WKTWriter.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: io/WKTWriter.java rev. 1.34 (JTS-1.7)
 *
 **********************************************************************/
 
#ifndef GEOS_IO_WKTWRITER_H
#define GEOS_IO_WKTWRITER_H
 
#include <geos/export.h>
 
#include <string>
 
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
 
// Forward declarations
namespace geos {
        namespace geom {
                class Coordinate;
                class CoordinateSequence;
                class Geometry;
                class GeometryCollection;
                class Point;
                class LineString;
                class LinearRing;
                class Polygon;
                class MultiPoint;
                class MultiLineString;
                class MultiPolygon;
                class PrecisionModel;
        } 
        namespace io {
                class Writer;
        } 
} 
 
 
namespace geos {
namespace io {

class GEOS_DLL WKTWriter {
public:
        WKTWriter();
        ~WKTWriter();
 
        //string(count, ch) can be used for this
        //static string stringOfChar(char ch, int count);

        std::string write(const geom::Geometry *geometry);
 
        // Send Geometry's WKT to the given Writer
        void write(const geom::Geometry *geometry, Writer *writer);
 
        std::string writeFormatted(const geom::Geometry *geometry);
 
        void writeFormatted(const geom::Geometry *geometry, Writer *writer);

        static std::string toLineString(const geom::CoordinateSequence& seq); 

        static std::string toLineString(const geom::Coordinate& p0, const geom::Coordinate& p1);

        static std::string toPoint(const geom::Coordinate& p0);
 
        void setRoundingPrecision(int p0);

        void setTrim(bool p0);

        void setOld3D(bool useOld3D ) { old3D = useOld3D; }
 
        /*
         * \brief
         * Returns the output dimension used by the
         * <code>WKBWriter</code>.
         */
        int getOutputDimension() const { return defaultOutputDimension; }
 
        /*
         * Sets the output dimension used by the <code>WKBWriter</code>.  
         *
         * @param newOutputDimension Supported values are 2 or 3. 
         *        Note that 3 indicates up to 3 dimensions will be
         *        written but 2D WKB is still produced for 2D geometries.
         */
        void setOutputDimension(int newOutputDimension);
        
protected:
 
  int decimalPlaces;
 
        void appendGeometryTaggedText(const geom::Geometry *geometry, int level, Writer *writer);
 
        void appendPointTaggedText(
                        const geom::Coordinate* coordinate,
                        int level, Writer *writer);
 
        void appendLineStringTaggedText(
                        const geom::LineString *lineString,
                        int level, Writer *writer);
 
        void appendLinearRingTaggedText(
                        const geom::LinearRing *lineString,
                        int level, Writer *writer);
 
        void appendPolygonTaggedText(
                        const geom::Polygon *polygon,
                        int level, Writer *writer);
 
        void appendMultiPointTaggedText(
                        const geom::MultiPoint *multipoint,
                        int level, Writer *writer);
 
        void appendMultiLineStringTaggedText(
                        const geom::MultiLineString *multiLineString,
                        int level,Writer *writer);
 
        void appendMultiPolygonTaggedText(
                        const geom::MultiPolygon *multiPolygon,
                        int level, Writer *writer);
 
        void appendGeometryCollectionTaggedText(
                        const geom::GeometryCollection *geometryCollection,
                        int level,Writer *writer);
 
        void appendPointText(const geom::Coordinate* coordinate, int level,
                        Writer *writer);
 
        void appendCoordinate(const geom::Coordinate* coordinate,
                        Writer *writer);
 
        std::string writeNumber(double d);
 
        void appendLineStringText(
                        const geom::LineString *lineString,
                        int level, bool doIndent, Writer *writer);
 
        void appendPolygonText(
                        const geom::Polygon *polygon,
                        int level, bool indentFirst, Writer *writer);
 
        void appendMultiPointText(
                        const geom::MultiPoint *multiPoint,
                        int level, Writer *writer);
 
        void appendMultiLineStringText(
                        const geom::MultiLineString *multiLineString,
                        int level, bool indentFirst,Writer *writer);
 
        void appendMultiPolygonText(
                        const geom::MultiPolygon *multiPolygon,
                        int level, Writer *writer);
 
        void appendGeometryCollectionText(
                        const geom::GeometryCollection *geometryCollection,
                        int level,Writer *writer);
 
private:
 
        enum {
                INDENT = 2
        };
 
//      static const int INDENT = 2;
 
        bool isFormatted;
 
        int roundingPrecision;
 
        bool trim;
 
        int level;
 
        int defaultOutputDimension;
    int outputDimension;
    bool old3D;
 
        void writeFormatted(
                        const geom::Geometry *geometry,
                        bool isFormatted, Writer *writer);
 
        void indent(int level, Writer *writer);
};
 
} // namespace geos::io
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // #ifndef GEOS_IO_WKTWRITER_H