/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#ifndef _MOOF_FRUSTUM_HH_
#define _MOOF_FRUSTUM_HH_
	
#include <Moof/Math.hh>
#include <Moof/Plane.hh>


namespace Mf {


template <int D> class Aabb;
template <int D> class Sphere;

class Frustum
{
	Plane	mPlanes[6]; // left, right, bottom, top, near, far

public:
	typedef enum
	{
		OUTSIDE		= 0,
		INSIDE		= 1,
		INTERSECT	= 2
	} Collision;

	Frustum() {}
	Frustum(const Matrix4& modelview, const Matrix4& projection)
	{
		init(modelview, projection);
	}
	Frustum(const Matrix4& modelview, Scalar fovy, Scalar aspect,
			Scalar abutting, Scalar distant)
	{
		init(modelview, fovy, aspect, abutting, distant);
	}

	void init(const Matrix4& modelview, const Matrix4& projection);
	void init(const Matrix4& modelview, Scalar fovy, Scalar aspect,
			  Scalar abutting, Scalar distant);

	Collision contains(const Aabb<3>& aabb) const;
	Collision contains(const Sphere<3>& sphere) const;
};


} // namespace Mf

#endif // _MOOF_FRUSTUM_HH_