text: /*************************************************************************/
  /*  collision_polygon_editor_plugin.cpp                                  */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                    http://www.godotengine.org                         */
  /*************************************************************************/
  /* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur.                 */
  /*                                                                       */
  /* 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 "polygon_2d_editor_plugin.h"
  #include "canvas_item_editor_plugin.h"
  #include "os/file_access.h"
  #include "tools/editor/editor_settings.h"
  #include "os/keyboard.h"
  #include "os/input.h"
  
  void Polygon2DEditor::_notification(int p_what) {
  
  	switch(p_what) {
  
  		case NOTIFICATION_READY: {
  
  			button_create->set_icon( get_icon("Edit","EditorIcons"));
  			button_edit->set_icon( get_icon("MovePoint","EditorIcons"));
  			button_edit->set_pressed(true);
  			button_uv->set_icon( get_icon("Uv","EditorIcons"));
  
  			uv_button[UV_MODE_EDIT_POINT]->set_icon(get_icon("ToolSelect","EditorIcons"));
  			uv_button[UV_MODE_MOVE]->set_icon(get_icon("ToolMove","EditorIcons"));
  			uv_button[UV_MODE_ROTATE]->set_icon(get_icon("ToolRotate","EditorIcons"));
  			uv_button[UV_MODE_SCALE]->set_icon(get_icon("ToolScale","EditorIcons"));
  
  
  		} break;
  		case NOTIFICATION_FIXED_PROCESS: {
  
  
  		} break;
  	}
  
  }
  void Polygon2DEditor::_node_removed(Node *p_node) {
  
  	if(p_node==node) {
  		node=NULL;
  		hide();
  	}
  
  }
  
  
  void Polygon2DEditor::_menu_option(int p_option) {
  
  	switch(p_option) {
  
  		case MODE_CREATE: {
  
  			mode=MODE_CREATE;
  			button_create->set_pressed(true);
  			button_edit->set_pressed(false);
  		} break;
  		case MODE_EDIT: {
  
  			mode=MODE_EDIT;
  			button_create->set_pressed(false);
  			button_edit->set_pressed(true);
  		} break;
  		case MODE_EDIT_UV: {
  
  			if (node->get_texture().is_null()) {
  
  				error->set_text("No texture in this polygon.\nSet a texture to be able to edit UV.");
  				error->popup_centered_minsize();
  				return;
  			}
  
  
  			DVector<Vector2> points = node->get_polygon();
  			DVector<Vector2> uvs = node->get_uv();
  			if (uvs.size()!=points.size()) {
  				undo_redo->create_action("Create UV Map");
  				undo_redo->add_do_method(node,"set_uv",points);
  				undo_redo->add_undo_method(node,"set_uv",uvs);
  				undo_redo->add_do_method(uv_edit_draw,"update");
  				undo_redo->add_undo_method(uv_edit_draw,"update");
  				undo_redo->commit_action();
  
  			}
  
  
  			uv_edit->popup_centered_ratio(0.85);
  		} break;
  		case UVEDIT_POLYGON_TO_UV: {
  
  			DVector<Vector2> points = node->get_polygon();
  			if (points.size()==0)
  				break;
  			DVector<Vector2> uvs = node->get_uv();
  			undo_redo->create_action("Create UV Map");
  			undo_redo->add_do_method(node,"set_uv",points);
  			undo_redo->add_undo_method(node,"set_uv",uvs);
  			undo_redo->add_do_method(uv_edit_draw,"update");
  			undo_redo->add_undo_method(uv_edit_draw,"update");
  			undo_redo->commit_action();
  
  
  		} break;
  		case UVEDIT_UV_TO_POLYGON: {
  
  			DVector<Vector2> points = node->get_polygon();
  			DVector<Vector2> uvs = node->get_uv();
  			if (uvs.size()==0)
  				break;
  
  			undo_redo->create_action("Create UV Map");
  			undo_redo->add_do_method(node,"set_polygon",uvs);
  			undo_redo->add_undo_method(node,"set_polygon",points);
  			undo_redo->add_do_method(uv_edit_draw,"update");
  			undo_redo->add_undo_method(uv_edit_draw,"update");
  			undo_redo->commit_action();
  
