#include <ogr_geometry.h>

Inheritance diagram for OGRCurve:

Public Member Functions
virtual double	get_Length () const =0
	Returns the length of the curve. More...

virtual void	StartPoint (OGRPoint *) const =0
	Return the curve start point. More...

virtual void	EndPoint (OGRPoint *) const =0
	Return the curve end point. More...

virtual int	get_IsClosed () const
	Return TRUE if curve is closed. More...

virtual void	Value (double, OGRPoint *) const =0
	Fetch point at given distance along curve. More...

Public Member Functions inherited from OGRGeometry
virtual int	getDimension () const =0
	Get the dimension of this object. More...

virtual int	getCoordinateDimension () const
	Get the dimension of the coordinates in this object. More...

virtual OGRBoolean	IsEmpty () const =0
	Returns TRUE (non-zero) if the object has no points. More...

virtual OGRBoolean	IsValid () const
	Test if the geometry is valid. More...

virtual OGRBoolean	IsSimple () const
	Test if the geometry is simple. More...

virtual OGRBoolean	IsRing () const
	Test if the geometry is a ring. More...

virtual void	empty ()=0
	Clear geometry information. This restores the geometry to it's initial state after construction, and before assignment of actual geometry. More...

virtual OGRGeometry *	clone () const =0
	Make a copy of this object. More...

virtual void	getEnvelope (OGREnvelope *psEnvelope) const =0
	Computes and returns the bounding envelope for this geometry in the passed psEnvelope structure. More...

virtual void	getEnvelope (OGREnvelope3D *psEnvelope) const =0
	Computes and returns the bounding envelope (3D) for this geometry in the passed psEnvelope structure. More...

virtual int	WkbSize () const =0
	Returns size of related binary representation. More...

virtual OGRErr	importFromWkb (unsigned char *, int=-1)=0
	Assign geometry from well known binary data. More...

virtual OGRErr	exportToWkb (OGRwkbByteOrder, unsigned char *, OGRwkbVariant=wkbVariantOgc) const =0
	Convert a geometry into well known binary format. More...

virtual OGRErr	importFromWkt (char **ppszInput)=0
	Assign geometry from well known text data. More...

virtual OGRErr	exportToWkt (char **ppszDstText) const =0
	Convert a geometry into well known text format. More...

virtual OGRwkbGeometryType	getGeometryType () const =0
	Fetch geometry type. More...

virtual const char *	getGeometryName () const =0
	Fetch WKT name for geometry type. More...

virtual void	dumpReadable (FILE , const char =NULL, char **papszOptions=NULL) const
	Dump geometry in well known text format to indicated output file. More...

virtual void	flattenTo2D ()=0
	Convert geometry to strictly 2D. In a sense this converts all Z coordinates to 0.0. More...

virtual char *	exportToGML (const char const papszOptions=NULL) const
	Convert a geometry into GML format. More...

virtual char *	exportToKML () const
	Convert a geometry into KML format. More...

virtual char *	exportToJson () const
	Convert a geometry into GeoJSON format. More...

virtual void	closeRings ()
	Force rings to be closed. More...

virtual void	setCoordinateDimension (int nDimension)
	Set the coordinate dimension. More...

void	assignSpatialReference (OGRSpatialReference *poSR)
	Assign spatial reference to this object. More...

OGRSpatialReference *	getSpatialReference (void) const
	Returns spatial reference system for object. More...

virtual OGRErr	transform (OGRCoordinateTransformation *poCT)=0
	Apply arbitrary coordinate transformation to geometry. More...

