Point class. More...

#include <ogr_geometry.h>

Inheritance diagram for OGRPoint:

Public Member Functions
	OGRPoint ()
	Create an empty point.

	OGRPoint (double x, double y)
	Create a point. More...

	OGRPoint (double x, double y, double z)
	Create a point. More...

	OGRPoint (double x, double y, double z, double m)
	Create a point. More...

	OGRPoint (const OGRPoint &other)
	Copy constructor. More...

OGRPoint &	operator= (const OGRPoint &other)
	Assignment operator. More...

int	WkbSize () const override
	Returns size of related binary representation. More...

OGRErr	importFromWkb (const unsigned char *, int, OGRwkbVariant, int &nBytesConsumedOut) override
	Assign geometry from well known binary data. More...

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

OGRErr	importFromWkt (const char **) override
	deprecated

OGRErr	exportToWkt (char **ppszDstText, OGRwkbVariant=wkbVariantOldOgc) const override
	Convert a geometry into well known text format. More...

virtual int	getDimension () const override
	Get the dimension of this object. More...

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

virtual void	empty () override
	Clear geometry information. More...

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

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

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

double	getX () const
	Return x. More...

double	getY () const
	Return y. More...

double	getZ () const
	Return z. More...

double	getM () const
	Return m.

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

void	setX (double xIn)
	Set x. More...

void	setY (double yIn)
	Set y. More...

void	setZ (double zIn)
	Set z. More...

void	setM (double mIn)
	Set m. More...

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

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

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

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

virtual OGRwkbGeometryType	getGeometryType () const override
	Fetch geometry type. More...

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

virtual void	flattenTo2D () override
	Convert geometry to strictly 2D. More...

virtual void	accept (IOGRGeometryVisitor *visitor) override
	Accept a visitor. More...

virtual void	accept (IOGRConstGeometryVisitor *visitor) const override
	Accept a visitor. More...

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

Public Member Functions inherited from OGRGeometry
	OGRGeometry (const OGRGeometry &other)
	Copy constructor. More...

OGRGeometry &	operator= (const OGRGeometry &other)
	Assignment operator. More...

bool	operator== (const OGRGeometry &other) const
	Returns if two geometries are equal. More...

bool	operator!= (const OGRGeometry &other) const
	Returns if two geometries are different. More...

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

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

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

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

OGRBoolean	Is3D () const

OGRBoolean	IsMeasured () const

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

OGRErr	importFromWkb (const GByte *, int=-1, OGRwkbVariant=wkbVariantOldOgc)
	Assign geometry from well known binary data. More...

OGRErr	importFromWkt (char ppszInput) CPL_WARN_DEPRECATED("Use importFromWkt( const char) instead")
	Deprecated. More...

OGRwkbGeometryType	getIsoGeometryType () const
	Get the geometry type that conforms with ISO SQL/MM Part3. More...

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

virtual char *	exportToGML (const char const papszOptions=nullptr) 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 GEOSGeom	exportToGEOS (GEOSContextHandle_t hGEOSCtxt) const CPL_WARN_UNUSED_RESULT
	Returns a GEOSGeom object corresponding to the geometry. More...

virtual OGRBoolean	hasCurveGeometry (int bLookForNonLinear=FALSE) const
	Returns if this geometry is or has curve geometry. More...

virtual OGRGeometry *	getCurveGeometry (const char const papszOptions=nullptr) const CPL_WARN_UNUSED_RESULT
	Return curve version of this geometry. More...

virtual OGRGeometry *	getLinearGeometry (double dfMaxAngleStepSizeDegrees=0, const char const papszOptions=nullptr) const CPL_WARN_UNUSED_RESULT
	Return, possibly approximate, non-curve version of this geometry. More...

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

virtual void	set3D (OGRBoolean bIs3D)
	Add or remove the Z coordinate dimension. More...

virtual void	setMeasured (OGRBoolean bIsMeasured)
	Add or remove the M coordinate dimension. More...

