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annotate libs/assimp/assimp/matrix3x3.h @ 0:b2f14e535253

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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 01 Feb 2014 19:58:19 +0200
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nuclear@0 1 /*
nuclear@0 2 ---------------------------------------------------------------------------
nuclear@0 3 Open Asset Import Library (assimp)
nuclear@0 4 ---------------------------------------------------------------------------
nuclear@0 5
nuclear@0 6 Copyright (c) 2006-2012, assimp team
nuclear@0 7
nuclear@0 8 All rights reserved.
nuclear@0 9
nuclear@0 10 Redistribution and use of this software in source and binary forms,
nuclear@0 11 with or without modification, are permitted provided that the following
nuclear@0 12 conditions are met:
nuclear@0 13
nuclear@0 14 * Redistributions of source code must retain the above
nuclear@0 15 copyright notice, this list of conditions and the
nuclear@0 16 following disclaimer.
nuclear@0 17
nuclear@0 18 * Redistributions in binary form must reproduce the above
nuclear@0 19 copyright notice, this list of conditions and the
nuclear@0 20 following disclaimer in the documentation and/or other
nuclear@0 21 materials provided with the distribution.
nuclear@0 22
nuclear@0 23 * Neither the name of the assimp team, nor the names of its
nuclear@0 24 contributors may be used to endorse or promote products
nuclear@0 25 derived from this software without specific prior
nuclear@0 26 written permission of the assimp team.
nuclear@0 27
nuclear@0 28 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
nuclear@0 29 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
nuclear@0 30 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0 31 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
nuclear@0 32 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0 33 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
nuclear@0 34 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0 35 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
nuclear@0 36 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
nuclear@0 37 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
nuclear@0 38 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0 39 ---------------------------------------------------------------------------
nuclear@0 40 */
nuclear@0 41
nuclear@0 42 /** @file matrix3x3.h
nuclear@0 43 * @brief Definition of a 3x3 matrix, including operators when compiling in C++
nuclear@0 44 */
nuclear@0 45 #ifndef AI_MATRIX3x3_H_INC
nuclear@0 46 #define AI_MATRIX3x3_H_INC
nuclear@0 47
nuclear@0 48 #include "./Compiler/pushpack1.h"
nuclear@0 49
nuclear@0 50 #ifdef __cplusplus
nuclear@0 51
nuclear@0 52 template <typename T> class aiMatrix4x4t;
nuclear@0 53 template <typename T> class aiVector2t;
nuclear@0 54
nuclear@0 55 // ---------------------------------------------------------------------------
nuclear@0 56 /** @brief Represents a row-major 3x3 matrix
nuclear@0 57 *
nuclear@0 58 * There's much confusion about matrix layouts (column vs. row order).
nuclear@0 59 * This is *always* a row-major matrix. Not even with the
nuclear@0 60 * #aiProcess_ConvertToLeftHanded flag, which absolutely does not affect
nuclear@0 61 * matrix order - it just affects the handedness of the coordinate system
nuclear@0 62 * defined thereby.
nuclear@0 63 */
nuclear@0 64 template <typename TReal>
nuclear@0 65 class aiMatrix3x3t
nuclear@0 66 {
nuclear@0 67 public:
nuclear@0 68
nuclear@0 69 aiMatrix3x3t () :
nuclear@0 70 a1(static_cast<TReal>(1.0f)), a2(), a3(),
nuclear@0 71 b1(), b2(static_cast<TReal>(1.0f)), b3(),
nuclear@0 72 c1(), c2(), c3(static_cast<TReal>(1.0f)) {}
nuclear@0 73
nuclear@0 74 aiMatrix3x3t ( TReal _a1, TReal _a2, TReal _a3,
nuclear@0 75 TReal _b1, TReal _b2, TReal _b3,
nuclear@0 76 TReal _c1, TReal _c2, TReal _c3) :
nuclear@0 77 a1(_a1), a2(_a2), a3(_a3),
nuclear@0 78 b1(_b1), b2(_b2), b3(_b3),
nuclear@0 79 c1(_c1), c2(_c2), c3(_c3)
nuclear@0 80 {}
nuclear@0 81
nuclear@0 82 public:
nuclear@0 83
nuclear@0 84 // matrix multiplication.
nuclear@0 85 aiMatrix3x3t& operator *= (const aiMatrix3x3t& m);
nuclear@0 86 aiMatrix3x3t operator * (const aiMatrix3x3t& m) const;
nuclear@0 87
nuclear@0 88 // array access operators
nuclear@0 89 TReal* operator[] (unsigned int p_iIndex);
nuclear@0 90 const TReal* operator[] (unsigned int p_iIndex) const;
nuclear@0 91
nuclear@0 92 // comparison operators
nuclear@0 93 bool operator== (const aiMatrix4x4t<TReal> m) const;
nuclear@0 94 bool operator!= (const aiMatrix4x4t<TReal> m) const;
nuclear@0 95
nuclear@0 96 template <typename TOther>
nuclear@0 97 operator aiMatrix3x3t<TOther> () const;
nuclear@0 98
nuclear@0 99 public:
nuclear@0 100
nuclear@0 101 // -------------------------------------------------------------------
nuclear@0 102 /** @brief Construction from a 4x4 matrix. The remaining parts
nuclear@0 103 * of the matrix are ignored.
