Multi polygon geometry collection. More...

#include <qgsmultipolygonv2.h>

Inheritance diagram for QgsMultiPolygonV2:

Public Member Functions
	QgsMultiPolygonV2 ()

virtual bool	addGeometry (QgsAbstractGeometryV2 *g) override
	Adds a geometry and takes ownership. More...

QDomElement	asGML2 (QDomDocument &doc, int precision=17, const QString &ns="gml") const override
	Returns a GML2 representation of the geometry. More...

QDomElement	asGML3 (QDomDocument &doc, int precision=17, const QString &ns="gml") const override
	Returns a GML3 representation of the geometry. More...

QString	asJSON (int precision=17) const override
	Returns a GeoJSON representation of the geometry. More...

virtual QgsAbstractGeometryV2 *	boundary () const override
	Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the geometry). More...

QgsMultiPolygonV2 *	clone () const override
	Clones the geometry by performing a deep copy. More...

bool	fromWkt (const QString &wkt) override
	Sets the geometry from a WKT string. More...

virtual QString	geometryType () const override
	Returns a unique string representing the geometry type. More...

QgsAbstractGeometryV2 *	toCurveType () const override
	Returns the geometry converted to the more generic curve type QgsMultiSurfaceV2. More...

Public Member Functions inherited from QgsMultiSurfaceV2
	QgsMultiSurfaceV2 ()

QDomElement	asGML2 (QDomDocument &doc, int precision=17, const QString &ns="gml") const override
	Returns a GML2 representation of the geometry. More...

QDomElement	asGML3 (QDomDocument &doc, int precision=17, const QString &ns="gml") const override
	Returns a GML3 representation of the geometry. More...

QString	asJSON (int precision=17) const override
	Returns a GeoJSON representation of the geometry. More...

QgsMultiSurfaceV2 *	clone () const override
	Clones the geometry by performing a deep copy. More...

bool	fromWkt (const QString &wkt) override
	Sets the geometry from a WKT string. More...

Public Member Functions inherited from QgsGeometryCollectionV2
	QgsGeometryCollectionV2 ()

	QgsGeometryCollectionV2 (const QgsGeometryCollectionV2 &c)

virtual	~QgsGeometryCollectionV2 ()

virtual bool	addMValue (double mValue=0) override
	Adds a measure to the geometry, initialized to a preset value. More...

virtual bool	addZValue (double zValue=0) override
	Adds a z-dimension to the geometry, initialized to a preset value. More...

virtual double	area () const override
	Returns the area of the geometry. More...

unsigned char *	asWkb (int &binarySize) const override
	Returns a WKB representation of the geometry. More...

QString	asWkt (int precision=17) const override
	Returns a WKT representation of the geometry. More...

virtual QgsRectangle	boundingBox () const override
	Returns the minimal bounding box for the geometry. More...

virtual void	clear () override
	Clears the geometry, ie reset it to a null geometry. More...

virtual double	closestSegment (const QgsPointV2 &pt, QgsPointV2 &segmentPt, QgsVertexId &vertexAfter, bool *leftOf, double epsilon) const override
	Searches for the closest segment of the geometry to a given point. More...

virtual QgsCoordinateSequenceV2	coordinateSequence () const override
	Retrieves the sequence of geometries, rings and nodes. More...

virtual bool	deleteVertex (QgsVertexId position) override
	Deletes a vertex within the geometry. More...

virtual int	dimension () const override
	Returns the inherent dimension of the geometry. More...

virtual void	draw (QPainter &p) const override
	Draws the geometry using the specified QPainter. More...

virtual bool	dropMValue () override
	Drops any measure values which exist in the geometry. More...

virtual bool	dropZValue () override
	Drops any z-dimensions which exist in the geometry. More...

bool	fromWkb (QgsConstWkbPtr wkb) override
	Sets the geometry from a WKB string. More...

const QgsAbstractGeometryV2 *	geometryN (int n) const
	Returns a const reference to a geometry from within the collection. More...

QgsAbstractGeometryV2 *	geometryN (int n)
	Returns a geometry from within the collection. More...

bool	hasCurvedSegments () const override
	Returns true if the geometry contains curved segments. More...

virtual bool	insertGeometry (QgsAbstractGeometryV2 *g, int index)
	Inserts a geometry before a specified index and takes ownership. More...

virtual bool	insertVertex (QgsVertexId position, const QgsPointV2 &vertex) override
	Inserts a vertex into the geometry. More...

virtual double	length () const override
	Returns the length of the geometry. More...

virtual bool	moveVertex (QgsVertexId position, const QgsPointV2 &newPos) override
	Moves a vertex within the geometry. More...

virtual int	nCoordinates () const override
	Returns the number of nodes contained in the geometry. More...

bool	nextVertex (QgsVertexId &id, QgsPointV2 &vertex) const override
	Returns next vertex id and coordinates. More...

int	numGeometries () const
	Returns the number of geometries within the collection. More...