OGRErr	transformTo (OGRSpatialReference *poSR)
	Transform geometry to new spatial reference system. More...

virtual void	segmentize (double dfMaxLength)
	Modify the geometry such it has no segment longer then the given distance. More...

virtual OGRBoolean	Intersects (OGRGeometry *) const
	Do these features intersect? More...

virtual OGRBoolean	Equals (OGRGeometry *) const =0
	Returns TRUE if two geometries are equivalent. More...

virtual OGRBoolean	Disjoint (const OGRGeometry *) const
	Test for disjointness. More...

virtual OGRBoolean	Touches (const OGRGeometry *) const
	Test for touching. More...

virtual OGRBoolean	Crosses (const OGRGeometry *) const
	Test for crossing. More...

virtual OGRBoolean	Within (const OGRGeometry *) const
	Test for containment. More...

virtual OGRBoolean	Contains (const OGRGeometry *) const
	Test for containment. More...

virtual OGRBoolean	Overlaps (const OGRGeometry *) const
	Test for overlap. More...

virtual OGRGeometry *	Boundary () const
	Compute boundary. More...

virtual double	Distance (const OGRGeometry *) const
	Compute distance between two geometries. More...

virtual OGRGeometry *	ConvexHull () const
	Compute convex hull. More...

virtual OGRGeometry *	Buffer (double dfDist, int nQuadSegs=30) const
	Compute buffer of geometry. More...

virtual OGRGeometry *	Intersection (const OGRGeometry *) const
	Compute intersection. More...

virtual OGRGeometry *	Union (const OGRGeometry *) const
	Compute union. More...

virtual OGRGeometry *	UnionCascaded () const
	Compute union using cascading. More...

virtual OGRGeometry *	Difference (const OGRGeometry *) const
	Compute difference. More...

virtual OGRGeometry *	SymDifference (const OGRGeometry *) const
	Compute symmetric difference. More...

virtual OGRErr	Centroid (OGRPoint *poPoint) const
	Compute the geometry centroid. More...

virtual OGRGeometry *	Simplify (double dTolerance) const
	Simplify the geometry. More...

OGRGeometry *	SimplifyPreserveTopology (double dTolerance) const
	Simplify the geometry while preserving topology. More...

virtual OGRGeometry *	Polygonize () const
	Polygonizes a set of sparse edges. More...

virtual OGRGeometry *	SymmetricDifference (const OGRGeometry *) const CPL_WARN_DEPRECATED("Non standard method. Use SymDifference() instead")
	Compute symmetric difference (deprecated) More...

virtual OGRGeometry *	getBoundary () const CPL_WARN_DEPRECATED("Non standard method. Use Boundary() instead")
	Compute boundary (deprecated) More...

virtual void	swapXY ()
	Swap x and y coordinates. More...

Detailed Description

Abstract curve base class.

Member Function Documentation

void OGRCurve::EndPoint ( OGRPoint * poPoint ) const

pure virtual

Return the curve end point.

This method relates to the SF COM ICurve::get_EndPoint() method.

Parameters

poPoint the point to be assigned the end location.

Implemented in OGRLineString.

Referenced by get_IsClosed().

int OGRCurve::get_IsClosed ( ) const

virtual

Return TRUE if curve is closed.

Tests if a curve is closed. A curve is closed if its start point is equal to its end point.

This method relates to the SFCOM ICurve::get_IsClosed() method.

Returns: TRUE if closed, else FALSE.

References EndPoint(), OGRPoint::getX(), OGRPoint::getY(), and StartPoint().

double OGRCurve::get_Length ( ) const

pure virtual

Returns the length of the curve.

This method relates to the SFCOM ICurve::get_Length() method.

Returns: the length of the curve, zero if the curve hasn't been initialized.

Implemented in OGRLineString.

void OGRCurve::StartPoint ( OGRPoint * poPoint ) const

pure virtual

Return the curve start point.

This method relates to the SF COM ICurve::get_StartPoint() method.

Parameters

poPoint the point to be assigned the start location.

Implemented in OGRLineString.

Referenced by get_IsClosed().

void OGRCurve::Value	(	double	dfDistance,
		OGRPoint *	poPoint
	)		const

pure virtual

Fetch point at given distance along curve.

This method relates to the SF COM ICurve::get_Value() method.

Parameters

dfDistance	distance along the curve at which to sample position. This distance should be between zero and get_Length() for this curve.
poPoint	the point to be assigned the curve position.

Implemented in OGRLineString.

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

ogr_geometry.h
ogrcurve.cpp

Public Member Functions

Detailed Description

Member Function Documentation