Fixed selection of vertexes and faces - and added support for faces as base objects.

src/Mod/Path/PathScripts/PathEngrave.py

@@ -106,7 +106,9 @@ class ObjectEngrave(PathOp.ObjectOp):
             elif obj.Base:
                 wires = []
                 for base, subs in obj.Base:
-                    edges = [base.Shape.getElement(sub) for sub in subs]
+                    edges = []
+                    for sub in subs:
+                        edges.extend(base.Shape.getElement(sub).Edges)
                     wires.extend(TechDraw.edgeWalker(edges))
                 output += self.buildpathocc(obj, wires, zValues)
                 self.wires = wires
@@ -124,8 +126,8 @@ class ObjectEngrave(PathOp.ObjectOp):
             self.commandlist.append(Path.Command('G0', {'Z': obj.ClearanceHeight.Value, 'F': self.vertRapid}))
 
         except Exception as e:
-            #PathLog.error("Exception: %s" % e)
-            #traceback.print_exc()
+            PathLog.error("Exception: %s" % e)
+            traceback.print_exc()
             PathLog.error(translate("Path", "The Job Base Object has no engraveable element.  Engraving operation will produce no output."))
 
     def buildpathocc(self, obj, wires, zValues):

src/Mod/Path/PathScripts/PathEngraveGui.py

@@ -61,8 +61,12 @@ class TaskPanelBaseGeometryPage(PathOpGui.TaskPanelBaseGeometryPage):
             if sel.Object.isDerivedFrom('Part::Part2DObject'):
                 if sel.HasSubObjects:
                     for sub in sel.SubElementNames:
-                        self.obj.Proxy.addBase(self.obj, sel.Object, sub)
+                        if 'Vertex' in sub:
+                            PathLog.info(translate("Path", "Ignoring vertex"))
+                        else:
+                            self.obj.Proxy.addBase(self.obj, sel.Object, sub)
                 else:
+                    self.obj.Base = [p for p,el in self.obj.Base if p != sel.Object]
                     shapes.append(sel.Object)
                     self.obj.BaseShapes = shapes
                 added = True

src/Mod/Path/PathScripts/PathOpGui.py

@@ -675,9 +675,9 @@ class TaskPanelDepthsPage(TaskPanelPage):
     def selectionZLevel(self, sel):
         if len(sel) == 1 and len(sel[0].SubObjects) == 1:
             sub = sel[0].SubObjects[0]
+            if 'Vertex' == sub.ShapeType:
+                return sub.Z
             if PathGeom.isHorizontal(sub):
-                if 'Vertex' == sub.ShapeType:
-                    return sub.Z
                 if 'Edge' == sub.ShapeType:
                     return sub.Vertexes[0].Z
                 if 'Face' == sub.ShapeType: