lsst.shapelet  21.0.0+8829bf0056
HermiteTransformMatrix.h
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23 
24 #ifndef LSST_AFW_MATH_SHAPELETS_HermiteTransformMatrix
25 #define LSST_AFW_MATH_SHAPELETS_HermiteTransformMatrix
26 
27 #include "Eigen/Core"
28 
29 #include "lsst/geom.h"
31 
32 namespace lsst { namespace shapelet {
33 
55 public:
56 
58  Eigen::MatrixXd compute(Eigen::Matrix2d const & transform) const {
59  return compute(transform, _order);
60  }
61 
63  Eigen::MatrixXd compute(geom::LinearTransform const & transform) const {
64  return compute(transform.getMatrix(), _order);
65  }
66 
68  Eigen::MatrixXd compute(Eigen::Matrix2d const & transform, int order) const;
69 
71  Eigen::MatrixXd compute(geom::LinearTransform const & transform, int order) const {
72  return compute(transform.getMatrix(), order);
73  }
74 
80  Eigen::MatrixXd getCoefficientMatrix() const { return _coeffFwd; }
81 
87  Eigen::MatrixXd getInverseCoefficientMatrix() const { return _coeffInv; }
88 
90  int getOrder() const { return _order; }
91 
93  explicit HermiteTransformMatrix(int order);
94 
95 private:
96  int _order;
97  Eigen::MatrixXd _coeffFwd;
98  Eigen::MatrixXd _coeffInv;
99 };
100 
101 }} // namespace lsst::shapelet
102 
103 #endif // !LSST_AFW_MATH_SHAPELETS_HermiteTransformMatrix
lsst::shapelet::HermiteTransformMatrix::compute
Eigen::MatrixXd compute(geom::LinearTransform const &transform) const
Compute the matrix for a new linear transform.
Definition: HermiteTransformMatrix.h:63
lsst::geom::LinearTransform
lsst::shapelet::HermiteTransformMatrix::HermiteTransformMatrix
HermiteTransformMatrix(int order)
Construct an instance able to compute the transform matrix at up to the given order.
lsst::shapelet::HermiteTransformMatrix::getInverseCoefficientMatrix
Eigen::MatrixXd getInverseCoefficientMatrix() const
Return the matrix that maps (1-d) alternate Hermite polynomials to regular polynomials.
Definition: HermiteTransformMatrix.h:87
geom.h
lsst
lsst::shapelet::HermiteTransformMatrix
A class that computes a matrix that applies a linear transform to a 2-d Hermite polynomial expansion.
Definition: HermiteTransformMatrix.h:54
lsst::shapelet::HermiteTransformMatrix::compute
Eigen::MatrixXd compute(geom::LinearTransform const &transform, int order) const
Compute the matrix for a new linear transform at the given order (must be <= getOrder()).
Definition: HermiteTransformMatrix.h:71
constants.h
Constants, typedefs, and general-purpose functions for shapelets library.
lsst::shapelet::HermiteTransformMatrix::getCoefficientMatrix
Eigen::MatrixXd getCoefficientMatrix() const
Return the matrix that maps (1-d) regular polynomials to the alternate Hermite polynomials.
Definition: HermiteTransformMatrix.h:80
lsst::shapelet::HermiteTransformMatrix::getOrder
int getOrder() const
Return the maximum order at which the matrix can be computed.
Definition: HermiteTransformMatrix.h:90
transform
table::Key< int > transform
lsst::shapelet::HermiteTransformMatrix::compute
Eigen::MatrixXd compute(Eigen::Matrix2d const &transform, int order) const
Compute the matrix for a new linear transform at the given order (must be <= getOrder()).
lsst::shapelet::HermiteTransformMatrix::compute
Eigen::MatrixXd compute(Eigen::Matrix2d const &transform) const
Compute the matrix for a new linear transform.
Definition: HermiteTransformMatrix.h:58