LSSTApplications  11.0-24-g0a022a1,14.0+64,15.0,15.0+1,15.0-1-g14e9bfd,15.0-1-g1eca518,15.0-1-g499c38d,15.0-1-g60afb23,15.0-1-g6668b0b,15.0-1-g788a293,15.0-1-g82223af,15.0-1-ga91101e,15.0-1-gae1598d,15.0-1-gc45031d,15.0-1-gd076f1f,15.0-1-gf4f1c34,15.0-1-gfe1617d,15.0-16-g953e39cab,15.0-2-g2010ef9,15.0-2-g33d94b3,15.0-2-g5218728,15.0-2-g947dc0d,15.0-3-g9103c06,15.0-3-ga03b4ca,15.0-3-ga659d1f3,15.0-3-ga695220+2,15.0-3-gaec6799,15.0-3-gb7a597c,15.0-3-gd5b9ff95,15.0-4-g0478fed+2,15.0-4-g45f767a,15.0-4-gff20472+2,15.0-6-ge2d9597
LSSTDataManagementBasePackage
Functor.h
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1 // -*- lsst-c++ -*-
2 
3 /*
4  * LSST Data Management System
5  * Copyright 2015 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 /*
26  * Functor classes used by SeparableXYTransform.
27  */
28 
29 #ifndef LSST_AFW_GEOM_FUNCTOR_H
30 #define LSST_AFW_GEOM_FUNCTOR_H
31 
32 #include <string>
33 #include <memory>
34 #include "lsst/base.h"
35 #include "lsst/daf/base.h"
36 
37 namespace lsst {
38 namespace afw {
39 namespace geom {
40 
50 class Functor : public daf::base::Citizen {
51 public:
56  explicit Functor(std::string const& name);
57 
58  Functor(Functor const &);
59  Functor(Functor &&);
60  Functor &operator=(Functor const &);
62 
63  virtual ~Functor() = default;
64 
65  virtual std::shared_ptr<Functor> clone() const = 0;
66 
68  virtual double operator()(double x) const = 0;
69 
81  virtual double inverse(double y, double tol = 1e-10, unsigned int maxiter = 1000) const;
82 
86  virtual double derivative(double x) const = 0;
87 
88 private:
89  std::string _name;
90 };
91 
95 class LinearFunctor : public Functor {
96 public:
97  LinearFunctor(double slope, double intercept);
98 
103 
104  ~LinearFunctor() = default;
105 
106  virtual std::shared_ptr<Functor> clone() const;
107 
108  virtual double operator()(double x) const;
109 
110  virtual double derivative(double x) const;
111 
112 private:
113  double _slope;
114  double _intercept;
115 };
116 
117 } // namespace geom
118 } // namespace af
119 } // namespace lsst
120 
121 #endif // LSST_AFW_GEOM_FUNCTOR_H
Basic LSST definitions.
virtual double operator()(double x) const =0
int y
Definition: SpanSet.cc:43
Functor & operator=(Functor const &)
STL class.
virtual double inverse(double y, double tol=1e-10, unsigned int maxiter=1000) const
Definition: Functor.cc:42
Concrete implementation of Functor subclass for testing.
Definition: Functor.h:95
A base class for image defects.
Definition: cameraGeom.dox:3
virtual double derivative(double x) const =0
virtual std::shared_ptr< Functor > clone() const =0
double x
Abstract base class for function objects.
Definition: Functor.h:50
Citizen is a class that should be among all LSST classes base classes, and handles basic memory manag...
Definition: Citizen.h:53
Functor(std::string const &name)
Definition: Functor.cc:35
virtual ~Functor()=default