Subgroup: other

Class: QgsPolygon¶

class qgis.core.QgsPolygon¶

Bases: qgis._core.QgsCurvePolygon

Polygon geometry type.

New in version 2.10: Methods

`addInteriorRing`
`addMValue`
`addZValue`
`adjacentVertices`
`area`
`asGml2`
`asGml3`
`asJson`
`asWkb`
`asWkt`
`boundary`
`boundingBox`	Returns the minimal bounding box for the geometry
`calculateBoundingBox`
`centroid`	Returns the centroid of the geometry
`childCount`
`childGeometry`
`childPoint`
`clear`
`clearCache`
`clone`
`closestSegment`
`convertTo`	Converts the geometry to a specified type.
`coordinateSequence`
`createEmptyWithSameType`
`deleteVertex`
`dimension`
`draw`
`dropMValue`
`dropZValue`
`exteriorRing`
`fromWkb`
`fromWkt`
`geometryType`
`hasChildGeometries`
`hasCurvedSegments`
`insertVertex`
`interiorRing`
`is3D`	Returns true if the geometry is 3D and contains a z-value.
`isEmpty`
`isMeasure`	Returns true if the geometry contains m values.
`length`	Returns the length of the geometry.
`moveVertex`
`nCoordinates`
`nextVertex`
`numInteriorRings`
`partCount`
`perimeter`
`pointDistanceToBoundary`	Returns the distance from a point to the boundary of the polygon (either the exterior ring or any closer interior rings).
`removeDuplicateNodes`
`removeInteriorRing`	Removes an interior ring from the polygon.
`removeInteriorRings`	Removes the interior rings from the polygon.
`ringCount`
`segmentLength`
`segmentize`	Returns a geometry without curves.
`setExteriorRing`
`setInteriorRings`	Sets all interior rings (takes ownership)
`setZMTypeFromSubGeometry`
`snappedToGrid`
`surfaceToPolygon`
`toCurveType`	Returns the geometry converted to the more generic curve type `QgsCurvePolygon`
`toPolygon`	Returns a new polygon geometry corresponding to a segmentized approximation of the curve.
`transform`	transform(self, t: QTransform, zTranslate: float = 0, zScale: float = 1, mTranslate: float = 0, mScale: float = 1)
`vertexAngle`	Returns approximate rotation angle for a vertex.
`vertexAt`
`vertexCount`
`vertexNumberFromVertexId`
`vertices`	Returns Java-style iterator for traversal of vertices of the geometry
`wkbType`	Returns the WKB type of the geometry.
`wktTypeStr`	Returns the WKT type string of the geometry.

Attributes

`MaximumAngle`
`MaximumDifference`

addInteriorRing(self, ring: QgsCurve)¶

asWkb(self) → QByteArray¶

boundary(self) → QgsAbstractGeometry¶

calculateBoundingBox()¶

childCount()¶

childGeometry()¶

childPoint()¶

clear(self)¶

clearCache()¶

clone(self) → QgsPolygon¶

createEmptyWithSameType(self) → QgsPolygon¶

fromWkb(self, wkb: QgsConstWkbPtr) → bool¶

geometryType(self) → str¶

hasChildGeometries()¶

pointDistanceToBoundary(self, x: float, y: float) → float¶: Returns the distance from a point to the boundary of the polygon (either the exterior ring or any closer interior rings). The returned distance will be negative if the point lies outside the polygon.

New in version 3.0.

setExteriorRing(self, ring: QgsCurve)¶

setZMTypeFromSubGeometry()¶

surfaceToPolygon(self) → QgsPolygon¶

toCurveType(self) → QgsCurvePolygon¶

Returns the geometry converted to the more generic curve type QgsCurvePolygon

Returns:	the converted geometry. Caller takes ownership*