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LSST Data Management Base Package
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Parametric.cc
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 */
25
26namespace lsst {
27namespace afw {
28namespace geom {
29namespace ellipses {
30
31Parametric::Parametric(Ellipse const& ellipse) : _center(ellipse.getCenter()) {
32 double a, b, theta;
33 ellipse.getCore()._assignToAxes(a, b, theta);
34 double c = std::cos(theta);
35 double s = std::sin(theta);
36 _u = lsst::geom::Extent2D(a * c, a * s);
37 _v = lsst::geom::Extent2D(-b * s, b * c);
38}
39} // namespace ellipses
40} // namespace geom
41} // namespace afw
42} // namespace lsst
table::Key< int > b
table::Key< int > a
virtual void _assignToAxes(double &a, double &b, double &theta) const =0
Return the size of the bounding box for the ellipse core.
An ellipse defined by an arbitrary BaseCore and a center point.
Definition Ellipse.h:51
BaseCore const & getCore() const
Return the ellipse core.
Definition Ellipse.h:71
Parametric(Ellipse const &ellipse)
Definition Parametric.cc:31
T cos(T... args)
Extent< double, 2 > Extent2D
Definition Extent.h:400
T sin(T... args)