  		} break;
  		case UVEDIT_UV_CLEAR: {
  
  			DVector<Vector2> uvs = node->get_uv();
  			if (uvs.size()==0)
  				break;
  			undo_redo->create_action("Create UV Map");
  			undo_redo->add_do_method(node,"set_uv",DVector<Vector2>());
  			undo_redo->add_undo_method(node,"set_uv",uvs);
  			undo_redo->add_do_method(uv_edit_draw,"update");
  			undo_redo->add_undo_method(uv_edit_draw,"update");
  			undo_redo->commit_action();
  
  		} break;
  
  
  	}
  }
  
  void Polygon2DEditor::_wip_close() {
  
  	undo_redo->create_action("Create Poly");
  	undo_redo->add_undo_method(node,"set_polygon",node->get_polygon());
  	undo_redo->add_do_method(node,"set_polygon",wip);
  	undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
  	undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
  	undo_redo->commit_action();
  	wip.clear();
  	wip_active=false;
  	mode=MODE_EDIT;
  	button_edit->set_pressed(true);
  	button_create->set_pressed(false);
  	edited_point=-1;
  }
  
  bool Polygon2DEditor::forward_input_event(const InputEvent& p_event) {
  
  	if (node==NULL)
  		return false;
  
  	switch(p_event.type) {
  
  		case InputEvent::MOUSE_BUTTON: {
  
  			const InputEventMouseButton &mb=p_event.mouse_button;
  
  			Matrix32 xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
  
  
  			Vector2 gpoint = Point2(mb.x,mb.y);
  			Vector2 cpoint = canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint);
  			cpoint=canvas_item_editor->snap_point(cpoint);
  			cpoint = node->get_global_transform().affine_inverse().xform(cpoint);
  
  
  			Vector<Vector2> poly = Variant(node->get_polygon());
  
  			//first check if a point is to be added (segment split)
  			real_t grab_treshold=EDITOR_DEF("poly_editor/point_grab_radius",8);
  
  			switch(mode) {
  
  
  				case MODE_CREATE: {
  
  					if (mb.button_index==BUTTON_LEFT && mb.pressed) {
  
  
  						if (!wip_active) {
  
  							wip.clear();
  							wip.push_back( cpoint-node->get_offset() );
  							wip_active=true;
  							edited_point_pos=cpoint;
  							canvas_item_editor->get_viewport_control()->update();
  							edited_point=1;
  							return true;
  						} else {
  
  
  							if (wip.size()>1 && xform.xform(wip[0]+node->get_offset()).distance_to(gpoint)<grab_treshold) {
  								//wip closed
  								_wip_close();
  
  								return true;
  							} else {
  
  								wip.push_back( cpoint-node->get_offset() );
  								edited_point=wip.size();
  								canvas_item_editor->get_viewport_control()->update();
  								return true;
  
  								//add wip point
  							}
  						}
  					} else if (mb.button_index==BUTTON_RIGHT && mb.pressed && wip_active) {
  						_wip_close();
  					}
  
  
  
  				} break;
  
  				case MODE_EDIT: {
  
  					if (mb.button_index==BUTTON_LEFT) {
  						if (mb.pressed) {
  
  							if (mb.mod.control) {
  
  
  								if (poly.size() < 3) {
  
  									undo_redo->create_action("Edit Poly");
  									undo_redo->add_undo_method(node,"set_polygon",poly);
  									poly.push_back(cpoint);
  									undo_redo->add_do_method(node,"set_polygon",poly);
  									undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
  									undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
  									undo_redo->commit_action();
  									return true;
  								}
  
  								//search edges
  								int closest_idx=-1;
  								Vector2 closest_pos;
  								real_t closest_dist=1e10;
  								for(int i=0;i<poly.size();i++) {
  
  									Vector2 points[2] ={ xform.xform(poly[i]+node->get_offset()),
  										xform.xform(poly[(i+1)%poly.size()]+node->get_offset()) };
  
  									Vector2 cp = Geometry::get_closest_point_to_segment_2d(gpoint,points);
  									if (cp.distance_squared_to(points[0])<CMP_EPSILON2 || cp.distance_squared_to(points[1])<CMP_EPSILON2)
  										continue; //not valid to reuse point
  
  									real_t d = cp.distance_to(gpoint);
  									if (d<closest_dist && d<grab_treshold) {
  										closest_dist=d;
  										closest_pos=cp;
  										closest_idx=i;
  									}
  