nuclear@0 104 */
nuclear@0 105 explicit aiMatrix3x3t( const aiMatrix4x4t<TReal>& pMatrix);
nuclear@0 106
nuclear@0 107 // -------------------------------------------------------------------
nuclear@0 108 /** @brief Transpose the matrix
nuclear@0 109 */
nuclear@0 110 aiMatrix3x3t& Transpose();
nuclear@0 111
nuclear@0 112 // -------------------------------------------------------------------
nuclear@0 113 /** @brief Invert the matrix.
nuclear@0 114 * If the matrix is not invertible all elements are set to qnan.
nuclear@0 115 * Beware, use (f != f) to check whether a TReal f is qnan.
nuclear@0 116 */
nuclear@0 117 aiMatrix3x3t& Inverse();
nuclear@0 118 TReal Determinant() const;
nuclear@0 119
nuclear@0 120 public:
nuclear@0 121 // -------------------------------------------------------------------
nuclear@0 122 /** @brief Returns a rotation matrix for a rotation around z
nuclear@0 123 * @param a Rotation angle, in radians
nuclear@0 124 * @param out Receives the output matrix
nuclear@0 125 * @return Reference to the output matrix
nuclear@0 126 */
nuclear@0 127 static aiMatrix3x3t& RotationZ(TReal a, aiMatrix3x3t& out);
nuclear@0 128
nuclear@0 129 // -------------------------------------------------------------------
nuclear@0 130 /** @brief Returns a rotation matrix for a rotation around
nuclear@0 131 * an arbitrary axis.
nuclear@0 132 *
nuclear@0 133 * @param a Rotation angle, in radians
nuclear@0 134 * @param axis Axis to rotate around
nuclear@0 135 * @param out To be filled
nuclear@0 136 */
nuclear@0 137 static aiMatrix3x3t& Rotation( TReal a,
nuclear@0 138 const aiVector3t<TReal>& axis, aiMatrix3x3t& out);
nuclear@0 139
nuclear@0 140 // -------------------------------------------------------------------
nuclear@0 141 /** @brief Returns a translation matrix
nuclear@0 142 * @param v Translation vector
nuclear@0 143 * @param out Receives the output matrix
nuclear@0 144 * @return Reference to the output matrix
nuclear@0 145 */
nuclear@0 146 static aiMatrix3x3t& Translation( const aiVector2t<TReal>& v, aiMatrix3x3t& out);
nuclear@0 147
nuclear@0 148 // -------------------------------------------------------------------
nuclear@0 149 /** @brief A function for creating a rotation matrix that rotates a
nuclear@0 150 * vector called "from" into another vector called "to".
nuclear@0 151 * Input : from[3], to[3] which both must be *normalized* non-zero vectors
nuclear@0 152 * Output: mtx[3][3] -- a 3x3 matrix in colum-major form
nuclear@0 153 * Authors: Tomas Möller, John Hughes
nuclear@0 154 * "Efficiently Building a Matrix to Rotate One Vector to Another"
nuclear@0 155 * Journal of Graphics Tools, 4(4):1-4, 1999
nuclear@0 156 */
nuclear@0 157 static aiMatrix3x3t& FromToMatrix(const aiVector3t<TReal>& from,
nuclear@0 158 const aiVector3t<TReal>& to, aiMatrix3x3t& out);
nuclear@0 159
nuclear@0 160 public:
nuclear@0 161
nuclear@0 162
nuclear@0 163 TReal a1, a2, a3;
nuclear@0 164 TReal b1, b2, b3;
nuclear@0 165 TReal c1, c2, c3;
nuclear@0 166 } PACK_STRUCT;
nuclear@0 167
nuclear@0 168 typedef aiMatrix3x3t<float> aiMatrix3x3;
nuclear@0 169
nuclear@0 170 #else
nuclear@0 171
nuclear@0 172 struct aiMatrix3x3 {
nuclear@0 173
nuclear@0 174 float a1, a2, a3;
nuclear@0 175 float b1, b2, b3;
nuclear@0 176 float c1, c2, c3;
nuclear@0 177 } PACK_STRUCT;
nuclear@0 178
nuclear@0 179 #endif
nuclear@0 180
nuclear@0 181 #include "./Compiler/poppack1.h"
nuclear@0 182
nuclear@0 183 #endif // AI_MATRIX3x3_H_INC