LSSTApplications  17.0+11,17.0+34,17.0+56,17.0+57,17.0+59,17.0+7,17.0-1-g377950a+33,17.0.1-1-g114240f+2,17.0.1-1-g4d4fbc4+28,17.0.1-1-g55520dc+49,17.0.1-1-g5f4ed7e+52,17.0.1-1-g6dd7d69+17,17.0.1-1-g8de6c91+11,17.0.1-1-gb9095d2+7,17.0.1-1-ge9fec5e+5,17.0.1-1-gf4e0155+55,17.0.1-1-gfc65f5f+50,17.0.1-1-gfc6fb1f+20,17.0.1-10-g87f9f3f+1,17.0.1-11-ge9de802+16,17.0.1-16-ga14f7d5c+4,17.0.1-17-gc79d625+1,17.0.1-17-gdae4c4a+8,17.0.1-2-g26618f5+29,17.0.1-2-g54f2ebc+9,17.0.1-2-gf403422+1,17.0.1-20-g2ca2f74+6,17.0.1-23-gf3eadeb7+1,17.0.1-3-g7e86b59+39,17.0.1-3-gb5ca14a,17.0.1-3-gd08d533+40,17.0.1-30-g596af8797,17.0.1-4-g59d126d+4,17.0.1-4-gc69c472+5,17.0.1-6-g5afd9b9+4,17.0.1-7-g35889ee+1,17.0.1-7-gc7c8782+18,17.0.1-9-gc4bbfb2+3,w.2019.22
LSSTDataManagementBasePackage
PixelRegion.h
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1 // -*- lsst-c++ -*-
2 /*
3  * LSST Data Management System
4  * Copyright 2008, 2009, 2010 LSST Corporation.
5  *
6  * This product includes software developed by the
7  * LSST Project (http://www.lsst.org/).
8  *
9  * This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation, either version 3 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
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20  * the GNU General Public License along with this program. If not,
21  * see <http://www.lsstcorp.org/LegalNotices/>.
22  */
23 
24 #ifndef LSST_AFW_GEOM_ELLIPSES_PixelRegion_h_INCLUDED
25 #define LSST_AFW_GEOM_ELLIPSES_PixelRegion_h_INCLUDED
26 
27 #include "boost/iterator/iterator_facade.hpp"
28 
29 #include "lsst/geom/Box.h"
30 #include "lsst/afw/geom/Span.h"
32 
33 namespace lsst {
34 namespace afw {
35 namespace geom {
36 namespace ellipses {
37 
38 class PixelRegion final {
39 public:
40  class Iterator;
41 
42  Iterator begin() const;
43  Iterator end() const;
44 
45  lsst::geom::Box2I const& getBBox() const { return _bbox; }
46 
47  Span const getSpanAt(int y) const;
48 
49  explicit PixelRegion(Ellipse const& ellipse);
50 
51  PixelRegion(PixelRegion const&) = default;
52  PixelRegion(PixelRegion&&) = default;
53  PixelRegion& operator=(PixelRegion const&) = default;
54  PixelRegion& operator=(PixelRegion&&) = default;
55  ~PixelRegion() = default;
56 
57 private:
58  lsst::geom::Point2D _center;
59  double _detQ;
60  double _invQxx;
61  double _alpha;
62  lsst::geom::Box2I _bbox;
63 };
64 
65 class PixelRegion::Iterator : public boost::iterator_facade<PixelRegion::Iterator, Span const,
66  boost::random_access_traversal_tag> {
67 public:
68  explicit Iterator(Span const& s = Span(0, 0, 0), PixelRegion const* region = NULL)
69  : _s(s), _region(region) {}
70 
71  Iterator(Iterator const&) = default;
72  Iterator(Iterator&&) = default;
73  Iterator& operator=(Iterator const&) = default;
74  Iterator& operator=(Iterator&&) = default;
75  ~Iterator() = default;
76 
77 private:
78  friend class boost::iterator_core_access;
79 
80  Span const& dereference() const { return _s; }
81 
82  void increment() { _s = _region->getSpanAt(_s.getY() + 1); }
83 
84  void decrement() { _s = _region->getSpanAt(_s.getY() - 1); }
85 
86  void advance(int n) { _s = _region->getSpanAt(_s.getY() + n); }
87 
88  bool equal(Iterator const& other) const { return _s == other._s; }
89 
90  int distance_to(Iterator const& other) const { return other._s.getY() - _s.getY(); }
91 
92  Span _s;
93  PixelRegion const* _region;
94 };
95 
97  return Iterator(getSpanAt(_bbox.getBeginY()), this);
98 }
99 inline PixelRegion::Iterator PixelRegion::end() const { return Iterator(getSpanAt(_bbox.getEndY()), this); }
100 } // namespace ellipses
101 } // namespace geom
102 } // namespace afw
103 } // namespace lsst
104 
105 #endif // !LSST_AFW_GEOM_ELLIPSES_PixelRegion_h_INCLUDED
lsst::geom::Box2I const & getBBox() const
Definition: PixelRegion.h:45
A range of pixels within one row of an Image.
Definition: Span.h:47
int y
Definition: SpanSet.cc:49
FastFinder::Iterator Iterator
Definition: FastFinder.cc:179
A base class for image defects.
An ellipse defined by an arbitrary BaseCore and a center point.
Definition: Ellipse.h:51
PixelRegion(Ellipse const &ellipse)
Definition: PixelRegion.cc:33
solver_t * s
Iterator(Span const &s=Span(0, 0, 0), PixelRegion const *region=NULL)
Definition: PixelRegion.h:68
PixelRegion & operator=(PixelRegion const &)=default
ItemVariant const * other
Definition: Schema.cc:56
int getY() const noexcept
Return the y-value.
Definition: Span.h:76
Span const getSpanAt(int y) const
Definition: PixelRegion.cc:44
An integer coordinate rectangle.
Definition: Box.h:54