Class: QgsInternalGeometrySnapper¶
-
class
qgis.analysis.
QgsInternalGeometrySnapper
(snapTolerance: float, mode: QgsGeometrySnapper.SnapMode = QgsGeometrySnapper.PreferNodes)¶ Bases:
sip.wrapper
Constructor for
QgsInternalGeometrySnapper
. ThesnapTolerance
andmode
parameters dictate how geometries will be snapped by the snapper.QgsInternalGeometrySnapper(
QgsInternalGeometrySnapper
)QgsInternalGeometrySnapper
allows a set of geometries to be snapped to each other. It can be used to close gaps in layers.To use
QgsInternalGeometrySnapper
, first construct the snapper using the desired snap parameters. Then, features are fed to to the snapper one-by-one by callingsnapFeature()
. Each feature passed by callingsnapFeature()
will be snapped to any features which have already been processed by the snapper.After processing all desired features, the results can be fetched by calling
snappedGeometries()
. The returnedQgsGeometryMap
can be passed toQgsVectorDataProvider.changeGeometryValues()
to save the snapped geometries back to the source layer.New in version 3.0.
- Parameters
snapTolerance (float) –
mode –
-
snapFeature
(self, feature: QgsFeature) → QgsGeometry¶ Snaps a single feature’s geometry against all feature geometries already processed by calls to
snapFeature()
in this object, and returns the snapped geometry.- Parameters
feature (QgsFeature) –
- Return type
-
snappedGeometries
(self) → object¶ Returns a
QgsGeometryMap
of all feature geometries snapped by this object.- Return type
object