i = preview_node->get_child_count() - 1; i >= 0; i--) {
  			Node *node = preview_node->get_child(i);
  			node->queue_delete();
  			preview_node->remove_child(node);
  		}
  		editor->get_scene_root()->remove_child(preview_node);
  	}
  }
  
  bool Node3DEditorViewport::_cyclical_dependency_exists(const String &p_target_scene_path, Node *p_desired_node) {
  	if (p_desired_node->get_filename() == p_target_scene_path) {
  		return true;
  	}
  
  	int childCount = p_desired_node->get_child_count();
  	for (int i = 0; i < childCount; i++) {
  		Node *child = p_desired_node->get_child(i);
  		if (_cyclical_dependency_exists(p_target_scene_path, child)) {
  			return true;
  		}
  	}
  	return false;
  }
  
  bool Node3DEditorViewport::_create_instance(Node *parent, String &path, const Point2 &p_point) {
  	RES res = ResourceLoader::load(path);
  	ERR_FAIL_COND_V(res.is_null(), false);
  
  	Ref<PackedScene> scene = Ref<PackedScene>(Object::cast_to<PackedScene>(*res));
  	Ref<Mesh> mesh = Ref<Mesh>(Object::cast_to<Mesh>(*res));
  
  	Node *instanced_scene = NULL;
  
  	if (mesh != NULL || scene != NULL) {
  		if (mesh != NULL) {
  			MeshInstance3D *mesh_instance = memnew(MeshInstance3D);
  			mesh_instance->set_mesh(mesh);
  			mesh_instance->set_name(path.get_file().get_basename());
  			instanced_scene = mesh_instance;
  		} else {
  			if (!scene.is_valid()) { // invalid scene
  				return false;
  			} else {
  				instanced_scene = scene->instance(PackedScene::GEN_EDIT_STATE_INSTANCE);
  			}
  		}
  	}
  
  	if (instanced_scene == NULL) {
  		return false;
  	}
  
  	if (editor->get_edited_scene()->get_filename() != "") { // cyclical instancing
  		if (_cyclical_dependency_exists(editor->get_edited_scene()->get_filename(), instanced_scene)) {
  			memdelete(instanced_scene);
  			return false;
  		}
  	}
  
  	if (scene != NULL) {
  		instanced_scene->set_filename(ProjectSettings::get_singleton()->localize_path(path));
  	}
  
  	editor_data->get_undo_redo().add_do_method(parent, "add_child", instanced_scene);
  	editor_data->get_undo_redo().add_do_method(instanced_scene, "set_owner", editor->get_edited_scene());
  	editor_data->get_undo_redo().add_do_reference(instanced_scene);
  	editor_data->get_undo_redo().add_undo_method(parent, "remove_child", instanced_scene);
  
  	String new_name = parent->validate_child_name(instanced_scene);
  	EditorDebuggerNode *ed = EditorDebuggerNode::get_singleton();
  	editor_data->get_undo_redo().add_do_method(ed, "live_debug_instance_node", editor->get_edited_scene()->get_path_to(parent), path, new_name);
  	editor_data->get_undo_redo().add_undo_method(ed, "live_debug_remove_node", NodePath(String(editor->get_edited_scene()->get_path_to(parent)) + "/" + new_name));
  
  	Transform global_transform;
  	Node3D *parent_spatial = Object::cast_to<Node3D>(parent);
  	if (parent_spatial)
  		global_transform = parent_spatial->get_global_gizmo_transform();
  
  	global_transform.origin = spatial_editor->snap_point(_get_instance_position(p_point));
  
  	editor_data->get_undo_redo().add_do_method(instanced_scene, "set_global_transform", global_transform);
  
  	return true;
  }
  
  void Node3DEditorViewport::_perform_drop_data() {
  	_remove_preview();
  
  	Vector<String> error_files;
  
  	editor_data->get_undo_redo().create_action(TTR("Create Node"));
  
  	for (int i = 0; i < selected_files.size(); i++) {
  		String path = selected_files[i];
  		RES res = ResourceLoader::load(path);
  		if (res.is_null()) {
  			continue;
  		}
  		Ref<PackedScene> scene = Ref<PackedScene>(Object::cast_to<PackedScene>(*res));
  		Ref<Mesh> mesh = Ref<Mesh>(Object::cast_to<Mesh>(*res));
  		if (mesh != NULL || scene != NULL) {
  			bool success = _create_instance(target_node, path, drop_pos);
  			if (!success) {
  				error_files.push_back(path);
  			}
  		}
  	}
  
  	editor_data->get_undo_redo().commit_action();
  
  	if (error_files.size() > 0) {
  		String files_str;
  		for (int i = 0; i < error_files.size(); i++) {
  			files_str += error_files[i].get_file().get_basename() + ",";
  		}
  		files_str = files_str.substr(0, files_str.length() - 1);
  		accept->set_text(vformat(TTR("Error instancing scene from %s"), files_str.c_str()));
  		accept->popup_centered();
  	}
  }
  
  bool Node3DEditorViewport::can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const {
  
  	bool can_instance = false;
  
  	if (!preview_node->is_inside_tree()) {
  		Dictionary d = p_data;
  		if (d.has("type") && (String(d["type"]) == "files")) {
  			Vector<String> files = d["files"];
  
  			List<String> scene_extensions;
  			ResourceLoader::get_recognized_extensions_for_type("PackedScene", &scene_extensions);
  			List<String> mesh_extensions;
  			ResourceLoader::get_recognized_extensions_for_type("Mesh", &mesh_extensions);
  
  			for (int i = 0; i < files.size(); i++) {
  				if (mesh_extensions.find(files[i].get_extension()) || scene_extensions.find(files[i].get_extension())) {
  					RES res = ResourceLoader::load(files[i]);
  					if (res.is_null()) {
  						continue;
  					}
  
  					String type = res->get_class();
  					if (type == "PackedScene") {
  						Ref<PackedScene> sdata = ResourceLoader::load(files[i]);
  						Node *instanced_scene = sdata->instance(PackedScene::GEN_EDIT_STATE_INSTANCE);
  						if (!instanced_scene) {
  							continue;
  						}
  						memdelete(instanced_scene);
  					} else if (type == "Mesh" || type == "ArrayMesh" || type == "PrimitiveMesh") {
  						Ref<Mesh> mesh = ResourceLoader::load(files[i]);
  						if (!mesh.is_valid()) {
  							continue;
  						}
  					} else {
  						continue;
  					}
  					can_instance = true;
  					break;
  				}
  			}
  			if (can_instance) {
  				_create_preview(files);
  			}
  		}
  	} else {
  		can_instance = true;
  	}
  
  	if (can_instance) {
  		Transform global_transform = Transform(Basis(), _get_instance_position(p_point));
  		preview_node->set_global_transform(global_transform);
  	}
  
  	return can_instance;
  }
  
  void Node3DEditorViewport::drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) {
  	if (!can_drop_data_fw(p_point, p_data, p_from))
  		return;
  
  	bool is_shift = InputFilter::get_singleton()->is_key_pressed(KEY_SHIFT);
  
  	selected_files.clear();
  	Dictionary d = p_data;
  	if (d.has("type") && String(d["type"]) == "files") {
  		selected_files = d["files"];
  	}
  
  	List<Node *> list = editor->get_editor_selection()->get_selected_node_list();
  	if (list.size() == 0) {
  		Node *root_node = editor->get_edited_scene();
  		if (root_node) {
  			list.push_back(root_node);
  		} else {
  			accept->set_text(TTR("No parent to instance a child at."));
  			accept->popup_centered();
  			_remove_preview();
  			return;
  		}
  	}
  	if (list.size() != 1) {
  		accept->set_text(TTR("This operation requires a single selected node."));
  		accept->popup_centered();
  		_remove_preview();
  		return;
  	}
  
  	target_node = list[0];
  	if (is_shift && target_node != editor->get_edited_scene()) {
  		target_node = target_node->get_parent();
  	}
  	drop_pos = p_point;
  
  	_perform_drop_data();
  }
  
  Node3DEditorViewport::Node3DEditorViewport(Node3DEditor *p_spatial_editor, EditorNode *p_editor, int p_index) {
  
  	_edit.mode = TRANSFORM_NONE;
  	_edit.plane = TRANSFORM_VIEW;
  	_edit.edited_gizmo = 0;
  	_edit.snap = 1;
  	_edit.gizmo_handle = 0;
  
  	index = p_index;
  	editor = p_editor;
  	editor_data = editor->get_scene_tree_dock()->get_editor_data();
  	editor_selection = editor->get_editor_selection();
  	undo_redo = editor->get_undo_redo();
  
  	clicked_includes_current = false;
  	orthogonal = false;
  	auto_orthogonal = false;
  	lock_rotation = false;
  	message_time = 0;
  	zoom_indicator_delay = 0.0;
  
  	spatial_editor = p_spatial_editor;
  	ViewportContainer *c = memnew(ViewportContainer);
  	viewport_container = c;
  	c->set_stretch(true);
  	add_child(c);
  	c->set_anchors_and_margins_preset(Control::PRESET_WIDE);
  	viewport = memnew(SubViewport);
  	viewport->set_disable_input(true);
  
  	c->add_child(viewport);
  	surface = memnew(Control);
  	surface->set_drag_forwarding(this);
  	add_child(surface);
  	surface->set_anchors_and_margins_preset(Control::PRESET_WIDE);
  	surface->set_clip_contents(true);
  	camera = memnew(Camera3D);
  	camera->set_disable_gizmo(true);
  	camera->set_cull_mask(((1 << 20) - 1) | (1 << (GIZMO_BASE_LAYER + p_index)) | (1 << GIZMO_EDIT_LAYER) | (1 << GIZMO_GRID_LAYER));
  	viewport->add_child(camera);
  	camera->make_current();
  	surface->set_focus_mode(FOCUS_ALL);
  
  	crosshair = memnew(TextureRect);
  	crosshair->set_mouse_filter(MOUSE_FILTER_IGNORE);
  	surface->add_child(crosshair);
  
  	VBoxContainer *vbox = memnew(VBoxContainer);
  	surface->add_child(vbox);
  	vbox->set_position(Point2(10, 10) * EDSCALE);
  
  	view_menu = memnew(MenuButton);
  	view_menu->set_flat(false);
  	vbox->add_child(view_menu);
  	view_menu->set_h_size_flags(0);
  
  	display_submenu = memnew(PopupMenu);
  	view_menu->get_popup()->add_child(display_submenu);
  
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/top_view"), VIEW_TOP);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/bottom_view"), VIEW_BOTTOM);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/left_view"), VIEW_LEFT);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/right_view"), VIEW_RIGHT);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/front_view"), VIEW_FRONT);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/rear_view"), VIEW_REAR);
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_radio_check_item(TTR("Perspective") + " (" + ED_GET_SHORTCUT("spatial_editor/switch_perspective_orthogonal")->get_as_text() + ")", VIEW_PERSPECTIVE);
  	view_menu->get_popup()->add_radio_check_item(TTR("Orthogonal") + " (" + ED_GET_SHORTCUT("spatial_editor/switch_perspective_orthogonal")->get_as_text() + ")", VIEW_ORTHOGONAL);
  	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_PERSPECTIVE), true);
  	view_menu->get_popup()->add_check_item(TTR("Auto Orthogonal Enabled"), VIEW_AUTO_ORTHOGONAL);
  	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_AUTO_ORTHOGONAL), true);
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_lock_rotation", TTR("Lock View Rotation")), VIEW_LOCK_ROTATION);
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_normal", TTR("Display Normal")), VIEW_DISPLAY_NORMAL);
  	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_wireframe", TTR("Display Wireframe")), VIEW_DISPLAY_WIREFRAME);
  	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_overdraw", TTR("Display Overdraw")), VIEW_DISPLAY_OVERDRAW);
  	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_lighting", TTR("Display Lighting")), VIEW_DISPLAY_LIGHTING);
  	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_unshaded", TTR("Display Unshaded")), VIEW_DISPLAY_SHADELESS);
  	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_DISPLAY_NORMAL), true);
  	display_submenu->add_radio_check_item(TTR("Normal Buffer"), VIEW_DISPLAY_NORMAL_BUFFER);
  	display_submenu->add_separator();
  	display_submenu->add_radio_check_item(TTR("Shadow Atlas"), VIEW_DISPLAY_DEBUG_SHADOW_ATLAS);
  	display_submenu->add_radio_check_item(TTR("Directional Shadow"), VIEW_DISPLAY_DEBUG_DIRECTIONAL_SHADOW_ATLAS);
  	display_submenu->add_separator();
  	display_submenu->add_radio_check_item(TTR("GIProbe Lighting"), VIEW_DISPLAY_DEBUG_GIPROBE_LIGHTING);
  	display_submenu->add_radio_check_item(TTR("GIProbe Albedo"), VIEW_DISPLAY_DEBUG_GIPROBE_ALBEDO);
  	display_submenu->add_radio_check_item(TTR("GIProbe Emission"), VIEW_DISPLAY_DEBUG_GIPROBE_EMISSION);
  	display_submenu->add_separator();
  	display_submenu->add_radio_check_item(TTR("Scene Luminance"), VIEW_DISPLAY_DEBUG_SCENE_LUMINANCE);
  	display_submenu->add_separator();
  	display_submenu->add_radio_check_item(TTR("SSAO"), VIEW_DISPLAY_DEBUG_SSAO);
  	display_submenu->add_separator();
  	display_submenu->add_radio_check_item(TTR("Roughness Limiter"), VIEW_DISPLAY_DEBUG_ROUGHNESS_LIMITER);
  	display_submenu->set_name("display_advanced");
  	view_menu->get_popup()->add_submenu_item(TTR("Display Advanced..."), "display_advanced", VIEW_DISPLAY_ADVANCED);
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_environment", TTR("View Environment")), VIEW_ENVIRONMENT);
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_gizmos", TTR("View Gizmos")), VIEW_GIZMOS);
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_information", TTR("View Information")), VIEW_INFORMATION);
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_fps", TTR("View FPS")), VIEW_FPS);
  	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_ENVIRONMENT), true);
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_half_resolution", TTR("Half Resolution")), VIEW_HALF_RESOLUTION);
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_audio_listener", TTR("Audio Listener")), VIEW_AUDIO_LISTENER);
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_audio_doppler", TTR("Enable Doppler")), VIEW_AUDIO_DOPPLER);
  	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_GIZMOS), true);
  
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_cinematic_preview", TTR("Cinematic Preview")), VIEW_CINEMATIC_PREVIEW);
  
  	view_menu->get_popup()->add_separator();
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/focus_origin"), VIEW_CENTER_TO_ORIGIN);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/focus_selection"), VIEW_CENTER_TO_SELECTION);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/align_transform_with_view"), VIEW_ALIGN_TRANSFORM_WITH_VIEW);
  	view_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("spatial_editor/align_rotation_with_view"), VIEW_ALIGN_ROTATION_WITH_VIEW);
  	view_menu->get_popup()->connect("id_pressed", callable_mp(this, &Node3DEditorViewport::_menu_option));
  	display_submenu->connect("id_pressed", callable_mp(this, &Node3DEditorViewport::_menu_option));
  	view_menu->set_disable_shortcuts(true);
  #ifndef _MSC_VER
  #warning this needs to be fixed
  #endif
  	//if (OS::get_singleton()->get_current_video_driver() == OS::VIDEO_DRIVER_GLES2) {
  	if (false) {
  		// Alternate display modes only work when using the Vulkan renderer; make this explicit.
  		const int normal_idx = view_menu->get_popup()->get_item_index(VIEW_DISPLAY_NORMAL);
  		const int wireframe_idx = view_menu->get_popup()->get_item_index(VIEW_DISPLAY_WIREFRAME);
  		const int overdraw_idx = view_menu->get_popup()->get_item_index(VIEW_DISPLAY_OVERDRAW);
  		const int shadeless_idx = view_menu->get_popup()->get_item_index(VIEW_DISPLAY_SHADELESS);
  		const String unsupported_tooltip = TTR("Not available when using the GLES2 renderer.");
  
  		view_menu->get_popup()->set_item_disabled(normal_idx, true);
  		view_menu->get_popup()->set_item_tooltip(normal_idx, unsupported_tooltip);
  		view_menu->get_popup()->set_item_disabled(wireframe_idx, true);
  		view_menu->get_popup()->set_item_tooltip(wireframe_idx, unsupported_tooltip);
  		view_menu->get_popup()->set_item_disabled(overdraw_idx, true);
  		view_menu->get_popup()->set_item_tooltip(overdraw_idx, unsupported_tooltip);
  		view_menu->get_popup()->set_item_disabled(shadeless_idx, true);
  		view_menu->get_popup()->set_item_tooltip(shadeless_idx, unsupported_tooltip);
  	}
  
