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GeometricShapeFactory.h

00001 /**********************************************************************
00002  * $Id: GeometricShapeFactory.h 3313 2011-04-28 10:04:27Z strk $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00008  * Copyright (C) 2006 Refractions Research Inc.
00009  *
00010  * This is free software; you can redistribute and/or modify it under
00011  * the terms of the GNU Lesser General Public Licence as published
00012  * by the Free Software Foundation. 
00013  * See the COPYING file for more information.
00014  *
00015  **********************************************************************
00016  *
00017  * Last port: util/GeometricShapeFactory.java rev 1.14 (JTS-1.10+)
00018  * (2009-03-19)
00019  *
00020  **********************************************************************/
00021 
00022 #ifndef GEOS_UTIL_GEOMETRICSHAPEFACTORY_H
00023 #define GEOS_UTIL_GEOMETRICSHAPEFACTORY_H
00024 
00025 #include <geos/export.h>
00026 #include <cassert>
00027 
00028 #include <geos/geom/Coordinate.h>
00029 
00030 #ifdef _MSC_VER
00031 #pragma warning(push)
00032 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00033 #endif
00034 
00035 // Forward declarations
00036 namespace geos {
00037         namespace geom { 
00038                 class Coordinate;
00039                 class Envelope;
00040                 class Polygon;
00041                 class GeometryFactory;
00042                 class PrecisionModel;
00043                 class LineString;
00044         }
00045 }
00046 
00047 namespace geos {
00048 namespace util { // geos::util
00049 
00050 
00067 class GEOS_DLL GeometricShapeFactory {
00068 protected:
00069         class Dimensions {
00070         public:
00071                 Dimensions();
00072                 geom::Coordinate base;
00073                 geom::Coordinate centre;
00074                 double width;
00075                 double height;
00076                 void setBase(const geom::Coordinate& newBase);
00077                 void setCentre(const geom::Coordinate& newCentre);
00078                 void setSize(double size);
00079                 void setWidth(double nWidth);
00080                 void setHeight(double nHeight);
00081 
00082                 // Return newly-allocated object, ownership transferred
00083                 geom::Envelope* getEnvelope() const;
00084         };
00085         const geom::GeometryFactory* geomFact; // externally owned
00086         const geom::PrecisionModel* precModel; // externally owned
00087         Dimensions dim;
00088         int nPts;
00089 
00090         geom::Coordinate coord(double x, double y) const;
00091 
00092 public:
00093 
00104         GeometricShapeFactory(const geom::GeometryFactory *factory);
00105 
00106         virtual ~GeometricShapeFactory() {}
00107 
00117         geom::LineString* createArc(double startAng, double angExtent);
00118 
00130         geom::Polygon* createArcPolygon(double startAng, double angExt);
00131 
00137         geom::Polygon* createCircle();
00138 
00144         geom::Polygon* createRectangle();
00145 
00154         void setBase(const geom::Coordinate& base);
00155 
00163         void setCentre(const geom::Coordinate& centre);
00164 
00170         void setHeight(double height);
00171 
00175         void setNumPoints(int nNPts);
00176 
00183         void setSize(double size);
00184 
00190         void setWidth(double width);
00191 
00192 };
00193 
00194 } // namespace geos::util
00195 } // namespace geos
00196 
00197 #ifdef _MSC_VER
00198 #pragma warning(pop)
00199 #endif
00200 
00201 #endif // GEOS_UTIL_GEOMETRICSHAPEFACTORY_H
00202 
00203 /**********************************************************************
00204  * $Log$
00205  * Revision 1.1  2006/03/09 16:46:49  strk
00206  * geos::geom namespace definition, first pass at headers split
00207  *
00208  **********************************************************************/

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