| 1 | /// @ref gtx_matrix_transform_2d |
| 2 | /// @author Miguel Ángel Pérez Martínez |
| 3 | |
| 4 | #include "../trigonometric.hpp" |
| 5 | |
| 6 | namespace glm |
| 7 | { |
| 8 | |
| 9 | template<typename T, qualifier Q> |
| 10 | GLM_FUNC_QUALIFIER mat<3, 3, T, Q> translate( |
| 11 | mat<3, 3, T, Q> const& m, |
| 12 | vec<2, T, Q> const& v) |
| 13 | { |
| 14 | mat<3, 3, T, Q> Result(m); |
| 15 | Result[2] = m[0] * v[0] + m[1] * v[1] + m[2]; |
| 16 | return Result; |
| 17 | } |
| 18 | |
| 19 | |
| 20 | template<typename T, qualifier Q> |
| 21 | GLM_FUNC_QUALIFIER mat<3, 3, T, Q> rotate( |
| 22 | mat<3, 3, T, Q> const& m, |
| 23 | T angle) |
| 24 | { |
| 25 | T const a = angle; |
| 26 | T const c = cos(a); |
| 27 | T const s = sin(a); |
| 28 | |
| 29 | mat<3, 3, T, Q> Result; |
| 30 | Result[0] = m[0] * c + m[1] * s; |
| 31 | Result[1] = m[0] * -s + m[1] * c; |
| 32 | Result[2] = m[2]; |
| 33 | return Result; |
| 34 | } |
| 35 | |
| 36 | template<typename T, qualifier Q> |
| 37 | GLM_FUNC_QUALIFIER mat<3, 3, T, Q> scale( |
| 38 | mat<3, 3, T, Q> const& m, |
| 39 | vec<2, T, Q> const& v) |
| 40 | { |
| 41 | mat<3, 3, T, Q> Result; |
| 42 | Result[0] = m[0] * v[0]; |
| 43 | Result[1] = m[1] * v[1]; |
| 44 | Result[2] = m[2]; |
| 45 | return Result; |
| 46 | } |
| 47 | |
| 48 | template<typename T, qualifier Q> |
| 49 | GLM_FUNC_QUALIFIER mat<3, 3, T, Q> shearX( |
| 50 | mat<3, 3, T, Q> const& m, |
| 51 | T y) |
| 52 | { |
| 53 | mat<3, 3, T, Q> Result(1); |
| 54 | Result[0][1] = y; |
| 55 | return m * Result; |
| 56 | } |
| 57 | |
| 58 | template<typename T, qualifier Q> |
| 59 | GLM_FUNC_QUALIFIER mat<3, 3, T, Q> shearY( |
| 60 | mat<3, 3, T, Q> const& m, |
| 61 | T x) |
| 62 | { |
| 63 | mat<3, 3, T, Q> Result(1); |
| 64 | Result[1][0] = x; |
| 65 | return m * Result; |
| 66 | } |
| 67 | |
| 68 | }//namespace glm |