Class: QgsNurbsUtils

Utility functions for working with NURBS curves.

Added in version 4.0.

List of all members, including inherited members

Methods

extractNurbsCurve

Extracts the first NURBS curve found in the geom (recursively).

Static Methods

containsNurbsCurve	Returns True if the geom contains a NURBS curve (recursively).
findNurbsCurveForVertex	Finds the NURBS curve containing the vertex identified by vid.

class qgis.core.QgsNurbsUtils

Bases: object

static containsNurbsCurve(geom: QgsAbstractGeometry | None) → bool

Returns True if the geom contains a NURBS curve (recursively).

Parameters:

geom (Optional[QgsAbstractGeometry])

Return type:

bool

extractNurbsCurve(geom: QgsAbstractGeometry | None) → QgsNurbsCurve | None

Extracts the first NURBS curve found in the geom (recursively). Returns None if no NURBS curve is found.

Parameters:

geom (Optional[QgsAbstractGeometry])

Return type:

Optional[QgsNurbsCurve]

static findNurbsCurveForVertex(geom: QgsAbstractGeometry | None, vid: QgsVertexId)

Finds the NURBS curve containing the vertex identified by vid.

Parameters:

• geom (Optional[QgsAbstractGeometry]) – the geometry to search in

• vid (QgsVertexId) – the vertex identifier to search for

Return type:

(Optional[QgsNurbsCurve], int)

Returns:

• the NURBS curve containing the vertex, or None if the vertex is not part of a NURBS curve

• localIndex: the control point index within the found NURBS curve