GEOS 3.9.1
ScaledNoder.h
1/**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2006 Refractions Research Inc.
7 *
8 * This is free software; you can redistribute and/or modify it under
9 * the terms of the GNU Lesser General Public Licence as published
10 * by the Free Software Foundation.
11 * See the COPYING file for more information.
12 *
13 **********************************************************************
14 *
15 * Last port: noding/ScaledNoder.java rev. 1.3 (JTS-1.7.1)
16 *
17 **********************************************************************/
18
19#ifndef GEOS_NODING_SCALEDNODER_H
20#define GEOS_NODING_SCALEDNODER_H
21
22#include <geos/export.h>
23
24#include <cassert>
25#include <vector>
26
27#include <geos/inline.h>
28#include <geos/noding/Noder.h> // for inheritance
29//#include <geos/geom/CoordinateFilter.h> // for inheritance
30#include <geos/util.h>
31
32#ifdef _MSC_VER
33#pragma warning(push)
34#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
35#endif
36
37// Forward declarations
38namespace geos {
39namespace geom {
40class Coordinate;
41class CoordinateSequence;
42}
43namespace noding {
44class SegmentString;
45}
46}
47
48namespace geos {
49namespace noding { // geos.noding
50
61class GEOS_DLL ScaledNoder : public Noder { // , public geom::CoordinateFilter { // implements Noder
62
63public:
64
65 bool
66 isIntegerPrecision()
67 {
68 return (scaleFactor == 1.0);
69 }
70
71 ScaledNoder(Noder& n, double nScaleFactor,
72 double nOffsetX = 0.0, double nOffsetY = 0.0)
73 :
74 noder(n),
75 scaleFactor(nScaleFactor),
76 offsetX(nOffsetX),
77 offsetY(nOffsetY),
78 isScaled(nScaleFactor != 1.0)
79 {}
80
81 ~ScaledNoder() override;
82
83 std::vector<SegmentString*>* getNodedSubstrings() const override;
84
85 void computeNodes(std::vector<SegmentString*>* inputSegStr) override;
86
87 //void filter(Coordinate& c);
88
89 void
90 filter_ro(const geom::Coordinate* c)
91 {
92 ::geos::ignore_unused_variable_warning(c);
93 assert(0);
94 }
95
96 void filter_rw(geom::Coordinate* c) const;
97
98private:
99
100 Noder& noder;
101
102 double scaleFactor;
103
104 double offsetX;
105
106 double offsetY;
107
108 bool isScaled;
109
110 void rescale(std::vector<SegmentString*>& segStrings) const;
111
112 void scale(std::vector<SegmentString*>& segStrings) const;
113
114 class Scaler;
115
116 class ReScaler;
117
118 friend class ScaledNoder::Scaler;
119
120 friend class ScaledNoder::ReScaler;
121
122 mutable std::vector<geom::CoordinateSequence*> newCoordSeq;
123
124 // Declare type as noncopyable
125 ScaledNoder(const ScaledNoder& other) = delete;
126 ScaledNoder& operator=(const ScaledNoder& rhs) = delete;
127};
128
129} // namespace geos.noding
130} // namespace geos
131
132#ifdef _MSC_VER
133#pragma warning(pop)
134#endif
135
136#endif // GEOS_NODING_SCALEDNODER_H
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
Computes all intersections between segments in a set of SegmentString.
Definition: Noder.h:49
Wraps a Noder and transforms its input into the integer domain.
Definition: ScaledNoder.h:61
void computeNodes(std::vector< SegmentString * > *inputSegStr) override
Computes the noding for a collection of SegmentStrings.
std::vector< SegmentString * > * getNodedSubstrings() const override
Returns a collection of fully noded SegmentStrings. The SegmentStrings have the same context as their...
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:26