GEOS  3.3.3
HotPixel.h
1 /**********************************************************************
2  * $Id: HotPixel.h 3527 2011-12-06 17:26:09Z strk $
3  *
4  * GEOS - Geometry Engine Open Source
5  * http://geos.refractions.net
6  *
7  * Copyright (C) 2006 Refractions Research Inc.
8  *
9  * This is free software; you can redistribute and/or modify it under
10  * the terms of the GNU Lesser General Public Licence as published
11  * by the Free Software Foundation.
12  * See the COPYING file for more information.
13  *
14  **********************************************************************
15  *
16  * Last port: noding/snapround/HotPixel.java r320 (JTS-1.12)
17  *
18  **********************************************************************/
19 
20 #ifndef GEOS_NODING_SNAPROUND_HOTPIXEL_H
21 #define GEOS_NODING_SNAPROUND_HOTPIXEL_H
22 
23 #include <geos/export.h>
24 
25 #include <geos/inline.h>
26 
27 #include <geos/geom/Coordinate.h> // for composition
28 #include <geos/geom/Envelope.h> // for auto_ptr
29 
30 #ifdef _MSC_VER
31 #pragma warning(push)
32 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
33 #endif
34 
35 // Forward declarations
36 namespace geos {
37  namespace geom {
38  class Envelope;
39  }
40  namespace algorithm {
41  class LineIntersector;
42  }
43  namespace noding {
44  class NodedSegmentString;
45  }
46 }
47 
48 namespace geos {
49 namespace noding { // geos::noding
50 namespace snapround { // geos::noding::snapround
51 
63 class GEOS_DLL HotPixel {
64 
65 private:
66 
68 
70  const geom::Coordinate& originalPt;
71  geom::Coordinate ptScaled;
72 
73  mutable geom::Coordinate p0Scaled;
74  mutable geom::Coordinate p1Scaled;
75 
76  double scaleFactor;
77 
78  double minx;
79  double maxx;
80  double miny;
81  double maxy;
82 
90  std::vector<geom::Coordinate> corner;
91 
93  mutable std::auto_ptr<geom::Envelope> safeEnv;
94 
95  void initCorners(const geom::Coordinate& pt);
96 
97  double scale(double val) const;
98 
99  void copyScaled(const geom::Coordinate& p,
100  geom::Coordinate& pScaled) const;
101 
123  bool intersectsToleranceSquare(const geom::Coordinate& p0,
124  const geom::Coordinate& p1) const;
125 
126 
141  bool intersectsPixelClosure(const geom::Coordinate& p0,
142  const geom::Coordinate& p1);
143 
144  bool intersectsScaled(const geom::Coordinate& p0,
145  const geom::Coordinate& p1) const;
146 
147  // Declare type as noncopyable
148  HotPixel(const HotPixel& other);
149  HotPixel& operator=(const HotPixel& rhs);
150 
151 public:
152 
162  HotPixel(const geom::Coordinate& pt,
163  double scaleFact,
165 
169  const geom::Coordinate& getCoordinate() const { return originalPt; }
170 
178  const geom::Envelope& getSafeEnvelope() const;
179 
187  bool intersects(const geom::Coordinate& p0,
188  const geom::Coordinate& p1) const;
189 
198  bool addSnappedNode(NodedSegmentString& segStr, std::size_t segIndex);
199 
200 };
201 
202 } // namespace geos::noding::snapround
203 } // namespace geos::noding
204 } // namespace geos
205 
206 #ifdef _MSC_VER
207 #pragma warning(pop)
208 #endif
209 
210 #ifdef GEOS_INLINE
211 # include "geos/noding/snapround/HotPixel.inl"
212 #endif
213 
214 #endif // GEOS_NODING_SNAPROUND_HOTPIXEL_H
215 
216 /**********************************************************************
217  * $Log$
218  * Revision 1.3 2006/05/03 17:50:49 strk
219  * Doxygen comments
220  *
221  * Revision 1.2 2006/03/24 09:52:41 strk
222  * USE_INLINE => GEOS_INLINE
223  *
224  * Revision 1.1 2006/03/14 12:55:56 strk
225  * Headers split: geomgraphindex.h, nodingSnapround.h
226  *
227  **********************************************************************/
228