  	ED_SHORTCUT("spatial_editor/freelook_left", TTR("Freelook Left"), KEY_A);
  	ED_SHORTCUT("spatial_editor/freelook_right", TTR("Freelook Right"), KEY_D);
  	ED_SHORTCUT("spatial_editor/freelook_forward", TTR("Freelook Forward"), KEY_W);
  	ED_SHORTCUT("spatial_editor/freelook_backwards", TTR("Freelook Backwards"), KEY_S);
  	ED_SHORTCUT("spatial_editor/freelook_up", TTR("Freelook Up"), KEY_E);
  	ED_SHORTCUT("spatial_editor/freelook_down", TTR("Freelook Down"), KEY_Q);
  	ED_SHORTCUT("spatial_editor/freelook_speed_modifier", TTR("Freelook Speed Modifier"), KEY_SHIFT);
  	ED_SHORTCUT("spatial_editor/freelook_slow_modifier", TTR("Freelook Slow Modifier"), KEY_ALT);
  
  	preview_camera = memnew(CheckBox);
  	preview_camera->set_text(TTR("Preview"));
  	vbox->add_child(preview_camera);
  	preview_camera->set_h_size_flags(0);
  	preview_camera->hide();
  	preview_camera->connect("toggled", callable_mp(this, &Node3DEditorViewport::_toggle_camera_preview));
  	previewing = NULL;
  	gizmo_scale = 1.0;
  
  	preview_node = NULL;
  
  	info_label = memnew(Label);
  	info_label->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_END, -90 * EDSCALE);
  	info_label->set_anchor_and_margin(MARGIN_TOP, ANCHOR_END, -90 * EDSCALE);
  	info_label->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, -10 * EDSCALE);
  	info_label->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, -10 * EDSCALE);
  	info_label->set_h_grow_direction(GROW_DIRECTION_BEGIN);
  	info_label->set_v_grow_direction(GROW_DIRECTION_BEGIN);
  	surface->add_child(info_label);
  	info_label->hide();
  
  	fps_label = memnew(Label);
  	fps_label->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_END, -90 * EDSCALE);
  	fps_label->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 10 * EDSCALE);
  	fps_label->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, -10 * EDSCALE);
  	fps_label->set_h_grow_direction(GROW_DIRECTION_BEGIN);
  	fps_label->set_tooltip(TTR("Note: The FPS value displayed is the editor's framerate.\nIt cannot be used as a reliable indication of in-game performance."));
  	fps_label->set_mouse_filter(MOUSE_FILTER_PASS); // Otherwise tooltip doesn't show.
  	surface->add_child(fps_label);
  	fps_label->hide();
  
  	cinema_label = memnew(Label);
  	cinema_label->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 10 * EDSCALE);
  	cinema_label->set_h_grow_direction(GROW_DIRECTION_END);
  	cinema_label->set_align(Label::ALIGN_CENTER);
  	surface->add_child(cinema_label);
  	cinema_label->set_text(TTR("Cinematic Preview"));
  	cinema_label->hide();
  	previewing_cinema = false;
  
  	locked_label = memnew(Label);
  	locked_label->set_anchor_and_margin(MARGIN_TOP, ANCHOR_END, -20 * EDSCALE);
  	locked_label->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, -10 * EDSCALE);
  	locked_label->set_h_grow_direction(GROW_DIRECTION_END);
  	locked_label->set_v_grow_direction(GROW_DIRECTION_BEGIN);
  	locked_label->set_align(Label::ALIGN_CENTER);
  	surface->add_child(locked_label);
  	locked_label->set_text(TTR("View Rotation Locked"));
  	locked_label->hide();
  
  	top_right_vbox = memnew(VBoxContainer);
  	top_right_vbox->set_anchors_and_margins_preset(PRESET_TOP_RIGHT, PRESET_MODE_MINSIZE, 2.0 * EDSCALE);
  	top_right_vbox->set_h_grow_direction(GROW_DIRECTION_BEGIN);
  
  	rotation_control = memnew(ViewportRotationControl);
  	rotation_control->set_custom_minimum_size(Size2(80, 80) * EDSCALE);
  	rotation_control->set_h_size_flags(SIZE_SHRINK_END);
  	rotation_control->set_viewport(this);
  	top_right_vbox->add_child(rotation_control);
  
  	fps_label = memnew(Label);
  	fps_label->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_END, -90 * EDSCALE);
  	fps_label->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 10 * EDSCALE);
  	fps_label->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, -10 * EDSCALE);
  	fps_label->set_h_grow_direction(GROW_DIRECTION_BEGIN);
  	fps_label->set_tooltip(TTR("Note: The FPS value displayed is the editor's framerate.\nIt cannot be used as a reliable indication of in-game performance."));
  	fps_label->set_mouse_filter(MOUSE_FILTER_PASS); // Otherwise tooltip doesn't show.
  	top_right_vbox->add_child(fps_label);
  	fps_label->hide();
  
  	surface->add_child(top_right_vbox);
  
  	accept = NULL;
  
  	freelook_active = false;
  	freelook_speed = EditorSettings::get_singleton()->get("editors/3d/freelook/freelook_base_speed");
  
  	selection_menu = memnew(PopupMenu);
  	add_child(selection_menu);
  	selection_menu->set_min_size(Size2(100, 0) * EDSCALE);
  	selection_menu->connect("id_pressed", callable_mp(this, &Node3DEditorViewport::_selection_result_pressed));
  	selection_menu->connect("popup_hide", callable_mp(this, &Node3DEditorViewport::_selection_menu_hide));
  
  	if (p_index == 0) {
  		view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_AUDIO_LISTENER), true);
  		viewport->set_as_audio_listener(true);
  	}
  
  	name = "";
  	_update_name();
  
  	EditorSettings::get_singleton()->connect("settings_changed", callable_mp(this, &Node3DEditorViewport::update_transform_gizmo_view));
  }
  
  //////////////////////////////////////////////////////////////
  
  void Node3DEditorViewportContainer::_gui_input(const Ref<InputEvent> &p_event) {
  
  	Ref<InputEventMouseButton> mb = p_event;
  
  	if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT) {
  
  		if (mb->is_pressed()) {
  			Vector2 size = get_size();
  
  			int h_sep = get_theme_constant("separation", "HSplitContainer");
  			int v_sep = get_theme_constant("separation", "VSplitContainer");
  
  			int mid_w = size.width * ratio_h;
  			int mid_h = size.height * ratio_v;
  
  			dragging_h = mb->get_position().x > (mid_w - h_sep / 2) && mb->get_position().x < (mid_w + h_sep / 2);
  			dragging_v = mb->get_position().y > (mid_h - v_sep / 2) && mb->get_position().y < (mid_h + v_sep / 2);
  
  			drag_begin_pos = mb->get_position();
  			drag_begin_ratio.x = ratio_h;
  			drag_begin_ratio.y = ratio_v;
  
  			switch (view) {
  				case VIEW_USE_1_VIEWPORT: {
  
  					dragging_h = false;
  					dragging_v = false;
  
  				} break;
  				case VIEW_USE_2_VIEWPORTS: {
  
  					dragging_h = false;
  
  				} break;
  				case VIEW_USE_2_VIEWPORTS_ALT: {
  
  					dragging_v = false;
  
  				} break;
  				case VIEW_USE_3_VIEWPORTS:
  				case VIEW_USE_3_VIEWPORTS_ALT:
  				case VIEW_USE_4_VIEWPORTS: {
  
  					// Do nothing.
  
  				} break;
  			}
  		} else {
  			dragging_h = false;
  			dragging_v = false;
  		}
  	}
  
  	Ref<InputEventMouseMotion> mm = p_event;
  
  	if (mm.is_valid()) {
  
  		if (view == VIEW_USE_3_VIEWPORTS || view == VIEW_USE_3_VIEWPORTS_ALT || view == VIEW_USE_4_VIEWPORTS) {
  			Vector2 size = get_size();
  
  			int h_sep = get_theme_constant("separation", "HSplitContainer");
  			int v_sep = get_theme_constant("separation", "VSplitContainer");
  
  			int mid_w = size.width * ratio_h;
  			int mid_h = size.height * ratio_v;
  
  			bool was_hovering_h = hovering_h;
  			bool was_hovering_v = hovering_v;
  			hovering_h = mm->get_position().x > (mid_w - h_sep / 2) && mm->get_position().x < (mid_w + h_sep / 2);
  			hovering_v = mm->get_position().y > (mid_h - v_sep / 2) && mm->get_position().y < (mid_h + v_sep / 2);
  
  			if (was_hovering_h != hovering_h || was_hovering_v != hovering_v) {
  				update();
  			}
  		}
  
  		if (dragging_h) {
  			float new_ratio = drag_begin_ratio.x + (mm->get_position().x - drag_begin_pos.x) / get_size().width;
  			new_ratio = CLAMP(new_ratio, 40 / get_size().width, (get_size().width - 40) / get_size().width);
  			ratio_h = new_ratio;
  			queue_sort();
  			update();
  		}
  		if (dragging_v) {
  			float new_ratio = drag_begin_ratio.y + (mm->get_position().y - drag_begin_pos.y) / get_size().height;
  			new_ratio = CLAMP(new_ratio, 40 / get_size().height, (get_size().height - 40) / get_size().height);
  			ratio_v = new_ratio;
  			queue_sort();
  			update();
  		}
  	}
  }
  
  void Node3DEditorViewportContainer::_notification(int p_what) {
  
  	if (p_what == NOTIFICATION_MOUSE_ENTER || p_what == NOTIFICATION_MOUSE_EXIT) {
  
  		mouseover = (p_what == NOTIFICATION_MOUSE_ENTER);
  		update();
  	}
  
  	if (p_what == NOTIFICATION_DRAW && mouseover) {
  
  		Ref<Texture2D> h_grabber = get_theme_icon("grabber", "HSplitContainer");
  		Ref<Texture2D> v_grabber = get_theme_icon("grabber", "VSplitContainer");
  
  		Ref<Texture2D> hdiag_grabber = get_theme_icon("GuiViewportHdiagsplitter", "EditorIcons");
  		Ref<Texture2D> vdiag_grabber = get_theme_icon("GuiViewportVdiagsplitter", "EditorIcons");
  		Ref<Texture2D> vh_grabber = get_theme_icon("GuiViewportVhsplitter", "EditorIcons");
  
  		Vector2 size = get_size();
  
  		int h_sep = get_theme_constant("separation", "HSplitContainer");
  
  		int v_sep = get_theme_constant("separation", "VSplitContainer");
  
  		int mid_w = size.width * ratio_h;
  		int mid_h = size.height * ratio_v;
  
  		int size_left = mid_w - h_sep / 2;
  		int size_bottom = size.height - mid_h - v_sep / 2;
  
  		switch (view) {
  
  			case VIEW_USE_1_VIEWPORT: {
  
  				// Nothing to show.
  
  			} break;
  			case VIEW_USE_2_VIEWPORTS: {
  
  				draw_texture(v_grabber, Vector2((size.width - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
  				set_default_cursor_shape(CURSOR_VSPLIT);
  
  			} break;
  			case VIEW_USE_2_VIEWPORTS_ALT: {
  
  				draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, (size.height - h_grabber->get_height()) / 2));
  				set_default_cursor_shape(CURSOR_HSPLIT);
  
  			} break;
  			case VIEW_USE_3_VIEWPORTS: {
  
  				if ((hovering_v && hovering_h && !dragging_v && !dragging_h) || (dragging_v && dragging_h)) {
  					draw_texture(hdiag_grabber, Vector2(mid_w - hdiag_grabber->get_width() / 2, mid_h - v_grabber->get_height() / 4));
  					set_default_cursor_shape(CURSOR_DRAG);
  				} else if ((hovering_v && !dragging_h) || dragging_v) {
  					draw_texture(v_grabber, Vector2((size.width - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
  					set_default_cursor_shape(CURSOR_VSPLIT);
  				} else if (hovering_h || dragging_h) {
  					draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, mid_h + v_grabber->get_height() / 2 + (size_bottom - h_grabber->get_height()) / 2));
  					set_default_cursor_shape(CURSOR_HSPLIT);
  				}
  
  			} break;
  			case VIEW_USE_3_VIEWPORTS_ALT: {
  
  				if ((hovering_v && hovering_h && !dragging_v && !dragging_h) || (dragging_v && dragging_h)) {
  					draw_texture(vdiag_grabber, Vector2(mid_w - vdiag_grabber->get_width() + v_grabber->get_height() / 4, mid_h - vdiag_grabber->get_height() / 2));
  					set_default_cursor_shape(CURSOR_DRAG);
  				} else if ((hovering_v && !dragging_h) || dragging_v) {
  					draw_texture(v_grabber, Vector2((size_left - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
  					set_default_cursor_shape(CURSOR_VSPLIT);
  				} else if (hovering_h || dragging_h) {
  					draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, (size.height - h_grabber->get_height()) / 2));
  					set_default_cursor_shape(CURSOR_HSPLIT);
  				}
  
  			} break;
  			case VIEW_USE_4_VIEWPORTS: {
  
  				Vector2 half(mid_w, mid_h);
  				if ((hovering_v && hovering_h && !dragging_v && !dragging_h) || (dragging_v && dragging_h)) {
  					draw_texture(vh_grabber, half - vh_grabber->get_size() / 2.0);
  					set_default_cursor_shape(CURSOR_DRAG);
  				} else if ((hovering_v && !dragging_h) || dragging_v) {
  					draw_texture(v_grabber, half - v_grabber->get_size() / 2.0);
  					set_default_cursor_shape(CURSOR_VSPLIT);
  				} else if (hovering_h || dragging_h) {
  					draw_texture(h_grabber, half - h_grabber->get_size() / 2.0);
  					set_default_cursor_shape(CURSOR_HSPLIT);
  				}
  
  			} break;
  		}
  	}
  
  	if (p_what == NOTIFICATION_SORT_CHILDREN) {
  
  		Node3DEditorViewport *viewports[4];
  		int vc = 0;
  		for (int i = 0; i < get_child_count(); i++) {
  			viewports[vc] = Object::cast_to<Node3DEditorViewport>(get_child(i));
  			if (viewports[vc]) {
  				vc++;
  			}
  		}
  
  		ERR_FAIL_COND(vc != 4);
  
  		Size2 size = get_size();
  
  		if (size.x < 10 || size.y < 10) {
  			for (int i = 0; i < 4; i++) {
  				viewports[i]->hide();
  			}
  			return;
  		}
  		int h_sep = get_theme_constant("separation", "HSplitContainer");
  
  		int v_sep = get_theme_constant("separation", "VSplitContainer");
  
  		int mid_w = size.width * ratio_h;
  		int mid_h = size.height * ratio_v;
  
  		int size_left = mid_w - h_sep / 2;
  		int size_right = size.width - mid_w - h_sep / 2;
  
  		int size_top = mid_h - v_sep / 2;
  		int size_bottom = size.height - mid_h - v_sep / 2;
  
  		switch (view) {
  
  			case VIEW_USE_1_VIEWPORT: {
  
  				viewports[0]->show();
  				for (int i = 1; i < 4; i++) {
  
  					viewports[i]->hide();
  				}
  
  				fit_child_in_rect(viewports[0], Rect2(Vector2(), size));
  
  			} break;
  			case VIEW_USE_2_VIEWPORTS: {
  
  				for (int i = 0; i < 4; i++) {
  
  					if (i == 1 || i == 3)
  						viewports[i]->hide();
  					else
  						viewports[i]->show();
  				}
  
  				fit_child_in_rect(viewports[0], Rect2(Vector2(), Vector2(size.width, size_top)));
  				fit_child_in_rect(viewports[2], Rect2(Vector2(0, mid_h + v_sep / 2), Vector2(size.width, size_bottom)));
  
  			} break;
  			case VIEW_USE_2_VIEWPORTS_ALT: {
  
  				for (int i = 0; i < 4; i++) {
  
  					if (i == 1 || i == 3)
  						viewports[i]->hide();
  					else
  						viewports[i]->show();
  				}
  				fit_child_in_rect(viewports[0], Rect2(Vector2(), Vector2(size_left, size.height)));
  				fit_child_in_rect(viewports[2], Rect2(Vector2(mid_w + h_sep / 2, 0), Vector2(size_right, size.height)));
  
  			} break;
  			case VIEW_USE_3_VIEWPORTS: {
  
  				for (int i = 0; i < 4; i++) {
  
  					if (i == 1)
  						viewports[i]->hide();
  					else
  						viewports[i]->show();
  				}
  
  				fit_child_in_rect(viewports[0], Rect2(Vector2(), Vector2(size.width, size_top)));
  				fit_child_in_rect(viewports[2], Rect2(Vector2(0, mid_h + v_sep / 2), Vector2(size_left, size_bottom)));
  				fit_child_in_rect(viewports[3], Rect2(Vector2(mid_w + h_sep / 2, mid_h + v_sep / 2), Vector2(size_right, size_bottom)));
  
  			} break;
  			case VIEW_USE_3_VIEWPORTS_ALT: {
  
  				for (int i = 0; i < 4; i++) {
  
  					if (i == 1)
  						viewports[i]->hide();
  					else
  						viewports[i]->show();
  				}
  
  				fit_child_in_rect(viewports[0], Rect2(Vector2(), Vector2(size_left, size_top)));
  				fit_child_in_rect(viewports[2], Rect2(Vector2(0, mid_h + v_sep / 2), Vector2(size_left, size_bottom)));
  				fit_child_in_rect(viewports[3], Rect2(Vector2(mid_w + h_sep / 2, 0), Vector2(size_right, size.height)));
  
