WKBWriter.h

00001 /**********************************************************************
00002  * $Id: WKBWriter.h 2032 2007-11-23 02:33:41Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2005-2006 Refractions Research Inc.
00008  * Copyright (C) 2001-2002 Vivid Solutions 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 #ifndef GEOS_IO_WKBWRITER_H
00018 #define GEOS_IO_WKBWRITER_H
00019 
00020 #include <geos/platform.h> // for getMachineByteOrder
00021 #include <iosfwd>
00022 
00023 // Forward declarations
00024 namespace geos {
00025         namespace geom {
00026 
00027                 class CoordinateSequence;
00028                 class Geometry;
00029                 class GeometryCollection;
00030                 class Point;
00031                 class LineString;
00032                 class LinearRing;
00033                 class Polygon;
00034                 class MultiPoint;
00035                 class MultiLineString;
00036                 class MultiPolygon;
00037                 class PrecisionModel;
00038 
00039         } // namespace geom
00040 } // namespace geos
00041 
00042 namespace geos {
00043 namespace io {
00044 
00067 class WKBWriter {
00068 
00069 public:
00070 
00071         WKBWriter(int dims=2, int bo=getMachineByteOrder(), bool includeSRID=false);
00072 
00073         /*
00074          * \brief
00075          * Returns the output dimension used by the
00076          * <code>WKBWriter</code>.
00077          */
00078         virtual int getOutputDimension() const { return outputDimension; }
00079 
00080         /*
00081          * Sets the output dimension used by the
00082          * <code>WKBWriter</code>.
00083          */
00084         virtual void setOutputDimension(int newOutputDimension) { outputDimension=newOutputDimension; }
00085         
00086         /*
00087          * \brief
00088          * Returns the byte order used by the
00089          * <code>WKBWriter</code>.
00090          */
00091         virtual int getByteOrder() const { return byteOrder; }
00092 
00093         /*
00094          * Sets the byte order used by the
00095          * <code>WKBWriter</code>.
00096          */
00097         virtual void setByteOrder(int newByteOrder) { byteOrder=newByteOrder; }
00098 
00099         /*
00100          * \brief
00101          * Returns whether SRID values are output by the
00102          * <code>WKBWriter</code>.
00103          */
00104         virtual int getIncludeSRID() const { return includeSRID; }
00105 
00106         /*
00107          * Sets whether SRID values should be output by the
00108          * <code>WKBWriter</code>.
00109          */
00110         virtual void setIncludeSRID(int newIncludeSRID) { includeSRID=static_cast<bool>(newIncludeSRID); }
00111 
00119         void write(const geom::Geometry &g, std::ostream &os);
00120                 // throws IOException, ParseException
00121 
00129         void writeHEX(const geom::Geometry &g, std::ostream &os);
00130                 // throws IOException, ParseException
00131 
00132 private:
00133 
00134         int outputDimension;
00135 
00136         int byteOrder;
00137         
00138         bool includeSRID;
00139 
00140         std::ostream *outStream;
00141 
00142         unsigned char buf[8];
00143 
00144         void writePoint(const geom::Point &p);
00145                 // throws IOException
00146 
00147         void writeLineString(const geom::LineString &ls);
00148                 // throws IOException
00149 
00150         void writePolygon(const geom::Polygon &p);
00151                 // throws IOException
00152 
00153         void writeGeometryCollection(const geom::GeometryCollection &c, int wkbtype);
00154                 // throws IOException, ParseException
00155 
00156         void writeCoordinateSequence(const geom::CoordinateSequence &cs, bool sized);
00157                 // throws IOException
00158 
00159         void writeCoordinate(const geom::CoordinateSequence &cs, int idx, bool is3d);
00160                 // throws IOException
00161 
00162         void writeGeometryType(int geometryType, int SRID);
00163                 // throws IOException
00164 
00165         void writeSRID(int SRID);
00166                 // throws IOException
00167 
00168         void writeByteOrder();
00169                 // throws IOException
00170 
00171         void writeInt(int intValue);
00172                 // throws IOException
00173 
00174 };
00175 
00176 } // namespace io
00177 } // namespace geos
00178 
00179 #endif // #ifndef GEOS_IO_WKBWRITER_H
00180 
00181 /**********************************************************************
00182  * $Log$
00183  * Revision 1.2  2006/03/28 11:26:13  strk
00184  * ByteOrderDataInStream inlines moved to .inl file, updated
00185  * implementation files includes.
00186  *
00187  * Revision 1.1  2006/03/20 18:18:14  strk
00188  * io.h header split
00189  *
00190  **********************************************************************/

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