geos::LineString Class Reference

Basic implementation of LineString. More...

#include <geos.h>

Inheritance diagram for geos::LineString:

List of all members.

Public Member Functions
	LineString (CoordinateSequence *pts, const GeometryFactory *newFactory)
	Constructs a LineString taking ownership the given CoordinateSequence.
virtual Geometry *	clone () const
	Make a deep-copy of this Geometry.
virtual CoordinateSequence *	getCoordinates () const
	Returns this Geometry vertices. Caller takes ownership of the returned object.
const CoordinateSequence *	getCoordinatesRO () const
	Returns a read-only pointer to internal CoordinateSequence.
virtual int	getDimension () const
	Returns line dimension (1).
virtual int	getBoundaryDimension () const
	Returns Dimension::False for a closed LineString, 0 otherwise (LineString boundary is a MultiPoint).
virtual Geometry *	getBoundary () const
	Returns a MultiPoint. Empty for closed LineString, a Point for each vertex otherwise.
virtual bool	isEmpty () const
	Returns whether or not the set of points in this Geometry is empty.
virtual int	getNumPoints () const
	Returns the count of this Geometrys vertices.
virtual string	getGeometryType () const
	Return a string representation of this Geometry type.
virtual GeometryTypeId	getGeometryTypeId () const
	Return an integer representation of this Geometry type.
virtual bool	isSimple () const
	Returns false if the Geometry not simple.
virtual bool	equalsExact (const Geometry *other, double tolerance) const
	Returns true if the two Geometrys are exactly equal, up to a specified tolerance.
virtual void	normalize ()
	Normalize a LineString.
virtual const Coordinate *	getCoordinate () const
	Returns a vertex of this Geometry.
virtual double	getLength () const
	Returns the length of this Geometry.

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Detailed Description

Basic implementation of LineString.

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Constructor & Destructor Documentation

geos::LineString::LineString (  CoordinateSequence *  newCoords, const GeometryFactory *  factory )

Constructs a LineString taking ownership the given CoordinateSequence. Constructs a LineString taking ownership of the given CoordinateSequence. Parameters: newCoords  the list of coordinates making up the linestring, or null to create the empty geometry. Consecutive points may not be equal. factory  the GeometryFactory used to create this Geometry.

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Member Function Documentation

double geos::LineString::getLength (   )  const [virtual]

Returns the length of this Geometry. Returns the length of this Geometry. Linear geometries return their length. Areal geometries return their perimeter. They override this function to compute the area. Others return 0.0 Returns: the length of the Geometry Reimplemented from geos::Geometry.

void geos::LineString::normalize (  void   )  [virtual]

Normalize a LineString. Normalizes a LineString. A normalized linestring has the first point which is not equal to it's reflected point less than the reflected point. Implements geos::Geometry.

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

• geom.h
• LineString.cpp

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