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LSST Data Management Base Package
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Transformer.h
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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_Transformer_h_INCLUDED
26#define LSST_AFW_GEOM_ELLIPSES_Transformer_h_INCLUDED
27
28/*
29 * Definitions for Ellipse::Transformer and BaseCore::Transformer.
30 *
31 * Note: do not include directly; use the main ellipse header file.
32 */
33
36
37namespace lsst {
38namespace afw {
39namespace geom {
40namespace ellipses {
41
50public:
52 using DerivativeMatrix = Eigen::Matrix3d;
53
55 using TransformDerivativeMatrix = Eigen::Matrix<double, 3, 4>;
56
59 : input(input_), transform(transform_) {}
60
63
65 void inPlace();
66
67 void apply(BaseCore &result) const;
68
70 DerivativeMatrix d() const;
71
74
77};
78
87public:
89 using DerivativeMatrix = Eigen::Matrix<double, 5, 5>;
90
92 using TransformDerivativeMatrix = Eigen::Matrix<double, 5, 6>;
93
96 : input(input_), transform(transform_) {}
97
100
102 void inPlace();
103
104 void apply(Ellipse &other) const;
105
107 DerivativeMatrix d() const;
108
111
114};
115
119
127
129 return Ellipse::Transformer(const_cast<Ellipse &>(*this), transform);
130}
131
133 : _core(other.input.getCore().transform(other.transform.getLinear()).copy()),
134 _center(other.transform(other.input.getCenter())) {}
135} // namespace ellipses
136} // namespace geom
137} // namespace afw
138} // namespace lsst
139
140#endif // !LSST_AFW_GEOM_ELLIPSES_Transformer_h_INCLUDED
A temporary-only expression object for ellipse core transformations.
Definition Transformer.h:49
DerivativeMatrix d() const
Return the derivative of transformed core with respect to input core.
void inPlace()
Transform the ellipse core in-place.
TransformDerivativeMatrix dTransform() const
Return the derivative of transformed core with respect to transform parameters.
lsst::geom::LinearTransform const & transform
transform object
Definition Transformer.h:76
Transformer(BaseCore &input_, lsst::geom::LinearTransform const &transform_)
Standard constructor.
Definition Transformer.h:58
std::shared_ptr< BaseCore > copy() const
Return a new transformed ellipse core.
Eigen::Matrix< double, 3, 4 > TransformDerivativeMatrix
Matrix type for derivative with respect to transform parameters.
Definition Transformer.h:55
BaseCore & input
input core to be transformed
Definition Transformer.h:75
Eigen::Matrix3d DerivativeMatrix
Matrix type for derivative with respect to input ellipse parameters.
Definition Transformer.h:52
BaseCore()=default
Return the size of the bounding box for the ellipse core.
Transformer transform(lsst::geom::LinearTransform const &transform)
Return the transform that maps the ellipse to the unit circle.
A temporary-only expression object for ellipse transformations.
Definition Transformer.h:86
Transformer(Ellipse &input_, lsst::geom::AffineTransform const &transform_)
Standard constructor.
Definition Transformer.h:95
Ellipse & input
input ellipse to be transformed
void inPlace()
Transform the ellipse in-place.
Eigen::Matrix< double, 5, 5 > DerivativeMatrix
Matrix type for derivative with respect to input ellipse parameters.
Definition Transformer.h:89
TransformDerivativeMatrix dTransform() const
Return the derivative of transform output ellipse with respect to transform parameters.
lsst::geom::AffineTransform const & transform
transform object
std::shared_ptr< Ellipse > copy() const
Return a new transformed ellipse.
DerivativeMatrix d() const
Return the derivative of transform output ellipse with respect to input ellipse.
Eigen::Matrix< double, 5, 6 > TransformDerivativeMatrix
Matrix type for derivative with respect to transform parameters.
Definition Transformer.h:92
lsst::geom::Point2D const & getCenter() const
Return the center point.
Definition Ellipse.h:62
BaseCore const & getCore() const
Return the ellipse core.
Definition Ellipse.h:71
Ellipse(BaseCore const &core, lsst::geom::Point2D const &center=lsst::geom::Point2D())
Return the transform that maps the ellipse to the unit circle.
Definition Ellipse.h:164
Transformer transform(lsst::geom::AffineTransform const &transform)
An affine coordinate transformation consisting of a linear transformation and an offset.
A 2D linear coordinate transformation.