| /// @ref gtx_transform2 |
| /// @file glm/gtx/transform2.inl |
| |
| namespace glm |
| { |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat3x3<T, P> shearX2D(tmat3x3<T, P> const& m, T s) |
| { |
| tmat3x3<T, P> r(1); |
| r[0][1] = s; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat3x3<T, P> shearY2D(tmat3x3<T, P> const& m, T s) |
| { |
| tmat3x3<T, P> r(1); |
| r[1][0] = s; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat4x4<T, P> shearX3D(tmat4x4<T, P> const& m, T s, T t) |
| { |
| tmat4x4<T, P> r(1); |
| r[1][0] = s; |
| r[2][0] = t; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat4x4<T, P> shearY3D(tmat4x4<T, P> const& m, T s, T t) |
| { |
| tmat4x4<T, P> r(1); |
| r[0][1] = s; |
| r[2][1] = t; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat4x4<T, P> shearZ3D(tmat4x4<T, P> const& m, T s, T t) |
| { |
| tmat4x4<T, P> r(1); |
| r[0][2] = s; |
| r[1][2] = t; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat3x3<T, P> reflect2D(tmat3x3<T, P> const& m, tvec3<T, P> const& normal) |
| { |
| tmat3x3<T, P> r(static_cast<T>(1)); |
| r[0][0] = static_cast<T>(1) - static_cast<T>(2) * normal.x * normal.x; |
| r[0][1] = -static_cast<T>(2) * normal.x * normal.y; |
| r[1][0] = -static_cast<T>(2) * normal.x * normal.y; |
| r[1][1] = static_cast<T>(1) - static_cast<T>(2) * normal.y * normal.y; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat4x4<T, P> reflect3D(tmat4x4<T, P> const& m, tvec3<T, P> const& normal) |
| { |
| tmat4x4<T, P> r(static_cast<T>(1)); |
| r[0][0] = static_cast<T>(1) - static_cast<T>(2) * normal.x * normal.x; |
| r[0][1] = -static_cast<T>(2) * normal.x * normal.y; |
| r[0][2] = -static_cast<T>(2) * normal.x * normal.z; |
| |
| r[1][0] = -static_cast<T>(2) * normal.x * normal.y; |
| r[1][1] = static_cast<T>(1) - static_cast<T>(2) * normal.y * normal.y; |
| r[1][2] = -static_cast<T>(2) * normal.y * normal.z; |
| |
| r[2][0] = -static_cast<T>(2) * normal.x * normal.z; |
| r[2][1] = -static_cast<T>(2) * normal.y * normal.z; |
| r[2][2] = static_cast<T>(1) - static_cast<T>(2) * normal.z * normal.z; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat3x3<T, P> proj2D( |
| const tmat3x3<T, P>& m, |
| const tvec3<T, P>& normal) |
| { |
| tmat3x3<T, P> r(static_cast<T>(1)); |
| r[0][0] = static_cast<T>(1) - normal.x * normal.x; |
| r[0][1] = - normal.x * normal.y; |
| r[1][0] = - normal.x * normal.y; |
| r[1][1] = static_cast<T>(1) - normal.y * normal.y; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat4x4<T, P> proj3D( |
| const tmat4x4<T, P>& m, |
| const tvec3<T, P>& normal) |
| { |
| tmat4x4<T, P> r(static_cast<T>(1)); |
| r[0][0] = static_cast<T>(1) - normal.x * normal.x; |
| r[0][1] = - normal.x * normal.y; |
| r[0][2] = - normal.x * normal.z; |
| r[1][0] = - normal.x * normal.y; |
| r[1][1] = static_cast<T>(1) - normal.y * normal.y; |
| r[1][2] = - normal.y * normal.z; |
| r[2][0] = - normal.x * normal.z; |
| r[2][1] = - normal.y * normal.z; |
| r[2][2] = static_cast<T>(1) - normal.z * normal.z; |
| return m * r; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat4x4<T, P> scaleBias(T scale, T bias) |
| { |
| tmat4x4<T, P> result; |
| result[3] = tvec4<T, P>(tvec3<T, P>(bias), static_cast<T>(1)); |
| result[0][0] = scale; |
| result[1][1] = scale; |
| result[2][2] = scale; |
| return result; |
| } |
| |
| template <typename T, precision P> |
| GLM_FUNC_QUALIFIER tmat4x4<T, P> scaleBias(tmat4x4<T, P> const& m, T scale, T bias) |
| { |
| return m * scaleBias(scale, bias); |
| } |
| }//namespace glm |
| |