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

OGRSpatialReference *	getSpatialReference (void) const
	Returns spatial reference system for object. 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	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	Contains (const OGRGeometry *) const
	Test for containment. More...

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

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

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

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

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

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

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

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

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

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

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

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

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

virtual OGRGeometry *	DelaunayTriangulation (double dfTolerance, int bOnlyEdges) const CPL_WARN_UNUSED_RESULT
	Return a Delaunay triangulation of the vertices of the geometry. More...

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

virtual double	Distance3D (const OGRGeometry *poOtherGeom) const
	Returns the 3D distance between two geometries. More...

OGRPoint *	toPoint ()
	Down-cast to OGRPoint*. More...

const OGRPoint *	toPoint () const
	Down-cast to OGRPoint*. More...

OGRCurve *	toCurve ()
	Down-cast to OGRCurve*. More...

const OGRCurve *	toCurve () const
	Down-cast to OGRCurve*. More...

OGRSimpleCurve *	toSimpleCurve ()
	Down-cast to OGRSimpleCurve*. More...

const OGRSimpleCurve *	toSimpleCurve () const
	Down-cast to OGRSimpleCurve*. More...

OGRLineString *	toLineString ()
	Down-cast to OGRLineString*. More...

const OGRLineString *	toLineString () const
	Down-cast to OGRLineString*. More...

OGRLinearRing *	toLinearRing ()
	Down-cast to OGRLinearRing*. More...

const OGRLinearRing *	toLinearRing () const
	Down-cast to OGRLinearRing*. More...

OGRCircularString *	toCircularString ()
	Down-cast to OGRCircularString*. More...

const OGRCircularString *	toCircularString () const
	Down-cast to OGRCircularString*. More...

OGRCompoundCurve *	toCompoundCurve ()
	Down-cast to OGRCompoundCurve*. More...

const OGRCompoundCurve *	toCompoundCurve () const
	Down-cast to OGRCompoundCurve*. More...

OGRSurface *	toSurface ()
	Down-cast to OGRSurface*. More...

const OGRSurface *	toSurface () const
	Down-cast to OGRSurface*. More...

OGRPolygon *	toPolygon ()
	Down-cast to OGRPolygon*. More...

const OGRPolygon *	toPolygon () const
	Down-cast to OGRPolygon*. More...

OGRTriangle *	toTriangle ()
	Down-cast to OGRTriangle*. More...

const OGRTriangle *	toTriangle () const
	Down-cast to OGRTriangle*. More...

OGRCurvePolygon *	toCurvePolygon ()
	Down-cast to OGRCurvePolygon*. More...

const OGRCurvePolygon *	toCurvePolygon () const
	Down-cast to OGRCurvePolygon*. More...

OGRGeometryCollection *	toGeometryCollection ()
	Down-cast to OGRGeometryCollection*. More...

const OGRGeometryCollection *	toGeometryCollection () const
	Down-cast to OGRGeometryCollection*. More...

OGRMultiPoint *	toMultiPoint ()
	Down-cast to OGRMultiPoint*. More...

const OGRMultiPoint *	toMultiPoint () const
	Down-cast to OGRMultiPoint*. More...

OGRMultiLineString *	toMultiLineString ()
	Down-cast to OGRMultiLineString*. More...

const OGRMultiLineString *	toMultiLineString () const
	Down-cast to OGRMultiLineString*. More...

OGRMultiPolygon *	toMultiPolygon ()
	Down-cast to OGRMultiPolygon*. More...

const OGRMultiPolygon *	toMultiPolygon () const
	Down-cast to OGRMultiPolygon*. More...

OGRMultiCurve *	toMultiCurve ()
	Down-cast to OGRMultiCurve*. More...

const OGRMultiCurve *	toMultiCurve () const
	Down-cast to OGRMultiCurve*. More...

OGRMultiSurface *	toMultiSurface ()
	Down-cast to OGRMultiSurface*. More...

const OGRMultiSurface *	toMultiSurface () const
	Down-cast to OGRMultiSurface*. More...

