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8c5f3f88a9
Split length from perimeter calculation in geometry API, as returning perimeter for length for polygons is misleading and results in incorrect length/perimeter calculations for mixed geometry collections. Enable length & perimeter unit tests against reference geometries. Now the length & perimeter values match those calculated by PostGIS.
86 lines
3.4 KiB
Plaintext
86 lines
3.4 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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int numGeometries() const;
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//const QgsAbstractGeometryV2* geometryN( int n ) const;
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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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virtual bool removeGeometry( int nr );
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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( const unsigned char * wkb );
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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 calculateBoundingBox() const;
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virtual void coordinateSequence( QList< QList< QList< QgsPointV2 > > >& coord /Out/ ) 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( const QgsVertexId& position, const QgsPointV2& vertex );
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virtual bool moveVertex( const QgsVertexId& position, const QgsPointV2& newPos );
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virtual bool deleteVertex( const 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 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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double vertexAngle( const 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( const 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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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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};
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