virtualx-engine/thirdparty/bullet/Bullet3Geometry/b3GeometryUtil.h

/*
Copyright (c) 2003-2006 Gino van den Bergen / Erwin Coumans  http://continuousphysics.com/Bullet/

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, 
including commercial applications, and to alter it and redistribute it freely, 
subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/

#ifndef B3_GEOMETRY_UTIL_H
#define B3_GEOMETRY_UTIL_H

#include "Bullet3Common/b3Vector3.h"
#include "Bullet3Common/b3AlignedObjectArray.h"

///The b3GeometryUtil helper class provides a few methods to convert between plane equations and vertices.
class b3GeometryUtil
{
public:
	static void getPlaneEquationsFromVertices(b3AlignedObjectArray<b3Vector3>& vertices, b3AlignedObjectArray<b3Vector3>& planeEquationsOut);

	static void getVerticesFromPlaneEquations(const b3AlignedObjectArray<b3Vector3>& planeEquations, b3AlignedObjectArray<b3Vector3>& verticesOut);

	static bool isInside(const b3AlignedObjectArray<b3Vector3>& vertices, const b3Vector3& planeNormal, b3Scalar margin);

	static bool isPointInsidePlanes(const b3AlignedObjectArray<b3Vector3>& planeEquations, const b3Vector3& point, b3Scalar margin);

	static bool areVerticesBehindPlane(const b3Vector3& planeNormal, const b3AlignedObjectArray<b3Vector3>& vertices, b3Scalar margin);
};

#endif  //B3_GEOMETRY_UTIL_H