From 09f134d56f864ea5393a982d7bb59333a23ef814 Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Wed, 30 Jan 2019 20:01:59 +1100
Subject: [PATCH] Add split tool

---
 src/Mod/Draft/Draft.py      | 16 +++++++++++++++
 src/Mod/Draft/DraftTools.py | 40 ++++++++++++++++++++++++++++++++++++-
 src/Mod/Draft/InitGui.py    |  2 +-
 3 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/src/Mod/Draft/Draft.py b/src/Mod/Draft/Draft.py
index 8d805bf437..a4c4b3ac37 100644
--- a/src/Mod/Draft/Draft.py
+++ b/src/Mod/Draft/Draft.py
@@ -1375,6 +1375,22 @@ def joinTwoWires(wire1, wire2):
     FreeCAD.ActiveDocument.removeObject(wire2.Name)
     return True
 
+def split(wire, newPoint, edgeIndex):
+    wire1Points = []
+    wire2Points = []
+    for index, point in enumerate(wire.Points):
+        if index == edgeIndex:
+            wire1Points.append(wire.Placement.inverse().multVec(newPoint))
+            wire2Points.append(newPoint)
+            wire2Points.append(wire.Placement.multVec(point))
+        elif index < edgeIndex:
+            wire1Points.append(point)
+        elif index > edgeIndex:
+            wire2Points.append(wire.Placement.multVec(point))
+    wire.Points = wire1Points
+    makeWire(wire2Points, placement=wire.Placement)
+    FreeCAD.ActiveDocument.recompute()
+
 def fuse(object1,object2):
     '''fuse(oject1,object2): returns an object made from
     the union of the 2 given objects. If the objects are
diff --git a/src/Mod/Draft/DraftTools.py b/src/Mod/Draft/DraftTools.py
index 7a1269a164..b7bf4de237 100644
--- a/src/Mod/Draft/DraftTools.py
+++ b/src/Mod/Draft/DraftTools.py
@@ -3212,7 +3212,7 @@ class Join(Modifier):
 
     def GetResources(self):
         return {'Pixmap'  : 'Draft_Upgrade',
-                'Accel' : "F, U",
+                'Accel' : "J, O",
                 'MenuText': QtCore.QT_TRANSLATE_NOOP("Draft_Join", "Join"),
                 'ToolTip': QtCore.QT_TRANSLATE_NOOP("Draft_Join", "Joins two wires together")}
 
@@ -3237,6 +3237,43 @@ class Join(Modifier):
                 ['Draft.joinWires(FreeCADGui.Selection.getSelection())', 'FreeCAD.ActiveDocument.recompute()'])
         self.finish()
 
+class Split(Modifier):
+    '''The Draft_Split FreeCAD command definition.'''
+
+    def GetResources(self):
+        return {'Pixmap'  : 'Draft_Downgrade',
+                'Accel' : "S, P",
+                'MenuText': QtCore.QT_TRANSLATE_NOOP("Draft_Split", "Split"),
+                'ToolTip': QtCore.QT_TRANSLATE_NOOP("Draft_Split", "Splits a wire into two wires")}
+
+    def Activated(self):
+        Modifier.Activated(self,"Split")
+        if not self.ui:
+            return
+        msg(translate("draft", "Select an object to split")+"\n")
+        self.call = self.view.addEventCallback("SoEvent", self.action)
+
+    def action(self, arg):
+        "scene event handler"
+        if arg["Type"] == "SoKeyboardEvent":
+            if arg["Key"] == "ESCAPE":
+                self.finish()
+        elif arg["Type"] == "SoLocation2Event":
+            getPoint(self, arg)
+            redraw3DView()
+        elif arg["Type"] == "SoMouseButtonEvent" and arg["State"] == "DOWN" and arg["Button"] == "BUTTON1":
+            print('clicky!')
+            self.point, ctrlPoint, info = getPoint(self, arg)
+            if "Edge" in info["Component"]:
+                return self.proceed(info)
+
+    def proceed(self, info):
+        Draft.split(FreeCAD.ActiveDocument.getObject(info["Object"]),
+            self.point, int(info["Component"][4:]))
+        if self.call:
+            self.view.removeEventCallback("SoEvent", self.call)
+        self.finish()
+
 class Upgrade(Modifier):
     '''The Draft_Upgrade FreeCAD command definition.'''
 
@@ -5853,6 +5890,7 @@ FreeCADGui.addCommand('Draft_Move',Move())
 FreeCADGui.addCommand('Draft_Rotate',Rotate())
 FreeCADGui.addCommand('Draft_Offset',Offset())
 FreeCADGui.addCommand('Draft_Join',Join())
+FreeCADGui.addCommand('Draft_Split',Split())
 FreeCADGui.addCommand('Draft_Upgrade',Upgrade())
 FreeCADGui.addCommand('Draft_Downgrade',Downgrade())
 FreeCADGui.addCommand('Draft_Trimex',Trimex())
diff --git a/src/Mod/Draft/InitGui.py b/src/Mod/Draft/InitGui.py
index 39f69bf430..89a9f803b4 100644
--- a/src/Mod/Draft/InitGui.py
+++ b/src/Mod/Draft/InitGui.py
@@ -73,7 +73,7 @@ class DraftWorkbench (Workbench):
                         "Draft_Dimension", "Draft_BSpline","Draft_Point",
                         "Draft_ShapeString","Draft_Facebinder","Draft_BezCurve","Draft_Label"]
         self.modList = ["Draft_Move","Draft_Rotate","Draft_Offset",
-                        "Draft_Trimex", "Draft_Join", "Draft_Upgrade", "Draft_Downgrade", "Draft_Scale",
+                        "Draft_Trimex", "Draft_Join", "Draft_Split", "Draft_Upgrade", "Draft_Downgrade", "Draft_Scale",
                         "Draft_Edit","Draft_WireToBSpline","Draft_AddPoint",
                         "Draft_DelPoint","Draft_Shape2DView","Draft_Draft2Sketch","Draft_Array",
                         "Draft_PathArray", "Draft_PointArray","Draft_Clone",