18 #ifndef QGSCOMPOUNDCURVEV2_H
19 #define QGSCOMPOUNDCURVEV2_H
38 virtual int dimension()
const override {
return 1; }
40 virtual void clear()
override;
44 virtual bool fromWkb(
const unsigned char* wkb )
override;
48 unsigned char*
asWkb(
int& binarySize )
const override;
55 virtual double length()
const override;
64 int nCurves()
const {
return mCurves.size(); }
77 void removeCurve(
int i );
96 void sumUpArea(
double& sum )
const override;
110 #endif // QGSCOMPOUNDCURVEV2_H
A rectangle specified with double values.
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 (or perimeter for area geometries) of the geometry.
virtual void points(QList< QgsPointV2 > &pt) const =0
Returns a list of points within the curve.
virtual QString asJSON(int precision=17) const =0
Returns a GeoJSON representation of the geometry.
virtual void addToPainterPath(QPainterPath &path) const =0
Adds a curve to a painter path.
Abstract base class for all geometries.
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 void clear()=0
Clears the geometry, ie reset it to a null geometry.
virtual int numPoints() const =0
Returns the number of points in the curve.
virtual bool pointAt(int i, QgsPointV2 &vertex, QgsVertexId::VertexType &type) const =0
Returns the point and vertex id of a point within the curve.
Utility class for identifying a unique vertex within a geometry.
Line string geometry type.
virtual QgsRectangle calculateBoundingBox() const
Calculates the minimal bounding box for the geometry.
virtual QString geometryType() const override
Returns a unique string representing the geometry type.
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 QDomElement asGML3(QDomDocument &doc, int precision=17, const QString &ns="gml") const =0
Returns a GML3 representation of the geometry.
virtual bool fromWkt(const QString &wkt)=0
Sets the geometry from a WKT string.
Compound curve geometry type.
virtual void sumUpArea(double &sum) const =0
Calculates the area of the curve.
virtual bool deleteVertex(const QgsVertexId &position)=0
Deletes a vertex within the geometry.
virtual QgsLineStringV2 * curveToLine() const =0
Returns a new line string geometry corresponding to a segmentized approximation of the curve...
virtual QgsPointV2 endPoint() const =0
Returns the end point of the curve.
virtual void transform(const QgsCoordinateTransform &ct)=0
Transforms the geometry using a coordinate transform.
virtual QString asWkt(int precision=17) const =0
Returns a WKT representation of the geometry.
virtual QgsPointV2 startPoint() const =0
Returns the starting point of the curve.
virtual void draw(QPainter &p) const =0
Draws the geometry using the specified QPainter.
virtual void drawAsPolygon(QPainter &p) const =0
Draws the curve as a polygon on 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 int dimension() const override
Returns the inherent dimension of the geometry.
virtual QgsAbstractGeometryV2 * clone() const =0
Clones the geometry by performing a deep copy.
Abstract base class for curved geometry type.
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.
int nCurves() const
Returns the number of curves in the geometry.