QGIS API Documentation
2.10.1-Pisa
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Polygon geometry type. More...
#include <qgspolygonv2.h>
Public Member Functions | |
unsigned char * | asWkb (int &binarySize) const override |
Returns a WKB representation of the geometry. More... | |
virtual QgsAbstractGeometryV2 * | clone () const override |
Clones the geometry by performing a deep copy. More... | |
virtual bool | fromWkb (const unsigned char *wkb) override |
Sets the geometry from a WKB string. More... | |
virtual QString | geometryType () const override |
Returns a unique string representing the geometry type. 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 () | |
void | addInteriorRing (QgsCurveV2 *ring) |
Adds an interior ring to the geometry (takes ownership) 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... | |
virtual QgsRectangle | calculateBoundingBox () const override |
Calculates the minimal bounding box for the geometry. More... | |
QgsPointV2 | centroid () const override |
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 void | coordinateSequence (QList< QList< QList< QgsPointV2 > > > &coord) const override |
Retrieves the sequence of geometries, rings and nodes. More... | |
virtual bool | deleteVertex (const 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... | |
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 (const QgsVertexId &position, const QgsPointV2 &vertex) override |
Inserts a vertex into the geometry. More... | |
const QgsCurveV2 * | interiorRing (int i) const |
virtual double | length () const override |
Returns the length (or perimeter for area geometries) of the geometry. More... | |
virtual bool | moveVertex (const 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) |
QgsPointV2 | pointOnSurface () const override |
bool | removeInteriorRing (int nr) |
Removes ring. More... | |
QgsAbstractGeometryV2 * | segmentize () const override |
Returns a version of the geometry without curves. More... | |
void | setExteriorRing (QgsCurveV2 *ring) |
Sets exterior ring (takes ownership) More... | |
void | setInteriorRings (QList< QgsCurveV2 * > rings) |
Sets all interior rings (takes ownership) More... | |
virtual QgsPolygonV2 * | toPolygon () const |
void | transform (const QgsCoordinateTransform &ct) override |
Transforms the geometry using a coordinate transform. More... | |
void | transform (const QTransform &t) override |
Transforms the geometry using a QTransform object. More... | |
Public Member Functions inherited from QgsAbstractGeometryV2 | |
QgsAbstractGeometryV2 () | |
QgsAbstractGeometryV2 (const QgsAbstractGeometryV2 &geom) | |
virtual | ~QgsAbstractGeometryV2 () |
QgsRectangle | boundingBox () const |
Returns the minimal bounding box for the geometry. 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... | |
int | nCoordinates () const |
Returns the number of nodes contained in the geometry. More... | |
virtual QgsAbstractGeometryV2 & | operator= (const QgsAbstractGeometryV2 &geom) |
QgsPointV2 | vertexAt (const QgsVertexId &id) const |
Returns the point corresponding to a specified vertex id. More... | |
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 QgsAbstractGeometryV2 | |
void | setZMTypeFromSubGeometry (const QgsAbstractGeometryV2 *subggeom, QgsWKBTypes::Type baseGeomType) |
Updates the geometry type based on whether sub geometries contain z or m values. More... | |
Static Protected Member Functions inherited from QgsAbstractGeometryV2 | |
static bool | readWkbHeader (QgsConstWkbPtr &wkbPtr, QgsWKBTypes::Type &wkbType, bool &endianSwap, QgsWKBTypes::Type expectedType) |
Reads a WKB header and tests its validity. More... | |
Protected Attributes inherited from QgsCurvePolygonV2 | |
QgsCurveV2 * | mExteriorRing |
QList< QgsCurveV2 * > | mInteriorRings |
Protected Attributes inherited from QgsAbstractGeometryV2 | |
QgsRectangle | mBoundingBox |
QgsWKBTypes::Type | mWkbType |
Polygon geometry type.
Definition at line 29 of file qgspolygonv2.h.
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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 85 of file qgspolygonv2.cpp.
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overridevirtual |
Clones the geometry by performing a deep copy.
Reimplemented from QgsCurvePolygonV2.
Definition at line 24 of file qgspolygonv2.cpp.
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overridevirtual |
Sets the geometry from a WKB string.
Reimplemented from QgsCurvePolygonV2.
Definition at line 29 of file qgspolygonv2.cpp.
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inlineoverridevirtual |
Returns a unique string representing the geometry type.
Reimplemented from QgsCurvePolygonV2.
Definition at line 32 of file qgspolygonv2.h.
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overridevirtual |
Reimplemented from QgsCurvePolygonV2.
Definition at line 108 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 69 of file qgspolygonv2.cpp.