From e4a635ad079e2931922a19ce5ecb96144fb23b9d Mon Sep 17 00:00:00 2001
From: Roy-043 <70520633+Roy-043@users.noreply.github.com>
Date: Tue, 5 Aug 2025 21:41:03 +0200
Subject: [PATCH] Draft: project point in split operation and copy original
 wire (#22452)

* Roy 043 patch 1 (#6)

* Update split.py

* Update gui_split.py

* Add recompute to update wire in split test

* Avoid circular import: init_draft_statusbar -> params -> init_draft_statusbar

* Remove accidentally added "ui/preferences-webgl.ui"
---
 src/Mod/Draft/draftfunctions/split.py         | 24 ++++++++++---------
 src/Mod/Draft/draftguitools/gui_split.py      |  1 -
 src/Mod/Draft/drafttests/test_modification.py |  1 +
 src/Mod/Draft/draftutils/params.py            |  3 ++-
 4 files changed, 16 insertions(+), 13 deletions(-)

diff --git a/src/Mod/Draft/draftfunctions/split.py b/src/Mod/Draft/draftfunctions/split.py
index 9d663ca768..db8231e626 100644
--- a/src/Mod/Draft/draftfunctions/split.py
+++ b/src/Mod/Draft/draftfunctions/split.py
@@ -27,9 +27,8 @@
 
 ## \addtogroup draftfunctions
 # @{
-import draftutils.utils as utils
-import draftmake.make_wire as make_wire
-
+from draftmake import make_copy
+from draftutils import utils
 
 def split(wire, newPoint, edgeIndex):
     if utils.get_type(wire) != "Wire":
@@ -41,12 +40,11 @@ def split(wire, newPoint, edgeIndex):
 
 def split_closed_wire(wire, edgeIndex):
     wire.Closed = False
+    new = make_copy.make_copy(wire)
     if edgeIndex == len(wire.Points):
-        new = make_wire.make_wire([wire.Placement.multVec(wire.Points[0]),
-            wire.Placement.multVec(wire.Points[-1])], placement=wire.Placement)
+        new.Points = [wire.Points[0], wire.Points[-1]]
     else:
-        new = make_wire.make_wire([wire.Placement.multVec(wire.Points[edgeIndex-1]),
-            wire.Placement.multVec(wire.Points[edgeIndex])], placement=wire.Placement)
+        new.Points = [wire.Points[edgeIndex-1], wire.Points[edgeIndex]]
         wire.Points = list(reversed(wire.Points[0:edgeIndex])) + list(reversed(wire.Points[edgeIndex:]))
     return new
 
@@ -55,19 +53,23 @@ splitClosedWire = split_closed_wire
 
 
 def split_open_wire(wire, newPoint, edgeIndex):
+    new = make_copy.make_copy(wire)
     wire1Points = []
     wire2Points = []
     for index, point in enumerate(wire.Points):
         if index == edgeIndex:
-            wire1Points.append(wire.Placement.inverse().multVec(newPoint))
+            edge = wire.getSubObject("Edge" + str(edgeIndex))
+            newPoint = wire.Placement.inverse().multVec(edge.Curve.projectPoint(newPoint))
+            wire1Points.append(newPoint)
             wire2Points.append(newPoint)
-            wire2Points.append(wire.Placement.multVec(point))
+            wire2Points.append(point)
         elif index < edgeIndex:
             wire1Points.append(point)
         elif index > edgeIndex:
-            wire2Points.append(wire.Placement.multVec(point))
+            wire2Points.append(point)
     wire.Points = wire1Points
-    return make_wire.make_wire(wire2Points, placement=wire.Placement)
+    new.Points = wire2Points
+    return new
 
 
 splitOpenWire = split_open_wire
diff --git a/src/Mod/Draft/draftguitools/gui_split.py b/src/Mod/Draft/draftguitools/gui_split.py
index 3f13dc80ee..fc9e361620 100644
--- a/src/Mod/Draft/draftguitools/gui_split.py
+++ b/src/Mod/Draft/draftguitools/gui_split.py
@@ -95,7 +95,6 @@ class Split(gui_base_original.Modifier):
         cmd_list = [
             "obj = FreeCAD.ActiveDocument." + wire,
             "new = Draft.split(obj, " + point + ", " + index + ")",
-            "Draft.format_object(new, obj)",
             "FreeCAD.ActiveDocument.recompute()"
         ]
 
diff --git a/src/Mod/Draft/drafttests/test_modification.py b/src/Mod/Draft/drafttests/test_modification.py
index 66942475d5..da20ba74fe 100644
--- a/src/Mod/Draft/drafttests/test_modification.py
+++ b/src/Mod/Draft/drafttests/test_modification.py
@@ -236,6 +236,7 @@ class DraftModification(test_base.DraftTestCaseDoc):
         _msg("  a={0}, b={1}".format(a, b))
         _msg("  c={0}, d={1}".format(c, d))
         wire = Draft.make_wire([a, b, c, d])
+        self.doc.recompute()
 
         index = 1
         _msg("  Split at")
diff --git a/src/Mod/Draft/draftutils/params.py b/src/Mod/Draft/draftutils/params.py
index 2720f4d81d..3783d296b9 100644
--- a/src/Mod/Draft/draftutils/params.py
+++ b/src/Mod/Draft/draftutils/params.py
@@ -34,7 +34,6 @@ try:
 except ModuleNotFoundError:
     pass
 
-from draftutils import init_draft_statusbar
 from draftutils.translate import translate
 
 if App.GuiUp:
@@ -95,6 +94,8 @@ def _param_observer_callback_tray():
 
 def _param_observer_callback_scalemultiplier(value):
     # value is a string.
+    # import has to happen here to avoid circular imports
+    from draftutils import init_draft_statusbar
     if not value:
         return
     value = float(value)