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LSST Data Management Base Package
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GridTransform.h
Go to the documentation of this file.
1// -*- lsst-c++ -*-
2
3/*
4 * LSST Data Management System
5 * Copyright 2008, 2009, 2010 LSST Corporation.
6 *
7 * This product includes software developed by the
8 * LSST Project (http://www.lsst.org/).
9 *
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the LSST License Statement and
21 * the GNU General Public License along with this program. If not,
22 * see <http://www.lsstcorp.org/LegalNotices/>.
23 */
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
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 ...
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.
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 ...
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.
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.
An affine coordinate transformation consisting of a linear transformation and an offset.
A 2D linear coordinate transformation.
Eigen::Matrix< double, 2, 2, Eigen::DontAlign > Matrix