QgsGeometryCollectionV2 &	operator= (const QgsGeometryCollectionV2 &c)

virtual int	partCount () const override
	Returns count of parts contained in the geometry. More...

virtual double	perimeter () const override
	Returns the perimeter of the geometry. More...

virtual bool	removeGeometry (int nr)
	Removes a geometry from the collection. More...

virtual int	ringCount (int part=0) const override

QgsAbstractGeometryV2 *	segmentize (double tolerance=M_PI_2/90, SegmentationToleranceType toleranceType=MaximumAngle) const override
	Returns a geometry without curves. More...

virtual void	transform (const QgsCoordinateTransform &ct, QgsCoordinateTransform::TransformDirection d=QgsCoordinateTransform::ForwardTransform, bool transformZ=false) override
	Transforms the geometry using a coordinate transform. More...

void	transform (const QTransform &t) override
	Transforms the geometry using a QTransform object. More...

double	vertexAngle (QgsVertexId vertex) const override
	Returns approximate rotation angle for a vertex. More...

virtual QgsPointV2	vertexAt (QgsVertexId id) const override
	Returns the point corresponding to a specified vertex id. More...

virtual int	vertexCount (int part=0, int ring=0) const override

int	wkbSize () const override
	Returns the size of the WKB representation of the geometry. More...

Public Member Functions inherited from QgsAbstractGeometryV2
	QgsAbstractGeometryV2 ()

	QgsAbstractGeometryV2 (const QgsAbstractGeometryV2 &geom)

virtual	~QgsAbstractGeometryV2 ()

virtual QgsPointV2	centroid () const
	Returns the centroid of the geometry. More...

virtual bool	convertTo (QgsWKBTypes::Type type)
	Converts the geometry to a specified type. More...

bool	is3D () const
	Returns true if the geometry is 3D and contains a z-value. More...

bool	isEmpty () const
	Returns true if the geometry is empty. More...

bool	isMeasure () const
	Returns true if the geometry contains m values. More...

virtual QgsAbstractGeometryV2 &	operator= (const QgsAbstractGeometryV2 &geom)

QgsWKBTypes::Type	wkbType () const
	Returns the WKB type of the geometry. More...

QString	wktTypeStr () const
	Returns the WKT type string of the geometry. More...

Protected Member Functions
virtual bool	wktOmitChildType () const override
	Returns whether child type names are omitted from Wkt representations of the collection. More...

Protected Member Functions inherited from QgsGeometryCollectionV2
virtual QgsRectangle	calculateBoundingBox () const override
	Default calculator for the minimal bounding box for the geometry. More...

virtual void	clearCache () const override
	Clears any cached parameters associated with the geometry, eg bounding boxes. More...

bool	fromCollectionWkt (const QString &wkt, const QList< QgsAbstractGeometryV2 *> &subtypes, const QString &defaultChildWkbType=QString())
	Reads a collection from a WKT string. More...

Protected Member Functions inherited from QgsAbstractGeometryV2
void	setZMTypeFromSubGeometry (const QgsAbstractGeometryV2 *subggeom, QgsWKBTypes::Type baseGeomType)
	Updates the geometry type based on whether sub geometries contain z or m values. More...

Additional Inherited Members
Public Types inherited from QgsAbstractGeometryV2
enum	SegmentationToleranceType { MaximumAngle = 0, MaximumDifference }
	Segmentation tolerance as maximum angle or maximum difference between approximation and circle. More...

Protected Attributes inherited from QgsGeometryCollectionV2
QVector< QgsAbstractGeometryV2 *>	mGeometries

Protected Attributes inherited from QgsAbstractGeometryV2
QgsWKBTypes::Type	mWkbType

Detailed Description

Multi polygon geometry collection.

Note: added in QGIS 2.10; this API is not considered stable and may change for 2.12

Definition at line 27 of file qgsmultipolygonv2.h.

Constructor & Destructor Documentation

◆ QgsMultiPolygonV2()

QgsMultiPolygonV2::QgsMultiPolygonV2 ( )

Definition at line 25 of file qgsmultipolygonv2.cpp.

