Curve polygon geometry type. More...

#include <qgscurvepolygonv2.h>

Inheritance diagram for QgsCurvePolygonV2:

Public Member Functions
	QgsCurvePolygonV2 ()

	QgsCurvePolygonV2 (const QgsCurvePolygonV2 &p)

	~QgsCurvePolygonV2 ()

void	addInteriorRing (QgsCurveV2 *ring)
	Adds an interior ring to the geometry (takes ownership) More...

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...

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...

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	calculateBoundingBox () const override
	Calculates the minimal bounding box for the geometry. More...

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

virtual QgsCurvePolygonV2 *	clone () const override
	Clones the geometry by performing a deep copy. More...

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 void	coordinateSequence (QList< QList< QList< QgsPointV2 > > > &coord) const override
	Retrieves the sequence of geometries, rings and nodes. More...

virtual bool	deleteVertex (const 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...

QgsCurveV2 *	exteriorRing () const

virtual bool	fromWkb (const unsigned char *wkb) override
	Sets the geometry from a WKB string. More...

virtual 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...

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

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

QgsCurveV2 *	interiorRing (int i) const

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

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

int	numInteriorRings () const

QgsCurvePolygonV2 &	operator= (const QgsCurvePolygonV2 &p)

virtual int	partCount () const override

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

QgsPointV2	pointOnSurface () const override

bool	removeInteriorRing (int nr)
	Removes ring. More...

virtual int	ringCount (int=0) const override

QgsAbstractGeometryV2 *	segmentize () const override
	Returns a version of the geometry without curves. More...

void	setExteriorRing (QgsCurveV2 *ring)
	Sets exterior ring (takes ownership) More...

void	setInteriorRings (const QList< QgsCurveV2 * > &rings)
	Sets all interior rings (takes ownership) More...

QgsPolygonV2 *	surfaceToPolygon () const override

virtual QgsPolygonV2 *	toPolygon () const

void	transform (const QgsCoordinateTransform &ct, QgsCoordinateTransform::TransformDirection d=QgsCoordinateTransform::ForwardTransform) 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 (const QgsVertexId &vertex) const override
	Returns approximate rotation angle for a vertex. More...

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

virtual int	vertexCount (int=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 ()

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

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

int	nCoordinates () const
	Returns the number of nodes contained in the geometry. 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 Attributes
QgsCurveV2 *	mExteriorRing

QList< QgsCurveV2 * >	mInteriorRings

Protected Attributes inherited from QgsAbstractGeometryV2
QgsRectangle	mBoundingBox

QgsWKBTypes::Type	mWkbType

Additional Inherited Members
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...

Static Protected Member Functions inherited from QgsAbstractGeometryV2
static bool	readWkbHeader (QgsConstWkbPtr &wkbPtr, QgsWKBTypes::Type &wkbType, bool &endianSwap, QgsWKBTypes::Type expectedType)
	Reads a WKB header and tests its validity. More...

Detailed Description

Curve polygon geometry type.

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

Definition at line 31 of file qgscurvepolygonv2.h.

Constructor & Destructor Documentation

QgsCurvePolygonV2::QgsCurvePolygonV2 ( )

Definition at line 29 of file qgscurvepolygonv2.cpp.

QgsCurvePolygonV2::QgsCurvePolygonV2 ( const QgsCurvePolygonV2 & p )

Definition at line 39 of file qgscurvepolygonv2.cpp.

QgsCurvePolygonV2::~QgsCurvePolygonV2 ( )

Definition at line 34 of file qgscurvepolygonv2.cpp.

Member Function Documentation

void QgsCurvePolygonV2::addInteriorRing ( QgsCurveV2 * ring )

Adds an interior ring to the geometry (takes ownership)

Definition at line 470 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::addMValue ( double mValue = 0 )

overridevirtual

Adds a measure to the geometry, initialized to a preset value.

Parameters

mValue initial m-value for all nodes

Returns: true on success

Note: added in QGIS 2.12

See also: addZValue

Implements QgsAbstractGeometryV2.

Definition at line 754 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::addZValue ( double zValue = 0 )

overridevirtual

Adds a z-dimension to the geometry, initialized to a preset value.

