CAM: Profile - Start point in the middle of edges

src/Mod/CAM/Path/Op/Area.py

@@ -219,6 +219,15 @@ class ObjectOp(PathOp.ObjectOp):
         Can safely be overwritten by subclasses."""
         pass
 
+    def getMiddlePointLongestEdge(self, shape):
+        """getMiddlePointLongestEdge(shape) ... return middle point of longest edge from shape."""
+        candidate = shape.Edges[0]
+        for edge in shape.Edges:
+            if edge.Length > candidate.Length:
+                candidate = edge
+
+        return candidate.discretize(3)[1]
+
     def _buildPathArea(self, obj, baseobject, isHole, start, getsim):
         """_buildPathArea(obj, baseobject, isHole, start, getsim) ... internal function."""
         Path.Log.track()
@@ -301,7 +310,13 @@ class ObjectOp(PathOp.ObjectOp):
         if not self.areaOpRetractTool(obj):
             pathParams["threshold"] = 2.001 * self.radius
 
-        if self.endVector is not None:
+        if (
+            not obj.UseStartPoint
+            and getattr(obj, "HandleMultipleFeatures", None) == "Individually"
+            and getattr(obj, "UseLongestEdge", False)
+        ):
+            pathParams["start"] = self.getMiddlePointLongestEdge(shapelist[0])
+        elif self.endVector is not None:
             if self.endVector[:2] != (0, 0):
                 pathParams["start"] = self.endVector
         elif PathOp.FeatureStartPoint & self.opFeatures(obj) and obj.UseStartPoint:

src/Mod/CAM/Path/Op/Profile.py

@@ -191,6 +191,17 @@ class ObjectProfile(PathAreaOp.ObjectOp):
                     "If doing multiple passes, the extra offset of each additional pass",
                 ),
             ),
+            (
+                "App::PropertyBool",
+                "UseLongestEdge",
+                "Start Point",
+                QT_TRANSLATE_NOOP(
+                    "App::Property",
+                    "Override start point"
+                    "\nShoud be used only with Individually HandleMultipleFeatures"
+                    "and disabled UseStartPoint",
+                ),
+            ),
         ]
 
     @classmethod
@@ -294,6 +305,10 @@ class ObjectProfile(PathAreaOp.ObjectOp):
         elif opType == "Edge":
             pass
 
+        useLongestEdgeMode = (
+            0 if obj.HandleMultipleFeatures == "Individually" and not obj.UseStartPoint else 2
+        )
+
         obj.setEditorMode("JoinType", 2)
         obj.setEditorMode("MiterLimit", 2)  # ml
         obj.setEditorMode("Side", side)
@@ -301,6 +316,7 @@ class ObjectProfile(PathAreaOp.ObjectOp):
         obj.setEditorMode("processCircles", fc)
         obj.setEditorMode("processHoles", fc)
         obj.setEditorMode("processPerimeter", fc)
+        obj.setEditorMode("UseLongestEdge", useLongestEdgeMode)
 
     def _getOperationType(self, obj):
         if len(obj.Base) == 0:
@@ -318,9 +334,8 @@ class ObjectProfile(PathAreaOp.ObjectOp):
 
     def areaOpOnChanged(self, obj, prop):
         """areaOpOnChanged(obj, prop) ... updates certain property visibilities depending on changed properties."""
-        if prop in ["UseComp", "JoinType", "Base"]:
-            if hasattr(self, "propertiesReady") and self.propertiesReady:
-                self.setOpEditorProperties(obj)
+        if hasattr(self, "propertiesReady") and self.propertiesReady:
+            self.setOpEditorProperties(obj)
 
     def areaOpAreaParams(self, obj, isHole):
         """areaOpAreaParams(obj, isHole) ... returns dictionary with area parameters.
@@ -560,9 +575,6 @@ class ObjectProfile(PathAreaOp.ObjectOp):
                 FreeCADGui.ActiveDocument.getObject(tmpGrpNm).Visibility = False
             self.tmpGrp.purgeTouched()
 
-        # for shape in shapes:
-        #     Part.show(shape[0])
-        #     print(shape)
         return shapes
 
     # Method to handle each model as a whole, when no faces are selected