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class QgsCurvePolygonV2: public QgsSurfaceV2
{
%TypeHeaderCode
#include <qgscurvepolygonv2.h>
%End
public:
QgsCurvePolygonV2();
QgsCurvePolygonV2( const QgsCurvePolygonV2& p );
//QgsCurvePolygonV2& operator=( const QgsCurvePolygonV2& p );
~QgsCurvePolygonV2();
virtual QString geometryType() const;
virtual int dimension() const;
virtual QgsCurvePolygonV2* clone() const /Factory/;
void clear();
virtual bool fromWkb( QgsConstWkbPtr wkb );
virtual bool fromWkt( const QString& wkt );
int wkbSize() const;
unsigned char* asWkb( int& binarySize ) const;
QString asWkt( int precision = 17 ) const;
QDomElement asGML2( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const;
QDomElement asGML3( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const;
QString asJSON( int precision = 17 ) const;
//surface interface
virtual double area() const;
virtual double perimeter() const;
QgsPolygonV2* surfaceToPolygon() const /Factory/;
virtual QgsAbstractGeometryV2* boundary() const /Factory/;
//curve polygon interface
int numInteriorRings() const;
const QgsCurveV2* exteriorRing() const;
const QgsCurveV2* interiorRing( int i ) const;
/** Returns a new polygon geometry corresponding to a segmentized approximation
* of the curve.
* @param tolerance segmentation tolerance
* @param toleranceType maximum segmentation angle or maximum difference between approximation and curve*/
virtual QgsPolygonV2* toPolygon( double tolerance = M_PI_2 / 90, SegmentationToleranceType toleranceType = MaximumAngle ) const;
/** Sets the exterior ring of the polygon. The CurvePolygon type will be updated to match the dimensionality
* of the exterior ring. For instance, setting a 2D exterior ring on a 3D CurvePolygon will drop the z dimension
* from the CurvePolygon and all interior rings.
* @param ring new exterior ring. Ownership is transferred to the CurvePolygon.
* @see setInteriorRings()
* @see exteriorRing()
*/
virtual void setExteriorRing( QgsCurveV2* ring /Transfer/ );
/** Sets all interior rings (takes ownership)*/
void setInteriorRings( const QList<QgsCurveV2*>& rings );
/** Adds an interior ring to the geometry (takes ownership)*/
virtual void addInteriorRing( QgsCurveV2* ring /Transfer/ );
/** Removes ring. Exterior ring is 0, first interior ring 1, ...*/
bool removeInteriorRing( int nr );
virtual void draw( QPainter& p ) const;
void transform( const QgsCoordinateTransform& ct, QgsCoordinateTransform::TransformDirection d = QgsCoordinateTransform::ForwardTransform,
bool transformZ = false );
void transform( const QTransform& t );
virtual bool insertVertex( QgsVertexId position, const QgsPointV2& vertex );
virtual bool moveVertex( QgsVertexId position, const QgsPointV2& newPos );
virtual bool deleteVertex( QgsVertexId position );
virtual QList< QList< QList< QgsPointV2 > > > coordinateSequence() const;
virtual int nCoordinates() const;
double closestSegment( const QgsPointV2& pt, QgsPointV2& segmentPt, QgsVertexId& vertexAfter, bool* leftOf, double epsilon ) const;
bool nextVertex( QgsVertexId& id, QgsPointV2& vertex /Out/ ) const;
bool hasCurvedSegments() const;
/** Returns a geometry without curves. Caller takes ownership
* @param tolerance segmentation tolerance
* @param toleranceType maximum segmentation angle or maximum difference between approximation and curve*/
QgsAbstractGeometryV2* segmentize( double tolerance = M_PI_2 / 90, SegmentationToleranceType toleranceType = MaximumAngle ) const /Factory/;
/** Returns approximate rotation angle for a vertex. Usually average angle between adjacent segments.
* @param vertex the vertex id
* @return rotation in radians, clockwise from north
*/
double vertexAngle( QgsVertexId vertex ) const;
virtual int vertexCount( int /*part*/ = 0, int ring = 0 ) const;
virtual int ringCount( int /*part*/ = 0 ) const;
virtual int partCount() const;
virtual QgsPointV2 vertexAt( const QgsVertexId& id ) const;
virtual bool addZValue( double zValue = 0 );
virtual bool addMValue( double mValue = 0 );
virtual bool dropZValue();
virtual bool dropMValue();
protected:
virtual QgsRectangle calculateBoundingBox() const;
};
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