1 #ifndef _TCUMATRIXUTIL_HPP 2 #define _TCUMATRIXUTIL_HPP 3 /*------------------------------------------------------------------------- 4 * drawElements Quality Program Tester Core 5 * ---------------------------------------- 6 * 7 * Copyright 2014 The Android Open Source Project 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); 10 * you may not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 * 21 *//*! 22 * \file 23 * \brief Matrix utility functions 24 *//*--------------------------------------------------------------------*/ 25 26 #include "tcuDefs.hpp" 27 #include "tcuMatrix.hpp" 28 #include "deMath.h" 29 30 namespace tcu 31 { 32 33 template <typename T, int Size> 34 Matrix<T, Size+1, Size+1> translationMatrix (const Vector<T, Size>& translation); 35 36 // 2D affine transformations. 37 Matrix<float, 2, 2> rotationMatrix (float radians); 38 Matrix<float, 2, 2> shearMatrix (const Vector<float, 2>& shear); 39 40 // 3D axis rotations. 41 Matrix<float, 3, 3> rotationMatrixX (float radiansX); 42 Matrix<float, 3, 3> rotationMatrixY (float radiansY); 43 Matrix<float, 3, 3> rotationMatrixZ (float radiansZ); 44 45 // Implementations. 46 47 // Builds a translation matrix for a homogenous coordinate system 48 template <typename T, int Len> 49 inline Matrix<T, Len+1, Len+1> translationMatrix (const Vector<T, Len>& translation) 50 { 51 Matrix<T, Len+1, Len+1> res = Matrix<T, Len+1, Len+1>(); 52 for (int row = 0; row < Len; row++) 53 res(row, Len) = translation.m_data[row]; 54 return res; 55 } 56 57 inline Matrix<float, 2, 2> rotationMatrix (float radians) 58 { 59 Matrix<float, 2, 2> mat; 60 float c = deFloatCos(radians); 61 float s = deFloatSin(radians); 62 63 mat(0, 0) = c; 64 mat(0, 1) = -s; 65 mat(1, 0) = s; 66 mat(1, 1) = c; 67 68 return mat; 69 } 70 71 inline Matrix<float, 2, 2> shearMatrix (const Vector<float, 2>& shear) 72 { 73 Matrix<float, 2, 2> mat; 74 mat(0, 0) = 1.0f; 75 mat(0, 1) = shear.x(); 76 mat(1, 0) = shear.y(); 77 mat(1, 1) = 1.0f + shear.x()*shear.y(); 78 return mat; 79 } 80 81 inline Matrix<float, 3, 3> rotationMatrixX (float radiansX) 82 { 83 Matrix<float, 3, 3> mat(1.0f); 84 float c = deFloatCos(radiansX); 85 float s = deFloatSin(radiansX); 86 87 mat(1, 1) = c; 88 mat(1, 2) = -s; 89 mat(2, 1) = s; 90 mat(2, 2) = c; 91 92 return mat; 93 } 94 95 inline Matrix<float, 3, 3> rotationMatrixY (float radiansY) 96 { 97 Matrix<float, 3, 3> mat(1.0f); 98 float c = deFloatCos(radiansY); 99 float s = deFloatSin(radiansY); 100 101 mat(0, 0) = c; 102 mat(0, 2) = s; 103 mat(2, 0) = -s; 104 mat(2, 2) = c; 105 106 return mat; 107 } 108 109 inline Matrix<float, 3, 3> rotationMatrixZ (float radiansZ) 110 { 111 Matrix<float, 3, 3> mat(1.0f); 112 float c = deFloatCos(radiansZ); 113 float s = deFloatSin(radiansZ); 114 115 mat(0, 0) = c; 116 mat(0, 1) = -s; 117 mat(1, 0) = s; 118 mat(1, 1) = c; 119 120 return mat; 121 } 122 123 } // tcu 124 125 #endif // _TCUMATRIXUTIL_HPP 126
