Compound curve geometry type. More...

#include <qgscompoundcurvev2.h>

Inheritance diagram for QgsCompoundCurveV2:

Public Member Functions
	QgsCompoundCurveV2 ()

	QgsCompoundCurveV2 (const QgsCompoundCurveV2 &curve)

	~QgsCompoundCurveV2 ()

void	addCurve (QgsCurveV2 *c)
	Adds a curve to the geometr (takes ownership) More...

void	addToPainterPath (QPainterPath &path) const override
	Adds a curve to a painter path. More...

void	addVertex (const QgsPointV2 &pt)
	Adds a vertex to the end 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...

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

virtual QgsAbstractGeometryV2 *	clone () const override
	Clones the geometry by performing a deep copy. More...

void	close ()
	Appends first point if not already closed. 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...

const QgsCurveV2 *	curveAt (int i) const
	Returns the curve at the specified index. More...

virtual QgsLineStringV2 *	curveToLine () const override
	Returns a new line string geometry corresponding to a segmentized approximation of the curve. 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...

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

void	drawAsPolygon (QPainter &p) const override
	Draws the curve as a polygon on the specified QPainter. More...

virtual QgsPointV2	endPoint () const override
	Returns the end point of the curve. More...

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...

virtual double	length () const override
	Returns the length (or perimeter for area geometries) of the geometry. More...

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

int	nCurves () const
	Returns the number of curves in the geometry. More...

virtual int	numPoints () const override
	Returns the number of points in the curve. More...

QgsCompoundCurveV2 &	operator= (const QgsCompoundCurveV2 &curve)

bool	pointAt (int i, QgsPointV2 &vertex, QgsVertexId::VertexType &type) const override
	Returns the point and vertex id of a point within the curve. More...

virtual void	points (QList< QgsPointV2 > &pts) const override
	Returns a list of points within the curve. More...

void	removeCurve (int i)
	Removes a curve from the geometry. More...

virtual QgsPointV2	startPoint () const override
	Returns the starting point of the curve. More...

void	sumUpArea (double &sum) const override
	Calculates the area of the curve. More...

void	transform (const QgsCoordinateTransform &ct) override
	Transforms the geometry using a coordinate transform. More...

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

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

Public Member Functions inherited from QgsCurveV2
	QgsCurveV2 ()

virtual	~QgsCurveV2 ()

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

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

virtual bool	isClosed () const
	Returns true if the curve is closed. More...

virtual bool	isRing () const
	Returns true if the curve is a ring. More...

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

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

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...

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

virtual QgsAbstractGeometryV2 &	operator= (const QgsAbstractGeometryV2 &geom)

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

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

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

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...

Protected Attributes inherited from QgsAbstractGeometryV2
QgsRectangle	mBoundingBox

QgsWKBTypes::Type	mWkbType

Detailed Description

Compound curve geometry type.

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

Definition at line 29 of file qgscompoundcurvev2.h.

Constructor & Destructor Documentation

QgsCompoundCurveV2::QgsCompoundCurveV2 ( )

Definition at line 28 of file qgscompoundcurvev2.cpp.

QgsCompoundCurveV2::QgsCompoundCurveV2 ( const QgsCompoundCurveV2 & curve )

Definition at line 38 of file qgscompoundcurvev2.cpp.

QgsCompoundCurveV2::~QgsCompoundCurveV2 ( )

Definition at line 33 of file qgscompoundcurvev2.cpp.

Member Function Documentation

void QgsCompoundCurveV2::addCurve ( QgsCurveV2 * c )

Adds a curve to the geometr (takes ownership)

Definition at line 348 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::addToPainterPath ( QPainterPath & path ) const

overridevirtual

Adds a curve to a painter path.

Implements QgsCurveV2.

Definition at line 431 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::addVertex ( const QgsPointV2 & pt )

Adds a vertex to the end of the geometry.

Definition at line 372 of file qgscompoundcurvev2.cpp.

QDomElement QgsCompoundCurveV2::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 217 of file qgscompoundcurvev2.cpp.

QDomElement QgsCompoundCurveV2::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 226 of file qgscompoundcurvev2.cpp.

QString QgsCompoundCurveV2::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 257 of file qgscompoundcurvev2.cpp.

unsigned char * QgsCompoundCurveV2::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.

Definition at line 177 of file qgscompoundcurvev2.cpp.

QString QgsCompoundCurveV2::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 196 of file qgscompoundcurvev2.cpp.

QgsRectangle QgsCompoundCurveV2::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 71 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::clear ( )

overridevirtual

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

Implements QgsAbstractGeometryV2.

Definition at line 64 of file qgscompoundcurvev2.cpp.

QgsAbstractGeometryV2 * QgsCompoundCurveV2::clone ( ) const

overridevirtual

Clones the geometry by performing a deep copy.

Implements QgsAbstractGeometryV2.

Definition at line 59 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::close ( )

Appends first point if not already closed.

Definition at line 545 of file qgscompoundcurvev2.cpp.

double QgsCompoundCurveV2::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 516 of file qgscompoundcurvev2.cpp.

const QgsCurveV2 * QgsCompoundCurveV2::curveAt ( int i ) const

Returns the curve at the specified index.

Definition at line 339 of file qgscompoundcurvev2.cpp.

QgsLineStringV2 * QgsCompoundCurveV2::curveToLine ( ) const

overridevirtual

Returns a new line string geometry corresponding to a segmentized approximation of the curve.