  
  								}
  
  								if (closest_idx>=0) {
  
  									pre_move_edit=poly;
  									poly.insert(closest_idx+1,xform.affine_inverse().xform(closest_pos)-node->get_offset());
  									edited_point=closest_idx+1;
  									edited_point_pos=xform.affine_inverse().xform(closest_pos);
  									node->set_polygon(Variant(poly));
  									canvas_item_editor->get_viewport_control()->update();
  									return true;
  								}
  							} else {
  
  								//look for points to move
  
  								int closest_idx=-1;
  								Vector2 closest_pos;
  								real_t closest_dist=1e10;
  								for(int i=0;i<poly.size();i++) {
  
  									Vector2 cp =xform.xform(poly[i]+node->get_offset());
  
  									real_t d = cp.distance_to(gpoint);
  									if (d<closest_dist && d<grab_treshold) {
  										closest_dist=d;
  										closest_pos=cp;
  										closest_idx=i;
  									}
  
  								}
  
  								if (closest_idx>=0) {
  
  									pre_move_edit=poly;
  									edited_point=closest_idx;
  									edited_point_pos=xform.affine_inverse().xform(closest_pos);
  									canvas_item_editor->get_viewport_control()->update();
  									return true;
  								}
  							}
  						} else {
  
  							if (edited_point!=-1) {
  
  								//apply
  
  								ERR_FAIL_INDEX_V(edited_point,poly.size(),false);
  								poly[edited_point]=edited_point_pos-node->get_offset();
  								undo_redo->create_action("Edit Poly");
  								undo_redo->add_do_method(node,"set_polygon",poly);
  								undo_redo->add_undo_method(node,"set_polygon",pre_move_edit);
  								undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
  								undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
  								undo_redo->commit_action();
  
  								edited_point=-1;
  								return true;
  							}
  						}
  					} if (mb.button_index==BUTTON_RIGHT && mb.pressed && edited_point==-1) {
  
  
  
  						int closest_idx=-1;
  						Vector2 closest_pos;
  						real_t closest_dist=1e10;
  						for(int i=0;i<poly.size();i++) {
  
  							Vector2 cp =xform.xform(poly[i]+node->get_offset());
  
  							real_t d = cp.distance_to(gpoint);
  							if (d<closest_dist && d<grab_treshold) {
  								closest_dist=d;
  								closest_pos=cp;
  								closest_idx=i;
  							}
  
  						}
  
  						if (closest_idx>=0) {
  
  
  							undo_redo->create_action("Edit Poly (Remove Point)");
  							undo_redo->add_undo_method(node,"set_polygon",poly);
  							poly.remove(closest_idx);
  							undo_redo->add_do_method(node,"set_polygon",poly);
  							undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
  							undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
  							undo_redo->commit_action();
  							return true;
  						}
  
  					}
  
  
  
  				} break;
  			}
  
  
  
  		} break;
  		case InputEvent::MOUSE_MOTION: {
  
  			const InputEventMouseMotion &mm=p_event.mouse_motion;
  
  			if (edited_point!=-1 && (wip_active || mm.button_mask&BUTTON_MASK_LEFT)) {
  
  				Vector2 gpoint = Point2(mm.x,mm.y);
  				Vector2 cpoint = canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint);
  				cpoint=canvas_item_editor->snap_point(cpoint);
  				edited_point_pos = node->get_global_transform().affine_inverse().xform(cpoint);
  
  				canvas_item_editor->get_viewport_control()->update();
  
  			}
  
  		} break;
  	}
  
  	return false;
  }
  void Polygon2DEditor::_canvas_draw() {
  
  	if (!node)
  		return;
  
  	Control *vpc = canvas_item_editor->get_viewport_control();
  
  	Vector<Vector2> poly;
  
  	if (wip_active)
  		poly=wip;
  	else
  		poly=Variant(node->get_polygon());
  
  
  	Matrix32 xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
  	Ref<Texture> handle= get_icon("EditorHandle","EditorIcons");
  
  	int len = poly.size();
  
  	for(int i=0;i<poly.size();i++) {
  
  
  		Vector2 p,p2;
  		p = i==edited_point ? edited_point_pos : (poly[i]+node->get_offset());
  		if ((wip_active && i==poly.size()-1) || (((i+1)%poly.size())==edited_point))
  			p2=edited_point_pos;
  		else
  			p2 = poly[(i+1)%poly.size()]+node->get_offset();
  
  		Vector2 point = xform.xform(p);
  		Vector2 next_point = xform.xform(p2);
  
