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LSST Data Management Base Package
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Transformer.cc
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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 */
25
26#include "Eigen/LU"
27
28namespace lsst {
29namespace afw {
30namespace geom {
31namespace ellipses {
32
38
39void BaseCore::Transformer::inPlace() { apply(input); }
40
42 Eigen::Matrix2d m;
43 input._assignToQuadrupole(m(0, 0), m(1, 1), m(0, 1));
44 m(1, 0) = m(0, 1);
45 m = transform.getMatrix() * m * transform.getMatrix().transpose();
46 result._assignFromQuadrupole(m(0, 0), m(1, 1), m(0, 1));
47}
48
50 std::shared_ptr<BaseCore> output(input.clone());
51 Eigen::Matrix2d m;
52 Jacobian rhs = input._dAssignToQuadrupole(m(0, 0), m(1, 1), m(0, 1));
53 m(1, 0) = m(0, 1);
54 m = transform.getMatrix() * m * transform.getMatrix().transpose();
55 Jacobian lhs = output->_dAssignFromQuadrupole(m(0, 0), m(1, 1), m(0, 1));
56 Jacobian mid = Jacobian::Zero();
57 mid(0, 0) = transform[lsst::geom::LinearTransform::XX] * transform[lsst::geom::LinearTransform::XX];
58 mid(0, 1) = transform[lsst::geom::LinearTransform::XY] * transform[lsst::geom::LinearTransform::XY];
59 mid(0, 2) = 2 * transform[lsst::geom::LinearTransform::XY] * transform[lsst::geom::LinearTransform::XX];
60 mid(1, 0) = transform[lsst::geom::LinearTransform::YX] * transform[lsst::geom::LinearTransform::YX];
61 mid(1, 1) = transform[lsst::geom::LinearTransform::YY] * transform[lsst::geom::LinearTransform::YY];
62 mid(1, 2) = 2 * transform[lsst::geom::LinearTransform::YY] * transform[lsst::geom::LinearTransform::YX];
63 mid(2, 0) = transform[lsst::geom::LinearTransform::YX] * transform[lsst::geom::LinearTransform::XX];
64 mid(2, 1) = transform[lsst::geom::LinearTransform::YY] * transform[lsst::geom::LinearTransform::XY];
65 mid(2, 2) = transform[lsst::geom::LinearTransform::XX] * transform[lsst::geom::LinearTransform::YY] +
67 return lhs * mid * rhs;
68}
69
71 std::shared_ptr<BaseCore> output(input.clone());
72 Eigen::Matrix2d m;
73 input._assignToQuadrupole(m(0, 0), m(1, 1), m(0, 1));
74 Eigen::Matrix<double, 3, 4> mid = Eigen::Matrix<double, 3, 4>::Zero();
75 m(1, 0) = m(0, 1);
76 mid(0, lsst::geom::LinearTransform::XX) = 2.0 * (transform[lsst::geom::LinearTransform::XX] * m(0, 0) +
77 transform[lsst::geom::LinearTransform::XY] * m(0, 1));
78 mid(0, lsst::geom::LinearTransform::XY) = 2.0 * (transform[lsst::geom::LinearTransform::XX] * m(0, 1) +
79 transform[lsst::geom::LinearTransform::XY] * m(1, 1));
80 mid(1, lsst::geom::LinearTransform::YX) = 2.0 * (transform[lsst::geom::LinearTransform::YX] * m(0, 0) +
81 transform[lsst::geom::LinearTransform::YY] * m(0, 1));
82 mid(1, lsst::geom::LinearTransform::YY) = 2.0 * (transform[lsst::geom::LinearTransform::YX] * m(0, 1) +
83 transform[lsst::geom::LinearTransform::YY] * m(1, 1));
85 transform[lsst::geom::LinearTransform::YY] * m(0, 1);
87 transform[lsst::geom::LinearTransform::YY] * m(1, 1);
89 transform[lsst::geom::LinearTransform::XY] * m(0, 1);
91 transform[lsst::geom::LinearTransform::XY] * m(1, 1);
92 m = transform.getMatrix() * m * transform.getMatrix().transpose();
93 Jacobian lhs = output->_dAssignFromQuadrupole(m(0, 0), m(1, 1), m(0, 1));
94 return lhs * mid;
95}
96
98 std::shared_ptr<Ellipse> r = std::make_shared<Ellipse>(
99 input.getCore().transform(transform.getLinear()).copy(), transform(input.getCenter()));
100 return r;
101}
102
104 input.setCenter(transform(input.getCenter()));
105 input.getCore().transform(transform.getLinear()).inPlace();
106}
107
109 DerivativeMatrix r = DerivativeMatrix::Zero();
110 r.block<2, 2>(3, 3) = transform.getLinear().getMatrix();
111 r.block<3, 3>(0, 0) = input.getCore().transform(transform.getLinear()).d();
112 return r;
113}
114
116 TransformDerivativeMatrix r = TransformDerivativeMatrix::Zero();
117 r.block<2, 6>(3, 0) = transform.dTransform(input.getCenter());
118 r.block<3, 4>(0, 0) = input.getCore().transform(transform.getLinear()).dTransform();
119 return r;
120}
121} // namespace ellipses
122} // namespace geom
123} // namespace afw
124} // namespace lsst
py::object result
Definition _schema.cc:429
int m
Definition SpanSet.cc:48
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.
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
A base class for parametrizations of the "core" of an ellipse - the ellipticity and size.
Definition BaseCore.h:55
std::shared_ptr< BaseCore > clone() const
Deep-copy the Core.
Definition BaseCore.h:82
Eigen::Matrix3d Jacobian
Parameter Jacobian matrix type.
Definition BaseCore.h:64
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.
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