GEOS  3.4.2
GeometryTransformer.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
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: geom/util/GeometryTransformer.java r320 (JTS-1.12)
17  *
18  **********************************************************************/
19 
20 #ifndef GEOS_GEOM_UTIL_GEOMETRYTRANSFORMER_H
21 #define GEOS_GEOM_UTIL_GEOMETRYTRANSFORMER_H
22 
23 
24 #include <geos/export.h>
25 #include <geos/geom/Coordinate.h> // destructor visibility for vector
26 #include <geos/geom/Geometry.h> // destructor visibility for auto_ptr
27 #include <geos/geom/CoordinateSequence.h> // destructor visibility for auto_ptr
28 
29 #include <memory> // for auto_ptr
30 #include <vector>
31 
32 // Forward declarations
33 namespace geos {
34  namespace geom {
35  class Geometry;
36  class GeometryFactory;
37  class Point;
38  class LinearRing;
39  class LineString;
40  class Polygon;
41  class MultiPoint;
42  class MultiPolygon;
43  class MultiLineString;
44  class GeometryCollection;
45  namespace util {
46  //class GeometryEditorOperation;
47  }
48  }
49 }
50 
51 
52 namespace geos {
53 namespace geom { // geos.geom
54 namespace util { // geos.geom.util
55 
92 class GEOS_DLL GeometryTransformer {
93 
94 public:
95 
97 
98  virtual ~GeometryTransformer();
99 
100  std::auto_ptr<Geometry> transform(const Geometry* nInputGeom);
101 
102 protected:
103 
104  const GeometryFactory* factory;
105 
115  CoordinateSequence::AutoPtr createCoordinateSequence(
116  std::auto_ptr< std::vector<Coordinate> > coords);
117 
118  virtual CoordinateSequence::AutoPtr transformCoordinates(
119  const CoordinateSequence* coords,
120  const Geometry* parent);
121 
122  virtual Geometry::AutoPtr transformPoint(
123  const Point* geom,
124  const Geometry* parent);
125 
126  virtual Geometry::AutoPtr transformMultiPoint(
127  const MultiPoint* geom,
128  const Geometry* parent);
129 
130  virtual Geometry::AutoPtr transformLinearRing(
131  const LinearRing* geom,
132  const Geometry* parent);
133 
134  virtual Geometry::AutoPtr transformLineString(
135  const LineString* geom,
136  const Geometry* parent);
137 
138  virtual Geometry::AutoPtr transformMultiLineString(
139  const MultiLineString* geom,
140  const Geometry* parent);
141 
142  virtual Geometry::AutoPtr transformPolygon(
143  const Polygon* geom,
144  const Geometry* parent);
145 
146  virtual Geometry::AutoPtr transformMultiPolygon(
147  const MultiPolygon* geom,
148  const Geometry* parent);
149 
150  virtual Geometry::AutoPtr transformGeometryCollection(
151  const GeometryCollection* geom,
152  const Geometry* parent);
153 
154 private:
155 
156  const Geometry* inputGeom;
157 
158  // these could eventually be exposed to clients
162  bool pruneEmptyGeometry;
163 
169  bool preserveGeometryCollectionType;
170 
174  bool preserveCollections;
175 
179  bool preserveType;
180 
181  // Declare type as noncopyable
183  GeometryTransformer& operator=(const GeometryTransformer& rhs);
184 };
185 
186 
187 } // namespace geos.geom.util
188 } // namespace geos.geom
189 } // namespace geos
190 
191 #endif // GEOS_GEOM_UTIL_GEOMETRYTRANSFORMER_H
A framework for processes which transform an input Geometry into an output Geometry, possibly changing its structure and type(s).
Definition: GeometryTransformer.h:92
Models a collection of Polygons.
Definition: MultiPolygon.h:60
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:167
Definition: LineString.h:70
Represents a linear polygon, which may include holes.
Definition: Polygon.h:66
std::auto_ptr< Geometry > AutoPtr
An auto_ptr of Geometry.
Definition: Geometry.h:180
Supplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geom...
Definition: GeometryFactory.h:67
Represents a collection of heterogeneous Geometry objects.
Definition: GeometryCollection.h:56
Definition: MultiPoint.h:55
Models an OGC SFS LinearRing.
Definition: LinearRing.h:57
The internal representation of a list of coordinates inside a Geometry.
Definition: CoordinateSequence.h:59
Definition: Point.h:67
Models a collection of (}s.
Definition: MultiLineString.h:51