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00025 #ifndef EIGEN_MISC_IMAGE_H
00026 #define EIGEN_MISC_IMAGE_H
00027
00028 namespace Eigen {
00029
00030 namespace internal {
00031
00035 template<typename DecompositionType>
00036 struct traits<image_retval_base<DecompositionType> >
00037 {
00038 typedef typename DecompositionType::MatrixType MatrixType;
00039 typedef Matrix<
00040 typename MatrixType::Scalar,
00041 MatrixType::RowsAtCompileTime,
00042
00043 Dynamic,
00044 MatrixType::Options,
00045 MatrixType::MaxRowsAtCompileTime,
00046 MatrixType::MaxColsAtCompileTime
00047 > ReturnType;
00048 };
00049
00050 template<typename _DecompositionType> struct image_retval_base
00051 : public ReturnByValue<image_retval_base<_DecompositionType> >
00052 {
00053 typedef _DecompositionType DecompositionType;
00054 typedef typename DecompositionType::MatrixType MatrixType;
00055 typedef ReturnByValue<image_retval_base> Base;
00056 typedef typename Base::Index Index;
00057
00058 image_retval_base(const DecompositionType& dec, const MatrixType& originalMatrix)
00059 : m_dec(dec), m_rank(dec.rank()),
00060 m_cols(m_rank == 0 ? 1 : m_rank),
00061 m_originalMatrix(originalMatrix)
00062 {}
00063
00064 inline Index rows() const { return m_dec.rows(); }
00065 inline Index cols() const { return m_cols; }
00066 inline Index rank() const { return m_rank; }
00067 inline const DecompositionType& dec() const { return m_dec; }
00068 inline const MatrixType& originalMatrix() const { return m_originalMatrix; }
00069
00070 template<typename Dest> inline void evalTo(Dest& dst) const
00071 {
00072 static_cast<const image_retval<DecompositionType>*>(this)->evalTo(dst);
00073 }
00074
00075 protected:
00076 const DecompositionType& m_dec;
00077 Index m_rank, m_cols;
00078 const MatrixType& m_originalMatrix;
00079 };
00080
00081 }
00082
00083 #define EIGEN_MAKE_IMAGE_HELPERS(DecompositionType) \
00084 typedef typename DecompositionType::MatrixType MatrixType; \
00085 typedef typename MatrixType::Scalar Scalar; \
00086 typedef typename MatrixType::RealScalar RealScalar; \
00087 typedef typename MatrixType::Index Index; \
00088 typedef Eigen::internal::image_retval_base<DecompositionType> Base; \
00089 using Base::dec; \
00090 using Base::originalMatrix; \
00091 using Base::rank; \
00092 using Base::rows; \
00093 using Base::cols; \
00094 image_retval(const DecompositionType& dec, const MatrixType& originalMatrix) \
00095 : Base(dec, originalMatrix) {}
00096
00097 }
00098
00099 #endif // EIGEN_MISC_IMAGE_H