/*
Copyright (C) 2006 Parallel Realities

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

class Frustum {

	private:
		
		float modelMatrix[16];
		float projectionMatrix[16];
		float frustumMatrix[16];
		Plane plane[6];
		
		void multiplyMatrix();

	public:

	Frustum();
	~Frustum();

	void calculate();
	int classifyPoint(Plane p, Vector v);
	bool containsSphere(Vector position, float radius);
	bool containsEntity(Entity *entity);
	int boundingBoxInsideFrustrum(int x1, int y1, int z1, int x2, int y2, int z2);

};
