def on_geometry_changed(self, fid: int, geometry: QgsGeometry) -> None:
"""
Slot activated, if a geometry changed in an edit session of the currently selected active layer
:param fid: FeatureID of the changed geometry
:param geometry: changed QgsGeometry object
:return: Nothing
"""
# noinspection PyCallByClass,PyArgumentList,PyTypeChecker
QgsMessageLog.logMessage("on_geometry_changed [{}]: {}".format(
fid, str(geometry.asJson())),
level=0)
if self.__line_construct.active_feature_id == fid:
# -> last part of self._parse_selection
self.__line_construct.active_geometry = geometry
if self.__line_construct.active_geometry.isEmpty():
self.iface.messageBar().pushWarning(
"Warning", "Selected an empty geometry!")
self.__line_construct.reset()
return
if self.__line_construct.active_geometry.isMultipart():
self.__line_construct.active_geometry = self.__line_construct.active_geometry.asGeometryCollection(
)[0]
line = self.__line_construct.active_geometry.asPolyline()
if len(line) < 2:
self.iface.messageBar().pushWarning(
"Warning",
"Selected line has less than two points. Cannot use it.")
self.__line_construct.reset()
return
self.__line_construct.active_line = line
def set_draw_aoi(self, aoi):
# noinspection PyArgumentList
transform = QgsCoordinateTransform(
QgsProject.instance().crs(),
QgsCoordinateReferenceSystem("EPSG:4326"),
QgsProject.instance())
aoi_json = None
if isinstance(aoi, QgsRectangle):
aoi_geom = QgsGeometry().fromRect(aoi)
self._aoi_box.setToGeometry(aoi_geom)
aoi_geom.transform(transform)
aoi_json = aoi_geom.asJson(precision=6)
if isinstance(aoi, QgsGeometry):
if aoi.isMultipart():
aoi = QgsGeometry.fromPolygonXY(aoi.asMultiPolygon()[0])
self._aoi_box.setToGeometry(aoi)
# TODO: validate geom is less than 500 vertices
aoi.transform(transform)
aoi_json = aoi.asJson(precision=6)
if aoi_json:
self.leAOI.setText(aoi_json)
# noinspection PyUnresolvedReferences
self._show_message('AOI set to drawn figure')
self.zoom_to_aoi()
if self._cur_maptool is not None:
# Restore previously used maptool
self._canvas.setMapTool(self._cur_maptool)
self._cur_maptool = None
else:
# Fallback to activating pan tool
self._iface.actionPan().trigger()
else:
# noinspection PyUnresolvedReferences
self._show_message('AOI unable to be set',
level=Qgis.Warning,
duration=10)
def QgsGeometrytoGeoJSON(geom: QgsGeometry) -> str:
ret = geom.asJson()
return ret