  		Color col=Color(1,0.3,0.1,0.8);
  		vpc->draw_line(point,next_point,col,2);
  		vpc->draw_texture(handle,point-handle->get_size()*0.5);
  	}
  }
  
  
  void Polygon2DEditor::_uv_mode(int p_mode) {
  
  
  	uv_mode=UVMode(p_mode);
  	for(int i=0;i<UV_MODE_MAX;i++) {
  		uv_button[i]->set_pressed(p_mode==i);
  	}
  }
  
  
  void Polygon2DEditor::_uv_input(const InputEvent& p_input) {
  
  
  	Matrix32 mtx;
  	mtx.elements[2]=-uv_draw_ofs;
  	mtx.scale_basis(Vector2(uv_draw_zoom,uv_draw_zoom));
  
  	if (p_input.type==InputEvent::MOUSE_BUTTON) {
  
  
  		const InputEventMouseButton &mb=p_input.mouse_button;
  
  		if (mb.button_index==BUTTON_LEFT) {
  
  
  			if (mb.pressed) {
  
  				uv_drag_from=Vector2(mb.x,mb.y);
  				uv_drag=true;
  				uv_prev=node->get_uv();
  				uv_move_current=uv_mode;
  				if (uv_move_current==UV_MODE_EDIT_POINT) {
  
  					if (mb.mod.shift && mb.mod.command)
  						uv_move_current=UV_MODE_SCALE;
  					else if (mb.mod.shift)
  						uv_move_current=UV_MODE_MOVE;
  					else if (mb.mod.command)
  						uv_move_current=UV_MODE_ROTATE;
  				}
  
  				if (uv_move_current==UV_MODE_EDIT_POINT) {
  
  					uv_drag_index=-1;
  					for(int i=0;i<uv_prev.size();i++) {
  
  						Vector2 tuv=mtx.xform(uv_prev[i]);
  						if (tuv.distance_to(Vector2(mb.x,mb.y))<8) {
  
  							uv_drag_index=i;
  						}
  					}
  
  					if (uv_drag_index==-1) {
  						uv_drag=false;
  					}
  
  				}
  			} else if (uv_drag) {
  
  				undo_redo->create_action("Transform UV Map");
  				undo_redo->add_do_method(node,"set_uv",node->get_uv());
  				undo_redo->add_undo_method(node,"set_uv",uv_prev);
  				undo_redo->add_do_method(uv_edit_draw,"update");
  				undo_redo->add_undo_method(uv_edit_draw,"update");
  				undo_redo->commit_action();
  
  				uv_drag=false;
  			}
  
  		} else if (mb.button_index==BUTTON_RIGHT && mb.pressed) {
  
  			if (uv_drag) {
  
  				uv_drag=false;
  				node->set_uv(uv_prev);
  				uv_edit_draw->update();
  			}
  
  		} else if (mb.button_index==BUTTON_WHEEL_UP && mb.pressed) {
  
  			uv_zoom->set_val( uv_zoom->get_val()/0.9 );
  		} else if (mb.button_index==BUTTON_WHEEL_DOWN && mb.pressed) {
  
  			uv_zoom->set_val( uv_zoom->get_val()*0.9);
  		}
  
  	} else if (p_input.type==InputEvent::MOUSE_MOTION) {
  
  		const InputEventMouseMotion &mm=p_input.mouse_motion;
  
  		if (mm.button_mask&BUTTON_MASK_MIDDLE || Input::get_singleton()->is_key_pressed(KEY_SPACE)) {
  
  			Vector2 drag(mm.relative_x,mm.relative_y);
  			uv_hscroll->set_val( uv_hscroll->get_val()-drag.x );
  			uv_vscroll->set_val( uv_vscroll->get_val()-drag.y );
  
  		} else if (uv_drag) {
  
  			Vector2 uv_drag_to(mm.x,mm.y);
  			Vector2 drag = mtx.affine_inverse().xform(uv_drag_to) - mtx.affine_inverse().xform(uv_drag_from);
  
  
  			switch(uv_move_current) {
  
  				case UV_MODE_EDIT_POINT: {
  
  					DVector<Vector2> uv_new=uv_prev;
  					uv_new.set( uv_drag_index, uv_new[uv_drag_index]+drag );
  					node->set_uv(uv_new);
  				} break;
  				case UV_MODE_MOVE: {
  
