16 #ifndef QGSGEOMETRYCOLLECTIONV2_H
17 #define QGSGEOMETRYCOLLECTIONV2_H
41 int numGeometries()
const;
56 virtual void clear()
override;
71 virtual bool removeGeometry(
int nr );
84 bool fromWkb(
const unsigned char * wkb )
override;
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;
118 virtual int vertexCount(
int part = 0,
int ring = 0 )
const override {
return mGeometries[part]->vertexCount( 0, ring ); }
119 virtual int ringCount(
int part = 0 )
const override {
return mGeometries[part]->ringCount(); }
120 virtual int partCount()
const override {
return mGeometries.size(); }
123 virtual bool addZValue(
double zValue = 0 )
override;
124 virtual bool addMValue(
double mValue = 0 )
override;
140 #endif // QGSGEOMETRYCOLLECTIONV2_H
virtual QgsPointV2 vertexAt(const QgsVertexId &id) const override
Returns the point corresponding to a specified vertex id.
A rectangle specified with double values.
virtual double vertexAngle(const QgsVertexId &vertex) const =0
Returns approximate rotation angle for a vertex.
virtual QgsAbstractGeometryV2 & operator=(const QgsAbstractGeometryV2 &geom)
virtual bool moveVertex(const QgsVertexId &position, const QgsPointV2 &newPos)=0
Moves a vertex within the geometry.
virtual double length() const
Returns the length of the geometry.
virtual QgsPointV2 vertexAt(const QgsVertexId &) const override
Returns the point corresponding to a specified vertex id.
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.
TransformDirection
Enum used to indicate the direction (forward or inverse) of the transform.
virtual int wkbSize() const =0
Returns the size of the WKB representation of the geometry.
virtual bool insertVertex(const QgsVertexId &position, const QgsPointV2 &vertex)=0
Inserts a vertex into 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
Calculates the minimal bounding box for the geometry.
virtual bool fromWkb(const unsigned char *wkb)=0
Sets the geometry from a WKB string.
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
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 QgsAbstractGeometryV2 * segmentize() const
Returns a version of the geometry without curves.
QVector< QgsAbstractGeometryV2 * > mGeometries
virtual bool deleteVertex(const QgsVertexId &position)=0
Deletes a vertex within 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 void coordinateSequence(QList< QList< QList< QgsPointV2 > > > &coord) const =0
Retrieves the sequence of geometries, rings and nodes.
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 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 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 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.