  			} break;
  			case VIEW_USE_4_VIEWPORTS: {
  
  				for (int i = 0; i < 4; i++) {
  
  					viewports[i]->show();
  				}
  
  				fit_child_in_rect(viewports[0], Rect2(Vector2(), Vector2(size_left, size_top)));
  				fit_child_in_rect(viewports[1], Rect2(Vector2(mid_w + h_sep / 2, 0), Vector2(size_right, size_top)));
  				fit_child_in_rect(viewports[2], Rect2(Vector2(0, mid_h + v_sep / 2), Vector2(size_left, size_bottom)));
  				fit_child_in_rect(viewports[3], Rect2(Vector2(mid_w + h_sep / 2, mid_h + v_sep / 2), Vector2(size_right, size_bottom)));
  
  			} break;
  		}
  	}
  }
  
  void Node3DEditorViewportContainer::set_view(View p_view) {
  
  	view = p_view;
  	queue_sort();
  }
  
  Node3DEditorViewportContainer::View Node3DEditorViewportContainer::get_view() {
  
  	return view;
  }
  
  void Node3DEditorViewportContainer::_bind_methods() {
  
  	ClassDB::bind_method("_gui_input", &Node3DEditorViewportContainer::_gui_input);
  }
  
  Node3DEditorViewportContainer::Node3DEditorViewportContainer() {
  
  	set_clip_contents(true);
  	view = VIEW_USE_1_VIEWPORT;
  	mouseover = false;
  	ratio_h = 0.5;
  	ratio_v = 0.5;
  	hovering_v = false;
  	hovering_h = false;
  	dragging_v = false;
  	dragging_h = false;
  }
  
  ///////////////////////////////////////////////////////////////////
  
  Node3DEditor *Node3DEditor::singleton = NULL;
  
  Node3DEditorSelectedItem::~Node3DEditorSelectedItem() {
  
  	if (sbox_instance.is_valid())
  		RenderingServer::get_singleton()->free(sbox_instance);
  }
  
  void Node3DEditor::select_gizmo_highlight_axis(int p_axis) {
  
  	for (int i = 0; i < 3; i++) {
  
  		move_gizmo[i]->surface_set_material(0, i == p_axis ? gizmo_color_hl[i] : gizmo_color[i]);
  		move_plane_gizmo[i]->surface_set_material(0, (i + 6) == p_axis ? plane_gizmo_color_hl[i] : plane_gizmo_color[i]);
  		rotate_gizmo[i]->surface_set_material(0, (i + 3) == p_axis ? gizmo_color_hl[i] : gizmo_color[i]);
  		scale_gizmo[i]->surface_set_material(0, (i + 9) == p_axis ? gizmo_color_hl[i] : gizmo_color[i]);
  		scale_plane_gizmo[i]->surface_set_material(0, (i + 12) == p_axis ? plane_gizmo_color_hl[i] : plane_gizmo_color[i]);
  	}
  }
  
  void Node3DEditor::update_transform_gizmo() {
  
  	List<Node *> &selection = editor_selection->get_selected_node_list();
  	AABB center;
  	bool first = true;
  
  	Basis gizmo_basis;
  	bool local_gizmo_coords = are_local_coords_enabled();
  
  	for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  		Node3D *sp = Object::cast_to<Node3D>(E->get());
  		if (!sp)
  			continue;
  
  		Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  		if (!se)
  			continue;
  
  		Transform xf = se->sp->get_global_gizmo_transform();
  
  		if (first) {
  			center.position = xf.origin;
  			first = false;
  			if (local_gizmo_coords) {
  				gizmo_basis = xf.basis;
  				gizmo_basis.orthonormalize();
  			}
  		} else {
  			center.expand_to(xf.origin);
  			gizmo_basis = Basis();
  		}
  	}
  
  	Vector3 pcenter = center.position + center.size * 0.5;
  	gizmo.visible = !first;
  	gizmo.transform.origin = pcenter;
  	gizmo.transform.basis = gizmo_basis;
  
  	for (uint32_t i = 0; i < VIEWPORTS_COUNT; i++) {
  		viewports[i]->update_transform_gizmo_view();
  	}
  }
  
  void _update_all_gizmos(Node *p_node) {
  	for (int i = p_node->get_child_count() - 1; 0 <= i; --i) {
  		Node3D *spatial_node = Object::cast_to<Node3D>(p_node->get_child(i));
  		if (spatial_node) {
  			spatial_node->update_gizmo();
  		}
  
  		_update_all_gizmos(p_node->get_child(i));
  	}
  }
  
  void Node3DEditor::update_all_gizmos(Node *p_node) {
  	if (!p_node) {
  		p_node = SceneTree::get_singleton()->get_root();
  	}
  	_update_all_gizmos(p_node);
  }
  
  Object *Node3DEditor::_get_editor_data(Object *p_what) {
  
  	Node3D *sp = Object::cast_to<Node3D>(p_what);
  	if (!sp)
  		return NULL;
  
  	Node3DEditorSelectedItem *si = memnew(Node3DEditorSelectedItem);
  
  	si->sp = sp;
  	si->sbox_instance = RenderingServer::get_singleton()->instance_create2(selection_box->get_rid(), sp->get_world()->get_scenario());
  	RS::get_singleton()->instance_geometry_set_cast_shadows_setting(si->sbox_instance, RS::SHADOW_CASTING_SETTING_OFF);
  
  	return si;
  }
  
  void Node3DEditor::_generate_selection_box() {
  
  	AABB aabb(Vector3(), Vector3(1, 1, 1));
  	aabb.grow_by(aabb.get_longest_axis_size() / 20.0);
  
  	Ref<SurfaceTool> st = memnew(SurfaceTool);
  
  	st->begin(Mesh::PRIMITIVE_LINES);
  	for (int i = 0; i < 12; i++) {
  
  		Vector3 a, b;
  		aabb.get_edge(i, a, b);
  
  		st->add_color(Color(1.0, 1.0, 0.8, 0.8));
  		st->add_vertex(a);
  		st->add_color(Color(1.0, 1.0, 0.8, 0.4));
  		st->add_vertex(a.linear_interpolate(b, 0.2));
  
  		st->add_color(Color(1.0, 1.0, 0.8, 0.4));
  		st->add_vertex(a.linear_interpolate(b, 0.8));
  		st->add_color(Color(1.0, 1.0, 0.8, 0.8));
  		st->add_vertex(b);
  	}
  
  	Ref<StandardMaterial3D> mat = memnew(StandardMaterial3D);
  	mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  	mat->set_albedo(Color(1, 1, 1));
  	mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
  	mat->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
  	mat->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
  	st->set_material(mat);
  	selection_box = st->commit();
  }
  
  Dictionary Node3DEditor::get_state() const {
  
  	Dictionary d;
  
  	d["snap_enabled"] = snap_enabled;
  	d["translate_snap"] = get_translate_snap();
  	d["rotate_snap"] = get_rotate_snap();
  	d["scale_snap"] = get_scale_snap();
  
  	d["local_coords"] = tool_option_button[TOOL_OPT_LOCAL_COORDS]->is_pressed();
  
  	int vc = 0;
  	if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT)))
  		vc = 1;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS)))
  		vc = 2;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS)))
  		vc = 3;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS)))
  		vc = 4;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT)))
  		vc = 5;
  	else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT)))
  		vc = 6;
  
  	d["viewport_mode"] = vc;
  	Array vpdata;
  	for (int i = 0; i < 4; i++) {
  		vpdata.push_back(viewports[i]->get_state());
  	}
  
  	d["viewports"] = vpdata;
  
  	d["show_grid"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_GRID));
  	d["show_origin"] = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_ORIGIN));
  	d["fov"] = get_fov();
  	d["znear"] = get_znear();
  	d["zfar"] = get_zfar();
  
  	Dictionary gizmos_status;
  	for (int i = 0; i < gizmo_plugins_by_name.size(); i++) {
  		if (!gizmo_plugins_by_name[i]->can_be_hidden()) continue;
  		int state = gizmos_menu->get_item_state(gizmos_menu->get_item_index(i));
  		String name = gizmo_plugins_by_name[i]->get_name();
  		gizmos_status[name] = state;
  	}
  
  	d["gizmos_status"] = gizmos_status;
  
  	return d;
  }
  void Node3DEditor::set_state(const Dictionary &p_state) {
  
  	Dictionary d = p_state;
  
  	if (d.has("snap_enabled")) {
  		snap_enabled = d["snap_enabled"];
  		tool_option_button[TOOL_OPT_USE_SNAP]->set_pressed(d["snap_enabled"]);
  	}
  
  	if (d.has("translate_snap"))
  		snap_translate_value = d["translate_snap"];
  
  	if (d.has("rotate_snap"))
  		snap_rotate_value = d["rotate_snap"];
  
  	if (d.has("scale_snap"))
  		snap_scale_value = d["scale_snap"];
  
  	_snap_update();
  
  	if (d.has("local_coords")) {
  		tool_option_button[TOOL_OPT_LOCAL_COORDS]->set_pressed(d["local_coords"]);
  		update_transform_gizmo();
  	}
  
  	if (d.has("viewport_mode")) {
  		int vc = d["viewport_mode"];
  
  		if (vc == 1)
  			_menu_item_pressed(MENU_VIEW_USE_1_VIEWPORT);
  		else if (vc == 2)
  			_menu_item_pressed(MENU_VIEW_USE_2_VIEWPORTS);
  		else if (vc == 3)
  			_menu_item_pressed(MENU_VIEW_USE_3_VIEWPORTS);
  		else if (vc == 4)
  			_menu_item_pressed(MENU_VIEW_USE_4_VIEWPORTS);
  		else if (vc == 5)
  			_menu_item_pressed(MENU_VIEW_USE_2_VIEWPORTS_ALT);
  		else if (vc == 6)
  			_menu_item_pressed(MENU_VIEW_USE_3_VIEWPORTS_ALT);
  	}
  
  	if (d.has("viewports")) {
  		Array vp = d["viewports"];
  		uint32_t vp_size = static_cast<uint32_t>(vp.size());
  		if (vp_size > VIEWPORTS_COUNT) {
  			WARN_PRINT("Ignoring superfluous viewport settings from spatial editor state.");
  			vp_size = VIEWPORTS_COUNT;
  		}
  
  		for (uint32_t i = 0; i < vp_size; i++) {
  			viewports[i]->set_state(vp[i]);
  		}
  	}
  
  	if (d.has("zfar"))
  		settings_zfar->set_value(float(d["zfar"]));
  	if (d.has("znear"))
  		settings_znear->set_value(float(d["znear"]));
  	if (d.has("fov"))
  		settings_fov->set_value(float(d["fov"]));
  	if (d.has("show_grid")) {
  		bool use = d["show_grid"];
  
  		if (use != view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_GRID))) {
  			_menu_item_pressed(MENU_VIEW_GRID);
  		}
  	}
  
  	if (d.has("show_origin")) {
  		bool use = d["show_origin"];
  
  		if (use != view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_ORIGIN))) {
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_ORIGIN), use);
  			RenderingServer::get_singleton()->instance_set_visible(origin_instance, use);
  		}
  	}
  
  	if (d.has("gizmos_status")) {
  		Dictionary gizmos_status = d["gizmos_status"];
  		List<Variant> keys;
  		gizmos_status.get_key_list(&keys);
  
  		for (int j = 0; j < gizmo_plugins_by_name.size(); ++j) {
  			if (!gizmo_plugins_by_name[j]->can_be_hidden()) continue;
  			int state = EditorNode3DGizmoPlugin::VISIBLE;
  			for (int i = 0; i < keys.size(); i++) {
  				if (gizmo_plugins_by_name.write[j]->get_name() == keys[i]) {
  					state = gizmos_status[keys[i]];
  					break;
  				}
  			}
  
  			gizmo_plugins_by_name.write[j]->set_state(state);
  		}
  		_update_gizmos_menu();
  	}
  }
  
  void Node3DEditor::edit(Node3D *p_spatial) {
  
  	if (p_spatial != selected) {
  		if (selected) {
  
  			Ref<EditorNode3DGizmo> seg = selected->get_gizmo();
  			if (seg.is_valid()) {
  				seg->set_selected(false);
  				selected->update_gizmo();
  			}
  		}
  
  		selected = p_spatial;
  		over_gizmo_handle = -1;
  
  		if (selected) {
  
  			Ref<EditorNode3DGizmo> seg = selected->get_gizmo();
  			if (seg.is_valid()) {
  				seg->set_selected(true);
  				selected->update_gizmo();
  			}
  		}
  	}
  }
  
  void Node3DEditor::_snap_changed() {
  
  	snap_translate_value = snap_translate->get_text().to_double();
  	snap_rotate_value = snap_rotate->get_text().to_double();
  	snap_scale_value = snap_scale->get_text().to_double();
  }
  
  void Node3DEditor::_snap_update() {
  
  	snap_translate->set_text(String::num(snap_translate_value));
  	snap_rotate->set_text(String::num(snap_rotate_value));
  	snap_scale->set_text(String::num(snap_scale_value));
  }
  
  void Node3DEditor::_xform_dialog_action() {
  
  	Transform t;
  	//translation
  	Vector3 scale;
  	Vector3 rotate;
  	Vector3 translate;
  
  	for (int i = 0; i < 3; i++) {
  		translate[i] = xform_translate[i]->get_text().to_double();
  		rotate[i] = Math::deg2rad(xform_rotate[i]->get_text().to_double());
  		scale[i] = xform_scale[i]->get_text().to_double();
  	}
  
  	t.basis.scale(scale);
  	t.basis.rotate(rotate);
  	t.origin = translate;
  
  	undo_redo->create_action(TTR("XForm Dialog"));
  
  	List<Node *> &selection = editor_selection->get_selected_node_list();
  
  	for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  		Node3D *sp = Object::cast_to<Node3D>(E->get());
  		if (!sp)
  			continue;
  
  		Node3DEditorSelectedItem *se = editor_selection->get_node_editor_data<Node3DEditorSelectedItem>(sp);
  		if (!se)
  			continue;
  
  		bool post = xform_type->get_selected() > 0;
  
  		Transform tr = sp->get_global_gizmo_transform();
  		if (post)
  			tr = tr * t;
  		else {
  
  			tr.basis = t.basis * tr.basis;
  			tr.origin += t.origin;
  		}
  
  		undo_redo->add_do_method(sp, "set_global_transform", tr);
  		undo_redo->add_undo_method(sp, "set_global_transform", sp->get_global_gizmo_transform());
  	}
  	undo_redo->commit_action();
  }
  
  void Node3DEditor::_menu_item_toggled(bool pressed, int p_option) {
  
  	switch (p_option) {
  		case MENU_TOOL_LOCAL_COORDS: {
  
  			tool_option_button[TOOL_OPT_LOCAL_COORDS]->set_pressed(pressed);
  			update_transform_gizmo();
  		} break;
  
  		case MENU_TOOL_USE_SNAP: {
  			tool_option_button[TOOL_OPT_USE_SNAP]->set_pressed(pressed);
  			snap_enabled = pressed;
  		} break;
  
  		case MENU_TOOL_OVERRIDE_CAMERA: {
  			EditorDebuggerNode *const debugger = EditorDebuggerNode::get_singleton();
  
  			using Override = EditorDebuggerNode::CameraOverride;
  			if (pressed) {
  
  				debugger->set_camera_override((Override)(Override::OVERRIDE_3D_1 + camera_override_viewport_id));
  			} else {
  				debugger->set_camera_override(Override::OVERRIDE_NONE);
  			}
  
  		} break;
  	}
  }
  
  void Node3DEditor::_menu_gizmo_toggled(int p_option) {
  
  	const int idx = gizmos_menu->get_item_index(p_option);
  	gizmos_menu->toggle_item_multistate(idx);
  
  	// Change icon
  	const int state = gizmos_menu->get_item_state(idx);
  	switch (state) {
  		case EditorNode3DGizmoPlugin::VISIBLE:
  			gizmos_menu->set_item_icon(idx, view_menu->get_popup()->get_theme_icon("visibility_visible"));
  			break;
  		case EditorNode3DGizmoPlugin::ON_TOP:
  			gizmos_menu->set_item_icon(idx, view_menu->get_popup()->get_theme_icon("visibility_xray"));
  			break;
  		case EditorNode3DGizmoPlugin::HIDDEN:
  			gizmos_menu->set_item_icon(idx, view_menu->get_popup()->get_theme_icon("visibility_hidden"));
  			break;
  	}
  
  	gizmo_plugins_by_name.write[p_option]->set_state(state);
  
  	update_all_gizmos();
  }
  
  void Node3DEditor::_update_camera_override_button(bool p_game_running) {
  	Button *const button = tool_option_button[TOOL_OPT_OVERRIDE_CAMERA];
  
  	if (p_game_running) {
  		button->set_disabled(false);
  		button->set_tooltip(TTR("Game Camera Override\nNo game instance running."));
  	} else {
  		button->set_disabled(true);
  		button->set_pressed(false);
  		button->set_tooltip(TTR("Game Camera Override\nOverrides game camera with editor viewport camera."));
  	}
  }
  
  void Node3DEditor::_update_camera_override_viewport(Object *p_viewport) {
  	Node3DEditorViewport *current_viewport = Object::cast_to<Node3DEditorViewport>(p_viewport);
  
  	if (!current_viewport)
  		return;
  