OGRPolyhedralSurface *	toPolyhedralSurface ()
	Down-cast to OGRPolyhedralSurface*. More...

const OGRPolyhedralSurface *	toPolyhedralSurface () const
	Down-cast to OGRPolyhedralSurface*. More...

OGRTriangulatedSurface *	toTriangulatedSurface ()
	Down-cast to OGRTriangulatedSurface*. More...

const OGRTriangulatedSurface *	toTriangulatedSurface () const
	Down-cast to OGRTriangulatedSurface*. More...

Additional Inherited Members
Static Public Member Functions inherited from OGRGeometry
static GEOSContextHandle_t	createGEOSContext ()
	Create a new GEOS context. More...

static void	freeGEOSContext (GEOSContextHandle_t hGEOSCtxt)
	Destroy a GEOS context. More...

static OGRGeometryH	ToHandle (OGRGeometry *poGeom)
	Convert a OGRGeometry* to a OGRGeometryH. More...

static OGRGeometry *	FromHandle (OGRGeometryH hGeom)
	Convert a OGRGeometryH to a OGRGeometry*. More...

Detailed Description

Point class.

Implements SFCOM IPoint methods.

Constructor & Destructor Documentation

◆ OGRPoint() [1/4]

OGRPoint::OGRPoint	(	double	xIn,
		double	yIn
	)

Create a point.

Parameters

xIn	x
yIn	y

◆ OGRPoint() [2/4]

OGRPoint::OGRPoint	(	double	xIn,
		double	yIn,
		double	zIn
	)

Create a point.

Parameters

xIn	x
yIn	y
zIn	z

◆ OGRPoint() [3/4]

OGRPoint::OGRPoint	(	double	xIn,
		double	yIn,
		double	zIn,
		double	mIn
	)

Create a point.

Parameters

xIn	x
yIn	y
zIn	z
mIn	m

◆ OGRPoint() [4/4]

OGRPoint::OGRPoint ( const OGRPoint & other )

default

Copy constructor.

Note: before GDAL 2.1, only the default implementation of the constructor existed, which could be unsafe to use.

Since: GDAL 2.1

Member Function Documentation

◆ accept() [1/2]

virtual void OGRPoint::accept ( IOGRGeometryVisitor * visitor )

inlineoverridevirtual

Accept a visitor.

Implements OGRGeometry.

◆ accept() [2/2]

virtual void OGRPoint::accept ( IOGRConstGeometryVisitor * visitor ) const

inlineoverridevirtual

Accept a visitor.

Implements OGRGeometry.

◆ clone()

OGRGeometry * OGRPoint::clone ( ) const

overridevirtual

Make a copy of this object.

This method relates to the SFCOM IGeometry::clone() method.

This method is the same as the C function OGR_G_Clone().

Returns: a new object instance with the same geometry, and spatial reference system as the original.

Implements OGRGeometry.

◆ empty()

void OGRPoint::empty ( )

overridevirtual

Clear geometry information.

This restores the geometry to its initial state after construction, and before assignment of actual geometry.

This method relates to the SFCOM IGeometry::Empty() method.

This method is the same as the C function OGR_G_Empty().

Implements OGRGeometry.

◆ Equals()

OGRBoolean OGRPoint::Equals ( const OGRGeometry * ) const

overridevirtual

Returns TRUE if two geometries are equivalent.

This operation implements the SQL/MM ST_OrderingEquals() operation.

The comparison is done in a structural way, that is to say that the geometry types must be identical, as well as the number and ordering of sub-geometries and vertices. Or equivalently, two geometries are considered equal by this method if their WKT/WKB representation is equal. Note: this must be distinguished for equality in a spatial way (which is the purpose of the ST_Equals() operation).

This method is the same as the C function OGR_G_Equals().

Returns: TRUE if equivalent or FALSE otherwise.

