text: /*************************************************************************/
  /*  navigation_polygon.h                                                 */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2021 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  */
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  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #ifndef NAVIGATION_POLYGON_H
  #define NAVIGATION_POLYGON_H
  
  #include "scene/2d/node_2d.h"
  
  class NavigationPolygon : public Resource {
  
  	GDCLASS(NavigationPolygon, Resource);
  
  	PoolVector<Vector2> vertices;
  	struct Polygon {
  		Vector<int> indices;
  	};
  	Vector<Polygon> polygons;
  	Vector<PoolVector<Vector2> > outlines;
  
  	mutable Rect2 item_rect;
  	mutable bool rect_cache_dirty;
  
  protected:
  	static void _bind_methods();
  
  	void _set_polygons(const Array &p_array);
  	Array _get_polygons() const;
  
  	void _set_outlines(const Array &p_array);
  	Array _get_outlines() const;
  
  public:
  #ifdef TOOLS_ENABLED
  	Rect2 _edit_get_rect() const;
  	bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const;
  #endif
  
  	void set_vertices(const PoolVector<Vector2> &p_vertices);
  	PoolVector<Vector2> get_vertices() const;
  
  	void add_polygon(const Vector<int> &p_polygon);
  	int get_polygon_count() const;
  
  	void add_outline(const PoolVector<Vector2> &p_outline);
  	void add_outline_at_index(const PoolVector<Vector2> &p_outline, int p_index);
  	void set_outline(int p_idx, const PoolVector<Vector2> &p_outline);
  	PoolVector<Vector2> get_outline(int p_idx) const;
  	void remove_outline(int p_idx);
  	int get_outline_count() const;
  
  	void clear_outlines();
  	void make_polygons_from_outlines();
  
  	Vector<int> get_polygon(int p_idx);
  	void clear_polygons();
  
  	NavigationPolygon();
  };
  
  class Navigation2D;
  
  class NavigationPolygonInstance : public Node2D {
  
  	GDCLASS(NavigationPolygonInstance, Node2D);
  
  	bool enabled;
  	int nav_id;
  	Navigation2D *navigation;
  	Ref<NavigationPolygon> navpoly;
  
  	void _navpoly_changed();
  
  protected:
  	void _notification(int p_what);
  	static void _bind_methods();
  
  public:
  #ifdef TOOLS_ENABLED
  	virtual Rect2 _edit_get_rect() const;
  	virtual bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const;
  #endif
  
  	void set_enabled(bool p_enabled);
  	bool is_enabled() const;
  
  	void set_navigation_polygon(const Ref<NavigationPolygon> &p_navpoly);
  	Ref<NavigationPolygon> get_navigation_polygon() const;
  
  	String get_configuration_warning() const;
  
  	NavigationPolygonInstance();
  };
  
  #endif // NAVIGATIONPOLYGON_H
  