Member Function Documentation

◆ addGeometry()

bool QgsMultiPolygonV2::addGeometry ( QgsAbstractGeometryV2 * g )

overridevirtual

Adds a geometry and takes ownership.

Returns true in case of success

Reimplemented from QgsMultiSurfaceV2.

Definition at line 116 of file qgsmultipolygonv2.cpp.

◆ asGML2()

QDomElement QgsMultiPolygonV2::asGML2	(	QDomDocument &	doc,
		int	precision = `17`,
		const QString &	ns = `"gml"`
	)		const

overridevirtual

Returns a GML2 representation of the geometry.

Parameters

doc	DOM document
precision	number of decimal places for coordinates
ns	XML namespace

See also: asWkb; asWkt; asGML3; asJSON

Reimplemented from QgsGeometryCollectionV2.

Definition at line 41 of file qgsmultipolygonv2.cpp.

◆ asGML3()

QDomElement QgsMultiPolygonV2::asGML3	(	QDomDocument &	doc,
		int	precision = `17`,
		const QString &	ns = `"gml"`
	)		const

overridevirtual

Returns a GML3 representation of the geometry.

Parameters

doc	DOM document
precision	number of decimal places for coordinates
ns	XML namespace

See also: asWkb; asWkt; asGML2; asJSON

Reimplemented from QgsGeometryCollectionV2.

Definition at line 58 of file qgsmultipolygonv2.cpp.

◆ asJSON()

QString QgsMultiPolygonV2::asJSON ( int precision = 17 ) const

overridevirtual

Returns a GeoJSON representation of the geometry.

Parameters

precision number of decimal places for coordinates

See also: asWkb; asWkt; asGML2; asGML3

Reimplemented from QgsGeometryCollectionV2.

Definition at line 74 of file qgsmultipolygonv2.cpp.

◆ boundary()

QgsAbstractGeometryV2 * QgsMultiPolygonV2::boundary ( ) const

overridevirtual

Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the geometry).

For instance, a polygon geometry will have a boundary consisting of the linestrings for each ring in the polygon.

Returns: boundary for geometry. May be null for some geometry types.

Note: added in QGIS 2.18

Reimplemented from QgsMultiSurfaceV2.

Definition at line 138 of file qgsmultipolygonv2.cpp.

◆ clone()

QgsMultiPolygonV2 * QgsMultiPolygonV2::clone ( ) const

overridevirtual

Clones the geometry by performing a deep copy.

Reimplemented from QgsGeometryCollectionV2.

Definition at line 31 of file qgsmultipolygonv2.cpp.

◆ fromWkt()

bool QgsMultiPolygonV2::fromWkt ( const QString & wkt )

overridevirtual

Sets the geometry from a WKT string.

See also: fromWkb

Reimplemented from QgsGeometryCollectionV2.

Definition at line 36 of file qgsmultipolygonv2.cpp.

◆ geometryType()

virtual QString QgsMultiPolygonV2::geometryType ( ) const

inlineoverridevirtual

Returns a unique string representing the geometry type.

See also: wkbType; wktTypeStr

Reimplemented from QgsMultiSurfaceV2.

Definition at line 31 of file qgsmultipolygonv2.h.

◆ toCurveType()

QgsAbstractGeometryV2 * QgsMultiPolygonV2::toCurveType ( ) const

overridevirtual

Returns the geometry converted to the more generic curve type QgsMultiSurfaceV2.

Returns: the converted geometry. Caller takes ownership

Reimplemented from QgsAbstractGeometryV2.

Definition at line 128 of file qgsmultipolygonv2.cpp.

◆ wktOmitChildType()

virtual bool QgsMultiPolygonV2::wktOmitChildType ( ) const

inlineoverrideprotectedvirtual

Returns whether child type names are omitted from Wkt representations of the collection.

Note: added in QGIS 2.12

Reimplemented from QgsGeometryCollectionV2.

Definition at line 54 of file qgsmultipolygonv2.h.

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

/tmp/buildd/qgis-2.18.21+99unstable/src/core/geometry/qgsmultipolygonv2.h
/tmp/buildd/qgis-2.18.21+99unstable/src/core/geometry/qgsmultipolygonv2.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsMultiPolygonV2()

Member Function Documentation

◆ addGeometry()

◆ asGML2()

◆ asGML3()

◆ asJSON()

◆ boundary()

◆ clone()

◆ fromWkt()

◆ geometryType()

◆ toCurveType()

◆ wktOmitChildType()