  					DVector<Vector2> uv_new=uv_prev;
  					for(int i=0;i<uv_new.size();i++)
  						uv_new.set( i, uv_new[i]+drag );
  
  					node->set_uv(uv_new);
  
  
  				} break;
  				case UV_MODE_ROTATE: {
  
  					Vector2 center;
  					DVector<Vector2> uv_new=uv_prev;
  
  					for(int i=0;i<uv_new.size();i++)
  						center+=uv_prev[i];
  					center/=uv_new.size();
  
  					float angle = (uv_drag_from - mtx.xform(center)).normalized().angle_to( (uv_drag_to - mtx.xform(center)).normalized() );
  
  					for(int i=0;i<uv_new.size();i++) {
  						Vector2 rel = uv_prev[i] - center;
  						rel=rel.rotated(angle);
  						uv_new.set(i,center+rel);
  					}
  
  					node->set_uv(uv_new);
  
  				} break;
  				case UV_MODE_SCALE: {
  
  					Vector2 center;
  					DVector<Vector2> uv_new=uv_prev;
  
  					for(int i=0;i<uv_new.size();i++)
  						center+=uv_prev[i];
  					center/=uv_new.size();
  
  					float from_dist = uv_drag_from.distance_to(mtx.xform(center));
  					float to_dist = uv_drag_to.distance_to(mtx.xform(center));
  					if (from_dist<2)
  						break;
  
  					float scale = to_dist/from_dist;
  
  
  					for(int i=0;i<uv_new.size();i++) {
  						Vector2 rel = uv_prev[i] - center;
  						rel=rel*scale;
  						uv_new.set(i,center+rel);
  					}
  
  					node->set_uv(uv_new);
  				} break;
  
  
  			}
  			uv_edit_draw->update();
  		}
  
  	}
  
  }
  
  
  void Polygon2DEditor::_uv_scroll_changed(float) {
  
  	if (updating_uv_scroll)
  		return;
  
  	uv_draw_ofs.x=uv_hscroll->get_val();
  	uv_draw_ofs.y=uv_vscroll->get_val();
  	uv_draw_zoom=uv_zoom->get_val();
  	uv_edit_draw->update();
  }
  
  void Polygon2DEditor::_uv_draw() {
  
  	Ref<Texture> base_tex = node->get_texture();
  	if (base_tex.is_null())
  		return;
  
  	Matrix32 mtx;
  	mtx.elements[2]=-uv_draw_ofs;
  	mtx.scale_basis(Vector2(uv_draw_zoom,uv_draw_zoom));
  
  	VS::get_singleton()->canvas_item_set_clip(uv_edit_draw->get_canvas_item(),true);
  	VS::get_singleton()->canvas_item_add_set_transform(uv_edit_draw->get_canvas_item(),mtx);
  	uv_edit_draw->draw_texture(base_tex,Point2());
  	VS::get_singleton()->canvas_item_add_set_transform(uv_edit_draw->get_canvas_item(),Matrix32());
  
  	DVector<Vector2> uvs = node->get_uv();
  	Ref<Texture> handle = get_icon("EditorHandle","EditorIcons");
  
  	Rect2 rect(Point2(),mtx.basis_xform(base_tex->get_size()));
  	rect.expand_to(mtx.basis_xform(uv_edit_draw->get_size()));
  
  	for(int i=0;i<uvs.size();i++) {
  
  		int next = (i+1)%uvs.size();
  		uv_edit_draw->draw_line(mtx.xform(uvs[i]),mtx.xform(uvs[next]),Color(0.9,0.5,0.5),2);
  		uv_edit_draw->draw_texture(handle,mtx.xform(uvs[i])-handle->get_size()*0.5);
  		rect.expand_to(mtx.basis_xform(uvs[i]));
  	}
  
  	rect=rect.grow(200);
  	updating_uv_scroll=true;
  	uv_hscroll->set_min(rect.pos.x);
  	uv_hscroll->set_max(rect.pos.x+rect.size.x);
  	uv_hscroll->set_page(uv_edit_draw->get_size().x);
  	uv_hscroll->set_val(uv_draw_ofs.x);
  	uv_hscroll->set_step(0.001);
  
  	uv_vscroll->set_min(rect.pos.y);
  	uv_vscroll->set_max(rect.pos.y+rect.size.y);
  	uv_vscroll->set_page(uv_edit_draw->get_size().y);
  	uv_vscroll->set_val(uv_draw_ofs.y);
  	uv_vscroll->set_step(0.001);
  	updating_uv_scroll=false;
  
