GEOS  3.11.0rc0
GeometrySnapper.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2009-2010 Sandro Santilli <strk@kbt.io>
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: operation/overlay/snap/GeometrySnapper.java r320 (JTS-1.12)
17  *
18  **********************************************************************/
19 
20 #pragma once
21 
22 #include <geos/geom/Coordinate.h>
23 
24 #include <memory>
25 #include <vector>
26 
27 // Forward declarations
28 namespace geos {
29 namespace geom {
30 //class PrecisionModel;
31 class Geometry;
32 class CoordinateSequence;
33 struct GeomPtrPair;
34 }
35 }
36 
37 namespace geos {
38 namespace operation { // geos::operation
39 namespace overlay { // geos::operation::overlay
40 namespace snap { // geos::operation::overlay::snap
41 
57 class GEOS_DLL GeometrySnapper {
58 
59 public:
60 
61  typedef std::unique_ptr<geom::Geometry> GeomPtr;
62 
72  static void snap(const geom::Geometry& g0,
73  const geom::Geometry& g1,
74  double snapTolerance, geom::GeomPtrPair& ret);
75 
76  static GeomPtr snapToSelf(const geom::Geometry& g0,
77  double snapTolerance, bool cleanResult);
78 
85  :
86  srcGeom(g)
87  {
88  }
89 
99  std::unique_ptr<geom::Geometry> snapTo(const geom::Geometry& g,
100  double snapTolerance);
101 
111  std::unique_ptr<geom::Geometry> snapToSelf(double snapTolerance,
112  bool cleanResult);
113 
122 
123  static double computeSizeBasedSnapTolerance(const geom::Geometry& g);
124 
129  const geom::Geometry& g2);
130 
131 
132 private:
133 
134  // eventually this will be determined from the geometry topology
135  //static const double snapTol; // = 0.000001;
136 
137  static const double snapPrecisionFactor; // = 10e-10
138 
139  const geom::Geometry& srcGeom;
140 
142  std::unique_ptr<geom::Coordinate::ConstVect> extractTargetCoordinates(
143  const geom::Geometry& g);
144 
145  // Declare type as noncopyable
146  GeometrySnapper(const GeometrySnapper& other) = delete;
147  GeometrySnapper& operator=(const GeometrySnapper& rhs) = delete;
148 };
149 
150 
151 } // namespace geos::operation::overlay::snap
152 } // namespace geos::operation::overlay
153 } // namespace geos::operation
154 } // namespace geos
155 
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:186
Snaps the vertices and segments of a geom::Geometry to another Geometry's vertices.
Definition: GeometrySnapper.h:57
static void snap(const geom::Geometry &g0, const geom::Geometry &g1, double snapTolerance, geom::GeomPtrPair &ret)
static double computeOverlaySnapTolerance(const geom::Geometry &g1, const geom::Geometry &g2)
Computes the snap tolerance based on input geometries;.
static double computeOverlaySnapTolerance(const geom::Geometry &g)
Estimates the snap tolerance for a Geometry, taking into account its precision model.
GeometrySnapper(const geom::Geometry &g)
Definition: GeometrySnapper.h:84
std::unique_ptr< geom::Geometry > snapTo(const geom::Geometry &g, double snapTolerance)
Snaps the vertices in the component geom::LineStrings of the source geometry to the vertices of the g...
std::unique_ptr< geom::Geometry > snapToSelf(double snapTolerance, bool cleanResult)
Snaps the vertices in the component geom::LineStrings of the source geometry to the vertices of itsel...
Basic namespace for all GEOS functionalities.
Definition: Angle.h:25