genesis-3d_engine/Engine/ExtIncludes/physX3/windows/geometry/PxMeshScale.h

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// This code contains NVIDIA Confidential Information and is disclosed to you
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// Copyright (c) 2008-2013 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PX_PHYSICS_NX_MESHSCALE
#define PX_PHYSICS_NX_MESHSCALE
/** \addtogroup geomutils
@{
*/
#include "common/PxPhysXCommon.h"
#include "foundation/PxMat33.h"
#ifndef PX_DOXYGEN
namespace physx
{
#endif
/**
\brief A class expressing a nonuniform scaling transformation.
The scaling is along arbitrary axes that are specified by PxMeshScale::rotation.
\note Currently only positive scale values are supported.
@see PxConvexMeshGeometry PxTriangleMeshGeometry
*/
class PxMeshScale
{
public:
/**
\brief Constructor initializes to identity scale.
*/
PX_CUDA_CALLABLE PX_FORCE_INLINE PxMeshScale(): scale(PxVec3(1.0f, 1.0f, 1.0f)), rotation(PxQuat::createIdentity())
{
}
/**
\brief Constructor to initialize to arbitrary scaling.
*/
PX_CUDA_CALLABLE PX_FORCE_INLINE PxMeshScale(const PxVec3& s, const PxQuat& r)
{
PX_ASSERT(r.isUnit());
scale = s;
rotation = r;
}
/**
\brief Returns true if the scaling is an identity transformation.
*/
PX_CUDA_CALLABLE PX_FORCE_INLINE bool isIdentity() const
{
return (scale.x == 1.0f && scale.y == 1.0f && scale.z == 1.0f);
}
/**
\brief Returns the inverse of this scaling transformation.
*/
PX_CUDA_CALLABLE PX_FORCE_INLINE PxMeshScale getInverse() const
{
return PxMeshScale(PxVec3(1.0f/scale.x, 1.0f/scale.y, 1.0f/scale.z), rotation);
}
/**
\brief Returns the identity scaling transformation.
*/
static PX_CUDA_CALLABLE PX_FORCE_INLINE PxMeshScale createIdentity()
{
return PxMeshScale(PxVec3(1.0f, 1.0f, 1.0f),PxQuat::createIdentity());
}
/**
\brief Converts this transformation to a 3x3 matrix representation.
*/
PX_CUDA_CALLABLE PX_FORCE_INLINE PxMat33 toMat33() const
{
PxMat33 rot(rotation);
PxMat33 trans = rot.getTranspose();
trans.column0 *= scale[0];
trans.column1 *= scale[1];
trans.column2 *= scale[2];
return trans * rot;
}
PxVec3 scale; //!< A nonuniform scaling
PxQuat rotation; //!< The orientation of the scaling axes
};
#ifndef PX_DOXYGEN
} // namespace physx
#endif
/** @} */
#endif