  }
  
  void Polygon2DEditor::edit(Node *p_collision_polygon) {
  
  	if (!canvas_item_editor) {
  		canvas_item_editor=CanvasItemEditor::get_singleton();
  	}
  
  
  	if (p_collision_polygon) {
  
  		node=p_collision_polygon->cast_to<Polygon2D>();
  		if (!canvas_item_editor->get_viewport_control()->is_connected("draw",this,"_canvas_draw"))
  			canvas_item_editor->get_viewport_control()->connect("draw",this,"_canvas_draw");
  		node->connect("exit_tree",this,"_node_removed",varray(),CONNECT_ONESHOT);
  		wip.clear();
  		wip_active=false;
  		edited_point=-1;
  
  	} else {
  
  		if (node)
  			node->disconnect("exit_tree",this,"_node_removed");
  
  		node=NULL;
  
  		if (canvas_item_editor->get_viewport_control()->is_connected("draw",this,"_canvas_draw"))
  			canvas_item_editor->get_viewport_control()->disconnect("draw",this,"_canvas_draw");
  
  	}
  
  }
  
  void Polygon2DEditor::_bind_methods() {
  
  	ObjectTypeDB::bind_method(_MD("_menu_option"),&Polygon2DEditor::_menu_option);
  	ObjectTypeDB::bind_method(_MD("_canvas_draw"),&Polygon2DEditor::_canvas_draw);
  	ObjectTypeDB::bind_method(_MD("_uv_mode"),&Polygon2DEditor::_uv_mode);
  	ObjectTypeDB::bind_method(_MD("_uv_draw"),&Polygon2DEditor::_uv_draw);
  	ObjectTypeDB::bind_method(_MD("_uv_input"),&Polygon2DEditor::_uv_input);
  	ObjectTypeDB::bind_method(_MD("_uv_scroll_changed"),&Polygon2DEditor::_uv_scroll_changed);
  	ObjectTypeDB::bind_method(_MD("_node_removed"),&Polygon2DEditor::_node_removed);
  
  
  }
  
  Polygon2DEditor::Polygon2DEditor(EditorNode *p_editor) {
  
  	node=NULL;
  	canvas_item_editor=NULL;
  	editor=p_editor;
  	undo_redo = editor->get_undo_redo();
  
  	add_child( memnew( VSeparator ));
  	button_create = memnew( ToolButton );
  	add_child(button_create);
  	button_create->connect("pressed",this,"_menu_option",varray(MODE_CREATE));
  	button_create->set_toggle_mode(true);
  
  	button_edit = memnew( ToolButton );
  	add_child(button_edit);
  	button_edit->connect("pressed",this,"_menu_option",varray(MODE_EDIT));
  	button_edit->set_toggle_mode(true);
  
  	button_uv = memnew( ToolButton );
  	add_child(button_uv);
  	button_uv->connect("pressed",this,"_menu_option",varray(MODE_EDIT_UV));
  
  	//add_constant_override("separation",0);
  
  #if 0
  	options = memnew( MenuButton );
  	add_child(options);
  	options->set_area_as_parent_rect();
  	options->set_text("Polygon");
  	//options->get_popup()->add_item("Parse BBCODE",PARSE_BBCODE);
  	options->get_popup()->connect("item_pressed", this,"_menu_option");
  #endif
  
  	mode = MODE_EDIT;
  	wip_active=false;
  
  	uv_mode=UV_MODE_EDIT_POINT;
  	uv_edit = memnew( AcceptDialog );
  	add_child(uv_edit);
  	uv_edit->set_title("Polygon 2D UV Editor");
  	uv_edit->set_self_opacity(0.9);
  