Implements QgsCurveV2.

Definition at line 325 of file qgscompoundcurvev2.cpp.

bool QgsCompoundCurveV2::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 480 of file qgscompoundcurvev2.cpp.

virtual int QgsCompoundCurveV2::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 38 of file qgscompoundcurvev2.h.

void QgsCompoundCurveV2::draw ( QPainter & p ) const

overridevirtual

Draws the geometry using the specified QPainter.

Parameters

p	destination QPainter

Implements QgsAbstractGeometryV2.

Definition at line 404 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::drawAsPolygon ( QPainter & p ) const

overridevirtual

Draws the curve as a polygon on the specified QPainter.

Parameters

p	destination QPainter

Implements QgsCurveV2.

Definition at line 442 of file qgscompoundcurvev2.cpp.

QgsPointV2 QgsCompoundCurveV2::endPoint ( ) const

overridevirtual

Returns the end point of the curve.

See Also: startPoint

Implements QgsCurveV2.

Definition at line 286 of file qgscompoundcurvev2.cpp.

bool QgsCompoundCurveV2::fromWkb ( const unsigned char * wkb )

overridevirtual

Sets the geometry from a WKB string.

See Also: fromWkt

Implements QgsAbstractGeometryV2.

Definition at line 87 of file qgscompoundcurvev2.cpp.

bool QgsCompoundCurveV2::fromWkt ( const QString & wkt )

overridevirtual

Sets the geometry from a WKT string.

See Also: fromWkb

Implements QgsAbstractGeometryV2.

Definition at line 133 of file qgscompoundcurvev2.cpp.

virtual QString QgsCompoundCurveV2::geometryType ( ) const

inlineoverridevirtual

Returns a unique string representing the geometry type.

See Also: wkbType; wktTypeStr

Implements QgsAbstractGeometryV2.

Definition at line 37 of file qgscompoundcurvev2.h.

bool QgsCompoundCurveV2::hasCurvedSegments ( ) const

overridevirtual

Returns true if the geometry contains curved segments.

Reimplemented from QgsAbstractGeometryV2.

Definition at line 554 of file qgscompoundcurvev2.cpp.

bool QgsCompoundCurveV2::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 453 of file qgscompoundcurvev2.cpp.

double QgsCompoundCurveV2::length ( ) const

overridevirtual

Returns the length (or perimeter for area geometries) of the geometry.

See Also: area

Reimplemented from QgsAbstractGeometryV2.

Definition at line 266 of file qgscompoundcurvev2.cpp.

bool QgsCompoundCurveV2::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 468 of file qgscompoundcurvev2.cpp.

int QgsCompoundCurveV2::nCurves ( ) const

inline

Returns the number of curves in the geometry.

Definition at line 64 of file qgscompoundcurvev2.h.

int QgsCompoundCurveV2::numPoints ( ) const

overridevirtual

Returns the number of points in the curve.

Implements QgsCurveV2.

Definition at line 313 of file qgscompoundcurvev2.cpp.

QgsCompoundCurveV2 & QgsCompoundCurveV2::operator= ( const QgsCompoundCurveV2 & curve )

Definition at line 46 of file qgscompoundcurvev2.cpp.

bool QgsCompoundCurveV2::pointAt	(	int	i,
		QgsPointV2 &	vertex,
		QgsVertexId::VertexType &	type
	)		const

overridevirtual

Returns the point and vertex id of a point within the curve.

Implements QgsCurveV2.

Definition at line 521 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::points ( QList< QgsPointV2 > & pt ) const

overridevirtual

Returns a list of points within the curve.

Implements QgsCurveV2.

Definition at line 295 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::removeCurve ( int i )

Removes a curve from the geometry.

Parameters

i	index of curve to remove

Definition at line 361 of file qgscompoundcurvev2.cpp.

QgsPointV2 QgsCompoundCurveV2::startPoint ( ) const

overridevirtual

Returns the starting point of the curve.

See Also: endPoint

Implements QgsCurveV2.

Definition at line 277 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::sumUpArea ( double & sum ) const

overridevirtual

Calculates the area of the curve.

Derived classes should override this to return the correct area of the curve.

Implements QgsCurveV2.

Definition at line 536 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::transform ( const QgsCoordinateTransform & ct )

overridevirtual

Transforms the geometry using a coordinate transform.

Parameters

ct	coordinate transform

Implements QgsAbstractGeometryV2.

Definition at line 413 of file qgscompoundcurvev2.cpp.

void QgsCompoundCurveV2::transform ( const QTransform & t )

overridevirtual

Transforms the geometry using a QTransform object.

Parameters

t	QTransform transformation

Implements QgsAbstractGeometryV2.

Definition at line 422 of file qgscompoundcurvev2.cpp.

int QgsCompoundCurveV2::wkbSize ( ) const

overridevirtual

Returns the size of the WKB representation of the geometry.

See Also: asWkb

Implements QgsAbstractGeometryV2.

Definition at line 167 of file qgscompoundcurvev2.cpp.

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

/tmp/buildd/qgis-2.10.1+git20150822+dd4475c+20trusty/src/core/geometry/qgscompoundcurvev2.h
/tmp/buildd/qgis-2.10.1+git20150822+dd4475c+20trusty/src/core/geometry/qgscompoundcurvev2.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation