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/*
   model/collisionmesh.h
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#ifndef __INCLUDED_MODEL_COLLISIONMESH_H__
#define __INCLUDED_MODEL_COLLISIONMESH_H__

#include "math/mathlib.h"

#include "BulletCollision/CollisionShapes/btTriangleMesh.h"

#include <string>
#include <map>

namespace model
{

class CollisionMesh
{
public:

	/// type definition for the material registry
	typedef std::map<std::string, CollisionMesh *> Registry;

	CollisionMesh(const std::string &name);

	~CollisionMesh();

	/* ---- inspectors ----------------------------------------- */

	inline const std::string &name() const {
		return collisionmesh_name;
	}
	
	/**
	 * @brief the number of triangles in the collision mesh
	 */
	inline size_t size() const {
		return collisionmesh_size;
	}
	
	static bool initialized() {
			return collisionmesh_initialized;
	}
	
	/**
	 * @brief the bullet triangle mesh object
	 */
	inline btTriangleMesh *triangles() {
		return collisionmesh_triangles;
	}
	
	/* ---- mutators ------------------------------------------- */
	
	/**
	 *  @brief add a triangle to the collision mesh
	 */
	void add_triangle(const math::Vector3f & v0, const math::Vector3f & v1, const math::Vector3f & v2);

	/* ---- static ----------------------------------------------------- */

	/**
	 * @brief initialize collisionmesh registry
	 */
	static void init();

	/**
	 * @brief shutdown collisionmesh registry
	 */
	static void shutdown();

	/**
	 * @brief clear collisionmesh registry
	 */
	static void clear();

	/**
	 * @brief find a collisionmesh in the registry
	 */
	static CollisionMesh *find(const std::string &name);

	/**
	 * @brief add a collisionmesh to the registry
	 */
	static void add(CollisionMesh *collisionmesh);
	
private:

	/// the materials registry
	static Registry			collisionmesh_registry;
	static bool			collisionmesh_initialized;
	
	std::string			collisionmesh_name;
	size_t				collisionmesh_size;
	btTriangleMesh			*collisionmesh_triangles;
};

} // namespace model

#endif // __INCLUDED_MODEL_COLLISIONMESH_H__