  	EditorDebuggerNode *const debugger = EditorDebuggerNode::get_singleton();
  
  	camera_override_viewport_id = current_viewport->index;
  	if (debugger->get_camera_override() >= EditorDebuggerNode::OVERRIDE_3D_1) {
  		using Override = EditorDebuggerNode::CameraOverride;
  
  		debugger->set_camera_override((Override)(Override::OVERRIDE_3D_1 + camera_override_viewport_id));
  	}
  }
  
  void Node3DEditor::_menu_item_pressed(int p_option) {
  
  	switch (p_option) {
  
  		case MENU_TOOL_SELECT:
  		case MENU_TOOL_MOVE:
  		case MENU_TOOL_ROTATE:
  		case MENU_TOOL_SCALE:
  		case MENU_TOOL_LIST_SELECT: {
  
  			for (int i = 0; i < TOOL_MAX; i++)
  				tool_button[i]->set_pressed(i == p_option);
  			tool_mode = (ToolMode)p_option;
  			update_transform_gizmo();
  
  		} break;
  		case MENU_TRANSFORM_CONFIGURE_SNAP: {
  
  			snap_dialog->popup_centered(Size2(200, 180));
  		} break;
  		case MENU_TRANSFORM_DIALOG: {
  
  			for (int i = 0; i < 3; i++) {
  
  				xform_translate[i]->set_text("0");
  				xform_rotate[i]->set_text("0");
  				xform_scale[i]->set_text("1");
  			}
  
  			xform_dialog->popup_centered(Size2(320, 240) * EDSCALE);
  
  		} break;
  		case MENU_VIEW_USE_1_VIEWPORT: {
  
  			viewport_base->set_view(Node3DEditorViewportContainer::VIEW_USE_1_VIEWPORT);
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), true);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), false);
  
  		} break;
  		case MENU_VIEW_USE_2_VIEWPORTS: {
  
  			viewport_base->set_view(Node3DEditorViewportContainer::VIEW_USE_2_VIEWPORTS);
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), true);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), false);
  
  		} break;
  		case MENU_VIEW_USE_2_VIEWPORTS_ALT: {
  
  			viewport_base->set_view(Node3DEditorViewportContainer::VIEW_USE_2_VIEWPORTS_ALT);
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), true);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), false);
  
  		} break;
  		case MENU_VIEW_USE_3_VIEWPORTS: {
  
  			viewport_base->set_view(Node3DEditorViewportContainer::VIEW_USE_3_VIEWPORTS);
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), true);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), false);
  
  		} break;
  		case MENU_VIEW_USE_3_VIEWPORTS_ALT: {
  
  			viewport_base->set_view(Node3DEditorViewportContainer::VIEW_USE_3_VIEWPORTS_ALT);
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), true);
  
  		} break;
  		case MENU_VIEW_USE_4_VIEWPORTS: {
  
  			viewport_base->set_view(Node3DEditorViewportContainer::VIEW_USE_4_VIEWPORTS);
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), true);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), false);
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), false);
  
  		} break;
  		case MENU_VIEW_ORIGIN: {
  
  			bool is_checked = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(p_option));
  
  			origin_enabled = !is_checked;
  			RenderingServer::get_singleton()->instance_set_visible(origin_instance, origin_enabled);
  			// Update the grid since its appearance depends on whether the origin is enabled
  			_finish_grid();
  			_init_grid();
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(p_option), origin_enabled);
  		} break;
  		case MENU_VIEW_GRID: {
  
  			bool is_checked = view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(p_option));
  
  			grid_enabled = !is_checked;
  
  			for (int i = 0; i < 3; ++i) {
  				if (grid_enable[i]) {
  					RenderingServer::get_singleton()->instance_set_visible(grid_instance[i], grid_enabled);
  					grid_visible[i] = grid_enabled;
  				}
  			}
  
  			view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(p_option), grid_enabled);
  
  		} break;
  		case MENU_VIEW_CAMERA_SETTINGS: {
  
  			settings_dialog->popup_centered(settings_vbc->get_combined_minimum_size() + Size2(50, 50));
  		} break;
  		case MENU_SNAP_TO_FLOOR: {
  			snap_selected_nodes_to_floor();
  		} break;
  		case MENU_LOCK_SELECTED: {
  			undo_redo->create_action(TTR("Lock Selected"));
  
  			List<Node *> &selection = editor_selection->get_selected_node_list();
  
  			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  				Node3D *spatial = Object::cast_to<Node3D>(E->get());
  				if (!spatial || !spatial->is_visible_in_tree())
  					continue;
  
  				if (spatial->get_viewport() != EditorNode::get_singleton()->get_scene_root())
  					continue;
  
  				undo_redo->add_do_method(spatial, "set_meta", "_edit_lock_", true);
  				undo_redo->add_undo_method(spatial, "remove_meta", "_edit_lock_");
  				undo_redo->add_do_method(this, "emit_signal", "item_lock_status_changed");
  				undo_redo->add_undo_method(this, "emit_signal", "item_lock_status_changed");
  			}
  
  			undo_redo->add_do_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->add_undo_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->commit_action();
  		} break;
  		case MENU_UNLOCK_SELECTED: {
  			undo_redo->create_action(TTR("Unlock Selected"));
  
  			List<Node *> &selection = editor_selection->get_selected_node_list();
  
  			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  				Node3D *spatial = Object::cast_to<Node3D>(E->get());
  				if (!spatial || !spatial->is_visible_in_tree())
  					continue;
  
  				if (spatial->get_viewport() != EditorNode::get_singleton()->get_scene_root())
  					continue;
  
  				undo_redo->add_do_method(spatial, "remove_meta", "_edit_lock_");
  				undo_redo->add_undo_method(spatial, "set_meta", "_edit_lock_", true);
  				undo_redo->add_do_method(this, "emit_signal", "item_lock_status_changed");
  				undo_redo->add_undo_method(this, "emit_signal", "item_lock_status_changed");
  			}
  
  			undo_redo->add_do_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->add_undo_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->commit_action();
  		} break;
  		case MENU_GROUP_SELECTED: {
  			undo_redo->create_action(TTR("Group Selected"));
  
  			List<Node *> &selection = editor_selection->get_selected_node_list();
  
  			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  				Node3D *spatial = Object::cast_to<Node3D>(E->get());
  				if (!spatial || !spatial->is_visible_in_tree())
  					continue;
  
  				if (spatial->get_viewport() != EditorNode::get_singleton()->get_scene_root())
  					continue;
  
  				undo_redo->add_do_method(spatial, "set_meta", "_edit_group_", true);
  				undo_redo->add_undo_method(spatial, "remove_meta", "_edit_group_");
  				undo_redo->add_do_method(this, "emit_signal", "item_group_status_changed");
  				undo_redo->add_undo_method(this, "emit_signal", "item_group_status_changed");
  			}
  
  			undo_redo->add_do_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->add_undo_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->commit_action();
  		} break;
  		case MENU_UNGROUP_SELECTED: {
  			undo_redo->create_action(TTR("Ungroup Selected"));
  			List<Node *> &selection = editor_selection->get_selected_node_list();
  
  			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  
  				Node3D *spatial = Object::cast_to<Node3D>(E->get());
  				if (!spatial || !spatial->is_visible_in_tree())
  					continue;
  
  				if (spatial->get_viewport() != EditorNode::get_singleton()->get_scene_root())
  					continue;
  
  				undo_redo->add_do_method(spatial, "remove_meta", "_edit_group_");
  				undo_redo->add_undo_method(spatial, "set_meta", "_edit_group_", true);
  				undo_redo->add_do_method(this, "emit_signal", "item_group_status_changed");
  				undo_redo->add_undo_method(this, "emit_signal", "item_group_status_changed");
  			}
  
  			undo_redo->add_do_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->add_undo_method(this, "_refresh_menu_icons", Variant());
  			undo_redo->commit_action();
  		} break;
  	}
  }
  
  void Node3DEditor::_init_indicators() {
  
  	{
  		origin_enabled = true;
  		grid_enabled = true;
  
  		indicator_mat.instance();
  		indicator_mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  		indicator_mat->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
  		indicator_mat->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
  
  		Vector<Color> origin_colors;
  		Vector<Vector3> origin_points;
  
  		for (int i = 0; i < 3; i++) {
  			Vector3 axis;
  			axis[i] = 1;
  			Color origin_color;
  			switch (i) {
  				case 0:
  					origin_color = get_theme_color("axis_x_color", "Editor");
  					break;
  				case 1:
  					origin_color = get_theme_color("axis_y_color", "Editor");
  					break;
  				case 2:
  					origin_color = get_theme_color("axis_z_color", "Editor");
  					break;
  				default:
  					origin_color = Color();
  					break;
  			}
  
  			grid_enable[i] = false;
  			grid_visible[i] = false;
  
  			origin_colors.push_back(origin_color);
  			origin_colors.push_back(origin_color);
  			origin_points.push_back(axis * 4096);
  			origin_points.push_back(axis * -4096);
  		}
  
  		grid_enable[1] = true;
  		grid_visible[1] = true;
  
  		_init_grid();
  
  		origin = RenderingServer::get_singleton()->mesh_create();
  		Array d;
  		d.resize(RS::ARRAY_MAX);
  		d[RenderingServer::ARRAY_VERTEX] = origin_points;
  		d[RenderingServer::ARRAY_COLOR] = origin_colors;
  
  		RenderingServer::get_singleton()->mesh_add_surface_from_arrays(origin, RenderingServer::PRIMITIVE_LINES, d);
  		RenderingServer::get_singleton()->mesh_surface_set_material(origin, 0, indicator_mat->get_rid());
  
  		origin_instance = RenderingServer::get_singleton()->instance_create2(origin, get_tree()->get_root()->get_world()->get_scenario());
  		RS::get_singleton()->instance_set_layer_mask(origin_instance, 1 << Node3DEditorViewport::GIZMO_GRID_LAYER);
  
  		RenderingServer::get_singleton()->instance_geometry_set_cast_shadows_setting(origin_instance, RS::SHADOW_CASTING_SETTING_OFF);
  	}
  
  	{
  
  		//move gizmo
  
  		for (int i = 0; i < 3; i++) {
  
  			Color col;
  			switch (i) {
  				case 0:
  					col = get_theme_color("axis_x_color", "Editor");
  					break;
  				case 1:
  					col = get_theme_color("axis_y_color", "Editor");
  					break;
  				case 2:
  					col = get_theme_color("axis_z_color", "Editor");
  					break;
  				default:
  					col = Color();
  					break;
  			}
  
  			col.a = EditorSettings::get_singleton()->get("editors/3d/manipulator_gizmo_opacity");
  
  			move_gizmo[i] = Ref<ArrayMesh>(memnew(ArrayMesh));
  			move_plane_gizmo[i] = Ref<ArrayMesh>(memnew(ArrayMesh));
  			rotate_gizmo[i] = Ref<ArrayMesh>(memnew(ArrayMesh));
  			scale_gizmo[i] = Ref<ArrayMesh>(memnew(ArrayMesh));
  			scale_plane_gizmo[i] = Ref<ArrayMesh>(memnew(ArrayMesh));
  
  			Ref<StandardMaterial3D> mat = memnew(StandardMaterial3D);
  			mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  			mat->set_on_top_of_alpha();
  			mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
  			mat->set_albedo(col);
  			gizmo_color[i] = mat;
  
  			Ref<StandardMaterial3D> mat_hl = mat->duplicate();
  			mat_hl->set_albedo(Color(col.r, col.g, col.b, 1.0));
  			gizmo_color_hl[i] = mat_hl;
  
  			Vector3 ivec;
  			ivec[i] = 1;
  			Vector3 nivec;
  			nivec[(i + 1) % 3] = 1;
  			nivec[(i + 2) % 3] = 1;
  			Vector3 ivec2;
  			ivec2[(i + 1) % 3] = 1;
  			Vector3 ivec3;
  			ivec3[(i + 2) % 3] = 1;
  
  			//translate
  			{
  
  				Ref<SurfaceTool> surftool = memnew(SurfaceTool);
  				surftool->begin(Mesh::PRIMITIVE_TRIANGLES);
  
  				// Arrow profile
  				const int arrow_points = 5;
  				Vector3 arrow[5] = {
  					nivec * 0.0 + ivec * 0.0,
  					nivec * 0.01 + ivec * 0.0,
  					nivec * 0.01 + ivec * GIZMO_ARROW_OFFSET,
  					nivec * 0.065 + ivec * GIZMO_ARROW_OFFSET,
  					nivec * 0.0 + ivec * (GIZMO_ARROW_OFFSET + GIZMO_ARROW_SIZE),
  				};
  
  				int arrow_sides = 16;
  
  				for (int k = 0; k < arrow_sides; k++) {
  
  					Basis ma(ivec, Math_PI * 2 * float(k) / arrow_sides);
  					Basis mb(ivec, Math_PI * 2 * float(k + 1) / arrow_sides);
  
  					for (int j = 0; j < arrow_points - 1; j++) {
  
  						Vector3 points[4] = {
  							ma.xform(arrow[j]),
  							mb.xform(arrow[j]),
  							mb.xform(arrow[j + 1]),
  							ma.xform(arrow[j + 1]),
  						};
  						surftool->add_vertex(points[0]);
  						surftool->add_vertex(points[1]);
  						surftool->add_vertex(points[2]);
  
  						surftool->add_vertex(points[0]);
  						surftool->add_vertex(points[2]);
  						surftool->add_vertex(points[3]);
  					}
  				}
  
  				surftool->set_material(mat);
  				surftool->commit(move_gizmo[i]);
  			}
  
  			// Plane Translation
  			{
  				Ref<SurfaceTool> surftool = memnew(SurfaceTool);
  				surftool->begin(Mesh::PRIMITIVE_TRIANGLES);
  
  				Vector3 vec = ivec2 - ivec3;
  				Vector3 plane[4] = {
  					vec * GIZMO_PLANE_DST,
  					vec * GIZMO_PLANE_DST + ivec2 * GIZMO_PLANE_SIZE,
  					vec * (GIZMO_PLANE_DST + GIZMO_PLANE_SIZE),
  					vec * GIZMO_PLANE_DST - ivec3 * GIZMO_PLANE_SIZE
  				};
  
  				Basis ma(ivec, Math_PI / 2);
  
  				Vector3 points[4] = {
  					ma.xform(plane[0]),
  					ma.xform(plane[1]),
  					ma.xform(plane[2]),
  					ma.xform(plane[3]),
  				};
  				surftool->add_vertex(points[0]);
  				surftool->add_vertex(points[1]);
  				surftool->add_vertex(points[2]);
  
  				surftool->add_vertex(points[0]);
  				surftool->add_vertex(points[2]);
  				surftool->add_vertex(points[3]);
  
  				Ref<StandardMaterial3D> plane_mat = memnew(StandardMaterial3D);
  				plane_mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  				plane_mat->set_on_top_of_alpha();
  				plane_mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
  				plane_mat->set_cull_mode(StandardMaterial3D::CULL_DISABLED);
  				plane_mat->set_albedo(col);
  				plane_gizmo_color[i] = plane_mat; // needed, so we can draw planes from both sides
  				surftool->set_material(plane_mat);
  				surftool->commit(move_plane_gizmo[i]);
  
  				Ref<StandardMaterial3D> plane_mat_hl = plane_mat->duplicate();
  				plane_mat_hl->set_albedo(Color(col.r, col.g, col.b, 1.0));
  				plane_gizmo_color_hl[i] = plane_mat_hl; // needed, so we can draw planes from both sides
  			}
  
  			// Rotate
  			{
  
  				Ref<SurfaceTool> surftool = memnew(SurfaceTool);
  				surftool->begin(Mesh::PRIMITIVE_TRIANGLES);
  
  				Vector3 circle[5] = {
  					ivec * 0.02 + ivec2 * 0.02 + ivec2 * GIZMO_CIRCLE_SIZE,
  					ivec * -0.02 + ivec2 * 0.02 + ivec2 * GIZMO_CIRCLE_SIZE,
  					ivec * -0.02 + ivec2 * -0.02 + ivec2 * GIZMO_CIRCLE_SIZE,
  					ivec * 0.02 + ivec2 * -0.02 + ivec2 * GIZMO_CIRCLE_SIZE,
  					ivec * 0.02 + ivec2 * 0.02 + ivec2 * GIZMO_CIRCLE_SIZE,
  				};
  
  				for (int k = 0; k < 64; k++) {
  
  					Basis ma(ivec, Math_PI * 2 * float(k) / 64);
  					Basis mb(ivec, Math_PI * 2 * float(k + 1) / 64);
  
  					for (int j = 0; j < 4; j++) {
  
  						Vector3 points[4] = {
  							ma.xform(circle[j]),
  							mb.xform(circle[j]),
  							mb.xform(circle[j + 1]),
  							ma.xform(circle[j + 1]),
  						};
  						surftool->add_vertex(points[0]);
  						surftool->add_vertex(points[1]);
  						surftool->add_vertex(points[2]);
  
  						surftool->add_vertex(points[0]);
  						surftool->add_vertex(points[2]);
  						surftool->add_vertex(points[3]);
  					}
  				}
  
  				surftool->set_material(mat);
  				surftool->commit(rotate_gizmo[i]);
  			}
  
  			// Scale
  			{
  				Ref<SurfaceTool> surftool = memnew(SurfaceTool);
  				surftool->begin(Mesh::PRIMITIVE_TRIANGLES);
  
