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LSST Data Management Base Package
GaussHermiteProjection.h
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1// -*- LSST-C++ -*-
2/*
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23
24#ifndef LSST_AFW_MATH_SHAPELETS_GaussHermiteProjection
25#define LSST_AFW_MATH_SHAPELETS_GaussHermiteProjection
26
27#include "Eigen/Core"
29#include "lsst/geom.h"
31
32namespace lsst { namespace shapelet {
33
35public:
36
38 Eigen::MatrixXd compute(
39 afw::geom::ellipses::Quadrupole const & inputEllipse, int inputOrder,
40 afw::geom::ellipses::Quadrupole const & outputEllipse, int outputOrder
41 ) const {
42 return compute(
43 inputEllipse.getGridTransform().getMatrix(), inputOrder,
44 outputEllipse.getGridTransform().getMatrix(), outputOrder
45 );
46 }
47
49 Eigen::MatrixXd compute(
50 geom::LinearTransform const & inputTransform, int inputOrder,
51 geom::LinearTransform const & outputTransform, int outputOrder
52 ) const {
53 return compute(
54 inputTransform.getMatrix(), inputOrder,
55 outputTransform.getMatrix(), outputOrder
56 );
57 }
58
60 Eigen::MatrixXd compute(
61 Eigen::Matrix2d const & inputTransform, int inputOrder,
62 Eigen::Matrix2d const & outputTransform, int outputOrder
63 ) const;
64
65 int getMaxOrder() const { return _htm.getOrder(); }
66
67 explicit GaussHermiteProjection(int maxOrder) : _htm(maxOrder) {}
68
69private:
71};
72}} // namespace lsst::shapelet
73
74#endif // !LSST_AFW_MATH_SHAPELETS_GaussHermiteProjection
lsst::geom::LinearTransform::Matrix getMatrix() const
Return the transform matrix as an Eigen object.
GridTransform const getGridTransform() const
Return the transform that maps the ellipse to the unit circle.
An ellipse core with quadrupole moments as parameters.
Definition: Quadrupole.h:47
A 2D linear coordinate transformation.
Matrix const & getMatrix() const noexcept
Eigen::MatrixXd compute(afw::geom::ellipses::Quadrupole const &inputEllipse, int inputOrder, afw::geom::ellipses::Quadrupole const &outputEllipse, int outputOrder) const
Compute a matrix that projects from one shapelet basis ellipse to another.
Eigen::MatrixXd compute(geom::LinearTransform const &inputTransform, int inputOrder, geom::LinearTransform const &outputTransform, int outputOrder) const
Compute a matrix that projects from one shapelet basis "grid transform" to another.
Eigen::MatrixXd compute(Eigen::Matrix2d const &inputTransform, int inputOrder, Eigen::Matrix2d const &outputTransform, int outputOrder) const
Compute a matrix that projects from one shapelet basis "grid transform" to another.
A class that computes a matrix that applies a linear transform to a 2-d Hermite polynomial expansion.
int getOrder() const
Return the maximum order at which the matrix can be computed.
A base class for image defects.