lsst.afw g68453d69bf+914da4f383
GridTransform.h
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1// -*- lsst-c++ -*-
2
3/*
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24
25#ifndef LSST_AFW_GEOM_ELLIPSES_GridTransform_h_INCLUDED
26#define LSST_AFW_GEOM_ELLIPSES_GridTransform_h_INCLUDED
27
28/*
29 * Definitions for Ellipse::GridTransform and BaseCore::GridTransform.
30 *
31 * Note: do not include directly; use the main ellipse header file.
32 */
33
34#include "Eigen/Eigenvalues"
35
38
39namespace lsst {
40namespace afw {
41namespace geom {
42namespace ellipses {
43
49public:
51 using DerivativeMatrix = Eigen::Matrix<double, 4, 3>;
52
54 explicit GridTransform(BaseCore const& input);
55
57 operator lsst::geom::LinearTransform() const;
58
61
63 DerivativeMatrix d() const;
64
66 double getDeterminant() const;
67
72
73private:
74 BaseCore const& _input;
75 Eigen::SelfAdjointEigenSolver<Eigen::Matrix2d> _eig;
76};
77
83public:
85 using DerivativeMatrix = Eigen::Matrix<double, 6, 5>;
86
88 explicit GridTransform(Ellipse const& input);
89
92
94 DerivativeMatrix d() const;
95
97 double getDeterminant() const;
98
100 operator lsst::geom::AffineTransform() const;
101
104
105private:
106 Ellipse const& _input;
108};
109
111 return BaseCore::GridTransform(*this);
112}
113
115 return Ellipse::GridTransform(*this);
116}
117} // namespace ellipses
118} // namespace geom
119} // namespace afw
120} // namespace lsst
121
122#endif // !LSST_AFW_GEOM_ELLIPSES_GridTransform_h_INCLUDED
A temporary-only expression object representing an lsst::geom::LinearTransform that maps the ellipse ...
Definition: GridTransform.h:48
double getDeterminant() const
Return the determinant of the lsst::geom::LinearTransform.
lsst::geom::LinearTransform inverted() const
Return the inverse of the lsst::geom::LinearTransform;.
DerivativeMatrix d() const
Return the derivative of the transform with respect to input core.
GridTransform(BaseCore const &input)
Standard constructor.
Eigen::Matrix< double, 4, 3 > DerivativeMatrix
Matrix type for derivative with respect to ellipse parameters.
Definition: GridTransform.h:51
lsst::geom::LinearTransform::Matrix getMatrix() const
Return the transform matrix as an Eigen object.
A base class for parametrizations of the "core" of an ellipse - the ellipticity and size.
Definition: BaseCore.h:55
GridTransform const getGridTransform() const
Return the transform that maps the ellipse to the unit circle.
A temporary-only expression object representing an lsst::geom::AffineTransform that maps the Ellipse ...
Definition: GridTransform.h:82
double getDeterminant() const
Return the determinant of the lsst::geom::AffineTransform.
DerivativeMatrix d() const
Return the derivative of transform with respect to input ellipse.
lsst::geom::AffineTransform::Matrix getMatrix() const
Return the transform matrix as an Eigen object.
Eigen::Matrix< double, 6, 5 > DerivativeMatrix
Matrix type for derivative with respect to input ellipse parameters.
Definition: GridTransform.h:85
lsst::geom::AffineTransform inverted() const
Return the inverse of the AffineTransform.
GridTransform(Ellipse const &input)
Standard constructor.
An ellipse defined by an arbitrary BaseCore and a center point.
Definition: Ellipse.h:51
GridTransform const getGridTransform() const
Return the transform that maps the ellipse to the unit circle.
Eigen::Matrix< double, 2, 2, Eigen::DontAlign > Matrix
A base class for image defects.