/*]  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_SHAPE_HH_
#define _MOOF_SHAPE_HH_

/**
 * \file shape.hh
 * Declares an interface for shapes.
 */

#include <moof/drawable.hh>
#include <moof/math.hh>
#include <moof/opengl.hh>
#include <moof/ray.hh>


// frustum
// plane (can construct from triangle2)
// ray
// shape<>
// +- line<>
// -   line2			line<2>
// -   line3			line<3>
// +- sphere<>
// |   sphere2, circle	sphere<2>
// |   sphere3			sphere<3>
// +- aabb<>
// |   aabb2, rectangle	aabb<2>
// |   aabb3			aabb<3>
// +- polygon<>
// |   triangle2		polygon<2,3>
// |   triangle3		polygon<3,3>


namespace moof {


template <int D>
class shape
{
public:

	virtual ~shape() {}

	/**
	 * Checks if this shape is intersected by a given ray.  If so, returns
	 * the distance from the start of the ray to the shape and information
	 * about the contact via the 2nd parameter.  A negative value is
	 * returned if there is no contact.
	 */
	virtual bool intersect_ray(const ray<D>& ray,
							   typename moof::ray<D>::contact& hit) const
	{
		return false;
	}
};


typedef shape<2>	shape2;
typedef shape<3>	shape3;


} // namespace moof

#endif // _MOOF_SHAPE_HH_