Parameters

zValue initial z-value for all nodes

Returns: true on success

Note: added in QGIS 2.12

See also: addMValue

Implements QgsAbstractGeometryV2.

Definition at line 738 of file qgscurvepolygonv2.cpp.

double QgsCurvePolygonV2::area ( ) const

overridevirtual

Returns the area of the geometry.

See also: length(); perimeter()

Reimplemented from QgsAbstractGeometryV2.

Definition at line 344 of file qgscurvepolygonv2.cpp.

QDomElement QgsCurvePolygonV2::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

Implements QgsAbstractGeometryV2.

Definition at line 282 of file qgscurvepolygonv2.cpp.

QDomElement QgsCurvePolygonV2::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

Implements QgsAbstractGeometryV2.

Definition at line 302 of file qgscurvepolygonv2.cpp.

QString QgsCurvePolygonV2::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

Implements QgsAbstractGeometryV2.

Definition at line 317 of file qgscurvepolygonv2.cpp.

unsigned char * QgsCurvePolygonV2::asWkb ( int & binarySize ) const

overridevirtual

Returns a WKB representation of the geometry.

Parameters

binarySize will be set to the size of the returned WKB string

See also: wkbSize; asWkt; asGML2; asGML3; asJSON

Implements QgsAbstractGeometryV2.

Reimplemented in QgsPolygonV2.

Definition at line 226 of file qgscurvepolygonv2.cpp.

QString QgsCurvePolygonV2::asWkt ( int precision = 17 ) const

overridevirtual

Returns a WKT representation of the geometry.

Parameters

precision number of decimal places for coordinates

See also: asWkb; asGML2; asGML3; asJSON

Implements QgsAbstractGeometryV2.

Definition at line 251 of file qgscurvepolygonv2.cpp.

QgsRectangle QgsCurvePolygonV2::calculateBoundingBox ( ) const

overridevirtual

Calculates the minimal bounding box for the geometry.

Derived classes should override this method to return the correct bounding box.

Reimplemented from QgsAbstractGeometryV2.

Definition at line 203 of file qgscurvepolygonv2.cpp.

void QgsCurvePolygonV2::clear ( )

overridevirtual

Clears the geometry, ie reset it to a null geometry.

Implements QgsAbstractGeometryV2.

Definition at line 75 of file qgscurvepolygonv2.cpp.

QgsCurvePolygonV2 * QgsCurvePolygonV2::clone ( ) const

overridevirtual

Clones the geometry by performing a deep copy.

Implements QgsAbstractGeometryV2.

Reimplemented in QgsPolygonV2.

Definition at line 70 of file qgscurvepolygonv2.cpp.

double QgsCurvePolygonV2::closestSegment	(	const QgsPointV2 &	pt,
		QgsPointV2 &	segmentPt,
		QgsVertexId &	vertexAfter,
		bool *	leftOf,
		double	epsilon
	)		const

overridevirtual

Searches for the closest segment of the geometry to a given point.

Parameters

pt	Specifies the point for search
segmentPt	storage for the closest point within the geometry
vertexAfter	storage for the id of the vertex after the closest segment
leftOf	returns if the point lies on the left of right side of the segment ( < 0 means left, > 0 means right )
epsilon	epsilon for segment snapping

Returns: squared distance to closest segment

Implements QgsAbstractGeometryV2.

Definition at line 557 of file qgscurvepolygonv2.cpp.

void QgsCurvePolygonV2::coordinateSequence ( QList< QList< QList< QgsPointV2 > > > & coord ) const

overridevirtual

Retrieves the sequence of geometries, rings and nodes.

Parameters

coord destination for coordinate sequence.

Implements QgsAbstractGeometryV2.

Definition at line 536 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::deleteVertex ( const QgsVertexId & position )

overridevirtual

Deletes a vertex within the geometry.

Parameters

position vertex id for vertex to delete

Returns: true if delete was successful

See also: insertVertex; moveVertex

Implements QgsAbstractGeometryV2.

