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Quadrupole.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
26namespace lsst {
27namespace afw {
28namespace geom {
29namespace ellipses {
30
31BaseCore::Registrar<Quadrupole> Quadrupole::registrar;
32
33std::string Quadrupole::getName() const { return "Quadrupole"; }
34
36 if (_matrix(0, 1) != _matrix(1, 0))
38 "Quadrupole matrix must be symmetric.");
39 if (getIxx() < 0 || getIyy() < 0)
41 "Quadrupole matrix cannot have negative diagonal elements.");
42 if (getDeterminant() < 0)
44 "Quadrupole matrix cannot have negative determinant.");
45}
46
47void Quadrupole::readParameters(double const* iter) {
48 setIxx(*iter++);
49 setIyy(*iter++);
50 setIxy(*iter++);
51}
52
53void Quadrupole::writeParameters(double* iter) const {
54 *iter++ = getIxx();
55 *iter++ = getIyy();
56 *iter++ = getIxy();
57}
58
59Quadrupole::Quadrupole(double ixx, double iyy, double ixy, bool normalize) {
60 setIxx(ixx);
61 setIyy(iyy);
62 setIxy(ixy);
63 if (normalize) this->normalize();
64}
65
66Quadrupole::Quadrupole(BaseCore::ParameterVector const& vector, bool normalize) {
67 setIxx(vector[IXX]);
68 setIyy(vector[IYY]);
69 setIxy(vector[IXY]);
70 if (normalize) this->normalize();
71}
72
73Quadrupole::Quadrupole(Matrix const& matrix, bool normalize) : _matrix(matrix) {
74 if (normalize) this->normalize();
75}
76
77void Quadrupole::_assignToQuadrupole(double& ixx, double& iyy, double& ixy) const {
78 ixx = getIxx();
79 iyy = getIyy();
80 ixy = getIxy();
81}
82
83BaseCore::Jacobian Quadrupole::_dAssignToQuadrupole(double& ixx, double& iyy, double& ixy) const {
84 ixx = getIxx();
85 iyy = getIyy();
86 ixy = getIxy();
87 return Jacobian::Identity();
88}
89
90void Quadrupole::_assignToAxes(double& a, double& b, double& theta) const {
92}
93
94BaseCore::Jacobian Quadrupole::_dAssignToAxes(double& a, double& b, double& theta) const {
95 return BaseCore::_dAssignQuadrupoleToAxes(getIxx(), getIyy(), getIxy(), a, b, theta);
96}
97
98void Quadrupole::_assignFromQuadrupole(double ixx, double iyy, double ixy) {
99 setIxx(ixx);
100 setIyy(iyy);
101 setIxy(ixy);
102}
103
104BaseCore::Jacobian Quadrupole::_dAssignFromQuadrupole(double ixx, double iyy, double ixy) {
105 setIxx(ixx);
106 setIyy(iyy);
107 setIxy(ixy);
108 return Jacobian::Identity();
109}
110
111void Quadrupole::_assignFromAxes(double a, double b, double theta) {
112 BaseCore::_assignAxesToQuadrupole(a, b, theta, _matrix(0, 0), _matrix(1, 1), _matrix(0, 1));
113 _matrix(1, 0) = _matrix(0, 1);
114}
115
116BaseCore::Jacobian Quadrupole::_dAssignFromAxes(double a, double b, double theta) {
117 Jacobian r = BaseCore::_dAssignAxesToQuadrupole(a, b, theta, _matrix(0, 0), _matrix(1, 1), _matrix(0, 1));
118 _matrix(1, 0) = _matrix(0, 1);
119 return r;
120}
121} // namespace ellipses
122} // namespace geom
123} // namespace afw
124} // namespace lsst
#define LSST_EXCEPT(type,...)
Create an exception with a given type.
Definition Exception.h:48
table::Key< int > b
static Jacobian _dAssignAxesToQuadrupole(double a, double b, double theta, double &ixx, double &iyy, double &ixy)
Return the size of the bounding box for the ellipse core.
Definition BaseCore.cc:231
Eigen::Vector3d ParameterVector
Parameter vector type.
Definition BaseCore.h:63
static void _assignAxesToQuadrupole(double a, double b, double theta, double &ixx, double &iyy, double &ixy)
Return the size of the bounding box for the ellipse core.
Definition BaseCore.cc:218
static Jacobian _dAssignQuadrupoleToAxes(double ixx, double iyy, double ixy, double &a, double &b, double &theta)
Return the size of the bounding box for the ellipse core.
Definition BaseCore.cc:193
static void _assignQuadrupoleToAxes(double ixx, double iyy, double ixy, double &a, double &b, double &theta)
Return the size of the bounding box for the ellipse core.
Definition BaseCore.cc:183
Eigen::Matrix3d Jacobian
Parameter Jacobian matrix type.
Definition BaseCore.h:64
Eigen::Matrix< double, 2, 2, Eigen::DontAlign > Matrix
Matrix type for the matrix representation of Quadrupole parameters.
Definition Quadrupole.h:52
void _assignToAxes(double &a, double &b, double &theta) const override
Return the size of the bounding box for the ellipse core.
Definition Quadrupole.cc:90
double getDeterminant() const
Return the determinant of the matrix representation.
Definition Quadrupole.h:83
void normalize() override
Put the parameters into a "standard form", and throw InvalidParameterError if they cannot be normaliz...
Definition Quadrupole.cc:35
Jacobian _dAssignToQuadrupole(double &ixx, double &iyy, double &ixy) const override
Return the size of the bounding box for the ellipse core.
Definition Quadrupole.cc:83
Quadrupole(double ixx=1.0, double iyy=1.0, double ixy=0.0, bool normalize=false)
Construct from parameter values.
Definition Quadrupole.cc:59
void _assignFromQuadrupole(double ixx, double iyy, double ixy) override
Return the size of the bounding box for the ellipse core.
Definition Quadrupole.cc:98
std::string getName() const override
Return a string that identifies this parametrization.
Definition Quadrupole.cc:33
void writeParameters(double *iter) const override
Return the size of the bounding box for the ellipse core.
Definition Quadrupole.cc:53
void _assignToQuadrupole(double &ixx, double &iyy, double &ixy) const override
Return the size of the bounding box for the ellipse core.
Definition Quadrupole.cc:77
Jacobian _dAssignToAxes(double &a, double &b, double &theta) const override
Return the size of the bounding box for the ellipse core.
Definition Quadrupole.cc:94
Jacobian _dAssignFromAxes(double a, double b, double theta) override
Return the size of the bounding box for the ellipse core.
void _assignFromAxes(double a, double b, double theta) override
Return the size of the bounding box for the ellipse core.
void readParameters(double const *iter) override
Return the size of the bounding box for the ellipse core.
Definition Quadrupole.cc:47
Jacobian _dAssignFromQuadrupole(double ixx, double iyy, double ixy) override
Return the size of the bounding box for the ellipse core.
Reports invalid arguments.
Definition Runtime.h:66