#ifndef CONCAVE_POLYGON_SHAPE_H
#define CONCAVE_POLYGON_SHAPE_H

/*************************************************************************/
/*  concave_polygon_shape.h                                              */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 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 "scene/resources/shapes/shape.h"

class ConcavePolygonShape : public Shape {
	GDCLASS(ConcavePolygonShape, Shape);

	struct DrawEdge {
		Vector3 a;
		Vector3 b;
		bool operator<(const DrawEdge &p_edge) const {
			if (a == p_edge.a) {
				return b < p_edge.b;
			} else {
				return a < p_edge.a;
			}
		}

		DrawEdge(const Vector3 &p_a = Vector3(), const Vector3 &p_b = Vector3()) {
			a = p_a;
			b = p_b;
			if (a < b) {
				SWAP(a, b);
			}
		}
	};

protected:
	static void _bind_methods();

	virtual void _update_shape();

public:
	void set_faces(const PoolVector<Vector3> &p_faces);
	PoolVector<Vector3> get_faces() const;

	Vector<Vector3> get_debug_mesh_lines();
	virtual real_t get_enclosing_radius() const;

	ConcavePolygonShape();
};

#endif // CONCAVE_POLYGON_SHAPE_H