Draft split Split from Draft.py

src/Mod/Draft/draftfunctions/split.py

@@ -0,0 +1,73 @@
+# ***************************************************************************
+# *   Copyright (c) 2009, 2010 Yorik van Havre <yorik@uncreated.net>        *
+# *   Copyright (c) 2009, 2010 Ken Cline <cline@frii.com>                   *
+# *   Copyright (c) 2020 FreeCAD Developers                                 *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   This program is distributed in the hope that it will be useful,       *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with this program; if not, write to the Free Software   *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+"""This module provides the code for Draft split functions.
+"""
+## @package split
+# \ingroup DRAFT
+# \brief This module provides the code for Draft split functions.
+
+import draftutils.utils as utils
+
+from draftmake.make_wire import make_wire
+
+
+def split(wire, newPoint, edgeIndex):
+    if utils.get_type(wire) != "Wire":
+        return
+    elif wire.Closed:
+        split_closed_wire(wire, edgeIndex)
+    else:
+        split_open_wire(wire, newPoint, edgeIndex)
+
+
+def split_closed_wire(wire, edgeIndex):
+    wire.Closed = False
+    if edgeIndex == len(wire.Points):
+        make_wire([wire.Placement.multVec(wire.Points[0]),
+            wire.Placement.multVec(wire.Points[-1])], placement=wire.Placement)
+    else:
+        make_wire([wire.Placement.multVec(wire.Points[edgeIndex-1]),
+            wire.Placement.multVec(wire.Points[edgeIndex])], placement=wire.Placement)
+        wire.Points = list(reversed(wire.Points[0:edgeIndex])) + list(reversed(wire.Points[edgeIndex:]))
+
+
+splitClosedWire = split_closed_wire
+
+
+def split_open_wire(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
+    make_wire(wire2Points, placement=wire.Placement)
+
+
+splitOpenWire = split_open_wire