| Tony-LunarG | b0b195d | 2015-05-13 15:01:06 -0600 | [diff] [blame] | 1 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 2 | // OpenGL Mathematics Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net) |
| 3 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 4 | // Created : 2005-02-28 |
| 5 | // Updated : 2005-04-23 |
| 6 | // Licence : This source is under MIT License |
| 7 | // File : glm/gtx/transform2.inl |
| 8 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | namespace glm |
| 11 | { |
| 12 | template <typename T, precision P> |
| 13 | GLM_FUNC_QUALIFIER detail::tmat3x3<T, P> shearX2D( |
| 14 | const detail::tmat3x3<T, P>& m, |
| 15 | T s) |
| 16 | { |
| 17 | detail::tmat3x3<T, P> r(1); |
| 18 | r[0][1] = s; |
| 19 | return m * r; |
| 20 | } |
| 21 | |
| 22 | template <typename T, precision P> |
| 23 | GLM_FUNC_QUALIFIER detail::tmat3x3<T, P> shearY2D( |
| 24 | const detail::tmat3x3<T, P>& m, |
| 25 | T s) |
| 26 | { |
| 27 | detail::tmat3x3<T, P> r(1); |
| 28 | r[1][0] = s; |
| 29 | return m * r; |
| 30 | } |
| 31 | |
| 32 | template <typename T, precision P> |
| 33 | GLM_FUNC_QUALIFIER detail::tmat4x4<T, P> shearX3D( |
| 34 | const detail::tmat4x4<T, P>& m, |
| 35 | T s, |
| 36 | T t) |
| 37 | { |
| 38 | detail::tmat4x4<T, P> r(1); |
| 39 | r[1][0] = s; |
| 40 | r[2][0] = t; |
| 41 | return m * r; |
| 42 | } |
| 43 | |
| 44 | template <typename T, precision P> |
| 45 | GLM_FUNC_QUALIFIER detail::tmat4x4<T, P> shearY3D( |
| 46 | const detail::tmat4x4<T, P>& m, |
| 47 | T s, |
| 48 | T t) |
| 49 | { |
| 50 | detail::tmat4x4<T, P> r(1); |
| 51 | r[0][1] = s; |
| 52 | r[2][1] = t; |
| 53 | return m * r; |
| 54 | } |
| 55 | |
| 56 | template <typename T, precision P> |
| 57 | GLM_FUNC_QUALIFIER detail::tmat4x4<T, P> shearZ3D( |
| 58 | const detail::tmat4x4<T, P>& m, |
| 59 | T s, |
| 60 | T t) |
| 61 | { |
| 62 | detail::tmat4x4<T, P> r(1); |
| 63 | r[0][2] = s; |
| 64 | r[1][2] = t; |
| 65 | return m * r; |
| 66 | } |
| 67 | |
| 68 | template <typename T, precision P> |
| 69 | GLM_FUNC_QUALIFIER detail::tmat3x3<T, P> reflect2D( |
| 70 | const detail::tmat3x3<T, P>& m, |
| 71 | const detail::tvec3<T, P>& normal) |
| 72 | { |
| 73 | detail::tmat3x3<T, P> r(1); |
| 74 | r[0][0] = 1 - 2 * normal.x * normal.x; |
| 75 | r[0][1] = -2 * normal.x * normal.y; |
| 76 | r[1][0] = -2 * normal.x * normal.y; |
| 77 | r[1][1] = 1 - 2 * normal.y * normal.y; |
| 78 | return m * r; |
| 79 | } |
| 80 | |
| 81 | template <typename T, precision P> |
| 82 | GLM_FUNC_QUALIFIER detail::tmat4x4<T, P> reflect3D( |
| 83 | const detail::tmat4x4<T, P>& m, |
| 84 | const detail::tvec3<T, P>& normal) |
| 85 | { |
| 86 | detail::tmat4x4<T, P> r(1); |
| 87 | r[0][0] = 1 - 2 * normal.x * normal.x; |
| 88 | r[0][1] = -2 * normal.x * normal.y; |
| 89 | r[0][2] = -2 * normal.x * normal.z; |
| 90 | |
| 91 | r[1][0] = -2 * normal.x * normal.y; |
| 92 | r[1][1] = 1 - 2 * normal.y * normal.y; |
| 93 | r[1][2] = -2 * normal.y * normal.z; |
| 94 | |
| 95 | r[2][0] = -2 * normal.x * normal.z; |
| 96 | r[2][1] = -2 * normal.y * normal.z; |
| 97 | r[2][2] = 1 - 2 * normal.z * normal.z; |
| 98 | return m * r; |
| 99 | } |
| 100 | |
| 101 | template <typename T, precision P> |
| 102 | GLM_FUNC_QUALIFIER detail::tmat3x3<T, P> proj2D( |
| 103 | const detail::tmat3x3<T, P>& m, |
| 104 | const detail::tvec3<T, P>& normal) |
| 105 | { |
| 106 | detail::tmat3x3<T, P> r(1); |
| 107 | r[0][0] = 1 - normal.x * normal.x; |
| 108 | r[0][1] = - normal.x * normal.y; |
| 109 | r[1][0] = - normal.x * normal.y; |
| 110 | r[1][1] = 1 - normal.y * normal.y; |
| 111 | return m * r; |
| 112 | } |
| 113 | |
| 114 | template <typename T, precision P> |
| 115 | GLM_FUNC_QUALIFIER detail::tmat4x4<T, P> proj3D( |
| 116 | const detail::tmat4x4<T, P>& m, |
| 117 | const detail::tvec3<T, P>& normal) |
| 118 | { |
| 119 | detail::tmat4x4<T, P> r(1); |
| 120 | r[0][0] = 1 - normal.x * normal.x; |
| 121 | r[0][1] = - normal.x * normal.y; |
| 122 | r[0][2] = - normal.x * normal.z; |
| 123 | r[1][0] = - normal.x * normal.y; |
| 124 | r[1][1] = 1 - normal.y * normal.y; |
| 125 | r[1][2] = - normal.y * normal.z; |
| 126 | r[2][0] = - normal.x * normal.z; |
| 127 | r[2][1] = - normal.y * normal.z; |
| 128 | r[2][2] = 1 - normal.z * normal.z; |
| 129 | return m * r; |
| 130 | } |
| 131 | |
| 132 | template <typename T, precision P> |
| 133 | GLM_FUNC_QUALIFIER detail::tmat4x4<T, P> scaleBias( |
| 134 | T scale, |
| 135 | T bias) |
| 136 | { |
| 137 | detail::tmat4x4<T, P> result; |
| 138 | result[3] = detail::tvec4<T, P>(detail::tvec3<T, P>(bias), T(1)); |
| 139 | result[0][0] = scale; |
| 140 | result[1][1] = scale; |
| 141 | result[2][2] = scale; |
| 142 | return result; |
| 143 | } |
| 144 | |
| 145 | template <typename T, precision P> |
| 146 | GLM_FUNC_QUALIFIER detail::tmat4x4<T, P> scaleBias( |
| 147 | const detail::tmat4x4<T, P>& m, |
| 148 | T scale, |
| 149 | T bias) |
| 150 | { |
| 151 | return m * scaleBias(scale, bias); |
| 152 | } |
| 153 | }//namespace glm |
| 154 | |