Implements OGRGeometry.

◆ exportToWkb()

OGRErr OGRPoint::exportToWkb	(	OGRwkbByteOrder	eByteOrder,
		unsigned char *	pabyData,
		OGRwkbVariant	eWkbVariant = `wkbVariantOldOgc`
	)		const

overridevirtual

Convert a geometry into well known binary format.

This method relates to the SFCOM IWks::ExportToWKB() method.

This method is the same as the C function OGR_G_ExportToWkb() or OGR_G_ExportToIsoWkb(), depending on the value of eWkbVariant.

Parameters

eByteOrder	One of wkbXDR or wkbNDR indicating MSB or LSB byte order respectively.
pabyData	a buffer into which the binary representation is written. This buffer must be at least OGRGeometry::WkbSize() byte in size.
eWkbVariant	What standard to use when exporting geometries with three dimensions (or more). The default wkbVariantOldOgc is the historical OGR variant. wkbVariantIso is the variant defined in ISO SQL/MM and adopted by OGC for SFSQL 1.2.

Returns: Currently OGRERR_NONE is always returned.

Implements OGRGeometry.

◆ exportToWkt()

OGRErr OGRPoint::exportToWkt	(	char **	ppszDstText,
		OGRwkbVariant	eWkbVariant = `wkbVariantOldOgc`
	)		const

overridevirtual

Convert a geometry into well known text format.

This method relates to the SFCOM IWks::ExportToWKT() method.

This method is the same as the C function OGR_G_ExportToWkt().

Parameters

ppszDstText	a text buffer is allocated by the program, and assigned to the passed pointer. After use, *ppszDstText should be freed with CPLFree().
eWkbVariant	the specification that must be conformed too : wbkVariantOgc for old-style 99-402 extended dimension (Z) WKB types wbkVariantIso for SFSQL 1.2 and ISO SQL/MM Part 3

Returns: Currently OGRERR_NONE is always returned.

Implements OGRGeometry.

◆ flattenTo2D()

void OGRPoint::flattenTo2D ( )

overridevirtual

Convert geometry to strictly 2D.

In a sense this converts all Z coordinates to 0.0.

This method is the same as the C function OGR_G_FlattenTo2D().

Implements OGRGeometry.

◆ getDimension()

int OGRPoint::getDimension ( ) const

overridevirtual

Get the dimension of this object.

This method corresponds to the SFCOM IGeometry::GetDimension() method. It indicates the dimension of the object, but does not indicate the dimension of the underlying space (as indicated by OGRGeometry::getCoordinateDimension()).

This method is the same as the C function OGR_G_GetDimension().

Returns: 0 for points, 1 for lines and 2 for surfaces.

Implements OGRGeometry.

◆ getEnvelope() [1/2]

void OGRPoint::getEnvelope ( OGREnvelope * psEnvelope ) const

overridevirtual

Computes and returns the bounding envelope for this geometry in the passed psEnvelope structure.

This method is the same as the C function OGR_G_GetEnvelope().

Parameters

psEnvelope the structure in which to place the results.

Implements OGRGeometry.

◆ getEnvelope() [2/2]

void OGRPoint::getEnvelope ( OGREnvelope3D * psEnvelope ) const

overridevirtual

Computes and returns the bounding envelope (3D) for this geometry in the passed psEnvelope structure.

This method is the same as the C function OGR_G_GetEnvelope3D().

Parameters

psEnvelope the structure in which to place the results.

Since: OGR 1.9.0

Implements OGRGeometry.

◆ getGeometryName()

const char * OGRPoint::getGeometryName ( ) const

overridevirtual

Fetch WKT name for geometry type.

There is no SFCOM analog to this method.

This method is the same as the C function OGR_G_GetGeometryName().

Returns: name used for this geometry type in well known text format. The returned pointer is to a static internal string and should not be modified or freed.

Implements OGRGeometry.

◆ getGeometryType()

OGRwkbGeometryType OGRPoint::getGeometryType ( ) const

overridevirtual

Fetch geometry type.

