PxTriangle.h

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/*
 * Copyright (c) 2008-2015, NVIDIA CORPORATION.  All rights reserved.
 *
 * NVIDIA CORPORATION and its licensors retain all intellectual property
 * and proprietary rights in and to this software, related documentation
 * and any modifications thereto.  Any use, reproduction, disclosure or
 * distribution of this software and related documentation without an express
 * license agreement from NVIDIA CORPORATION is strictly prohibited.
 */
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  


#ifndef PX_PHYSICS_GEOMUTILS_PX_TRIANGLE
#define PX_PHYSICS_GEOMUTILS_PX_TRIANGLE

#include "common/PxPhysXCommonConfig.h"
#include "foundation/PxVec3.h"

#ifndef PX_DOXYGEN
namespace physx
{
#endif

class PxTriangle
{
    public:
    PX_FORCE_INLINE         PxTriangle() {}

    PX_FORCE_INLINE         PxTriangle(const PxVec3& p0, const PxVec3& p1, const PxVec3& p2)
    {
        verts[0] = p0;
        verts[1] = p1;
        verts[2] = p2;
    }

    PX_FORCE_INLINE         PxTriangle(const PxTriangle& triangle)
    {
        verts[0] = triangle.verts[0];
        verts[1] = triangle.verts[1];
        verts[2] = triangle.verts[2];
    }

    PX_FORCE_INLINE         ~PxTriangle() {}

    PxVec3      verts[3];

    PX_FORCE_INLINE void    normal(PxVec3& _normal) const
    {
        _normal = (verts[1]-verts[0]).cross(verts[2]-verts[0]);
        _normal.normalize();
    }

#ifdef __SPU__
    void    denormalizedNormal(PxVec3& _normal) const
#else
    PX_FORCE_INLINE void    denormalizedNormal(PxVec3& _normal) const
#endif
    {
        _normal = (verts[1]-verts[0]).cross(verts[2]-verts[0]);
    }

    PX_FORCE_INLINE PxReal  area() const
    {
        const PxVec3& p0 = verts[0];
        const PxVec3& p1 = verts[1];
        const PxVec3& p2 = verts[2];
        return ((p0 - p1).cross(p0 - p2)).magnitude() * 0.5f;
    }

};


#ifndef PX_DOXYGEN
}
#endif

#endif