LSSTApplications  10.0-2-g4f67435,11.0.rc2+1,11.0.rc2+12,11.0.rc2+3,11.0.rc2+4,11.0.rc2+5,11.0.rc2+6,11.0.rc2+7,11.0.rc2+8
LSSTDataManagementBasePackage
GridTransform.h
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  */
24 
25 #ifndef LSST_AFW_GEOM_ELLIPSES_GridTransform_h_INCLUDED
26 #define LSST_AFW_GEOM_ELLIPSES_GridTransform_h_INCLUDED
27 
35 #include "Eigen/Eigenvalues"
36 
39 
40 namespace lsst { namespace afw { namespace geom { namespace ellipses {
41 
47 public:
48 
50  typedef Eigen::Matrix<double,4,3> DerivativeMatrix;
51 
53  explicit GridTransform(BaseCore const & input);
54 
56  operator LinearTransform () const;
57 
60 
62  DerivativeMatrix d() const;
63 
65  double getDeterminant() const;
66 
68  LinearTransform invert() const;
69 
70 private:
71 
72  BaseCore const & _input;
73  Eigen::SelfAdjointEigenSolver<Eigen::Matrix2d> _eig;
74 };
75 
81 public:
82 
84  typedef Eigen::Matrix<double,6,5> DerivativeMatrix;
85 
87  explicit GridTransform(Ellipse const & input);
88 
91 
93  DerivativeMatrix d() const;
94 
96  double getDeterminant() const;
97 
99  operator AffineTransform () const;
100 
102  AffineTransform invert() const;
103 
104 private:
105 
106  Ellipse const & _input;
108 };
109 
111  return BaseCore::GridTransform(*this);
112 }
113 
115  return Ellipse::GridTransform(*this);
116 }
117 
118 }}}} // namespace lsst::afw::geom::ellipses
119 
120 #endif // !LSST_AFW_GEOM_ELLIPSES_GridTransform_h_INCLUDED
DerivativeMatrix d() const
Return the derivative of transform with respect to input ellipse.
Eigen::Matrix< double, 4, 3 > DerivativeMatrix
Matrix type for derivative with respect to ellipse parameters.
Definition: GridTransform.h:50
double getDeterminant() const
Return the determinant of the AffineTransform.
A temporary-only expression object representing a LinearTransform that maps the ellipse core to a uni...
Definition: GridTransform.h:46
GridTransform const getGridTransform() const
Return the transform that maps the ellipse to the unit circle.
Eigen::SelfAdjointEigenSolver< Eigen::Matrix2d > _eig
Definition: GridTransform.h:73
AffineTransform::Matrix getMatrix() const
Return the transform matrix as an Eigen object.
Eigen::Matrix< double, 2, 2, Eigen::DontAlign > Matrix
GridTransform(BaseCore const &input)
Standard constructor.
A 2D linear coordinate transformation.
DerivativeMatrix d() const
Return the derivative of the transform with respect to input core.
AffineTransform invert() const
Return the inverse of the AffineTransform.
LinearTransform invert() const
Return the inverse of the LinearTransform;.
An affine coordinate transformation consisting of a linear transformation and an offset.
An ellipse defined by an arbitrary BaseCore and a center point.
Definition: Ellipse.h:50
Eigen::Matrix< double, 6, 5 > DerivativeMatrix
Matrix type for derivative with respect to input ellipse parameters.
Definition: GridTransform.h:84
Forward declarations, typedefs, and definitions for Ellipse.
A base class for parametrizations of the &quot;core&quot; of an ellipse - the ellipticity and size...
Definition: BaseCore.h:54
A temporary-only expression object representing an AffineTransform that maps the Ellipse to a unit ci...
Definition: GridTransform.h:80
double getDeterminant() const
Return the determinant of the LinearTransform.
GridTransform const getGridTransform() const
Return the transform that maps the ellipse to the unit circle.
LinearTransform::Matrix getMatrix() const
Return the transform matrix as an Eigen object.
GridTransform(Ellipse const &input)
Standard constructor.