  				// Cube arrow profile
  				const int arrow_points = 6;
  				Vector3 arrow[6] = {
  					nivec * 0.0 + ivec * 0.0,
  					nivec * 0.01 + ivec * 0.0,
  					nivec * 0.01 + ivec * 1.0 * GIZMO_SCALE_OFFSET,
  					nivec * 0.07 + ivec * 1.0 * GIZMO_SCALE_OFFSET,
  					nivec * 0.07 + ivec * 1.11 * GIZMO_SCALE_OFFSET,
  					nivec * 0.0 + ivec * 1.11 * GIZMO_SCALE_OFFSET,
  				};
  
  				int arrow_sides = 4;
  
  				for (int k = 0; k < 4; k++) {
  
  					Basis ma(ivec, Math_PI * 2 * float(k) / arrow_sides);
  					Basis mb(ivec, Math_PI * 2 * float(k + 1) / arrow_sides);
  
  					for (int j = 0; j < arrow_points - 1; j++) {
  
  						Vector3 points[4] = {
  							ma.xform(arrow[j]),
  							mb.xform(arrow[j]),
  							mb.xform(arrow[j + 1]),
  							ma.xform(arrow[j + 1]),
  						};
  						surftool->add_vertex(points[0]);
  						surftool->add_vertex(points[1]);
  						surftool->add_vertex(points[2]);
  
  						surftool->add_vertex(points[0]);
  						surftool->add_vertex(points[2]);
  						surftool->add_vertex(points[3]);
  					}
  				}
  
  				surftool->set_material(mat);
  				surftool->commit(scale_gizmo[i]);
  			}
  
  			// Plane Scale
  			{
  				Ref<SurfaceTool> surftool = memnew(SurfaceTool);
  				surftool->begin(Mesh::PRIMITIVE_TRIANGLES);
  
  				Vector3 vec = ivec2 - ivec3;
  				Vector3 plane[4] = {
  					vec * GIZMO_PLANE_DST,
  					vec * GIZMO_PLANE_DST + ivec2 * GIZMO_PLANE_SIZE,
  					vec * (GIZMO_PLANE_DST + GIZMO_PLANE_SIZE),
  					vec * GIZMO_PLANE_DST - ivec3 * GIZMO_PLANE_SIZE
  				};
  
  				Basis ma(ivec, Math_PI / 2);
  
  				Vector3 points[4] = {
  					ma.xform(plane[0]),
  					ma.xform(plane[1]),
  					ma.xform(plane[2]),
  					ma.xform(plane[3]),
  				};
  				surftool->add_vertex(points[0]);
  				surftool->add_vertex(points[1]);
  				surftool->add_vertex(points[2]);
  
  				surftool->add_vertex(points[0]);
  				surftool->add_vertex(points[2]);
  				surftool->add_vertex(points[3]);
  
  				Ref<StandardMaterial3D> plane_mat = memnew(StandardMaterial3D);
  				plane_mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  				plane_mat->set_on_top_of_alpha();
  				plane_mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
  				plane_mat->set_cull_mode(StandardMaterial3D::CULL_DISABLED);
  				plane_mat->set_albedo(col);
  				plane_gizmo_color[i] = plane_mat; // needed, so we can draw planes from both sides
  				surftool->set_material(plane_mat);
  				surftool->commit(scale_plane_gizmo[i]);
  
  				Ref<StandardMaterial3D> plane_mat_hl = plane_mat->duplicate();
  				plane_mat_hl->set_albedo(Color(col.r, col.g, col.b, 1.0));
  				plane_gizmo_color_hl[i] = plane_mat_hl; // needed, so we can draw planes from both sides
  			}
  		}
  	}
  
  	_generate_selection_box();
  }
  
  void Node3DEditor::_update_gizmos_menu() {
  
  	gizmos_menu->clear();
  
  	for (int i = 0; i < gizmo_plugins_by_name.size(); ++i) {
  		if (!gizmo_plugins_by_name[i]->can_be_hidden()) continue;
  		String plugin_name = gizmo_plugins_by_name[i]->get_name();
  		const int plugin_state = gizmo_plugins_by_name[i]->get_state();
  		gizmos_menu->add_multistate_item(TTR(plugin_name), 3, plugin_state, i);
  		const int idx = gizmos_menu->get_item_index(i);
  		switch (plugin_state) {
  			case EditorNode3DGizmoPlugin::VISIBLE:
  				gizmos_menu->set_item_icon(idx, gizmos_menu->get_theme_icon("visibility_visible"));
  				break;
  			case EditorNode3DGizmoPlugin::ON_TOP:
  				gizmos_menu->set_item_icon(idx, gizmos_menu->get_theme_icon("visibility_xray"));
  				break;
  			case EditorNode3DGizmoPlugin::HIDDEN:
  				gizmos_menu->set_item_icon(idx, gizmos_menu->get_theme_icon("visibility_hidden"));
  				break;
  		}
  	}
  }
  
  void Node3DEditor::_update_gizmos_menu_theme() {
  	for (int i = 0; i < gizmo_plugins_by_name.size(); ++i) {
  		if (!gizmo_plugins_by_name[i]->can_be_hidden()) continue;
  		const int plugin_state = gizmo_plugins_by_name[i]->get_state();
  		const int idx = gizmos_menu->get_item_index(i);
  		switch (plugin_state) {
  			case EditorNode3DGizmoPlugin::VISIBLE:
  				gizmos_menu->set_item_icon(idx, gizmos_menu->get_theme_icon("visibility_visible"));
  				break;
  			case EditorNode3DGizmoPlugin::ON_TOP:
  				gizmos_menu->set_item_icon(idx, gizmos_menu->get_theme_icon("visibility_xray"));
  				break;
  			case EditorNode3DGizmoPlugin::HIDDEN:
  				gizmos_menu->set_item_icon(idx, gizmos_menu->get_theme_icon("visibility_hidden"));
  				break;
  		}
  	}
  }
  
  void Node3DEditor::_init_grid() {
  
  	Vector<Color> grid_colors[3];
  	Vector<Vector3> grid_points[3];
  
  	Color primary_grid_color = EditorSettings::get_singleton()->get("editors/3d/primary_grid_color");
  	Color secondary_grid_color = EditorSettings::get_singleton()->get("editors/3d/secondary_grid_color");
  	int grid_size = EditorSettings::get_singleton()->get("editors/3d/grid_size");
  	int primary_grid_steps = EditorSettings::get_singleton()->get("editors/3d/primary_grid_steps");
  
  	for (int i = 0; i < 3; i++) {
  		Vector3 axis;
  		axis[i] = 1;
  		Vector3 axis_n1;
  		axis_n1[(i + 1) % 3] = 1;
  		Vector3 axis_n2;
  		axis_n2[(i + 2) % 3] = 1;
  
  		for (int j = -grid_size; j <= grid_size; j++) {
  			Vector3 p1 = axis_n1 * j + axis_n2 * -grid_size;
  			Vector3 p1_dest = p1 * (-axis_n2 + axis_n1);
  			Vector3 p2 = axis_n2 * j + axis_n1 * -grid_size;
  			Vector3 p2_dest = p2 * (-axis_n1 + axis_n2);
  
  			Color line_color = secondary_grid_color;
  			if (origin_enabled && j == 0) {
  				// Don't draw the center lines of the grid if the origin is enabled
  				// The origin would overlap the grid lines in this case, causing flickering
  				continue;
  			} else if (j % primary_grid_steps == 0) {
  				line_color = primary_grid_color;
  			}
  
  			grid_points[i].push_back(p1);
  			grid_points[i].push_back(p1_dest);
  			grid_colors[i].push_back(line_color);
  			grid_colors[i].push_back(line_color);
  
  			grid_points[i].push_back(p2);
  			grid_points[i].push_back(p2_dest);
  			grid_colors[i].push_back(line_color);
  			grid_colors[i].push_back(line_color);
  		}
  
  		grid[i] = RenderingServer::get_singleton()->mesh_create();
  		Array d;
  		d.resize(RS::ARRAY_MAX);
  		d[RenderingServer::ARRAY_VERTEX] = grid_points[i];
  		d[RenderingServer::ARRAY_COLOR] = grid_colors[i];
  		RenderingServer::get_singleton()->mesh_add_surface_from_arrays(grid[i], RenderingServer::PRIMITIVE_LINES, d);
  		RenderingServer::get_singleton()->mesh_surface_set_material(grid[i], 0, indicator_mat->get_rid());
  		grid_instance[i] = RenderingServer::get_singleton()->instance_create2(grid[i], get_tree()->get_root()->get_world()->get_scenario());
  
  		RenderingServer::get_singleton()->instance_set_visible(grid_instance[i], grid_visible[i]);
  		RenderingServer::get_singleton()->instance_geometry_set_cast_shadows_setting(grid_instance[i], RS::SHADOW_CASTING_SETTING_OFF);
  		RS::get_singleton()->instance_set_layer_mask(grid_instance[i], 1 << Node3DEditorViewport::GIZMO_GRID_LAYER);
  	}
  }
  
  void Node3DEditor::_finish_indicators() {
  
  	RenderingServer::get_singleton()->free(origin_instance);
  	RenderingServer::get_singleton()->free(origin);
  
  	_finish_grid();
  }
  
  void Node3DEditor::_finish_grid() {
  	for (int i = 0; i < 3; i++) {
  		RenderingServer::get_singleton()->free(grid_instance[i]);
  		RenderingServer::get_singleton()->free(grid[i]);
  	}
  }
  
  bool Node3DEditor::is_any_freelook_active() const {
  	for (unsigned int i = 0; i < VIEWPORTS_COUNT; ++i) {
  		if (viewports[i]->is_freelook_active())
  			return true;
  	}
  	return false;
  }
  
  void Node3DEditor::_refresh_menu_icons() {
  
  	bool all_locked = true;
  	bool all_grouped = true;
  
  	List<Node *> &selection = editor_selection->get_selected_node_list();
  
  	if (selection.empty()) {
  		all_locked = false;
  		all_grouped = false;
  	} else {
  		for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  			if (Object::cast_to<Node3D>(E->get()) && !Object::cast_to<Node3D>(E->get())->has_meta("_edit_lock_")) {
  				all_locked = false;
  				break;
  			}
  		}
  		for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  			if (Object::cast_to<Node3D>(E->get()) && !Object::cast_to<Node3D>(E->get())->has_meta("_edit_group_")) {
  				all_grouped = false;
  				break;
  			}
  		}
  	}
  
  	tool_button[TOOL_LOCK_SELECTED]->set_visible(!all_locked);
  	tool_button[TOOL_LOCK_SELECTED]->set_disabled(selection.empty());
  	tool_button[TOOL_UNLOCK_SELECTED]->set_visible(all_locked);
  
  	tool_button[TOOL_GROUP_SELECTED]->set_visible(!all_grouped);
  	tool_button[TOOL_GROUP_SELECTED]->set_disabled(selection.empty());
  	tool_button[TOOL_UNGROUP_SELECTED]->set_visible(all_grouped);
  }
  
  template <typename T>
  Set<T *> _get_child_nodes(Node *parent_node) {
  	Set<T *> nodes = Set<T *>();
  	T *node = Node::cast_to<T>(parent_node);
  	if (node) {
  		nodes.insert(node);
  	}
  
  	for (int i = 0; i < parent_node->get_child_count(); i++) {
  		Node *child_node = parent_node->get_child(i);
  		Set<T *> child_nodes = _get_child_nodes<T>(child_node);
  		for (typename Set<T *>::Element *I = child_nodes.front(); I; I = I->next()) {
  			nodes.insert(I->get());
  		}
  	}
  
  	return nodes;
  }
  
  Set<RID> _get_physics_bodies_rid(Node *node) {
  	Set<RID> rids = Set<RID>();
  	PhysicsBody3D *pb = Node::cast_to<PhysicsBody3D>(node);
  	if (pb) {
  		rids.insert(pb->get_rid());
  	}
  	Set<PhysicsBody3D *> child_nodes = _get_child_nodes<PhysicsBody3D>(node);
  	for (Set<PhysicsBody3D *>::Element *I = child_nodes.front(); I; I = I->next()) {
  		rids.insert(I->get()->get_rid());
  	}
  
  	return rids;
  }
  
  void Node3DEditor::snap_selected_nodes_to_floor() {
  	List<Node *> &selection = editor_selection->get_selected_node_list();
  	Dictionary snap_data;
  
  	for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
  		Node3D *sp = Object::cast_to<Node3D>(E->get());
  		if (sp) {
  			Vector3 from = Vector3();
  			Vector3 position_offset = Vector3();
  
  			// Priorities for snapping to floor are CollisionShapes, VisualInstances and then origin
  			Set<VisualInstance3D *> vi = _get_child_nodes<VisualInstance3D>(sp);
  			Set<CollisionShape3D *> cs = _get_child_nodes<CollisionShape3D>(sp);
  
  			if (cs.size()) {
  				AABB aabb = sp->get_global_transform().xform(cs.front()->get()->get_shape()->get_debug_mesh()->get_aabb());
  				for (Set<CollisionShape3D *>::Element *I = cs.front(); I; I = I->next()) {
  					aabb.merge_with(sp->get_global_transform().xform(I->get()->get_shape()->get_debug_mesh()->get_aabb()));
  				}
  				Vector3 size = aabb.size * Vector3(0.5, 0.0, 0.5);
  				from = aabb.position + size;
  				position_offset.y = from.y - sp->get_global_transform().origin.y;
  			} else if (vi.size()) {
  				AABB aabb = vi.front()->get()->get_transformed_aabb();
  				for (Set<VisualInstance3D *>::Element *I = vi.front(); I; I = I->next()) {
  					aabb.merge_with(I->get()->get_transformed_aabb());
  				}
  				Vector3 size = aabb.size * Vector3(0.5, 0.0, 0.5);
  				from = aabb.position + size;
  				position_offset.y = from.y - sp->get_global_transform().origin.y;
  			} else {
  				from = sp->get_global_transform().origin;
  			}
  
  			// We add a bit of margin to the from position to avoid it from snapping
  			// when the spatial is already on a floor and there's another floor under
  			// it
  			from = from + Vector3(0.0, 0.2, 0.0);
  
  			Dictionary d;
  
  			d["from"] = from;
  			d["position_offset"] = position_offset;
  			snap_data[sp] = d;
  		}
  	}
  
  	PhysicsDirectSpaceState3D *ss = get_tree()->get_root()->get_world()->get_direct_space_state();
  	PhysicsDirectSpaceState3D::RayResult result;
  
  	Array keys = snap_data.keys();
  
  	// The maximum height an object can travel to be snapped
  	const float max_snap_height = 20.0;
  
  	// Will be set to `true` if at least one node from the selection was successfully snapped
  	bool snapped_to_floor = false;
  
  	if (keys.size()) {
  		// For snapping to be performed, there must be solid geometry under at least one of the selected nodes.
  		// We need to check this before snapping to register the undo/redo action only if needed.
  		for (int i = 0; i < keys.size(); i++) {
  			Node *node = keys[i];
  			Node3D *sp = Object::cast_to<Node3D>(node);
  			Dictionary d = snap_data[node];
  			Vector3 from = d["from"];
  			Vector3 to = from - Vector3(0.0, max_snap_height, 0.0);
  			Set<RID> excluded = _get_physics_bodies_rid(sp);
  
  			if (ss->intersect_ray(from, to, result, excluded)) {
  				snapped_to_floor = true;
  			}
  		}
  
  		if (snapped_to_floor) {
  			undo_redo->create_action(TTR("Snap Nodes To Floor"));
  
  			// Perform snapping if at least one node can be snapped
  			for (int i = 0; i < keys.size(); i++) {
  				Node *node = keys[i];
  				Node3D *sp = Object::cast_to<Node3D>(node);
  				Dictionary d = snap_data[node];
  				Vector3 from = d["from"];
  				Vector3 to = from - Vector3(0.0, max_snap_height, 0.0);
  				Set<RID> excluded = _get_physics_bodies_rid(sp);
  
  				if (ss->intersect_ray(from, to, result, excluded)) {
  					Vector3 position_offset = d["position_offset"];
  					Transform new_transform = sp->get_global_transform();
  
  					new_transform.origin.y = result.position.y;
  					new_transform.origin = new_transform.origin - position_offset;
  
  					undo_redo->add_do_method(sp, "set_global_transform", new_transform);
  					undo_redo->add_undo_method(sp, "set_global_transform", sp->get_global_transform());
  				}
  			}
  
  			undo_redo->commit_action();
  		} else {
  			EditorNode::get_singleton()->show_warning(TTR("Couldn't find a solid floor to snap the selection to."));
  		}
  	}
  }
  
  void Node3DEditor::_unhandled_key_input(Ref<InputEvent> p_event) {
  
  	if (!is_visible_in_tree())
  		return;
  
  	snap_key_enabled = InputFilter::get_singleton()->is_key_pressed(KEY_CONTROL);
  }
  void Node3DEditor::_notification(int p_what) {
  
  	if (p_what == NOTIFICATION_READY) {
  
  		tool_button[Node3DEditor::TOOL_MODE_SELECT]->set_icon(get_theme_icon("ToolSelect", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_MOVE]->set_icon(get_theme_icon("ToolMove", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_ROTATE]->set_icon(get_theme_icon("ToolRotate", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_SCALE]->set_icon(get_theme_icon("ToolScale", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_LIST_SELECT]->set_icon(get_theme_icon("ListSelect", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_LOCK_SELECTED]->set_icon(get_theme_icon("Lock", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_UNLOCK_SELECTED]->set_icon(get_theme_icon("Unlock", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_GROUP_SELECTED]->set_icon(get_theme_icon("Group", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_UNGROUP_SELECTED]->set_icon(get_theme_icon("Ungroup", "EditorIcons"));
  
  		tool_option_button[Node3DEditor::TOOL_OPT_LOCAL_COORDS]->set_icon(get_theme_icon("Object", "EditorIcons"));
  		tool_option_button[Node3DEditor::TOOL_OPT_USE_SNAP]->set_icon(get_theme_icon("Snap", "EditorIcons"));
  		tool_option_button[Node3DEditor::TOOL_OPT_OVERRIDE_CAMERA]->set_icon(get_theme_icon("Camera3D", "EditorIcons"));
  