Definition at line 651 of file qgscurvepolygonv2.cpp.

virtual int QgsCurvePolygonV2::dimension ( ) const

inlineoverridevirtual

Returns the inherent dimension of the geometry.

For example, this is 0 for a point geometry, 1 for a linestring and 2 for a polygon.

Implements QgsAbstractGeometryV2.

Definition at line 40 of file qgscurvepolygonv2.h.

void QgsCurvePolygonV2::draw ( QPainter & p ) const

overridevirtual

Draws the geometry using the specified QPainter.

Parameters

p	destination QPainter

Implements QgsAbstractGeometryV2.

Definition at line 485 of file qgscurvepolygonv2.cpp.

QgsCurveV2 * QgsCurvePolygonV2::exteriorRing ( ) const

Definition at line 430 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::fromWkb ( const unsigned char * wkb )

overridevirtual

Sets the geometry from a WKB string.

See also: fromWkt

Implements QgsAbstractGeometryV2.

Reimplemented in QgsPolygonV2.

Definition at line 85 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::fromWkt ( const QString & wkt )

overridevirtual

Sets the geometry from a WKT string.

See also: fromWkb

Implements QgsAbstractGeometryV2.

Definition at line 144 of file qgscurvepolygonv2.cpp.

virtual QString QgsCurvePolygonV2::geometryType ( ) const

inlineoverridevirtual

Returns a unique string representing the geometry type.

See also: wkbType; wktTypeStr

Implements QgsAbstractGeometryV2.

Reimplemented in QgsPolygonV2.

Definition at line 39 of file qgscurvepolygonv2.h.

bool QgsCurvePolygonV2::hasCurvedSegments ( ) const

overridevirtual

Returns true if the geometry contains curved segments.

Reimplemented from QgsAbstractGeometryV2.

Definition at line 693 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::insertVertex	(	const QgsVertexId &	position,
		const QgsPointV2 &	vertex
	)

overridevirtual

Inserts a vertex into the geometry.

Parameters

position	vertex id for position of inserted vertex
vertex	vertex to insert

Returns: true if insert was successful

See also: moveVertex; deleteVertex

Implements QgsAbstractGeometryV2.

Definition at line 604 of file qgscurvepolygonv2.cpp.

QgsCurveV2 * QgsCurvePolygonV2::interiorRing ( int i ) const

Definition at line 435 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::moveVertex	(	const QgsVertexId &	position,
		const QgsPointV2 &	newPos
	)

overridevirtual

Moves a vertex within the geometry.

Parameters

position	vertex id for vertex to move
newPos	new position of vertex

Returns: true if move was successful

See also: insertVertex; deleteVertex

Implements QgsAbstractGeometryV2.

Definition at line 629 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::nextVertex	(	QgsVertexId &	id,
		QgsPointV2 &	vertex
	)		const

overridevirtual

Returns next vertex id and coordinates.

Parameters

id	initial value should be the starting vertex id. The next vertex id will be stored in this variable if found.
vertex	container for found node

Returns: false if at end

Implements QgsAbstractGeometryV2.

Definition at line 569 of file qgscurvepolygonv2.cpp.

int QgsCurvePolygonV2::numInteriorRings ( ) const

Definition at line 425 of file qgscurvepolygonv2.cpp.

QgsCurvePolygonV2 & QgsCurvePolygonV2::operator= ( const QgsCurvePolygonV2 & p )

Definition at line 52 of file qgscurvepolygonv2.cpp.

virtual int QgsCurvePolygonV2::partCount ( ) const

inlineoverridevirtual

Implements QgsAbstractGeometryV2.

Definition at line 103 of file qgscurvepolygonv2.h.

double QgsCurvePolygonV2::perimeter ( ) const

overridevirtual

Returns the perimeter of the geometry.

See also: area(); length()

Reimplemented from QgsAbstractGeometryV2.

Definition at line 373 of file qgscurvepolygonv2.cpp.

QgsPointV2 QgsCurvePolygonV2::pointOnSurface ( ) const

overridevirtual

Implements QgsSurfaceV2.

Definition at line 385 of file qgscurvepolygonv2.cpp.

bool QgsCurvePolygonV2::removeInteriorRing ( int nr )

Removes ring.