Note that the geometry type may include the 2.5D flag. To get a 2D flattened version of the geometry type apply the wkbFlatten() macro to the return result.

This method is the same as the C function OGR_G_GetGeometryType().

Returns: the geometry type code.

Implements OGRGeometry.

◆ getX()

double OGRPoint::getX ( ) const

inline

Return x.

Fetch X coordinate.

Relates to the SFCOM IPoint::get_X() method.

Returns: the X coordinate of this point.

◆ getY()

double OGRPoint::getY ( ) const

inline

Return y.

Fetch Y coordinate.

Relates to the SFCOM IPoint::get_Y() method.

Returns: the Y coordinate of this point.

◆ getZ()

double OGRPoint::getZ ( ) const

inline

Return z.

Fetch Z coordinate.

Relates to the SFCOM IPoint::get_Z() method.

Returns: the Z coordinate of this point, or zero if it is a 2D point.

◆ importFromWkb()

OGRErr OGRPoint::importFromWkb	(	const unsigned char *	pabyData,
		int	nSize,
		OGRwkbVariant	eWkbVariant,
		int &	nBytesConsumedOut
	)

overridevirtual

Assign geometry from well known binary data.

The object must have already been instantiated as the correct derived type of geometry object to match the binaries type. This method is used by the OGRGeometryFactory class, but not normally called by application code.

This method relates to the SFCOM IWks::ImportFromWKB() method.

This method is the same as the C function OGR_G_ImportFromWkb().

Parameters

pabyData	the binary input data.
nSize	the size of pabyData in bytes, or -1 if not known.
eWkbVariant	if wkbVariantPostGIS1, special interpretation is done for curve geometries code
nBytesConsumedOut	output parameter. Number of bytes consumed.

Returns: OGRERR_NONE if all goes well, otherwise any of OGRERR_NOT_ENOUGH_DATA, OGRERR_UNSUPPORTED_GEOMETRY_TYPE, or OGRERR_CORRUPT_DATA may be returned.

Since: GDAL 2.3

Implements OGRGeometry.

◆ Intersects()

OGRBoolean OGRPoint::Intersects ( const OGRGeometry * poOtherGeom ) const

overridevirtual

Do these features intersect?

Determines whether two geometries intersect. If GEOS is enabled, then this is done in rigorous fashion otherwise TRUE is returned if the envelopes (bounding boxes) of the two geometries overlap.

The poOtherGeom argument may be safely NULL, but in this case the method will always return TRUE. That is, a NULL geometry is treated as being everywhere.

This method is the same as the C function OGR_G_Intersects().

Parameters

poOtherGeom the other geometry to test against.

Returns: TRUE if the geometries intersect, otherwise FALSE.

Reimplemented from OGRGeometry.

◆ IsEmpty()

virtual OGRBoolean OGRPoint::IsEmpty ( ) const

inlineoverridevirtual

Returns TRUE (non-zero) if the object has no points.

Normally this returns FALSE except between when an object is instantiated and points have been assigned.

This method relates to the SFCOM IGeometry::IsEmpty() method.

Returns: TRUE if object is empty, otherwise FALSE.

Implements OGRGeometry.

◆ operator=()

OGRPoint & OGRPoint::operator= ( const OGRPoint & other )

Assignment operator.

Note: before GDAL 2.1, only the default implementation of the operator existed, which could be unsafe to use.

Since: GDAL 2.1

◆ setCoordinateDimension()

void OGRPoint::setCoordinateDimension ( int nNewDimension )

overridevirtual

Set the coordinate dimension.

This method sets the explicit coordinate dimension. Setting the coordinate dimension of a geometry to 2 should zero out any existing Z values. Setting the dimension of a geometry collection, a compound curve, a polygon, etc. will affect the children geometries. This will also remove the M dimension if present before this call.

Deprecated:: use set3D() or setMeasured().