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), get_theme_icon("Panels1", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), get_theme_icon("Panels2", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), get_theme_icon("Panels2Alt", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), get_theme_icon("Panels3", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), get_theme_icon("Panels3Alt", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), get_theme_icon("Panels4", "EditorIcons"));
  
  		_menu_item_pressed(MENU_VIEW_USE_1_VIEWPORT);
  
  		_refresh_menu_icons();
  
  		get_tree()->connect("node_removed", callable_mp(this, &Node3DEditor::_node_removed));
  		EditorNode::get_singleton()->get_scene_tree_dock()->get_tree_editor()->connect("node_changed", callable_mp(this, &Node3DEditor::_refresh_menu_icons));
  		editor_selection->connect("selection_changed", callable_mp(this, &Node3DEditor::_refresh_menu_icons));
  
  		editor->connect("stop_pressed", callable_mp(this, &Node3DEditor::_update_camera_override_button), make_binds(false));
  		editor->connect("play_pressed", callable_mp(this, &Node3DEditor::_update_camera_override_button), make_binds(true));
  	} else if (p_what == NOTIFICATION_ENTER_TREE) {
  
  		_register_all_gizmos();
  		_update_gizmos_menu();
  		_init_indicators();
  	} else if (p_what == NOTIFICATION_THEME_CHANGED) {
  		_update_gizmos_menu_theme();
  	} else if (p_what == NOTIFICATION_EXIT_TREE) {
  
  		_finish_indicators();
  	} else if (p_what == EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED) {
  		tool_button[Node3DEditor::TOOL_MODE_SELECT]->set_icon(get_theme_icon("ToolSelect", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_MOVE]->set_icon(get_theme_icon("ToolMove", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_ROTATE]->set_icon(get_theme_icon("ToolRotate", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_SCALE]->set_icon(get_theme_icon("ToolScale", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_MODE_LIST_SELECT]->set_icon(get_theme_icon("ListSelect", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_LOCK_SELECTED]->set_icon(get_theme_icon("Lock", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_UNLOCK_SELECTED]->set_icon(get_theme_icon("Unlock", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_GROUP_SELECTED]->set_icon(get_theme_icon("Group", "EditorIcons"));
  		tool_button[Node3DEditor::TOOL_UNGROUP_SELECTED]->set_icon(get_theme_icon("Ungroup", "EditorIcons"));
  
  		tool_option_button[Node3DEditor::TOOL_OPT_LOCAL_COORDS]->set_icon(get_theme_icon("Object", "EditorIcons"));
  		tool_option_button[Node3DEditor::TOOL_OPT_USE_SNAP]->set_icon(get_theme_icon("Snap", "EditorIcons"));
  
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT), get_theme_icon("Panels1", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS), get_theme_icon("Panels2", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT), get_theme_icon("Panels2Alt", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS), get_theme_icon("Panels3", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT), get_theme_icon("Panels3Alt", "EditorIcons"));
  		view_menu->get_popup()->set_item_icon(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS), get_theme_icon("Panels4", "EditorIcons"));
  
  		// Update grid color by rebuilding grid.
  		_finish_grid();
  		_init_grid();
  	} else if (p_what == NOTIFICATION_VISIBILITY_CHANGED) {
  		if (!is_visible() && tool_option_button[TOOL_OPT_OVERRIDE_CAMERA]->is_pressed()) {
  			EditorDebuggerNode *debugger = EditorDebuggerNode::get_singleton();
  
  			debugger->set_camera_override(EditorDebuggerNode::OVERRIDE_NONE);
  			tool_option_button[TOOL_OPT_OVERRIDE_CAMERA]->set_pressed(false);
  		}
  	}
  }
  
  void Node3DEditor::add_control_to_menu_panel(Control *p_control) {
  
  	hbc_menu->add_child(p_control);
  }
  
  void Node3DEditor::remove_control_from_menu_panel(Control *p_control) {
  
  	hbc_menu->remove_child(p_control);
  }
  
  void Node3DEditor::set_can_preview(Camera3D *p_preview) {
  
  	for (int i = 0; i < 4; i++) {
  		viewports[i]->set_can_preview(p_preview);
  	}
  }
  
  VSplitContainer *Node3DEditor::get_shader_split() {
  
  	return shader_split;
  }
  
  HSplitContainer *Node3DEditor::get_palette_split() {
  
  	return palette_split;
  }
  
  void Node3DEditor::_request_gizmo(Object *p_obj) {
  
  	Node3D *sp = Object::cast_to<Node3D>(p_obj);
  	if (!sp)
  		return;
  	if (editor->get_edited_scene() && (sp == editor->get_edited_scene() || (sp->get_owner() && editor->get_edited_scene()->is_a_parent_of(sp)))) {
  
  		Ref<EditorNode3DGizmo> seg;
  
  		for (int i = 0; i < gizmo_plugins_by_priority.size(); ++i) {
  			seg = gizmo_plugins_by_priority.write[i]->get_gizmo(sp);
  
  			if (seg.is_valid()) {
  				sp->set_gizmo(seg);
  
  				if (sp == selected) {
  					seg->set_selected(true);
  					selected->update_gizmo();
  				}
  
  				break;
  			}
  		}
  	}
  }
  
  void Node3DEditor::_toggle_maximize_view(Object *p_viewport) {
  	if (!p_viewport) return;
  	Node3DEditorViewport *current_viewport = Object::cast_to<Node3DEditorViewport>(p_viewport);
  	if (!current_viewport) return;
  
  	int index = -1;
  	bool maximized = false;
  	for (int i = 0; i < 4; i++) {
  		if (viewports[i] == current_viewport) {
  			index = i;
  			if (current_viewport->get_global_rect() == viewport_base->get_global_rect())
  				maximized = true;
  			break;
  		}
  	}
  	if (index == -1) return;
  
  	if (!maximized) {
  
  		for (uint32_t i = 0; i < VIEWPORTS_COUNT; i++) {
  			if (i == (uint32_t)index)
  				viewports[i]->set_anchors_and_margins_preset(Control::PRESET_WIDE);
  			else
  				viewports[i]->hide();
  		}
  	} else {
  
  		for (uint32_t i = 0; i < VIEWPORTS_COUNT; i++)
  			viewports[i]->show();
  
  		if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_1_VIEWPORT)))
  			_menu_item_pressed(MENU_VIEW_USE_1_VIEWPORT);
  		else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS)))
  			_menu_item_pressed(MENU_VIEW_USE_2_VIEWPORTS);
  		else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_2_VIEWPORTS_ALT)))
  			_menu_item_pressed(MENU_VIEW_USE_2_VIEWPORTS_ALT);
  		else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS)))
  			_menu_item_pressed(MENU_VIEW_USE_3_VIEWPORTS);
  		else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_3_VIEWPORTS_ALT)))
  			_menu_item_pressed(MENU_VIEW_USE_3_VIEWPORTS_ALT);
  		else if (view_menu->get_popup()->is_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_USE_4_VIEWPORTS)))
  			_menu_item_pressed(MENU_VIEW_USE_4_VIEWPORTS);
  	}
  }
  
  void Node3DEditor::_node_removed(Node *p_node) {
  
  	if (p_node == selected)
  		selected = NULL;
  }
  
  void Node3DEditor::_register_all_gizmos() {
  	add_gizmo_plugin(Ref<CameraNode3DGizmoPlugin>(memnew(CameraNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<LightNode3DGizmoPlugin>(memnew(LightNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<AudioStreamPlayer3DNode3DGizmoPlugin>(memnew(AudioStreamPlayer3DNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<MeshInstanceNode3DGizmoPlugin>(memnew(MeshInstanceNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<SoftBodyNode3DGizmoPlugin>(memnew(SoftBodyNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<Sprite3DNode3DGizmoPlugin>(memnew(Sprite3DNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<SkeletonNode3DGizmoPlugin>(memnew(SkeletonNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<Position3DNode3DGizmoPlugin>(memnew(Position3DNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<RayCastNode3DGizmoPlugin>(memnew(RayCastNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<SpringArmNode3DGizmoPlugin>(memnew(SpringArmNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<VehicleWheelNode3DGizmoPlugin>(memnew(VehicleWheelNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<VisibilityNotifierGizmoPlugin>(memnew(VisibilityNotifierGizmoPlugin)));
  	add_gizmo_plugin(Ref<ParticlesGizmoPlugin>(memnew(ParticlesGizmoPlugin)));
  	add_gizmo_plugin(Ref<CPUParticlesGizmoPlugin>(memnew(CPUParticlesGizmoPlugin)));
  	add_gizmo_plugin(Ref<ReflectionProbeGizmoPlugin>(memnew(ReflectionProbeGizmoPlugin)));
  	add_gizmo_plugin(Ref<GIProbeGizmoPlugin>(memnew(GIProbeGizmoPlugin)));
  	//	add_gizmo_plugin(Ref<BakedIndirectLightGizmoPlugin>(memnew(BakedIndirectLightGizmoPlugin)));
  	add_gizmo_plugin(Ref<CollisionShapeNode3DGizmoPlugin>(memnew(CollisionShapeNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<CollisionPolygonNode3DGizmoPlugin>(memnew(CollisionPolygonNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<NavigationMeshNode3DGizmoPlugin>(memnew(NavigationMeshNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<JointNode3DGizmoPlugin>(memnew(JointNode3DGizmoPlugin)));
  	add_gizmo_plugin(Ref<PhysicalBoneNode3DGizmoPlugin>(memnew(PhysicalBoneNode3DGizmoPlugin)));
  }
  
  void Node3DEditor::_bind_methods() {
  
  	ClassDB::bind_method("_unhandled_key_input", &Node3DEditor::_unhandled_key_input);
  	ClassDB::bind_method("_get_editor_data", &Node3DEditor::_get_editor_data);
  	ClassDB::bind_method("_request_gizmo", &Node3DEditor::_request_gizmo);
  
  	ADD_SIGNAL(MethodInfo("transform_key_request"));
  	ADD_SIGNAL(MethodInfo("item_lock_status_changed"));
  	ADD_SIGNAL(MethodInfo("item_group_status_changed"));
  }
  
  void Node3DEditor::clear() {
  
  	settings_fov->set_value(EDITOR_DEF("editors/3d/default_fov", 70.0));
  	settings_znear->set_value(EDITOR_DEF("editors/3d/default_z_near", 0.05));
  	settings_zfar->set_value(EDITOR_DEF("editors/3d/default_z_far", 1500.0));
  
  	for (uint32_t i = 0; i < VIEWPORTS_COUNT; i++) {
  		viewports[i]->reset();
  	}
  
  	RenderingServer::get_singleton()->instance_set_visible(origin_instance, true);
  	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_ORIGIN), true);
  	for (int i = 0; i < 3; ++i) {
  		if (grid_enable[i]) {
  			RenderingServer::get_singleton()->instance_set_visible(grid_instance[i], true);
  			grid_visible[i] = true;
  		}
  	}
  
  	for (uint32_t i = 0; i < VIEWPORTS_COUNT; i++) {
  
  		viewports[i]->view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(Node3DEditorViewport::VIEW_AUDIO_LISTENER), i == 0);
  		viewports[i]->viewport->set_as_audio_listener(i == 0);
  	}
  
  	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(MENU_VIEW_GRID), true);
  }
  
  Node3DEditor::Node3DEditor(EditorNode *p_editor) {
  
  	gizmo.visible = true;
  	gizmo.scale = 1.0;
  
  	viewport_environment = Ref<Environment>(memnew(Environment));
  	undo_redo = p_editor->get_undo_redo();
  	VBoxContainer *vbc = this;
  
  	custom_camera = NULL;
  	singleton = this;
  	editor = p_editor;
  	editor_selection = editor->get_editor_selection();
  	editor_selection->add_editor_plugin(this);
  
  	snap_enabled = false;
  	snap_key_enabled = false;
  	tool_mode = TOOL_MODE_SELECT;
  
  	camera_override_viewport_id = 0;
  
  	hbc_menu = memnew(HBoxContainer);
  	vbc->add_child(hbc_menu);
  
  	Vector<Variant> button_binds;
  	button_binds.resize(1);
  	String sct;
  
  	tool_button[TOOL_MODE_SELECT] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_MODE_SELECT]);
  	tool_button[TOOL_MODE_SELECT]->set_toggle_mode(true);
  	tool_button[TOOL_MODE_SELECT]->set_flat(true);
  	tool_button[TOOL_MODE_SELECT]->set_pressed(true);
  	button_binds.write[0] = MENU_TOOL_SELECT;
  	tool_button[TOOL_MODE_SELECT]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_MODE_SELECT]->set_shortcut(ED_SHORTCUT("spatial_editor/tool_select", TTR("Select Mode"), KEY_Q));
  	tool_button[TOOL_MODE_SELECT]->set_tooltip(keycode_get_string(KEY_MASK_CMD) + TTR("Drag: Rotate\nAlt+Drag: Move\nAlt+RMB: Depth list selection"));
  
  	hbc_menu->add_child(memnew(VSeparator));
  
  	tool_button[TOOL_MODE_MOVE] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_MODE_MOVE]);
  	tool_button[TOOL_MODE_MOVE]->set_toggle_mode(true);
  	tool_button[TOOL_MODE_MOVE]->set_flat(true);
  	button_binds.write[0] = MENU_TOOL_MOVE;
  	tool_button[TOOL_MODE_MOVE]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_MODE_MOVE]->set_shortcut(ED_SHORTCUT("spatial_editor/tool_move", TTR("Move Mode"), KEY_W));
  
  	tool_button[TOOL_MODE_ROTATE] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_MODE_ROTATE]);
  	tool_button[TOOL_MODE_ROTATE]->set_toggle_mode(true);
  	tool_button[TOOL_MODE_ROTATE]->set_flat(true);
  	button_binds.write[0] = MENU_TOOL_ROTATE;
  	tool_button[TOOL_MODE_ROTATE]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_MODE_ROTATE]->set_shortcut(ED_SHORTCUT("spatial_editor/tool_rotate", TTR("Rotate Mode"), KEY_E));
  
  	tool_button[TOOL_MODE_SCALE] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_MODE_SCALE]);
  	tool_button[TOOL_MODE_SCALE]->set_toggle_mode(true);
  	tool_button[TOOL_MODE_SCALE]->set_flat(true);
  	button_binds.write[0] = MENU_TOOL_SCALE;
  	tool_button[TOOL_MODE_SCALE]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_MODE_SCALE]->set_shortcut(ED_SHORTCUT("spatial_editor/tool_scale", TTR("Scale Mode"), KEY_R));
  
  	hbc_menu->add_child(memnew(VSeparator));
  
  	tool_button[TOOL_MODE_LIST_SELECT] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_MODE_LIST_SELECT]);
  	tool_button[TOOL_MODE_LIST_SELECT]->set_toggle_mode(true);
  	tool_button[TOOL_MODE_LIST_SELECT]->set_flat(true);
  	button_binds.write[0] = MENU_TOOL_LIST_SELECT;
  	tool_button[TOOL_MODE_LIST_SELECT]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_MODE_LIST_SELECT]->set_tooltip(TTR("Show a list of all objects at the position clicked\n(same as Alt+RMB in select mode)."));
  
  	tool_button[TOOL_LOCK_SELECTED] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_LOCK_SELECTED]);
  	button_binds.write[0] = MENU_LOCK_SELECTED;
  	tool_button[TOOL_LOCK_SELECTED]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_LOCK_SELECTED]->set_tooltip(TTR("Lock the selected object in place (can't be moved)."));
  
  	tool_button[TOOL_UNLOCK_SELECTED] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_UNLOCK_SELECTED]);
  	button_binds.write[0] = MENU_UNLOCK_SELECTED;
  	tool_button[TOOL_UNLOCK_SELECTED]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_UNLOCK_SELECTED]->set_tooltip(TTR("Unlock the selected object (can be moved)."));
  
  	tool_button[TOOL_GROUP_SELECTED] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_GROUP_SELECTED]);
  	button_binds.write[0] = MENU_GROUP_SELECTED;
  	tool_button[TOOL_GROUP_SELECTED]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_GROUP_SELECTED]->set_tooltip(TTR("Makes sure the object's children are not selectable."));
  
  	tool_button[TOOL_UNGROUP_SELECTED] = memnew(ToolButton);
  	hbc_menu->add_child(tool_button[TOOL_UNGROUP_SELECTED]);
  	button_binds.write[0] = MENU_UNGROUP_SELECTED;
  	tool_button[TOOL_UNGROUP_SELECTED]->connect("pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed), button_binds);
  	tool_button[TOOL_UNGROUP_SELECTED]->set_tooltip(TTR("Restores the object's children's ability to be selected."));
  
  	hbc_menu->add_child(memnew(VSeparator));
  
  	tool_option_button[TOOL_OPT_LOCAL_COORDS] = memnew(ToolButton);
  	hbc_menu->add_child(tool_option_button[TOOL_OPT_LOCAL_COORDS]);
  	tool_option_button[TOOL_OPT_LOCAL_COORDS]->set_toggle_mode(true);
  	tool_option_button[TOOL_OPT_LOCAL_COORDS]->set_flat(true);
  	button_binds.write[0] = MENU_TOOL_LOCAL_COORDS;
  	tool_option_button[TOOL_OPT_LOCAL_COORDS]->connect("toggled", callable_mp(this, &Node3DEditor::_menu_item_toggled), button_binds);
  	tool_option_button[TOOL_OPT_LOCAL_COORDS]->set_shortcut(ED_SHORTCUT("spatial_editor/local_coords", TTR("Use Local Space"), KEY_T));
  
  	tool_option_button[TOOL_OPT_USE_SNAP] = memnew(ToolButton);
  	hbc_menu->add_child(tool_option_button[TOOL_OPT_USE_SNAP]);
  	tool_option_button[TOOL_OPT_USE_SNAP]->set_toggle_mode(true);
  	tool_option_button[TOOL_OPT_USE_SNAP]->set_flat(true);
  	button_binds.write[0] = MENU_TOOL_USE_SNAP;
  	tool_option_button[TOOL_OPT_USE_SNAP]->connect("toggled", callable_mp(this, &Node3DEditor::_menu_item_toggled), button_binds);
  	tool_option_button[TOOL_OPT_USE_SNAP]->set_shortcut(ED_SHORTCUT("spatial_editor/snap", TTR("Use Snap"), KEY_Y));
  
  	hbc_menu->add_child(memnew(VSeparator));
  
  	tool_option_button[TOOL_OPT_OVERRIDE_CAMERA] = memnew(ToolButton);
  	hbc_menu->add_child(tool_option_button[TOOL_OPT_OVERRIDE_CAMERA]);
  	tool_option_button[TOOL_OPT_OVERRIDE_CAMERA]->set_toggle_mode(true);
  	tool_option_button[TOOL_OPT_OVERRIDE_CAMERA]->set_flat(true);
  	tool_option_button[TOOL_OPT_OVERRIDE_CAMERA]->set_disabled(true);
  	button_binds.write[0] = MENU_TOOL_OVERRIDE_CAMERA;
  	tool_option_button[TOOL_OPT_OVERRIDE_CAMERA]->connect("toggled", callable_mp(this, &Node3DEditor::_menu_item_toggled), button_binds);
  	_update_camera_override_button(false);
  
  	hbc_menu->add_child(memnew(VSeparator));
  
