diff options
Diffstat (limited to 'Eigen/src/Geometry/Transform.h')
| -rw-r--r-- | Eigen/src/Geometry/Transform.h | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/Eigen/src/Geometry/Transform.h b/Eigen/src/Geometry/Transform.h index b003f20ed..3586fb60f 100644 --- a/Eigen/src/Geometry/Transform.h +++ b/Eigen/src/Geometry/Transform.h @@ -55,8 +55,8 @@ struct ei_transform_product_impl; * The homography is internally represented and stored as a (Dim+1)^2 matrix which * is available through the matrix() method. * - * Conversion methods from/to Qt's QMatrix are available if the preprocessor token - * EIGEN_QT_SUPPORT is defined. + * Conversion methods from/to Qt's QMatrix and QTransform are available if the + * preprocessor token EIGEN_QT_SUPPORT is defined. * * \sa class Matrix, class Quaternion */ @@ -137,6 +137,9 @@ public: inline Transform(const QMatrix& other); inline Transform& operator=(const QMatrix& other); inline QMatrix toQMatrix(void) const; + inline Transform(const QTransform& other); + inline Transform& operator=(const QTransform& other); + inline QTransform toQTransform(void) const; #endif /** shortcut for m_matrix(row,col); @@ -283,6 +286,8 @@ Transform<Scalar,Dim>& Transform<Scalar,Dim>::operator=(const QMatrix& other) /** \returns a QMatrix from \c *this assuming the dimension is 2. * + * \warning this convertion might loss data if \c *this is not affine + * * This function is available only if the token EIGEN_QT_SUPPORT is defined. */ template<typename Scalar, int Dim> @@ -293,6 +298,43 @@ QMatrix Transform<Scalar,Dim>::toQMatrix(void) const other.coeffRef(0,1), other.coeffRef(1,1), other.coeffRef(0,2), other.coeffRef(1,2)); } + +/** Initialises \c *this from a QTransform assuming the dimension is 2. + * + * This function is available only if the token EIGEN_QT_SUPPORT is defined. + */ +template<typename Scalar, int Dim> +Transform<Scalar,Dim>::Transform(const QTransform& other) +{ + *this = other; +} + +/** Set \c *this from a QTransform assuming the dimension is 2. + * + * This function is available only if the token EIGEN_QT_SUPPORT is defined. + */ +template<typename Scalar, int Dim> +Transform<Scalar,Dim>& Transform<Scalar,Dim>::operator=(const QTransform& other) +{ + EIGEN_STATIC_ASSERT(Dim==2, you_did_a_programming_error); + m_matrix << other.m11(), other.m21(), other.dx(), + other.m12(), other.m22(), other.dy(), + other.m13(), other.m23(), other.m33(); + return *this; +} + +/** \returns a QTransform from \c *this assuming the dimension is 2. + * + * This function is available only if the token EIGEN_QT_SUPPORT is defined. + */ +template<typename Scalar, int Dim> +QMatrix Transform<Scalar,Dim>::toQTransform(void) const +{ + EIGEN_STATIC_ASSERT(Dim==2, you_did_a_programming_error); + return QTransform(other.coeffRef(0,0), other.coeffRef(1,0), other.coeffRef(2,0) + other.coeffRef(0,1), other.coeffRef(1,1), other.coeffRef(2,1) + other.coeffRef(0,2), other.coeffRef(1,2), other.coeffRef(2,2); +} #endif /********************* |