  	VBoxContainer *uv_main_vb = memnew( VBoxContainer );
  	uv_edit->add_child(uv_main_vb);
  	uv_edit->set_child_rect(uv_main_vb);
  	HBoxContainer *uv_mode_hb = memnew( HBoxContainer );
  	uv_main_vb->add_child(uv_mode_hb);
  	for(int i=0;i<UV_MODE_MAX;i++) {
  
  		uv_button[i]=memnew( ToolButton );
  		uv_button[i]->set_toggle_mode(true);
  		uv_mode_hb->add_child(uv_button[i]);
  		uv_button[i]->connect("pressed",this,"_uv_mode",varray(i));
  		uv_button[i]->set_focus_mode(FOCUS_NONE);
  	}
  
  	uv_button[0]->set_tooltip("Move Point\nCtrl: Rotate\nShift: Move All\n:Shift+Ctrl: Scale");
  	uv_button[1]->set_tooltip("Move Polygon");
  	uv_button[2]->set_tooltip("Rotate Polygon");
  	uv_button[3]->set_tooltip("Scale Polygon");
  
  	uv_button[0]->set_pressed(true);
  	HBoxContainer *uv_main_hb = memnew( HBoxContainer );
  	uv_main_vb->add_child(uv_main_hb);
  	uv_edit_draw = memnew( Control );
  	uv_main_hb->add_child(uv_edit_draw);
  	uv_main_hb->set_v_size_flags(SIZE_EXPAND_FILL);
  	uv_edit_draw->set_h_size_flags(SIZE_EXPAND_FILL);
  	uv_menu = memnew( MenuButton );
  	uv_mode_hb->add_child(uv_menu);
  	uv_menu->set_text("Edit");
  	uv_menu->get_popup()->add_item("Polygon->UV",UVEDIT_POLYGON_TO_UV);
  	uv_menu->get_popup()->add_item("UV->Polygon",UVEDIT_UV_TO_POLYGON);
  	uv_menu->get_popup()->add_separator();
  	uv_menu->get_popup()->add_item("Clear UV",UVEDIT_UV_CLEAR);
  	uv_menu->get_popup()->connect("item_pressed",this,"_menu_option");
  	uv_mode_hb->add_child( memnew( VSeparator ));
  	uv_icon_zoom = memnew( TextureFrame );
  	uv_main_hb->add_child( uv_icon_zoom );
  	uv_zoom = memnew( HSlider );
  	uv_zoom->set_min(0.01);
  	uv_zoom->set_max(4);
  	uv_zoom->set_val(1);
  	uv_zoom->set_step(0.01);
  	uv_mode_hb->add_child(uv_zoom);
  	uv_zoom->set_custom_minimum_size(Size2(200,0));
  	uv_zoom_value = memnew( SpinBox );
  	uv_zoom->share(uv_zoom_value);
  	uv_zoom_value->set_custom_minimum_size(Size2(50,0));
  	uv_mode_hb->add_child(uv_zoom_value);
  	uv_zoom->connect("value_changed",this,"_uv_scroll_changed");
  
  
  
  	uv_vscroll = memnew( VScrollBar);
  	uv_main_hb->add_child(uv_vscroll);
  	uv_vscroll->connect("value_changed",this,"_uv_scroll_changed");
  	uv_hscroll = memnew( HScrollBar );
  	uv_main_vb->add_child(uv_hscroll);
  	uv_hscroll->connect("value_changed",this,"_uv_scroll_changed");
  
  	uv_edit_draw->connect("draw",this,"_uv_draw");
  	uv_edit_draw->connect("input_event",this,"_uv_input");
  	uv_draw_zoom=1.0;
  	uv_drag_index=-1;
  	uv_drag=false;
  	updating_uv_scroll=false;
  
  	error = memnew( AcceptDialog);
  	add_child(error);
  
  }
  
  
  void Polygon2DEditorPlugin::edit(Object *p_object) {
  
  
  	collision_polygon_editor->edit(p_object->cast_to<Node>());
  }
  
  bool Polygon2DEditorPlugin::handles(Object *p_object) const {
  
  	return p_object->is_type("Polygon2D");
  }
  
  void Polygon2DEditorPlugin::make_visible(bool p_visible) {
  
  	if (p_visible) {
  		collision_polygon_editor->show();
  	} else {
  
  		collision_polygon_editor->hide();
  		collision_polygon_editor->edit(NULL);
  	}
  
  }
  
  Polygon2DEditorPlugin::Polygon2DEditorPlugin(EditorNode *p_node) {
  
  	editor=p_node;
  	collision_polygon_editor = memnew( Polygon2DEditor(p_node) );
  	CanvasItemEditor::get_singleton()->add_control_to_menu_panel(collision_polygon_editor);
  
  	collision_polygon_editor->hide();
  
  }
  
  
  Polygon2DEditorPlugin::~Polygon2DEditorPlugin()
  {
  }
  
  