Parameters

nNewDimension New coordinate dimension value, either 2 or 3.

Reimplemented from OGRGeometry.

◆ setM()

void OGRPoint::setM ( double mIn )

inline

Set m.

Parameters

mIn m

◆ setX()

void OGRPoint::setX ( double xIn )

inline

Set x.

Assign point X coordinate.

Parameters

xIn x

There is no corresponding SFCOM method.

◆ setY()

void OGRPoint::setY ( double yIn )

inline

Set y.

Assign point Y coordinate.

Parameters

yIn y

There is no corresponding SFCOM method.

◆ setZ()

void OGRPoint::setZ ( double zIn )

inline

Set z.

Assign point Z coordinate.

Parameters

zIn z

Calling this method will force the geometry coordinate dimension to 3D (wkbPoint|wkbZ).

There is no corresponding SFCOM method.

◆ swapXY()

void OGRPoint::swapXY ( )

overridevirtual

Swap x and y coordinates.

Since: OGR 1.8.0

Reimplemented from OGRGeometry.

◆ transform()

OGRErr OGRPoint::transform ( OGRCoordinateTransformation * poCT )

overridevirtual

Apply arbitrary coordinate transformation to geometry.

This method will transform the coordinates of a geometry from their current spatial reference system to a new target spatial reference system. Normally this means reprojecting the vectors, but it could include datum shifts, and changes of units.

Note that this method does not require that the geometry already have a spatial reference system. It will be assumed that they can be treated as having the source spatial reference system of the OGRCoordinateTransformation object, and the actual SRS of the geometry will be ignored. On successful completion the output OGRSpatialReference of the OGRCoordinateTransformation will be assigned to the geometry.

This method is the same as the C function OGR_G_Transform().

Parameters

poCT	the transformation to apply.

Returns: OGRERR_NONE on success or an error code.

Implements OGRGeometry.

◆ Within()

OGRBoolean OGRPoint::Within ( const OGRGeometry * poOtherGeom ) const

overridevirtual

Test for containment.

Tests if actual geometry object is within the passed geometry.

Geometry validity is not checked. In case you are unsure of the validity of the input geometries, call IsValid() before, otherwise the result might be wrong.

This method is the same as the C function OGR_G_Within().

This method is built on the GEOS library, check it for the definition of the geometry operation. If OGR is built without the GEOS library, this method will always fail, issuing a CPLE_NotSupported error.

Parameters

poOtherGeom the geometry to compare to this geometry.

Returns: TRUE if poOtherGeom is within this geometry, otherwise FALSE.

Reimplemented from OGRGeometry.

◆ WkbSize()

int OGRPoint::WkbSize ( ) const

overridevirtual

Returns size of related binary representation.

This method returns the exact number of bytes required to hold the well known binary representation of this geometry object. Its computation may be slightly expensive for complex geometries.

This method relates to the SFCOM IWks::WkbSize() method.

This method is the same as the C function OGR_G_WkbSize().

Returns: size of binary representation in bytes.

Implements OGRGeometry.

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

ogr_geometry.h
ogrpoint.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ OGRPoint() [1/4]

◆ OGRPoint() [2/4]

◆ OGRPoint() [3/4]

◆ OGRPoint() [4/4]

Member Function Documentation

◆ accept() [1/2]

◆ accept() [2/2]

◆ clone()

◆ empty()

◆ Equals()

◆ exportToWkb()

◆ exportToWkt()

◆ flattenTo2D()

◆ getDimension()

◆ getEnvelope() [1/2]

◆ getEnvelope() [2/2]

◆ getGeometryName()

◆ getGeometryType()

◆ getX()

◆ getY()

◆ getZ()

◆ importFromWkb()

◆ Intersects()

◆ IsEmpty()

◆ operator=()

◆ setCoordinateDimension()

◆ setM()

◆ setX()

◆ setY()

◆ setZ()

◆ swapXY()

◆ transform()

◆ Within()

◆ WkbSize()