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GeometricShapeFactory.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2001-2002 Vivid Solutions Inc.
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: util/GeometricShapeFactory.java rev 1.14 (JTS-1.10+)
17 * (2009-03-19)
18 *
19 **********************************************************************/
20
21 #ifndef GEOS_UTIL_GEOMETRICSHAPEFACTORY_H
22 #define GEOS_UTIL_GEOMETRICSHAPEFACTORY_H
23
24 #include <geos/export.h>
25 #include <cassert>
26
27 #include <geos/geom/Coordinate.h>
28
29 #ifdef _MSC_VER
30 #pragma warning(push)
31 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
32 #endif
33
34 // Forward declarations
35 namespace geos {
36 namespace geom {
37 class Coordinate;
38 class Envelope;
39 class Polygon;
40 class GeometryFactory;
41 class PrecisionModel;
42 class LineString;
43 }
44 }
45
46 namespace geos {
47 namespace util { // geos::util
48
49
66 class GEOS_DLL GeometricShapeFactory {
67 protected:
68 class Dimensions {
69 public:
70 Dimensions();
71 geom::Coordinate base;
72 geom::Coordinate centre;
73 double width;
74 double height;
75 void setBase(const geom::Coordinate& newBase);
76 void setCentre(const geom::Coordinate& newCentre);
77 void setSize(double size);
78 void setWidth(double nWidth);
79 void setHeight(double nHeight);
80
81 // Return newly-allocated object, ownership transferred
82 geom::Envelope* getEnvelope() const;
83 };
84 const geom::GeometryFactory* geomFact; // externally owned
85 const geom::PrecisionModel* precModel; // externally owned
86 Dimensions dim;
87 int nPts;
88
89 geom::Coordinate coord(double x, double y) const;
90
91 public:
92
103 GeometricShapeFactory(const geom::GeometryFactory *factory);
104
105 virtual ~GeometricShapeFactory() {}
106
116 geom::LineString* createArc(double startAng, double angExtent);
117
129 geom::Polygon* createArcPolygon(double startAng, double angExt);
130
136 geom::Polygon* createCircle();
137
143 geom::Polygon* createRectangle();
144
153 void setBase(const geom::Coordinate& base);
154
162 void setCentre(const geom::Coordinate& centre);
163
169 void setHeight(double height);
170
174 void setNumPoints(int nNPts);
175
182 void setSize(double size);
183
189 void setWidth(double width);
190
191 };
192
193 } // namespace geos::util
194 } // namespace geos
195
196 #ifdef _MSC_VER
197 #pragma warning(pop)
198 #endif
199
200 #endif // GEOS_UTIL_GEOMETRICSHAPEFACTORY_H