16 #ifndef QGSGEOMETRYCOLLECTIONV2_H 17 #define QGSGEOMETRYCOLLECTIONV2_H 41 int numGeometries()
const;
56 virtual void clear()
override;
71 virtual bool removeGeometry(
int nr );
87 unsigned char*
asWkb(
int& binarySize )
const override;
104 virtual double length()
const override;
105 virtual double area()
const override;
106 virtual double perimeter()
const override;
119 virtual int vertexCount(
int part = 0,
int ring = 0 )
const override {
return mGeometries[part]->vertexCount( 0, ring ); }
120 virtual int ringCount(
int part = 0 )
const override {
return mGeometries[part]->ringCount(); }
121 virtual int partCount()
const override {
return mGeometries.size(); }
124 virtual bool addZValue(
double zValue = 0 )
override;
125 virtual bool addMValue(
double mValue = 0 )
override;
150 #endif // QGSGEOMETRYCOLLECTIONV2_H
A rectangle specified with double values.
virtual bool dropMValue()=0
Drops any measure values which exist in the geometry.
virtual QgsCoordinateSequenceV2 coordinateSequence() const =0
Retrieves the sequence of geometries, rings and nodes.
virtual QgsAbstractGeometryV2 & operator=(const QgsAbstractGeometryV2 &geom)
virtual double length() const
Returns the length of the geometry.
virtual QString asJSON(int precision=17) const =0
Returns a GeoJSON representation of the geometry.
Abstract base class for all geometries.
virtual bool wktOmitChildType() const
Returns whether child type names are omitted from Wkt representations of the collection.
virtual bool dropZValue()=0
Drops any z-dimensions which exist in the geometry.
virtual int wkbSize() const =0
Returns the size of the WKB representation of the geometry.
virtual bool addMValue(double mValue=0)=0
Adds a measure to the geometry, initialized to a preset value.
virtual void clear()=0
Clears the geometry, ie reset it to a null geometry.
Utility class for identifying a unique vertex within a geometry.
virtual QgsRectangle calculateBoundingBox() const
Default calculator for the minimal bounding box for the geometry.
virtual bool fromWkb(QgsConstWkbPtr wkb)=0
Sets the geometry from a WKB string.
Point geometry type, with support for z-dimension and m-values.
virtual bool hasCurvedSegments() const
Returns true if the geometry contains curved segments.
virtual unsigned char * asWkb(int &binarySize) const =0
Returns a WKB representation of the geometry.
virtual void transform(const QgsCoordinateTransform &ct, QgsCoordinateTransform::TransformDirection d=QgsCoordinateTransform::ForwardTransform)=0
Transforms the geometry using a coordinate transform.
virtual bool addZValue(double zValue=0)=0
Adds a z-dimension to the geometry, initialized to a preset value.
virtual int partCount() const override
Returns count of parts contained in the geometry.
virtual QDomElement asGML3(QDomDocument &doc, int precision=17, const QString &ns="gml") const =0
Returns a GML3 representation of the geometry.
virtual bool nextVertex(QgsVertexId &id, QgsPointV2 &vertex) const =0
Returns next vertex id and coordinates.
virtual int ringCount(int part=0) const override
virtual bool fromWkt(const QString &wkt)=0
Sets the geometry from a WKT string.
virtual QgsRectangle boundingBox() const =0
Returns the minimal bounding box for the geometry.
virtual QgsAbstractGeometryV2 * segmentize() const
Returns a version of the geometry without curves.
QVector< QgsAbstractGeometryV2 * > mGeometries
virtual double vertexAngle(QgsVertexId vertex) const =0
Returns approximate angle at a vertex.
virtual void clearCache() const override
Clears any cached parameters associated with the geometry, eg bounding boxes.
virtual bool deleteVertex(QgsVertexId position)=0
Deletes a vertex within the geometry.
virtual bool insertVertex(QgsVertexId position, const QgsPointV2 &vertex)=0
Inserts a vertex into the geometry.
virtual int dimension() const =0
Returns the inherent dimension of the geometry.
virtual double area() const
Returns the area of the geometry.
virtual QString asWkt(int precision=17) const =0
Returns a WKT representation of the geometry.
virtual QString geometryType() const override
Returns a unique string representing the geometry type.
virtual int vertexCount(int part=0, int ring=0) const override
virtual void clearCache() const
Clears any cached parameters associated with the geometry, eg bounding boxes.
virtual void draw(QPainter &p) const =0
Draws the geometry using the specified QPainter.
double ANALYSIS_EXPORT leftOf(Point3D *thepoint, Point3D *p1, Point3D *p2)
Returns whether 'thepoint' is left or right of the line from 'p1' to 'p2'.
virtual QgsPointV2 vertexAt(QgsVertexId) const override
Returns the point corresponding to a specified vertex id.
virtual QDomElement asGML2(QDomDocument &doc, int precision=17, const QString &ns="gml") const =0
Returns a GML2 representation of the geometry.
virtual double perimeter() const
Returns the perimeter of the geometry.
virtual QgsAbstractGeometryV2 * clone() const =0
Clones the geometry by performing a deep copy.
virtual bool moveVertex(QgsVertexId position, const QgsPointV2 &newPos)=0
Moves a vertex within the geometry.
virtual double closestSegment(const QgsPointV2 &pt, QgsPointV2 &segmentPt, QgsVertexId &vertexAfter, bool *leftOf, double epsilon) const =0
Searches for the closest segment of the geometry to a given point.
virtual QgsPointV2 vertexAt(QgsVertexId id) const override
Returns the point corresponding to a specified vertex id.