Make Helix op robust against features that don't exist anymore

src/Mod/Path/PathScripts/PathCircularHoleBase.py

@@ -152,18 +152,21 @@ class ObjectOp(PathOp.ObjectOp):
             center = edge.Curve.Center
             return FreeCAD.Vector(center.x, center.y, 0)
 
-        shape = base.Shape.getElement(sub)
-        if shape.ShapeType == 'Vertex':
-            return FreeCAD.Vector(shape.X, shape.Y, 0)
+        try:
+            shape = base.Shape.getElement(sub)
+            if shape.ShapeType == 'Vertex':
+                return FreeCAD.Vector(shape.X, shape.Y, 0)
 
-        if shape.ShapeType == 'Edge' and hasattr(shape.Curve, 'Center'):
-            return FreeCAD.Vector(shape.Curve.Center.x, shape.Curve.Center.y, 0)
+            if shape.ShapeType == 'Edge' and hasattr(shape.Curve, 'Center'):
+                return FreeCAD.Vector(shape.Curve.Center.x, shape.Curve.Center.y, 0)
 
-        if shape.ShapeType == 'Face':
-            if hasattr(shape.Surface, 'Center'):
-                return FreeCAD.Vector(shape.Surface.Center.x, shape.Surface.Center.y, 0)
-            if len(shape.Edges) == 1 and type(shape.Edges[0].Curve) == Part.Circle:
-                return shape.Edges[0].Curve.Center
+            if shape.ShapeType == 'Face':
+                if hasattr(shape.Surface, 'Center'):
+                    return FreeCAD.Vector(shape.Surface.Center.x, shape.Surface.Center.y, 0)
+                if len(shape.Edges) == 1 and type(shape.Edges[0].Curve) == Part.Circle:
+                    return shape.Edges[0].Curve.Center
+        except Part.OCCError as e:
+            PathLog.error(e)
 
         PathLog.error(translate("Path", "Feature %s.%s cannot be processed as a circular hole - please remove from Base geometry list.") % (base.Label, sub))
         return None

src/Mod/Path/PathScripts/PathHelix.py

@@ -71,6 +71,10 @@ class ObjectHelix(PathCircularHoleBase.ObjectOp):
             obj.addProperty("App::PropertyEnumeration", "EnableRotation", "Rotation", QtCore.QT_TRANSLATE_NOOP("App::Property", "Enable rotation to gain access to pockets/areas not normal to Z axis."))
             obj.EnableRotation = ['Off', 'A(x)', 'B(y)', 'A & B']
 
+    def opOnDocumentRestored(self, obj):
+        if not hasattr(obj, 'StartRadius'):
+            obj.addProperty("App::PropertyLength", "StartRadius", "Helix Drill", translate("PathHelix", "Starting Radius"))
+
     def circularHoleExecute(self, obj, holes):
         '''circularHoleExecute(obj, holes) ... generate helix commands for each hole in holes'''
         PathLog.track()

src/Mod/Path/PathScripts/PathJobGui.py

@@ -121,6 +121,8 @@ class ViewProvider:
         self.vobj = vobj
         self.obj = vobj.Object
         self.taskPanel = None
+        self.baseVisibility = None
+        self.stockVisibility = None
 
         # setup the axis display at the origin
         self.switch = coin.SoSwitch()

src/Mod/Path/PathScripts/PathOp.py

@@ -23,6 +23,7 @@
 # ***************************************************************************
 
 import FreeCAD
+import Part
 import Path
 import PathScripts.PathGeom as PathGeom
 import PathScripts.PathLog as PathLog
@@ -215,6 +216,10 @@ class ObjectOp(object):
         if not hasattr(obj, 'OpStockZMax'):
             self.addOpValues(obj, ['stockz'])
 
+        if not hasattr(obj, 'EnableRotation'):
+            obj.addProperty("App::PropertyEnumeration", "EnableRotation", "Rotation", QtCore.QT_TRANSLATE_NOOP("App::Property", "Enable rotation to gain access to pockets/areas not normal to Z axis."))
+            obj.EnableRotation = ['Off', 'A(x)', 'B(y)', 'A & B']
+
         self.setEditorModes(obj, features)
         self.opOnDocumentRestored(obj)
 
@@ -393,9 +398,13 @@ class ObjectOp(object):
                 bb = base.Shape.BoundBox
                 zmax = max(zmax, bb.ZMax)
                 for sub in sublist:
-                    fbb = base.Shape.getElement(sub).BoundBox
-                    zmin = max(zmin, faceZmin(bb, fbb))
-                    zmax = max(zmax, fbb.ZMax)
+                    try:
+                        fbb = base.Shape.getElement(sub).BoundBox
+                        zmin = max(zmin, faceZmin(bb, fbb))
+                        zmax = max(zmax, fbb.ZMax)
+                    except Part.OCCError as e:
+                        PathLog.error(e)
+
         else:
             # clearing with stock boundaries
             job = PathUtils.findParentJob(obj)