GRK/dependencies/physx-4.1/include/foundation/PxMathUtils.h

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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
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// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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//
// Copyright (c) 2008-2019 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 PXFOUNDATION_PXMATHUTILS_H
#define PXFOUNDATION_PXMATHUTILS_H
/** \addtogroup common
@{
*/
#include "foundation/Px.h"
#include "foundation/PxFoundationConfig.h"
#if !PX_DOXYGEN
namespace physx
{
#endif
/**
\brief finds the shortest rotation between two vectors.
\param[in] from the vector to start from
\param[in] target the vector to rotate to
\return a rotation about an axis normal to the two vectors which takes one to the other via the shortest path
*/
PX_FOUNDATION_API PxQuat PxShortestRotation(const PxVec3& from, const PxVec3& target);
/* \brief diagonalizes a 3x3 symmetric matrix y
The returned matrix satisfies M = R * D * R', where R is the rotation matrix for the output quaternion, R' its
transpose, and D the diagonal matrix
If the matrix is not symmetric, the result is undefined.
\param[in] m the matrix to diagonalize
\param[out] axes a quaternion rotation which diagonalizes the matrix
\return the vector diagonal of the diagonalized matrix.
*/
PX_FOUNDATION_API PxVec3 PxDiagonalize(const PxMat33& m, PxQuat& axes);
#if !PX_DOXYGEN
} // namespace physx
#endif
/** @} */
#endif