- some changes in the app.on_togle_units() to make sure we don't try to convert empty parameters which may cause crashes on FlatCAM units change

- updated setup_ubuntu.sh file
- made sure to import certain libraries in some of the FlatCAM files and not to rely on chained imports

tclCommands/TclCommandCutout.py

@@ -1,5 +1,7 @@
 from ObjectCollection import *
 from tclCommands.TclCommand import TclCommand
+from shapely.ops import cascaded_union
+from shapely.geometry import LineString
 
 
 class TclCommandCutout(TclCommand):
@@ -81,11 +83,12 @@ class TclCommandCutout(TclCommand):
 
         try:
             obj = self.app.collection.get_by_name(str(name))
-        except:
+        except Exception as e:
+            log.debug("TclCommandCutout.execute() --> %s" % str(e))
             return "Could not retrieve object: %s" % name
 
         def geo_init_me(geo_obj, app_obj):
-            margin =  margin_par + dia_par / 2
+            margin = margin_par + dia_par / 2
             gap_size = dia_par + gapsize_par
 
             minx, miny, maxx, maxy = obj.bounds()

tclCommands/TclCommandGeoCutout.py

@@ -1,11 +1,15 @@
 from ObjectCollection import *
 from tclCommands.TclCommand import TclCommandSignaled
 from copy import deepcopy
+from shapely.ops import cascaded_union
+from shapely.geometry import Polygon, LineString, LinearRing
 
 
 class TclCommandGeoCutout(TclCommandSignaled):
     """
-        Tcl shell command to create a board cutout geometry. Allow cutout for any shape. Cuts holding gaps from geometry.
+        Tcl shell command to create a board cutout geometry.
+        Allow cutout for any shape.
+        Cuts holding gaps from geometry.
 
         example:
 
@@ -66,9 +70,9 @@ class TclCommandGeoCutout(TclCommandSignaled):
         :return:
         """
 
-        def subtract_rectangle(obj_, x0, y0, x1, y1):
-            pts = [(x0, y0), (x1, y0), (x1, y1), (x0, y1)]
-            obj_.subtract_polygon(pts)
+        # def subtract_rectangle(obj_, x0, y0, x1, y1):
+        #     pts = [(x0, y0), (x1, y0), (x1, y1), (x0, y1)]
+        #     obj_.subtract_polygon(pts)
 
         def substract_rectangle_geo(geo, x0, y0, x1, y1):
             pts = [(x0, y0), (x1, y0), (x1, y1), (x0, y1)]