Exterior ring is 0, first interior ring 1, ...

Definition at line 475 of file qgscurvepolygonv2.cpp.

virtual int QgsCurvePolygonV2::ringCount ( int = 0 ) const

inlineoverridevirtual

Implements QgsAbstractGeometryV2.

Definition at line 102 of file qgscurvepolygonv2.h.

QgsAbstractGeometryV2 * QgsCurvePolygonV2::segmentize ( ) const

overridevirtual

Returns a version of the geometry without curves.

Caller takes ownership of the returned geometry.

Reimplemented from QgsAbstractGeometryV2.

Definition at line 711 of file qgscurvepolygonv2.cpp.

void QgsCurvePolygonV2::setExteriorRing ( QgsCurveV2 * ring )

Sets exterior ring (takes ownership)

Definition at line 444 of file qgscurvepolygonv2.cpp.

void QgsCurvePolygonV2::setInteriorRings ( const QList< QgsCurveV2 * > & rings )

Sets all interior rings (takes ownership)

Definition at line 464 of file qgscurvepolygonv2.cpp.

QgsPolygonV2 * QgsCurvePolygonV2::surfaceToPolygon ( ) const

overridevirtual

Implements QgsSurfaceV2.

Reimplemented in QgsPolygonV2.

Definition at line 390 of file qgscurvepolygonv2.cpp.

QgsPolygonV2 * QgsCurvePolygonV2::toPolygon ( ) const

virtual

Definition at line 405 of file qgscurvepolygonv2.cpp.

void QgsCurvePolygonV2::transform	(	const QgsCoordinateTransform &	ct,
		QgsCoordinateTransform::TransformDirection	d = `QgsCoordinateTransform::ForwardTransform`
	)

overridevirtual

Transforms the geometry using a coordinate transform.

Parameters

ct	coordinate transform
d	transformation direction

Implements QgsAbstractGeometryV2.

Definition at line 508 of file qgscurvepolygonv2.cpp.

void QgsCurvePolygonV2::transform ( const QTransform & t )

overridevirtual

Transforms the geometry using a QTransform object.

Parameters

t	QTransform transformation

Implements QgsAbstractGeometryV2.

Definition at line 522 of file qgscurvepolygonv2.cpp.

double QgsCurvePolygonV2::vertexAngle ( const QgsVertexId & vertex ) const

overridevirtual

Returns approximate rotation angle for a vertex.

Usually average angle between adjacent segments.

Parameters

vertex the vertex id

Returns: rotation in radians, clockwise from north

Implements QgsAbstractGeometryV2.

Definition at line 716 of file qgscurvepolygonv2.cpp.

QgsPointV2 QgsCurvePolygonV2::vertexAt ( const QgsVertexId & id ) const

overridevirtual

Returns the point corresponding to a specified vertex id.

Implements QgsAbstractGeometryV2.

Definition at line 733 of file qgscurvepolygonv2.cpp.

int QgsCurvePolygonV2::vertexCount	(	int	= `0`,
		int	ring = `0`
	)		const

overridevirtual

Implements QgsAbstractGeometryV2.

Definition at line 728 of file qgscurvepolygonv2.cpp.

int QgsCurvePolygonV2::wkbSize ( ) const

overridevirtual

Returns the size of the WKB representation of the geometry.

See also: asWkb

Implements QgsAbstractGeometryV2.

Reimplemented in QgsPolygonV2.

Definition at line 212 of file qgscurvepolygonv2.cpp.

Member Data Documentation

QgsCurveV2* QgsCurvePolygonV2::mExteriorRing

protected

Definition at line 111 of file qgscurvepolygonv2.h.

QList<QgsCurveV2*> QgsCurvePolygonV2::mInteriorRings

protected

Definition at line 112 of file qgscurvepolygonv2.h.

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

/tmp/buildd/qgis-2.12.0+99unstable/src/core/geometry/qgscurvepolygonv2.h
/tmp/buildd/qgis-2.12.0+99unstable/src/core/geometry/qgscurvepolygonv2.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation