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122 lines
4.7 KiB
Plaintext
122 lines
4.7 KiB
Plaintext
class QgsGeometryCollectionV2: public QgsAbstractGeometryV2
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{
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%TypeHeaderCode
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#include <qgsgeometrycollectionv2.h>
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%End
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public:
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QgsGeometryCollectionV2();
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QgsGeometryCollectionV2( const QgsGeometryCollectionV2& c );
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//QgsGeometryCollectionV2& operator=( const QgsGeometryCollectionV2& c );
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virtual ~QgsGeometryCollectionV2();
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virtual QgsGeometryCollectionV2* clone() const;
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/** Returns the number of geometries within the collection.
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*/
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int numGeometries() const;
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/** Returns a const reference to a geometry from within the collection.
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* @param n index of geometry to return
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*/
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//const QgsAbstractGeometryV2* geometryN( int n ) const;
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/** Returns a geometry from within the collection.
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* @param n index of geometry to return
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*/
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QgsAbstractGeometryV2* geometryN( int n );
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//methods inherited from QgsAbstractGeometry
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virtual int dimension() const;
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virtual QString geometryType() const;
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virtual void clear();
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/** Adds a geometry and takes ownership. Returns true in case of success.*/
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virtual bool addGeometry( QgsAbstractGeometryV2* g /Transfer/ );
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/** Inserts a geometry before a specified index and takes ownership. Returns true in case of success.
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* @param g geometry to insert. Ownership is transferred to the collection.
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* @param index position to insert geometry before
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*/
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virtual bool insertGeometry( QgsAbstractGeometryV2* g /Transfer/, int index );
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/** Removes a geometry from the collection.
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* @param nr index of geometry to remove
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* @returns true if removal was successful.
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*/
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virtual bool removeGeometry( int nr );
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/** Transforms the geometry using a coordinate transform
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* @param ct coordinate transform
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* @param d transformation direction
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*/
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virtual void transform( const QgsCoordinateTransform& ct, QgsCoordinateTransform::TransformDirection d = QgsCoordinateTransform::ForwardTransform );
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void transform( const QTransform& t );
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//virtual void clip( const QgsRectangle& rect );
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virtual void draw( QPainter& p ) const;
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bool fromWkb( QgsConstWkbPtr wkb );
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virtual bool fromWkt( const QString& wkt );
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int wkbSize() const;
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unsigned char* asWkb( int& binarySize ) const;
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QString asWkt( int precision = 17 ) const;
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QDomElement asGML2( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const;
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QDomElement asGML3( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const;
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QString asJSON( int precision = 17 ) const;
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virtual QgsRectangle boundingBox() const;
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virtual QList< QList< QList< QgsPointV2 > > > coordinateSequence() const;
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virtual double closestSegment( const QgsPointV2& pt, QgsPointV2& segmentPt, QgsVertexId& vertexAfter, bool* leftOf, double epsilon ) const;
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bool nextVertex( QgsVertexId& id, QgsPointV2& vertex ) const;
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//low-level editing
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virtual bool insertVertex( QgsVertexId position, const QgsPointV2& vertex );
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virtual bool moveVertex( QgsVertexId position, const QgsPointV2& newPos );
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virtual bool deleteVertex( QgsVertexId position );
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virtual double length() const;
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virtual double area() const;
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virtual double perimeter() const;
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bool hasCurvedSegments() const;
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/** Returns a geometry without curves. Caller takes ownership
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* @param tolerance segmentation tolerance
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* @param toleranceType maximum segmentation angle or maximum difference between approximation and curve*/
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QgsAbstractGeometryV2* segmentize( double tolerance = M_PI_2 / 90, SegmentationToleranceType toleranceType = MaximumAngle ) const;
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/** Returns approximate rotation angle for a vertex. Usually average angle between adjacent segments.
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* @param vertex the vertex id
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* @return rotation in radians, clockwise from north
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*/
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double vertexAngle( QgsVertexId vertex ) const;
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virtual int vertexCount( int part = 0, int ring = 0 ) const;
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virtual int ringCount( int part = 0 ) const;
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virtual int partCount() const;
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virtual QgsPointV2 vertexAt( QgsVertexId id ) const;
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virtual bool addZValue( double zValue = 0 );
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virtual bool addMValue( double mValue = 0 );
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virtual bool dropZValue();
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virtual bool dropMValue();
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protected:
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/** Returns whether child type names are omitted from Wkt representations of the collection
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* @note added in QGIS 2.12
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*/
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virtual bool wktOmitChildType() const;
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/** Reads a collection from a WKT string.
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*/
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bool fromCollectionWkt( const QString &wkt, const QList<QgsAbstractGeometryV2*>& subtypes, const QString& defaultChildWkbType = QString() );
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virtual QgsRectangle calculateBoundingBox() const;
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virtual void clearCache() const;
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};
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