Merge pull request #5343 from Russ4262/fix/open_edge_zero_start

[Path] Fix open edge zero value start point

src/Mod/Path/PathScripts/PathAreaOp.py

@@ -36,6 +36,7 @@ Part = LazyLoader('Part', globals(), 'Part')
 
 if FreeCAD.GuiUp:
     import FreeCADGui
+PathGeom = LazyLoader("PathScripts.PathGeom", globals(), "PathScripts.PathGeom")
 
 __title__ = "Base class for PathArea based operations."
 __author__ = "sliptonic (Brad Collette)"
@@ -305,11 +306,18 @@ class ObjectOp(PathOp.ObjectOp):
                 pathParams['preamble'] = False
 
                 if self.endVector is None:
-                    V = hWire.Wires[0].Vertexes
-                    lv = len(V) - 1
-                    pathParams['start'] = FreeCAD.Vector(V[0].X, V[0].Y, V[0].Z)
-                    if obj.Direction == 'CCW':
-                        pathParams['start'] = FreeCAD.Vector(V[lv].X, V[lv].Y, V[lv].Z)
+                    verts = hWire.Wires[0].Vertexes
+                    idx = 0
+                    if obj.Direction == "CCW":
+                        idx = len(verts) - 1
+                    x = verts[idx].X
+                    y = verts[idx].Y
+                    # Zero start value adjustments for Path.fromShapes() bug
+                    if PathGeom.isRoughly(x, 0.0):
+                        x = 0.00001
+                    if PathGeom.isRoughly(y, 0.0):
+                        y = 0.00001
+                    pathParams["start"] = FreeCAD.Vector(x, y, verts[0].Z)
                 else:
                     pathParams['start'] = self.endVector