GEOS  3.6.2
GeometricShapeFactory.h
00001 /**********************************************************************
00002  *
00003  * GEOS - Geometry Engine Open Source
00004  * http://geos.osgeo.org
00005  *
00006  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00007  * Copyright (C) 2006 Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************
00015  *
00016  * Last port: util/GeometricShapeFactory.java rev 1.14 (JTS-1.10+)
00017  * (2009-03-19)
00018  *
00019  **********************************************************************/
00020 
00021 #ifndef GEOS_UTIL_GEOMETRICSHAPEFACTORY_H
00022 #define GEOS_UTIL_GEOMETRICSHAPEFACTORY_H
00023 
00024 #include <geos/export.h>
00025 #include <cassert>
00026 
00027 #include <geos/geom/Coordinate.h>
00028 
00029 #ifdef _MSC_VER
00030 #pragma warning(push)
00031 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00032 #endif
00033 
00034 // Forward declarations
00035 namespace geos {
00036         namespace geom { 
00037                 class Coordinate;
00038                 class Envelope;
00039                 class Polygon;
00040                 class GeometryFactory;
00041                 class PrecisionModel;
00042                 class LineString;
00043         }
00044 }
00045 
00046 namespace geos {
00047 namespace util { // geos::util
00048 
00049 
00066 class GEOS_DLL GeometricShapeFactory {
00067 protected:
00068         class Dimensions {
00069         public:
00070                 Dimensions();
00071                 geom::Coordinate base;
00072                 geom::Coordinate centre;
00073                 double width;
00074                 double height;
00075                 void setBase(const geom::Coordinate& newBase);
00076                 void setCentre(const geom::Coordinate& newCentre);
00077                 void setSize(double size);
00078                 void setWidth(double nWidth);
00079                 void setHeight(double nHeight);
00080 
00081                 // Return newly-allocated object, ownership transferred
00082                 geom::Envelope* getEnvelope() const;
00083         };
00084         const geom::GeometryFactory* geomFact; // externally owned
00085         const geom::PrecisionModel* precModel; // externally owned
00086         Dimensions dim;
00087         int nPts;
00088 
00089         geom::Coordinate coord(double x, double y) const;
00090 
00091 public:
00092 
00103         GeometricShapeFactory(const geom::GeometryFactory *factory);
00104 
00105         virtual ~GeometricShapeFactory() {}
00106 
00116         geom::LineString* createArc(double startAng, double angExtent);
00117 
00129         geom::Polygon* createArcPolygon(double startAng, double angExt);
00130 
00136         geom::Polygon* createCircle();
00137 
00143         geom::Polygon* createRectangle();
00144 
00153         void setBase(const geom::Coordinate& base);
00154 
00162         void setCentre(const geom::Coordinate& centre);
00163 
00169         void setHeight(double height);
00170 
00174         void setNumPoints(int nNPts);
00175 
00182         void setSize(double size);
00183 
00189         void setWidth(double width);
00190 
00191 };
00192 
00193 } // namespace geos::util
00194 } // namespace geos
00195 
00196 #ifdef _MSC_VER
00197 #pragma warning(pop)
00198 #endif
00199 
00200 #endif // GEOS_UTIL_GEOMETRICSHAPEFACTORY_H