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Add smart cast functions and ctor with scalar conversion (explicit)

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to all classes of the Geometry module. By smart I mean that if current
type == new type, then it returns a const reference to *this => zero overhead
This commit is contained in:
Gael Guennebaud
2008-10-25 22:38:22 +00:00
parent 568a7e8eba
commit e5b8a59cfa
9 changed files with 361 additions and 224 deletions
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16
Eigen/src/Geometry/Transform.h
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@@ -241,9 +241,25 @@ public:
inline const MatrixType inverse(TransformTraits traits = Affine) const;
/** \returns a const pointer to the column major internal matrix */
const Scalar* data() const { return m_matrix.data(); }
/** \returns a non-const pointer to the column major internal matrix */
Scalar* data() { return m_matrix.data(); }
/** \returns \c *this with scalar type casted to \a NewScalarType
*
* Note that if \a NewScalarType is equal to the current scalar type of \c *this
* then this function smartly returns a const reference to \c *this.
*/
template<typename NewScalarType>
typename ei_cast_return_type<Transform,Transform<NewScalarType,Dim> >::type cast() const
{ return typename ei_cast_return_type<Transform,Transform<NewScalarType,Dim> >::type(*this); }
/** Copy constructor with scalar type conversion */
template<typename OtherScalarType>
explicit Transform(const Transform<OtherScalarType,Dim>& other)
{ m_matrix = other.matrix().template cast<OtherScalarType>(); }
protected:
};