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QTransform conversion and doc

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This commit is contained in:
Gael Guennebaud
2008-09-01 06:33:19 +00:00
parent 994629721a
commit 6825c8dd6b
5 changed files with 84 additions and 248 deletions
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46
Eigen/src/Geometry/Transform.h
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@@ -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);
@@ -282,6 +285,8 @@ 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.
*/
@@ -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
/*********************