- in Excellon Editor and Geometry Editor solved some Shapely 2.0 deprecation warnings

- in Excellon Editor made sure that the tool diameter is always updated before adding a new drill (or drill array)
- changing units is not possible while in Editors
- changing units outside the Preferences will make no permanent changes
- deleting all shapes from the shapes collection (OpenGl graphics) will reset also the index in the collection data dict

appObjects/FlatCAMDocument.py

@@ -9,6 +9,7 @@
 # ##########################################################
 # File modified by: Marius Stanciu                         #
 # ##########################################################
+from PyQt6 import QtGui
 
 from appEditors.AppTextEditor import AppTextEditor
 from appObjects.FlatCAMObj import *

appObjects/FlatCAMGerber.py

@@ -943,7 +943,7 @@ class GerberObject(FlatCAMObj, Gerber):
 
             plot_geometry = geometry.geoms if isinstance(geometry, (MultiPolygon, MultiLineString)) else geometry
             for g in plot_geometry:
-                if isinstance(g, (Polygon, LineString)):
+                if isinstance(g, (Polygon, LineString, LinearRing)):
                     self.add_shape(shape=g, color=used_color, face_color=used_face_color, visible=visible)
 
             self.shapes.redraw(