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107 lines
3.5 KiB
107 lines
3.5 KiB
#ifndef Magnum_Math_Matrix3_h |
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#define Magnum_Math_Matrix3_h |
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/* |
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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Magnum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License version 3 for more details. |
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*/ |
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/** @file |
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* @brief Class Magnum::Math::Matrix3 |
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*/ |
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#include "Matrix.h" |
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#include "Vector3.h" |
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namespace Magnum { namespace Math { |
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/** |
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@brief 3x3 matrix |
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Provides functions for transformations in 2D. See also Matrix4 for 3D |
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transformations. |
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*/ |
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template<class T> class Matrix3: public Matrix<3, T> { |
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public: |
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/** |
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* @brief 2D translation matrix |
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* @param vec Translation vector |
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* |
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* @see Matrix4::translation(), Vector2::xAxis(), Vector2::yAxis() |
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*/ |
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inline constexpr static Matrix3<T> translation(const Vector2<T>& vec) { |
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return Matrix3<T>( /* Column-major! */ |
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T(1), T(0), T(0), |
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T(0), T(1), T(0), |
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vec.x(), vec.y(), T(1) |
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); |
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} |
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/** |
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* @brief 2D scaling matrix |
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* @param vec Scaling vector |
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* |
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* @see Matrix4::scaling(), Vector2::xScale(), Vector2::yScale() |
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*/ |
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inline constexpr static Matrix3<T> scaling(const Vector2<T>& vec) { |
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return Matrix3<T>( /* Column-major! */ |
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vec.x(), T(0), T(0), |
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T(0), vec.y(), T(0), |
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T(0), T(0), T(1) |
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); |
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} |
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/** |
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* @brief 3D rotation matrix |
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* @param angle Rotation angle (counterclockwise, in radians) |
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* |
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* @see Matrix4::rotation(), deg(), rad() |
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*/ |
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static Matrix3<T> rotation(T angle) { |
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return Matrix3<T>( /* Column-major! */ |
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T(cos(angle)), T(sin(angle)), T(0), |
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-T(sin(angle)), T(cos(angle)), T(0), |
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T(0), T(0), T(1) |
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); |
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} |
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/** @copydoc Matrix::Matrix(ZeroType) */ |
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inline constexpr explicit Matrix3(typename Matrix<3, T>::ZeroType): Matrix<3, T>(Matrix<3, T>::Zero) {} |
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/** @copydoc Matrix::Matrix(IdentityType, T) */ |
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inline constexpr explicit Matrix3(typename Matrix<3, T>::IdentityType = (Matrix<3, T>::Identity), T value = T(1)): Matrix<3, T>( |
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value, T(0), T(0), |
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T(0), value, T(0), |
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T(0), T(0), value |
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) {} |
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/** @copydoc Matrix::Matrix(T, U...) */ |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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template<class ...U> inline constexpr Matrix3(T first, U... next): Matrix<3, T>(first, next...) {} |
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#else |
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template<class ...U> inline constexpr Matrix3(T first, U... next) {} |
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#endif |
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/** @copydoc Matrix::Matrix(const Matrix<size, T>&) */ |
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inline constexpr Matrix3(const Matrix<3, T>& other): Matrix<3, T>(other) {} |
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MAGNUM_MATRIX_SUBCLASS_IMPLEMENTATION(Matrix3, Vector3, 3) |
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}; |
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/** @debugoperator{Magnum::Math::Matrix3} */ |
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template<class T> Corrade::Utility::Debug operator<<(Corrade::Utility::Debug debug, const Magnum::Math::Matrix3<T>& value) { |
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return debug << static_cast<const Magnum::Math::Matrix<3, T>&>(value); |
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} |
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}} |
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#endif
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