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QGIS API Documentation
2.14.0-Essen
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Polygon geometry type. More...
#include <qgspolygonv2.h>
Public Member Functions | |
| QgsPolygonV2 () | |
| void | addInteriorRing (QgsCurveV2 *ring) override |
| Adds an interior ring to the geometry (takes ownership) More... | |
| unsigned char * | asWkb (int &binarySize) const override |
| Returns a WKB representation of the geometry. More... | |
| virtual QgsPolygonV2 * | clone () const override |
| Clones the geometry by performing a deep copy. More... | |
| virtual bool | fromWkb (QgsConstWkbPtr wkb) override |
| Sets the geometry from a WKB string. More... | |
| virtual QString | geometryType () const override |
| Returns a unique string representing the geometry type. More... | |
| bool | operator!= (const QgsPolygonV2 &other) const |
| bool | operator== (const QgsPolygonV2 &other) const |
| virtual void | setExteriorRing (QgsCurveV2 *ring) override |
| Sets the exterior ring of the polygon. More... | |
| QgsPolygonV2 * | surfaceToPolygon () const override |
| int | wkbSize () const override |
| Returns the size of the WKB representation of the geometry. More... | |
 Public Member Functions inherited from QgsCurvePolygonV2 | |
| QgsCurvePolygonV2 () | |
| QgsCurvePolygonV2 (const QgsCurvePolygonV2 &p) | |
| ~QgsCurvePolygonV2 () | |
| virtual bool | addMValue (double mValue=0) override |
| Adds a measure to the geometry, initialized to a preset value. More... | |
| virtual bool | addZValue (double zValue=0) override |
| Adds a z-dimension to the geometry, initialized to a preset value. More... | |
| virtual double | area () const override |
| Returns the area of the geometry. More... | |
| QDomElement | asGML2 (QDomDocument &doc, int precision=17, const QString &ns="gml") const override |
| Returns a GML2 representation of the geometry. More... | |
| QDomElement | asGML3 (QDomDocument &doc, int precision=17, const QString &ns="gml") const override |
| Returns a GML3 representation of the geometry. More... | |
| QString | asJSON (int precision=17) const override |
| Returns a GeoJSON representation of the geometry. More... | |
| QString | asWkt (int precision=17) const override |
| Returns a WKT representation of the geometry. More... | |
| void | clear () override |
| Clears the geometry, ie reset it to a null geometry. More... | |
| double | closestSegment (const QgsPointV2 &pt, QgsPointV2 &segmentPt, QgsVertexId &vertexAfter, bool *leftOf, double epsilon) const override |
| Searches for the closest segment of the geometry to a given point. More... | |
| virtual QgsCoordinateSequenceV2 | coordinateSequence () const override |
| Retrieves the sequence of geometries, rings and nodes. More... | |
| virtual bool | deleteVertex (QgsVertexId position) override |
| Deletes a vertex within the geometry. More... | |
| virtual int | dimension () const override |
| Returns the inherent dimension of the geometry. More... | |
| virtual void | draw (QPainter &p) const override |
| Draws the geometry using the specified QPainter. More... | |
| virtual bool | dropMValue () override |
| Drops any measure values which exist in the geometry. More... | |
| virtual bool | dropZValue () override |
| Drops any z-dimensions which exist in the geometry. More... | |
| const QgsCurveV2 * | exteriorRing () const |
| virtual bool | fromWkt (const QString &wkt) override |
| Sets the geometry from a WKT string. More... | |
| bool | hasCurvedSegments () const override |
| Returns true if the geometry contains curved segments. More... | |
| virtual bool | insertVertex (QgsVertexId position, const QgsPointV2 &vertex) override |
| Inserts a vertex into the geometry. More... | |
| const QgsCurveV2 * | interiorRing (int i) const |
| virtual bool | moveVertex (QgsVertexId position, const QgsPointV2 &newPos) override |
| Moves a vertex within the geometry. More... | |
| bool | nextVertex (QgsVertexId &id, QgsPointV2 &vertex) const override |
| Returns next vertex id and coordinates. More... | |
| int | numInteriorRings () const |
| QgsCurvePolygonV2 & | operator= (const QgsCurvePolygonV2 &p) |
| virtual int | partCount () const override |
| Returns count of parts contained in the geometry. More... | |
| virtual double | perimeter () const override |
| Returns the perimeter of the geometry. More... | |
| bool | removeInteriorRing (int nr) |
| Removes ring. More... | |
| virtual int | ringCount (int=0) const override |
| QgsAbstractGeometryV2 * | segmentize () const override |
| Returns a version of the geometry without curves. More... | |
| void | setInteriorRings (const QList< QgsCurveV2 * > &rings) |
| Sets all interior rings (takes ownership) More... | |
| virtual QgsPolygonV2 * | toPolygon () const |
| void | transform (const QgsCoordinateTransform &ct, QgsCoordinateTransform::TransformDirection d=QgsCoordinateTransform::ForwardTransform) override |
| Transforms the geometry using a coordinate transform. More... | |
| void | transform (const QTransform &t) override |
| Transforms the geometry using a QTransform object. More... | |
