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authorsanine <sanine.not@pm.me>2022-04-16 11:55:54 -0500
committersanine <sanine.not@pm.me>2022-04-16 11:55:54 -0500
commit8fb7916a0d0cb007a4c3a4e6a31af58765268ca3 (patch)
tree52b5524a94a5b04e17a1fd7f8aca988ab6d0c75f /src/mesh/assimp-master/include/assimp/matrix3x3.h
parentdb81b925d776103326128bf629cbdda576a223e7 (diff)
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-/*
----------------------------------------------------------------------------
-Open Asset Import Library (assimp)
----------------------------------------------------------------------------
-
-Copyright (c) 2006-2022, assimp team
-
-All rights reserved.
-
-Redistribution and use of this software 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 notice, this list of conditions and the
- following disclaimer in the documentation and/or other
- materials provided with the distribution.
-
-* Neither the name of the assimp team, nor the names of its
- contributors may be used to endorse or promote products
- derived from this software without specific prior
- written permission of the assimp team.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------------
-*/
-
-/** @file matrix3x3.h
- * @brief Definition of a 3x3 matrix, including operators when compiling in C++
- */
-#pragma once
-#ifndef AI_MATRIX3X3_H_INC
-#define AI_MATRIX3X3_H_INC
-
-#ifdef __GNUC__
-# pragma GCC system_header
-#endif
-
-#include <assimp/defs.h>
-
-#ifdef __cplusplus
-
-template <typename T> class aiMatrix4x4t;
-template <typename T> class aiVector2t;
-template <typename T> class aiVector3t;
-
-// ---------------------------------------------------------------------------
-/** @brief Represents a row-major 3x3 matrix
- *
- * There's much confusion about matrix layouts (column vs. row order).
- * This is *always* a row-major matrix. Not even with the
- * #aiProcess_ConvertToLeftHanded flag, which absolutely does not affect
- * matrix order - it just affects the handedness of the coordinate system
- * defined thereby.
- */
-template <typename TReal>
-class aiMatrix3x3t {
-public:
- aiMatrix3x3t() AI_NO_EXCEPT :
- a1(static_cast<TReal>(1.0f)), a2(), a3(),
- b1(), b2(static_cast<TReal>(1.0f)), b3(),
- c1(), c2(), c3(static_cast<TReal>(1.0f)) {}
-
- aiMatrix3x3t ( TReal _a1, TReal _a2, TReal _a3,
- TReal _b1, TReal _b2, TReal _b3,
- TReal _c1, TReal _c2, TReal _c3) :
- a1(_a1), a2(_a2), a3(_a3),
- b1(_b1), b2(_b2), b3(_b3),
- c1(_c1), c2(_c2), c3(_c3)
- {}
-
- // matrix multiplication.
- aiMatrix3x3t& operator *= (const aiMatrix3x3t& m);
- aiMatrix3x3t operator * (const aiMatrix3x3t& m) const;
-
- // array access operators
- TReal* operator[] (unsigned int p_iIndex);
- const TReal* operator[] (unsigned int p_iIndex) const;
-
- // comparison operators
- bool operator== (const aiMatrix3x3t<TReal>& m) const;
- bool operator!= (const aiMatrix3x3t<TReal>& m) const;
-
- bool Equal(const aiMatrix3x3t<TReal> &m, TReal epsilon = ai_epsilon) const;
-
- template <typename TOther>
- operator aiMatrix3x3t<TOther> () const;
-
- // -------------------------------------------------------------------
- /** @brief Construction from a 4x4 matrix. The remaining parts
- * of the matrix are ignored.
- */
- explicit aiMatrix3x3t( const aiMatrix4x4t<TReal>& pMatrix);
-
- // -------------------------------------------------------------------
- /** @brief Transpose the matrix
- */
- aiMatrix3x3t& Transpose();
-
- // -------------------------------------------------------------------
- /** @brief Invert the matrix.
- * If the matrix is not invertible all elements are set to qnan.
- * Beware, use (f != f) to check whether a TReal f is qnan.
- */
- aiMatrix3x3t& Inverse();
- TReal Determinant() const;
-
- // -------------------------------------------------------------------
- /** @brief Returns a rotation matrix for a rotation around z
- * @param a Rotation angle, in radians
- * @param out Receives the output matrix
- * @return Reference to the output matrix
- */
- static aiMatrix3x3t& RotationZ(TReal a, aiMatrix3x3t& out);
-
- // -------------------------------------------------------------------
- /** @brief Returns a rotation matrix for a rotation around
- * an arbitrary axis.
- *
- * @param a Rotation angle, in radians
- * @param axis Axis to rotate around
- * @param out To be filled
- */
- static aiMatrix3x3t& Rotation( TReal a, const aiVector3t<TReal>& axis, aiMatrix3x3t& out);
-
- // -------------------------------------------------------------------
- /** @brief Returns a translation matrix
- * @param v Translation vector
- * @param out Receives the output matrix
- * @return Reference to the output matrix
- */
- static aiMatrix3x3t& Translation( const aiVector2t<TReal>& v, aiMatrix3x3t& out);
-
- // -------------------------------------------------------------------
- /** @brief A function for creating a rotation matrix that rotates a
- * vector called "from" into another vector called "to".
- * Input : from[3], to[3] which both must be *normalized* non-zero vectors
- * Output: mtx[3][3] -- a 3x3 matrix in column-major form
- * Authors: Tomas Möller, John Hughes
- * "Efficiently Building a Matrix to Rotate One Vector to Another"
- * Journal of Graphics Tools, 4(4):1-4, 1999
- */
- static aiMatrix3x3t& FromToMatrix(const aiVector3t<TReal>& from,
- const aiVector3t<TReal>& to, aiMatrix3x3t& out);
-
-public:
- TReal a1, a2, a3;
- TReal b1, b2, b3;
- TReal c1, c2, c3;
-};
-
-typedef aiMatrix3x3t<ai_real> aiMatrix3x3;
-
-#else
-
-struct aiMatrix3x3 {
- ai_real a1, a2, a3;
- ai_real b1, b2, b3;
- ai_real c1, c2, c3;
-};
-
-#endif // __cplusplus
-
-#endif // AI_MATRIX3X3_H_INC