  	// Drag and drop support;
  	preview_node = memnew(Node3D);
  	preview_bounds = AABB();
  
  	ED_SHORTCUT("spatial_editor/bottom_view", TTR("Bottom View"), KEY_MASK_ALT + KEY_KP_7);
  	ED_SHORTCUT("spatial_editor/top_view", TTR("Top View"), KEY_KP_7);
  	ED_SHORTCUT("spatial_editor/rear_view", TTR("Rear View"), KEY_MASK_ALT + KEY_KP_1);
  	ED_SHORTCUT("spatial_editor/front_view", TTR("Front View"), KEY_KP_1);
  	ED_SHORTCUT("spatial_editor/left_view", TTR("Left View"), KEY_MASK_ALT + KEY_KP_3);
  	ED_SHORTCUT("spatial_editor/right_view", TTR("Right View"), KEY_KP_3);
  	ED_SHORTCUT("spatial_editor/switch_perspective_orthogonal", TTR("Switch Perspective/Orthogonal View"), KEY_KP_5);
  	ED_SHORTCUT("spatial_editor/insert_anim_key", TTR("Insert Animation Key"), KEY_K);
  	ED_SHORTCUT("spatial_editor/focus_origin", TTR("Focus Origin"), KEY_O);
  	ED_SHORTCUT("spatial_editor/focus_selection", TTR("Focus Selection"), KEY_F);
  	ED_SHORTCUT("spatial_editor/align_transform_with_view", TTR("Align Transform with View"), KEY_MASK_ALT + KEY_MASK_CMD + KEY_M);
  	ED_SHORTCUT("spatial_editor/align_rotation_with_view", TTR("Align Rotation with View"), KEY_MASK_ALT + KEY_MASK_CMD + KEY_F);
  	ED_SHORTCUT("spatial_editor/freelook_toggle", TTR("Toggle Freelook"), KEY_MASK_SHIFT + KEY_F);
  
  	PopupMenu *p;
  
  	transform_menu = memnew(MenuButton);
  	transform_menu->set_text(TTR("Transform"));
  	transform_menu->set_switch_on_hover(true);
  	hbc_menu->add_child(transform_menu);
  
  	p = transform_menu->get_popup();
  	p->add_shortcut(ED_SHORTCUT("spatial_editor/snap_to_floor", TTR("Snap Object to Floor"), KEY_PAGEDOWN), MENU_SNAP_TO_FLOOR);
  	p->add_shortcut(ED_SHORTCUT("spatial_editor/transform_dialog", TTR("Transform Dialog...")), MENU_TRANSFORM_DIALOG);
  
  	p->add_separator();
  	p->add_shortcut(ED_SHORTCUT("spatial_editor/configure_snap", TTR("Configure Snap...")), MENU_TRANSFORM_CONFIGURE_SNAP);
  
  	p->connect("id_pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed));
  
  	view_menu = memnew(MenuButton);
  	view_menu->set_text(TTR("View"));
  	view_menu->set_switch_on_hover(true);
  	hbc_menu->add_child(view_menu);
  
  	p = view_menu->get_popup();
  
  	accept = memnew(AcceptDialog);
  	editor->get_gui_base()->add_child(accept);
  
  	p->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/1_viewport", TTR("1 Viewport"), KEY_MASK_CMD + KEY_1), MENU_VIEW_USE_1_VIEWPORT);
  	p->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/2_viewports", TTR("2 Viewports"), KEY_MASK_CMD + KEY_2), MENU_VIEW_USE_2_VIEWPORTS);
  	p->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/2_viewports_alt", TTR("2 Viewports (Alt)"), KEY_MASK_ALT + KEY_MASK_CMD + KEY_2), MENU_VIEW_USE_2_VIEWPORTS_ALT);
  	p->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/3_viewports", TTR("3 Viewports"), KEY_MASK_CMD + KEY_3), MENU_VIEW_USE_3_VIEWPORTS);
  	p->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/3_viewports_alt", TTR("3 Viewports (Alt)"), KEY_MASK_ALT + KEY_MASK_CMD + KEY_3), MENU_VIEW_USE_3_VIEWPORTS_ALT);
  	p->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/4_viewports", TTR("4 Viewports"), KEY_MASK_CMD + KEY_4), MENU_VIEW_USE_4_VIEWPORTS);
  	p->add_separator();
  
  	p->add_submenu_item(TTR("Gizmos"), "GizmosMenu");
  
  	p->add_separator();
  	p->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_origin", TTR("View Origin")), MENU_VIEW_ORIGIN);
  	p->add_check_shortcut(ED_SHORTCUT("spatial_editor/view_grid", TTR("View Grid")), MENU_VIEW_GRID);
  
  	p->add_separator();
  	p->add_shortcut(ED_SHORTCUT("spatial_editor/settings", TTR("Settings...")), MENU_VIEW_CAMERA_SETTINGS);
  
  	p->set_item_checked(p->get_item_index(MENU_VIEW_ORIGIN), true);
  	p->set_item_checked(p->get_item_index(MENU_VIEW_GRID), true);
  
  	p->connect("id_pressed", callable_mp(this, &Node3DEditor::_menu_item_pressed));
  
  	gizmos_menu = memnew(PopupMenu);
  	p->add_child(gizmos_menu);
  	gizmos_menu->set_name("GizmosMenu");
  	gizmos_menu->set_hide_on_checkable_item_selection(false);
  	gizmos_menu->connect("id_pressed", callable_mp(this, &Node3DEditor::_menu_gizmo_toggled));
  
  	/* REST OF MENU */
  
  	palette_split = memnew(HSplitContainer);
  	palette_split->set_v_size_flags(SIZE_EXPAND_FILL);
  	vbc->add_child(palette_split);
  
  	shader_split = memnew(VSplitContainer);
  	shader_split->set_h_size_flags(SIZE_EXPAND_FILL);
  	palette_split->add_child(shader_split);
  	viewport_base = memnew(Node3DEditorViewportContainer);
  	shader_split->add_child(viewport_base);
  	viewport_base->set_v_size_flags(SIZE_EXPAND_FILL);
  	for (uint32_t i = 0; i < VIEWPORTS_COUNT; i++) {
  
  		viewports[i] = memnew(Node3DEditorViewport(this, editor, i));
  		viewports[i]->connect("toggle_maximize_view", callable_mp(this, &Node3DEditor::_toggle_maximize_view));
  		viewports[i]->connect("clicked", callable_mp(this, &Node3DEditor::_update_camera_override_viewport));
  		viewports[i]->assign_pending_data_pointers(preview_node, &preview_bounds, accept);
  		viewport_base->add_child(viewports[i]);
  	}
  
  	/* SNAP DIALOG */
  
  	snap_translate_value = 1;
  	snap_rotate_value = 15;
  	snap_scale_value = 10;
  
  	snap_dialog = memnew(ConfirmationDialog);
  	snap_dialog->set_title(TTR("Snap Settings"));
  	add_child(snap_dialog);
  	snap_dialog->connect("confirmed", callable_mp(this, &Node3DEditor::_snap_changed));
  	snap_dialog->get_cancel()->connect("pressed", callable_mp(this, &Node3DEditor::_snap_update));
  
  	VBoxContainer *snap_dialog_vbc = memnew(VBoxContainer);
  	snap_dialog->add_child(snap_dialog_vbc);
  
  	snap_translate = memnew(LineEdit);
  	snap_dialog_vbc->add_margin_child(TTR("Translate Snap:"), snap_translate);
  
  	snap_rotate = memnew(LineEdit);
  	snap_dialog_vbc->add_margin_child(TTR("Rotate Snap (deg.):"), snap_rotate);
  
  	snap_scale = memnew(LineEdit);
  	snap_dialog_vbc->add_margin_child(TTR("Scale Snap (%):"), snap_scale);
  
  	_snap_update();
  
  	/* SETTINGS DIALOG */
  
  	settings_dialog = memnew(ConfirmationDialog);
  	settings_dialog->set_title(TTR("Viewport Settings"));
  	add_child(settings_dialog);
  	settings_vbc = memnew(VBoxContainer);
  	settings_vbc->set_custom_minimum_size(Size2(200, 0) * EDSCALE);
  	settings_dialog->add_child(settings_vbc);
  
  	settings_fov = memnew(SpinBox);
  	settings_fov->set_max(MAX_FOV);
  	settings_fov->set_min(MIN_FOV);
  	settings_fov->set_step(0.01);
  	settings_fov->set_value(EDITOR_DEF("editors/3d/default_fov", 70.0));
  	settings_vbc->add_margin_child(TTR("Perspective FOV (deg.):"), settings_fov);
  
  	settings_znear = memnew(SpinBox);
  	settings_znear->set_max(MAX_Z);
  	settings_znear->set_min(MIN_Z);
  	settings_znear->set_step(0.01);
  	settings_znear->set_value(EDITOR_DEF("editors/3d/default_z_near", 0.05));
  	settings_vbc->add_margin_child(TTR("View Z-Near:"), settings_znear);
  
  	settings_zfar = memnew(SpinBox);
  	settings_zfar->set_max(MAX_Z);
  	settings_zfar->set_min(MIN_Z);
  	settings_zfar->set_step(0.01);
  	settings_zfar->set_value(EDITOR_DEF("editors/3d/default_z_far", 1500));
  	settings_vbc->add_margin_child(TTR("View Z-Far:"), settings_zfar);
  
  	for (uint32_t i = 0; i < VIEWPORTS_COUNT; ++i) {
  		settings_dialog->connect("confirmed", callable_mp(viewports[i], &Node3DEditorViewport::_update_camera), varray(0.0));
  	}
  
  	/* XFORM DIALOG */
  
  	xform_dialog = memnew(ConfirmationDialog);
  	xform_dialog->set_title(TTR("Transform Change"));
  	add_child(xform_dialog);
  
  	VBoxContainer *xform_vbc = memnew(VBoxContainer);
  	xform_dialog->add_child(xform_vbc);
  
  	Label *l = memnew(Label);
  	l->set_text(TTR("Translate:"));
  	xform_vbc->add_child(l);
  
  	HBoxContainer *xform_hbc = memnew(HBoxContainer);
  	xform_vbc->add_child(xform_hbc);
  
  	for (int i = 0; i < 3; i++) {
  
  		xform_translate[i] = memnew(LineEdit);
  		xform_translate[i]->set_h_size_flags(SIZE_EXPAND_FILL);
  		xform_hbc->add_child(xform_translate[i]);
  	}
  
  	l = memnew(Label);
  	l->set_text(TTR("Rotate (deg.):"));
  	xform_vbc->add_child(l);
  
  	xform_hbc = memnew(HBoxContainer);
  	xform_vbc->add_child(xform_hbc);
  
  	for (int i = 0; i < 3; i++) {
  		xform_rotate[i] = memnew(LineEdit);
  		xform_rotate[i]->set_h_size_flags(SIZE_EXPAND_FILL);
  		xform_hbc->add_child(xform_rotate[i]);
  	}
  
  	l = memnew(Label);
  	l->set_text(TTR("Scale (ratio):"));
  	xform_vbc->add_child(l);
  
  	xform_hbc = memnew(HBoxContainer);
  	xform_vbc->add_child(xform_hbc);
  
  	for (int i = 0; i < 3; i++) {
  		xform_scale[i] = memnew(LineEdit);
  		xform_scale[i]->set_h_size_flags(SIZE_EXPAND_FILL);
  		xform_hbc->add_child(xform_scale[i]);
  	}
  
  	l = memnew(Label);
  	l->set_text(TTR("Transform Type"));
  	xform_vbc->add_child(l);
  
  	xform_type = memnew(OptionButton);
  	xform_type->set_h_size_flags(SIZE_EXPAND_FILL);
  	xform_type->add_item(TTR("Pre"));
  	xform_type->add_item(TTR("Post"));
  	xform_vbc->add_child(xform_type);
  
  	xform_dialog->connect("confirmed", callable_mp(this, &Node3DEditor::_xform_dialog_action));
  
  	scenario_debug = RenderingServer::SCENARIO_DEBUG_DISABLED;
  
  	selected = NULL;
  
  	set_process_unhandled_key_input(true);
  	add_to_group("_spatial_editor_group");
  
  	EDITOR_DEF("editors/3d/manipulator_gizmo_size", 80);
  	EditorSettings::get_singleton()->add_property_hint(PropertyInfo(Variant::INT, "editors/3d/manipulator_gizmo_size", PROPERTY_HINT_RANGE, "16,1024,1"));
  	EDITOR_DEF("editors/3d/manipulator_gizmo_opacity", 0.4);
  	EditorSettings::get_singleton()->add_property_hint(PropertyInfo(Variant::FLOAT, "editors/3d/manipulator_gizmo_opacity", PROPERTY_HINT_RANGE, "0,1,0.01"));
  	EDITOR_DEF("editors/3d/navigation/show_viewport_rotation_gizmo", true);
  
  	over_gizmo_handle = -1;
  }
  
  Node3DEditor::~Node3DEditor() {
  	memdelete(preview_node);
  }
  
  void Node3DEditorPlugin::make_visible(bool p_visible) {
  
  	if (p_visible) {
  
  		spatial_editor->show();
  		spatial_editor->set_process(true);
  