| double | vertexAngle (QgsVertexId vertex) const override |
| Returns approximate rotation angle for a vertex. More... | |
| virtual QgsPointV2 | vertexAt (QgsVertexId id) const override |
| Returns the point corresponding to a specified vertex id. More... | |
| virtual int | vertexCount (int=0, int ring=0) const override |
| Public Member Functions inherited from QgsSurfaceV2 | |
| virtual QgsRectangle | boundingBox () const override |
| Returns the minimal bounding box for the geometry. More... | |
| Public Member Functions inherited from QgsAbstractGeometryV2 | |
| QgsAbstractGeometryV2 () | |
| QgsAbstractGeometryV2 (const QgsAbstractGeometryV2 &geom) | |
| virtual | ~QgsAbstractGeometryV2 () |
| virtual QgsPointV2 | centroid () const |
| Returns the centroid of the geometry. More... | |
| virtual bool | convertTo (QgsWKBTypes::Type type) |
| Converts the geometry to a specified type. More... | |
| bool | is3D () const |
| Returns true if the geometry is 3D and contains a z-value. More... | |
| bool | isEmpty () const |
| Returns true if the geometry is empty. More... | |
| bool | isMeasure () const |
| Returns true if the geometry contains m values. More... | |
| virtual double | length () const |
| Returns the length of the geometry. More... | |
| int | nCoordinates () const |
| Returns the number of nodes contained in the geometry. More... | |
| virtual QgsAbstractGeometryV2 & | operator= (const QgsAbstractGeometryV2 &geom) |
| QgsWKBTypes::Type | wkbType () const |
| Returns the WKB type of the geometry. More... | |
| QString | wktTypeStr () const |
| Returns the WKT type string of the geometry. More... | |
Additional Inherited Members | |
| Protected Member Functions inherited from QgsCurvePolygonV2 | |
| virtual QgsRectangle | calculateBoundingBox () const override |
| Default calculator for the minimal bounding box for the geometry. More... | |
| Protected Member Functions inherited from QgsSurfaceV2 | |
| virtual void | clearCache () const override |
| Clears any cached parameters associated with the geometry, eg bounding boxes. More... | |
| Protected Member Functions inherited from QgsAbstractGeometryV2 | |
| void | setZMTypeFromSubGeometry (const QgsAbstractGeometryV2 *subggeom, QgsWKBTypes::Type baseGeomType) |
| Updates the geometry type based on whether sub geometries contain z or m values. More... | |
| Protected Attributes inherited from QgsCurvePolygonV2 | |
| QgsCurveV2 * | mExteriorRing |
| QList< QgsCurveV2 * > | mInteriorRings |
| Protected Attributes inherited from QgsSurfaceV2 | |
| QgsRectangle | mBoundingBox |
| QgsCoordinateSequenceV2 | mCoordinateSequence |
| Protected Attributes inherited from QgsAbstractGeometryV2 | |
| QgsWKBTypes::Type | mWkbType |
Polygon geometry type.
Definition at line 29 of file qgspolygonv2.h.
| QgsPolygonV2::QgsPolygonV2 | ( | ) |
Definition at line 24 of file qgspolygonv2.cpp.
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overridevirtual |
Adds an interior ring to the geometry (takes ownership)
Reimplemented from QgsCurvePolygonV2.
Definition at line 172 of file qgspolygonv2.cpp.
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overridevirtual |
Returns a WKB representation of the geometry.
| binarySize | will be set to the size of the returned WKB string |
Reimplemented from QgsCurvePolygonV2.
Definition at line 148 of file qgspolygonv2.cpp.
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overridevirtual |
Clones the geometry by performing a deep copy.
Reimplemented from QgsCurvePolygonV2.
Definition at line 68 of file qgspolygonv2.cpp.
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overridevirtual |
Sets the geometry from a WKB string.
Reimplemented from QgsCurvePolygonV2.
Definition at line 73 of file qgspolygonv2.cpp.
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inlineoverridevirtual |
Returns a unique string representing the geometry type.
Reimplemented from QgsCurvePolygonV2.
Definition at line 37 of file qgspolygonv2.h.
| bool QgsPolygonV2::operator!= | ( | const QgsPolygonV2 & | other | ) | const |
Definition at line 63 of file qgspolygonv2.cpp.
| bool QgsPolygonV2::operator== | ( | const QgsPolygonV2 & | other | ) | const |
Definition at line 30 of file qgspolygonv2.cpp.
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overridevirtual |
Sets the exterior ring of the polygon.
The CurvePolygon type will be updated to match the dimensionality of the exterior ring. For instance, setting a 2D exterior ring on a 3D CurvePolygon will drop the z dimension from the CurvePolygon and all interior rings.
| ring | new exterior ring. Ownership is transferred to the CurvePolygon. |
Reimplemented from QgsCurvePolygonV2.
Definition at line 203 of file qgspolygonv2.cpp.
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overridevirtual |
Reimplemented from QgsCurvePolygonV2.
Definition at line 239 of file qgspolygonv2.cpp.
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overridevirtual |
Returns the size of the WKB representation of the geometry.
Reimplemented from QgsCurvePolygonV2.
Definition at line 132 of file qgspolygonv2.cpp.
1.8.11
