geos::io::WKTWriter Class Reference

Outputs the textual representation of a Geometry. See also WKTReader. More...

#include <geos.h>

List of all members.

Public Member Functions
std::string	write (const geom::Geometry *geometry)
	Returns WKT string for the given Geometry.
void	write (const geom::Geometry *geometry, Writer *writer)
std::string	writeFormatted (const geom::Geometry *geometry)
void	writeFormatted (const geom::Geometry *geometry, Writer *writer)
void	setRoundingPrecision (int p0)
void	setTrim (bool p0)
void	setOld3D (bool useOld3D)
int	getOutputDimension () const
void	setOutputDimension (int newOutputDimension)
Static Public Member Functions
std::string	toLineString (const geom::CoordinateSequence &seq)
std::string	toLineString (const geom::Coordinate &p0, const geom::Coordinate &p1)
std::string	toPoint (const geom::Coordinate &p0)
Protected Member Functions
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)
Protected Attributes
int	decimalPlaces

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Detailed Description

Outputs the textual representation of a Geometry. See also WKTReader.

The WKTWriter outputs coordinates rounded to the precision model. No more than the maximum number of necessary decimal places will be output.

The Well-known Text format is defined in the OpenGIS Simple Features Specification for SQL.

A non-standard "LINEARRING" tag is used for LinearRings. The WKT spec does not define a special tag for LinearRings. The standard tag to use is "LINESTRING".

See WKTReader for parsing.

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Member Function Documentation

void geos::io::WKTWriter::setOld3D (  bool  useOld3D  )  [inline]

Enable old style 3D/4D WKT generation. By default the WKBWriter produces new style 3D/4D WKT (ie. "POINT Z (10 20 30)") but if this method is used to turn on old style WKT production then the WKT will be formatted in the style "POINT (10 20 30)". Parameters: useOld3D  true or false

void geos::io::WKTWriter::setRoundingPrecision (  int  p0  )

Sets the rounding precision when writing the WKT a precision of -1 disables it Parameters: p0  the new precision to use

void geos::io::WKTWriter::setTrim (  bool  p0  )

Enables/disables trimming of unnecessary decimals Parameters: p0  the trim boolean

std::string geos::io::WKTWriter::toLineString (  const geom::Coordinate &  p0, const geom::Coordinate &  p1 )  [static]

Generates the WKT for a 2-point LineString. Parameters: p0  the first coordinate p1  the second coordinate Returns: the WKT

std::string geos::io::WKTWriter::toLineString (  const geom::CoordinateSequence &  seq  )  [static]

Generates the WKT for a N-point LineString. Parameters: seq  the sequence to outpout Returns: the WKT

std::string geos::io::WKTWriter::toPoint (  const geom::Coordinate &  p0  )  [static]

Generates the WKT for a Point. Parameters: p0  the point coordinate Returns: the WKT

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The documentation for this class was generated from the following file:

• WKTWriter.h

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