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Convolution.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
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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.
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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 */
26
27namespace lsst {
28namespace afw {
29namespace geom {
30namespace ellipses {
31
33 std::shared_ptr<BaseCore> r(self.clone());
34 apply(*r);
35 return r;
36}
37
38void BaseCore::Convolution::inPlace() { apply(self); }
39
41 double ixx1, iyy1, ixy1;
42 double ixx2, iyy2, ixy2;
43 Jacobian rhs = self._dAssignToQuadrupole(ixx1, iyy1, ixy1);
44 other._assignToQuadrupole(ixx2, iyy2, ixy2);
45 std::shared_ptr<BaseCore> convolved(self.clone());
46 Jacobian lhs = convolved->_dAssignFromQuadrupole(ixx1 + ixx2, iyy1 + iyy2, ixy1 + ixy2);
47 return lhs * rhs;
48}
49
51 double ixx1, iyy1, ixy1;
52 double ixx2, iyy2, ixy2;
53 self._assignToQuadrupole(ixx1, iyy1, ixy1);
54 other._assignToQuadrupole(ixx2, iyy2, ixy2);
55 result._assignFromQuadrupole(ixx1 + ixx2, iyy1 + iyy2, ixy1 + ixy2);
56}
57
58std::shared_ptr<Ellipse> Ellipse::Convolution::copy() const {
60 self.getCore().convolve(other.getCore()).copy(),
61 lsst::geom::Point2D(self.getCenter() + lsst::geom::Extent2D(other.getCenter())));
62}
63
64void Ellipse::Convolution::inPlace() {
65 self.getCore().convolve(other.getCore()).inPlace();
66 self.setCenter(self.getCenter() + lsst::geom::Extent2D(other.getCenter()));
67}
68
69Ellipse::Convolution::DerivativeMatrix Ellipse::Convolution::d() const {
70 Ellipse::Convolution::DerivativeMatrix result = Ellipse::Convolution::DerivativeMatrix::Identity();
71 result.block<3, 3>(0, 0) = self.getCore().convolve(other.getCore()).d();
72 return result;
73}
74
75Ellipse::Ellipse(Convolution const& convolution)
76 : _core(convolution.self.getCore().convolve(convolution.other.getCore()).copy()),
77 _center(convolution.self.getCenter() + lsst::geom::Extent2D(convolution.other.getCenter())) {}
78} // namespace ellipses
79} // namespace geom
80} // namespace afw
81} // namespace lsst
py::object result
Definition _schema.cc:429
Eigen::Matrix3d DerivativeMatrix
Matrix type for derivative with respect to input ellipse parameters.
Definition Convolution.h:47
std::shared_ptr< BaseCore > copy() const
Return a new convolved ellipse core.
void inPlace()
Convolve the ellipse core in-place.
DerivativeMatrix d() const
Return the derivative of convolved core with respect to self.
A base class for parametrizations of the "core" of an ellipse - the ellipticity and size.
Definition BaseCore.h:55
Eigen::Matrix3d Jacobian
Parameter Jacobian matrix type.
Definition BaseCore.h:64
Eigen::Matrix< double, 5, 5 > DerivativeMatrix
Matrix type for derivative with respect to input ellipse parameters.
Definition Convolution.h:73
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
T make_shared(T... args)