  	} else {
  
  		spatial_editor->hide();
  		spatial_editor->set_process(false);
  	}
  }
  void Node3DEditorPlugin::edit(Object *p_object) {
  
  	spatial_editor->edit(Object::cast_to<Node3D>(p_object));
  }
  
  bool Node3DEditorPlugin::handles(Object *p_object) const {
  
  	return p_object->is_class("Node3D");
  }
  
  Dictionary Node3DEditorPlugin::get_state() const {
  	return spatial_editor->get_state();
  }
  
  void Node3DEditorPlugin::set_state(const Dictionary &p_state) {
  
  	spatial_editor->set_state(p_state);
  }
  
  void Node3DEditor::snap_cursor_to_plane(const Plane &p_plane) {
  
  	//cursor.pos=p_plane.project(cursor.pos);
  }
  
  Vector3 Node3DEditor::snap_point(Vector3 p_target, Vector3 p_start) const {
  	if (is_snap_enabled()) {
  		p_target.x = Math::snap_scalar(0.0, get_translate_snap(), p_target.x);
  		p_target.y = Math::snap_scalar(0.0, get_translate_snap(), p_target.y);
  		p_target.z = Math::snap_scalar(0.0, get_translate_snap(), p_target.z);
  	}
  	return p_target;
  }
  
  float Node3DEditor::get_translate_snap() const {
  	float snap_value;
  	if (InputFilter::get_singleton()->is_key_pressed(KEY_SHIFT)) {
  		snap_value = snap_translate->get_text().to_double() / 10.0;
  	} else {
  		snap_value = snap_translate->get_text().to_double();
  	}
  
  	return snap_value;
  }
  
  float Node3DEditor::get_rotate_snap() const {
  	float snap_value;
  	if (InputFilter::get_singleton()->is_key_pressed(KEY_SHIFT)) {
  		snap_value = snap_rotate->get_text().to_double() / 3.0;
  	} else {
  		snap_value = snap_rotate->get_text().to_double();
  	}
  
  	return snap_value;
  }
  
  float Node3DEditor::get_scale_snap() const {
  	float snap_value;
  	if (InputFilter::get_singleton()->is_key_pressed(KEY_SHIFT)) {
  		snap_value = snap_scale->get_text().to_double() / 2.0;
  	} else {
  		snap_value = snap_scale->get_text().to_double();
  	}
  
  	return snap_value;
  }
  
  void Node3DEditorPlugin::_bind_methods() {
  
  	ClassDB::bind_method("snap_cursor_to_plane", &Node3DEditorPlugin::snap_cursor_to_plane);
  }
  
  void Node3DEditorPlugin::snap_cursor_to_plane(const Plane &p_plane) {
  
  	spatial_editor->snap_cursor_to_plane(p_plane);
  }
  
  struct _GizmoPluginPriorityComparator {
  
  	bool operator()(const Ref<EditorNode3DGizmoPlugin> &p_a, const Ref<EditorNode3DGizmoPlugin> &p_b) const {
  		if (p_a->get_priority() == p_b->get_priority()) {
  			return p_a->get_name() < p_b->get_name();
  		}
  		return p_a->get_priority() > p_b->get_priority();
  	}
  };
  
  struct _GizmoPluginNameComparator {
  
  	bool operator()(const Ref<EditorNode3DGizmoPlugin> &p_a, const Ref<EditorNode3DGizmoPlugin> &p_b) const {
  		return p_a->get_name() < p_b->get_name();
  	}
  };
  
  void Node3DEditor::add_gizmo_plugin(Ref<EditorNode3DGizmoPlugin> p_plugin) {
  	ERR_FAIL_NULL(p_plugin.ptr());
  
  	gizmo_plugins_by_priority.push_back(p_plugin);
  	gizmo_plugins_by_priority.sort_custom<_GizmoPluginPriorityComparator>();
  
  	gizmo_plugins_by_name.push_back(p_plugin);
  	gizmo_plugins_by_name.sort_custom<_GizmoPluginNameComparator>();
  
  	_update_gizmos_menu();
  	Node3DEditor::get_singleton()->update_all_gizmos();
  }
  
  void Node3DEditor::remove_gizmo_plugin(Ref<EditorNode3DGizmoPlugin> p_plugin) {
  	gizmo_plugins_by_priority.erase(p_plugin);
  	gizmo_plugins_by_name.erase(p_plugin);
  	_update_gizmos_menu();
  }
  
  Node3DEditorPlugin::Node3DEditorPlugin(EditorNode *p_node) {
  
  	editor = p_node;
  	spatial_editor = memnew(Node3DEditor(p_node));
  	spatial_editor->set_v_size_flags(Control::SIZE_EXPAND_FILL);
  	editor->get_viewport()->add_child(spatial_editor);
  
  	spatial_editor->hide();
  	spatial_editor->connect_compat("transform_key_request", editor->get_inspector_dock(), "_transform_keyed");
  }
  
  Node3DEditorPlugin::~Node3DEditorPlugin() {
  }
  
  void EditorNode3DGizmoPlugin::create_material(const String &p_name, const Color &p_color, bool p_billboard, bool p_on_top, bool p_use_vertex_color) {
  
  	Color instanced_color = EDITOR_DEF("editors/3d_gizmos/gizmo_colors/instanced", Color(0.7, 0.7, 0.7, 0.6));
  
  	Vector<Ref<StandardMaterial3D>> mats;
  
  	for (int i = 0; i < 4; i++) {
  		bool selected = i % 2 == 1;
  		bool instanced = i < 2;
  
  		Ref<StandardMaterial3D> material = Ref<StandardMaterial3D>(memnew(StandardMaterial3D));
  
  		Color color = instanced ? instanced_color : p_color;
  
  		if (!selected) {
  			color.a *= 0.3;
  		}
  
  		material->set_albedo(color);
  		material->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  		material->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
  		material->set_render_priority(StandardMaterial3D::RENDER_PRIORITY_MIN + 1);
  
  		if (p_use_vertex_color) {
  			material->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
  			material->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
  		}
  
  		if (p_billboard) {
  			material->set_billboard_mode(StandardMaterial3D::BILLBOARD_ENABLED);
  		}
  
  		if (p_on_top && selected) {
  			material->set_on_top_of_alpha();
  		}
  
  		mats.push_back(material);
  	}
  
  	materials[p_name] = mats;
  }
  
  void EditorNode3DGizmoPlugin::create_icon_material(const String &p_name, const Ref<Texture2D> &p_texture, bool p_on_top, const Color &p_albedo) {
  
  	Color instanced_color = EDITOR_DEF("editors/3d_gizmos/gizmo_colors/instanced", Color(0.7, 0.7, 0.7, 0.6));
  
  	Vector<Ref<StandardMaterial3D>> icons;
  
  	for (int i = 0; i < 4; i++) {
  		bool selected = i % 2 == 1;
  		bool instanced = i < 2;
  
  		Ref<StandardMaterial3D> icon = Ref<StandardMaterial3D>(memnew(StandardMaterial3D));
  
  		Color color = instanced ? instanced_color : p_albedo;
  
  		if (!selected) {
  			color.a *= 0.85;
  		}
  
  		icon->set_albedo(color);
  
  		icon->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  		icon->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
  		icon->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
  		icon->set_cull_mode(StandardMaterial3D::CULL_DISABLED);
  		icon->set_depth_draw_mode(StandardMaterial3D::DEPTH_DRAW_DISABLED);
  		icon->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
  		icon->set_texture(StandardMaterial3D::TEXTURE_ALBEDO, p_texture);
  		icon->set_flag(StandardMaterial3D::FLAG_FIXED_SIZE, true);
  		icon->set_billboard_mode(StandardMaterial3D::BILLBOARD_ENABLED);
  		icon->set_render_priority(StandardMaterial3D::RENDER_PRIORITY_MIN);
  
  		if (p_on_top && selected) {
  			icon->set_on_top_of_alpha();
  		}
  
  		icons.push_back(icon);
  	}
  
  	materials[p_name] = icons;
  }
  
  void EditorNode3DGizmoPlugin::create_handle_material(const String &p_name, bool p_billboard) {
  	Ref<StandardMaterial3D> handle_material = Ref<StandardMaterial3D>(memnew(StandardMaterial3D));
  
  	handle_material->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
  	handle_material->set_flag(StandardMaterial3D::FLAG_USE_POINT_SIZE, true);
  	Ref<Texture2D> handle_t = Node3DEditor::get_singleton()->get_theme_icon("Editor3DHandle", "EditorIcons");
  	handle_material->set_point_size(handle_t->get_width());
  	handle_material->set_texture(StandardMaterial3D::TEXTURE_ALBEDO, handle_t);
  	handle_material->set_albedo(Color(1, 1, 1));
  	handle_material->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
  	handle_material->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
  	handle_material->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
  	handle_material->set_on_top_of_alpha();
  	if (p_billboard) {
  		handle_material->set_billboard_mode(StandardMaterial3D::BILLBOARD_ENABLED);
  		handle_material->set_on_top_of_alpha();
  	}
  
  	materials[p_name] = Vector<Ref<StandardMaterial3D>>();
  	materials[p_name].push_back(handle_material);
  }
  
  void EditorNode3DGizmoPlugin::add_material(const String &p_name, Ref<StandardMaterial3D> p_material) {
  	materials[p_name] = Vector<Ref<StandardMaterial3D>>();
  	materials[p_name].push_back(p_material);
  }
  
  Ref<StandardMaterial3D> EditorNode3DGizmoPlugin::get_material(const String &p_name, const Ref<EditorNode3DGizmo> &p_gizmo) {
  	ERR_FAIL_COND_V(!materials.has(p_name), Ref<StandardMaterial3D>());
  	ERR_FAIL_COND_V(materials[p_name].size() == 0, Ref<StandardMaterial3D>());
  
  	if (p_gizmo.is_null() || materials[p_name].size() == 1) return materials[p_name][0];
  
  	int index = (p_gizmo->is_selected() ? 1 : 0) + (p_gizmo->is_editable() ? 2 : 0);
  
  	Ref<StandardMaterial3D> mat = materials[p_name][index];
  
  	if (current_state == ON_TOP && p_gizmo->is_selected()) {
  		mat->set_flag(StandardMaterial3D::FLAG_DISABLE_DEPTH_TEST, true);
  	} else {
  		mat->set_flag(StandardMaterial3D::FLAG_DISABLE_DEPTH_TEST, false);
  	}
  
  	return mat;
  }
  
  String EditorNode3DGizmoPlugin::get_name() const {
  	if (get_script_instance() && get_script_instance()->has_method("get_name")) {
  		return get_script_instance()->call("get_name");
  	}
  	return TTR("Nameless gizmo");
  }
  
  int EditorNode3DGizmoPlugin::get_priority() const {
  	if (get_script_instance() && get_script_instance()->has_method("get_priority")) {
  		return get_script_instance()->call("get_priority");
  	}
  	return 0;
  }
  
  Ref<EditorNode3DGizmo> EditorNode3DGizmoPlugin::get_gizmo(Node3D *p_spatial) {
  
  	if (get_script_instance() && get_script_instance()->has_method("get_gizmo")) {
  		return get_script_instance()->call("get_gizmo", p_spatial);
  	}
  
  	Ref<EditorNode3DGizmo> ref = create_gizmo(p_spatial);
  
  	if (ref.is_null()) return ref;
  
  	ref->set_plugin(this);
  	ref->set_spatial_node(p_spatial);
  	ref->set_hidden(current_state == HIDDEN);
  
  	current_gizmos.push_back(ref.ptr());
  	return ref;
  }
  
  void EditorNode3DGizmoPlugin::_bind_methods() {
  #define GIZMO_REF PropertyInfo(Variant::OBJECT, "gizmo", PROPERTY_HINT_RESOURCE_TYPE, "EditorNode3DGizmo")
  
  	BIND_VMETHOD(MethodInfo(Variant::BOOL, "has_gizmo", PropertyInfo(Variant::OBJECT, "spatial", PROPERTY_HINT_RESOURCE_TYPE, "Node3D")));
  	BIND_VMETHOD(MethodInfo(GIZMO_REF, "create_gizmo", PropertyInfo(Variant::OBJECT, "spatial", PROPERTY_HINT_RESOURCE_TYPE, "Node3D")));
  
  	ClassDB::bind_method(D_METHOD("create_material", "name", "color", "billboard", "on_top", "use_vertex_color"), &EditorNode3DGizmoPlugin::create_material, DEFVAL(false), DEFVAL(false), DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("create_icon_material", "name", "texture", "on_top", "color"), &EditorNode3DGizmoPlugin::create_icon_material, DEFVAL(false), DEFVAL(Color(1, 1, 1, 1)));
  	ClassDB::bind_method(D_METHOD("create_handle_material", "name", "billboard"), &EditorNode3DGizmoPlugin::create_handle_material, DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("add_material", "name", "material"), &EditorNode3DGizmoPlugin::add_material);
  
  	ClassDB::bind_method(D_METHOD("get_material", "name", "gizmo"), &EditorNode3DGizmoPlugin::get_material); //, DEFVAL(Ref<EditorNode3DGizmo>()));
  
  	BIND_VMETHOD(MethodInfo(Variant::STRING, "get_name"));
  	BIND_VMETHOD(MethodInfo(Variant::STRING, "get_priority"));
  	BIND_VMETHOD(MethodInfo(Variant::BOOL, "can_be_hidden"));
  	BIND_VMETHOD(MethodInfo(Variant::BOOL, "is_selectable_when_hidden"));
  
  	BIND_VMETHOD(MethodInfo("redraw", GIZMO_REF));
  	BIND_VMETHOD(MethodInfo(Variant::STRING, "get_handle_name", GIZMO_REF, PropertyInfo(Variant::INT, "index")));
  
  	MethodInfo hvget(Variant::NIL, "get_handle_value", GIZMO_REF, PropertyInfo(Variant::INT, "index"));
  	hvget.return_val.usage |= PROPERTY_USAGE_NIL_IS_VARIANT;
  	BIND_VMETHOD(hvget);
  
  	BIND_VMETHOD(MethodInfo("set_handle", GIZMO_REF, PropertyInfo(Variant::INT, "index"), PropertyInfo(Variant::OBJECT, "camera", PROPERTY_HINT_RESOURCE_TYPE, "Camera3D"), PropertyInfo(Variant::VECTOR2, "point")));
  	MethodInfo cm = MethodInfo("commit_handle", GIZMO_REF, PropertyInfo(Variant::INT, "index"), PropertyInfo(Variant::NIL, "restore"), PropertyInfo(Variant::BOOL, "cancel"));
  	cm.default_arguments.push_back(false);
  	BIND_VMETHOD(cm);
  
  	BIND_VMETHOD(MethodInfo(Variant::BOOL, "is_handle_highlighted", GIZMO_REF, PropertyInfo(Variant::INT, "index")));
  
  #undef GIZMO_REF
  }
  
  bool EditorNode3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
  	if (get_script_instance() && get_script_instance()->has_method("has_gizmo")) {
  		return get_script_instance()->call("has_gizmo", p_spatial);
  	}
  	return false;
  }
  
  Ref<EditorNode3DGizmo> EditorNode3DGizmoPlugin::create_gizmo(Node3D *p_spatial) {
  
  	if (get_script_instance() && get_script_instance()->has_method("create_gizmo")) {
  		return get_script_instance()->call("create_gizmo", p_spatial);
  	}
  
  	Ref<EditorNode3DGizmo> ref;
  	if (has_gizmo(p_spatial)) ref.instance();
  	return ref;
  }
  
  bool EditorNode3DGizmoPlugin::can_be_hidden() const {
  	if (get_script_instance() && get_script_instance()->has_method("can_be_hidden")) {
  		return get_script_instance()->call("can_be_hidden");
  	}
  	return true;
  }
  
  bool EditorNode3DGizmoPlugin::is_selectable_when_hidden() const {
  	if (get_script_instance() && get_script_instance()->has_method("is_selectable_when_hidden")) {
  		return get_script_instance()->call("is_selectable_when_hidden");
  	}
  	return false;
  }
  
  void EditorNode3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
  	if (get_script_instance() && get_script_instance()->has_method("redraw")) {
  		Ref<EditorNode3DGizmo> ref(p_gizmo);
  		get_script_instance()->call("redraw", ref);
  	}
  }
  
  String EditorNode3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_idx) const {
  	if (get_script_instance() && get_script_instance()->has_method("get_handle_name")) {
  		return get_script_instance()->call("get_handle_name", p_gizmo, p_idx);
  	}
  	return "";
  }
  
  Variant EditorNode3DGizmoPlugin::get_handle_value(EditorNode3DGizmo *p_gizmo, int p_idx) const {
  	if (get_script_instance() && get_script_instance()->has_method("get_handle_value")) {
  		return get_script_instance()->call("get_handle_value", p_gizmo, p_idx);
  	}
  	return Variant();
  }
  
  void EditorNode3DGizmoPlugin::set_handle(EditorNode3DGizmo *p_gizmo, int p_idx, Camera3D *p_camera, const Point2 &p_point) {
  	if (get_script_instance() && get_script_instance()->has_method("set_handle")) {
  		get_script_instance()->call("set_handle", p_gizmo, p_idx, p_camera, p_point);
  	}
  }
  
  void EditorNode3DGizmoPlugin::commit_handle(EditorNode3DGizmo *p_gizmo, int p_idx, const Variant &p_restore, bool p_cancel) {
  	if (get_script_instance() && get_script_instance()->has_method("commit_handle")) {
  		get_script_instance()->call("commit_handle", p_gizmo, p_idx, p_restore, p_cancel);
  	}
  }
  
  bool EditorNode3DGizmoPlugin::is_handle_highlighted(const EditorNode3DGizmo *p_gizmo, int p_idx) const {
  	if (get_script_instance() && get_script_instance()->has_method("is_handle_highlighted")) {
  		return get_script_instance()->call("is_handle_highlighted", p_gizmo, p_idx);
  	}
  	return false;
  }
  
  void EditorNode3DGizmoPlugin::set_state(int p_state) {
  	current_state = p_state;
  	for (int i = 0; i < current_gizmos.size(); ++i) {
  		current_gizmos[i]->set_hidden(current_state == HIDDEN);
  	}
  }
  
  int EditorNode3DGizmoPlugin::get_state() const {
  	return current_state;
  }
  
  void EditorNode3DGizmoPlugin::unregister_gizmo(EditorNode3DGizmo *p_gizmo) {
  	current_gizmos.erase(p_gizmo);
  }
  
  EditorNode3DGizmoPlugin::EditorNode3DGizmoPlugin() {
  	current_state = VISIBLE;
  }
  
  EditorNode3DGizmoPlugin::~EditorNode3DGizmoPlugin() {
  	for (int i = 0; i < current_gizmos.size(); ++i) {
  		current_gizmos[i]->set_plugin(NULL);
  		current_gizmos[i]->get_spatial_node()->set_gizmo(NULL);
  	}
  	if (Node3DEditor::get_singleton()) {
  		Node3DEditor::get_singleton()->update_all_gizmos();
  	}
  }
  