OGRTriangle Class Reference

Triangle class. More...

#include <ogr_geometry.h>

Inheritance diagram for OGRTriangle:

List of all members.

Public Member Functions
	OGRTriangle ()
	Constructor.
	OGRTriangle (const OGRPoint &p, const OGRPoint &q, const OGRPoint &r)
	Construct a triangle from points.
	OGRTriangle (const OGRTriangle &other)
	Copy constructor.
	OGRTriangle (const OGRPolygon &other, OGRErr &eErr)
	Constructs an OGRTriangle from a valid OGRPolygon.
OGRTriangle &	operator= (const OGRTriangle &other)
	Assignment operator.
virtual	~OGRTriangle ()
	Destructor.
virtual const char *	getGeometryName () const CPL_OVERRIDE
	Fetch WKT name for geometry type.
virtual OGRwkbGeometryType	getGeometryType () const CPL_OVERRIDE
	Fetch geometry type.
virtual OGRErr	importFromWkb (unsigned char *, int=-1, OGRwkbVariant=wkbVariantOldOgc) CPL_OVERRIDE
	Assign geometry from well known binary data.
virtual OGRErr	addRingDirectly (OGRCurve *poNewRing) CPL_OVERRIDE
	Add a ring to a polygon.

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Detailed Description

Triangle class.

Since:

GDAL 2.2

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Constructor & Destructor Documentation

OGRTriangle::OGRTriangle	(	const OGRPoint &	p,
		const OGRPoint &	q,
		const OGRPoint &	r
	)

Construct a triangle from points.

Parameters:

p	Point 1
q	Point 2
r	Point 3

OGRTriangle::OGRTriangle	(	const OGRPolygon &	other,
		OGRErr &	eErr
	)

Constructs an OGRTriangle from a valid OGRPolygon.

In case of error, NULL is returned.

Parameters:

other	the Polygon we wish to construct a triangle from
eErr	encapsulates an error code; contains OGRERR_NONE if the triangle is constructed successfully

OGRTriangle::~OGRTriangle

(

)

[virtual]

Destructor.

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Member Function Documentation

OGRErr OGRTriangle::addRingDirectly

(

OGRCurve *

poNewRing

)

[virtual]

Add a ring to a polygon.

If the polygon has no external ring (it is empty) this will be used as the external ring, otherwise it is used as an internal ring. Ownership of the passed ring is assumed by the OGRCurvePolygon, but otherwise this method operates the same as OGRCurvePolygon::AddRing().

This method has no SFCOM analog.

Parameters:

poNewRing

ring to be added to the polygon.

Returns:

OGRERR_NONE in case of success

Reimplemented from OGRCurvePolygon.

const char * OGRTriangle::getGeometryName

(

)

const [virtual]

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.

Reimplemented from OGRPolygon.

OGRwkbGeometryType OGRTriangle::getGeometryType

(

)

const [virtual]

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.

Reimplemented from OGRPolygon.

OGRErr OGRTriangle::importFromWkb	(	unsigned char *	pabyData,
		int	nSize = -1,
		OGRwkbVariant	eWkbVariant = wkbVariantOldOgc
	)		[virtual]

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 zero if not known.
eWkbVariant	if wkbVariantPostGIS1, special interpretation is done for curve geometries code

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.

Reimplemented from OGRPolygon.

OGRTriangle & OGRTriangle::operator=

(

const OGRTriangle &

other

)

Assignment operator.

Parameters:

other

A triangle passed as a parameter

Returns:

OGRTriangle A copy of other

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

• ogr_geometry.h
• ogrtriangle.cpp