Subgroup: other

Class: QgsSurface

class qgis.core.QgsSurface

Bases: qgis._core.QgsAbstractGeometry

QgsSurface(QgsSurface)

Methods

addMValue	Adds a measure to the geometry, initialized to a preset value.
addZValue	Adds a z-dimension to the geometry, initialized to a preset value.
adjacentVertices	Returns the vertices adjacent to a specified vertex within a geometry.
area	Returns the area of the geometry.
asGml2	Returns a GML2 representation of the geometry.
asGml3	Returns a GML3 representation of the geometry.
asJson	Returns a GeoJSON representation of the geometry.
asWkb	Returns a WKB representation of the geometry.
asWkt	Returns a WKT representation of the geometry.
boundary	Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the geometry).
boundingBox	Returns the minimal bounding box for the geometry
calculateBoundingBox
centroid	Returns the centroid of the geometry
childCount
childGeometry
childPoint
clear	Clears the geometry, ie reset it to a null geometry
clearCache
clone	Clones the geometry by performing a deep copy
closestSegment	Searches for the closest segment of the geometry to a given point.
convertTo	Converts the geometry to a specified type.
coordinateSequence	Retrieves the sequence of geometries, rings and nodes.
createEmptyWithSameType
deleteVertex	Deletes a vertex within the geometry
dimension	Returns the inherent dimension of the geometry.
draw	Draws the geometry using the specified QPainter.
dropMValue	Drops any measure values which exist in the geometry.
dropZValue	Drops any z-dimensions which exist in the geometry.
fromWkb	Sets the geometry from a WKB string.
fromWkt	Sets the geometry from a WKT string.
geometryType	Returns a unique string representing the geometry type.
hasChildGeometries
hasCurvedSegments	Returns true if the geometry contains curved segments
insertVertex	Inserts a vertex into the geometry
is3D	Returns true if the geometry is 3D and contains a z-value.
isEmpty	Returns true if the geometry is empty
isMeasure	Returns true if the geometry contains m values.
length	Returns the length of the geometry.
moveVertex	Moves a vertex within the geometry
nCoordinates	Returns the number of nodes contained in the geometry
nextVertex	Returns next vertex id and coordinates
partCount	Returns count of parts contained in the geometry.
perimeter	Returns the perimeter of the geometry.
removeDuplicateNodes	Removes duplicate nodes from the geometry, wherever removing the nodes does not result in a degenerate geometry.
ringCount	Returns the number of rings of which this geometry is built.
segmentLength	Returns the length of the segment of the geometry which begins at startVertex.
segmentize	Returns a version of the geometry without curves.
setZMTypeFromSubGeometry
snappedToGrid	Makes a new geometry with all the points or vertices snapped to the closest point of the grid.
surfaceToPolygon	Get a polygon representation of this surface.
toCurveType	Returns the geometry converted to the more generic curve type.
transform	Transforms the geometry using a coordinate transform
vertexAngle	Returns approximate angle at a vertex.
vertexAt	Returns the point corresponding to a specified vertex id
vertexCount	Returns the number of vertices of which this geometry is built.
vertexNumberFromVertexId	Returns the vertex number corresponding to a vertex id.
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

boundingBox(self) → QgsRectangle

Returns the minimal bounding box for the geometry

calculateBoundingBox()

childCount()

childGeometry()

childPoint()

clearCache(self)

createEmptyWithSameType()

hasChildGeometries()

setZMTypeFromSubGeometry()

surfaceToPolygon(self) → QgsPolygon

Get a polygon representation of this surface. Ownership is transferred to the caller.