From cbe0f782d6df05f2097529d6d17cc3523dd961c0 Mon Sep 17 00:00:00 2001
From: jaisekjames <44542605+jaisekjames@users.noreply.github.com>
Date: Sat, 28 Nov 2020 11:58:33 +0530
Subject: [PATCH 1/5] Sketch on sheetmetal

sketch on sheetmetal
Select a face
select a sketch.
It will create cut based on sketch.
---
 SketchOnSheetMetalCmd.py | 420 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 420 insertions(+)
 create mode 100644 SketchOnSheetMetalCmd.py

diff --git a/SketchOnSheetMetalCmd.py b/SketchOnSheetMetalCmd.py
new file mode 100644
index 0000000..fad61ce
--- /dev/null
+++ b/SketchOnSheetMetalCmd.py
@@ -0,0 +1,420 @@
+# -*- coding: utf-8 -*-
+###################################################################################
+#
+#  SketchOnSheetMetalCmd.py
+#  
+#  Copyright 2015 Shai Seger <shaise at gmail dot com>
+#  
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#  
+#  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 General Public License for more details.
+#  
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+#  MA 02110-1301, USA.
+#  
+#  
+###################################################################################
+
+from FreeCAD import Gui
+from PySide import QtCore, QtGui
+
+import FreeCAD, FreeCADGui, Part, os, math
+__dir__ = os.path.dirname(__file__)
+iconPath = os.path.join( __dir__, 'Resources', 'icons' )
+smEpsilon = 0.0000001
+
+import SheetMetalBendSolid
+
+def smWarnDialog(msg):
+    diag = QtGui.QMessageBox(QtGui.QMessageBox.Warning, 'Error in macro MessageBox', msg)
+    diag.setWindowModality(QtCore.Qt.ApplicationModal)
+    diag.exec_()
+ 
+def smBelongToBody(item, body):
+    if (body is None):
+        return False
+    for obj in body.Group:
+        if obj.Name == item.Name:
+            return True
+    return False
+    
+def smIsPartDesign(obj):
+    return str(obj).find("<PartDesign::") == 0
+        
+def smIsOperationLegal(body, selobj):
+    #FreeCAD.Console.PrintLog(str(selobj) + " " + str(body) + " " + str(smBelongToBody(selobj, body)) + "\n")
+    if smIsPartDesign(selobj) and not smBelongToBody(selobj, body):
+        smWarnDialog("The selected geometry does not belong to the active Body.\nPlease make the container of this item active by\ndouble clicking on it.")
+        return False
+    return True    
+
+def smFace(sel_item, obj) :
+  # find face if Edge Selected
+  if type(sel_item) == Part.Edge :
+    Facelist = obj.ancestorsOfType(sel_item, Part.Face)
+    if Facelist[0].Area > Facelist[1].Area :
+      selFace = Facelist[0]
+    else :
+      selFace = Facelist[1]
+  elif type(sel_item) == Part.Face :
+    selFace = sel_item
+  return selFace
+
+
+def smthk(obj, foldface) :
+  normal = foldface.normalAt(0,0)
+  theVol = obj.Volume
+  if theVol < 0.0001:
+      SMError("Shape is not a real 3D-object or to small for a metal-sheet!")
+  else:
+      # Make a first estimate of the thickness
+      estimated_thk = theVol/(obj.Area / 2.0)
+#  p1 = foldface.CenterOfMass
+  for v in foldface.Vertexes :
+    p1 = v.Point
+    p2 = p1 + estimated_thk * -1.5 * normal
+    e1 = Part.makeLine(p1, p2)
+    thkedge = obj.common(e1)
+    thk = thkedge.Length
+    if thk > smEpsilon :
+      break
+  return thk
+
+def smCutFace(Face, obj) :
+  # find face Modified During loop
+  for face in obj.Faces :
+    face_common = face.common(Face)
+    if face_common.Faces :
+      break
+  return face
+
+def smGetEdge(Face, obj) :
+  # find face Modified During loop
+  for edge in obj.Edges :
+    face_common = edge.common(Face)
+    if face_common.Edges :
+      break
+  return edge
+
+def equal_angle(ang1, ang2, p=5):
+  # compares two angles
+  result = False
+  if round(ang1 - ang2, p)==0:
+    result = True
+  if round((ang1-2.0*math.pi) - ang2, p)==0:
+    result = True
+  if round(ang1 - (ang2-2.0*math.pi), p)==0:
+    result = True
+  return result
+
+def bendAngle(theFace, edge_vec) :
+  #Start to investigate the angles at self.__Shape.Faces[face_idx].ParameterRange[0]
+  #Part.show(theFace,"theFace") 
+  #valuelist =  theFace.ParameterRange
+  #print(valuelist)
+  angle_0 = theFace.ParameterRange[0]
+  angle_1 = theFace.ParameterRange[1]
+
+  # idea: identify the angle at edge_vec = P_edge.Vertexes[0].copy().Point
+  # This will be = angle_start
+  # calculate the tan_vec from valueAt
+  edgeAngle, edgePar = theFace.Surface.parameter(edge_vec)
+  #print('the angles: ', angle_0, ' ', angle_1, ' ', edgeAngle, ' ', edgeAngle - 2*math.pi)
+
+  if equal_angle(angle_0, edgeAngle):
+    angle_start = angle_0
+    angle_end = angle_1
+  else:
+    angle_start = angle_1
+    angle_end = angle_0
+
+  bend_angle = angle_end - angle_start
+  angle_tan = angle_start + bend_angle/6.0 # need to have the angle_tan before correcting the sign
+
+  if bend_angle < 0.0:
+    bend_angle = -bend_angle
+
+  #print(math.degrees(bend_angle))
+  return math.degrees(bend_angle)
+
+def smSketchOnSheetMetal(kfactor = 0.5, sketch = '', flipped = False, selFaceNames = '', MainObject = None):
+  resultSolid = MainObject.Shape.copy()
+  selElement = resultSolid.getElement(selFaceNames[0])
+  LargeFace = smFace(selElement, resultSolid)
+  sketch_face = Part.makeFace(sketch.Shape.Wires,"Part::FaceMakerBullseye" )
+
+
+  #To get thk of sheet, top face normal
+  thk = smthk(resultSolid, LargeFace)
+  #print(thk)
+
+  #To get top face normal, flatsolid
+  solidlist = []
+  normal = LargeFace.normalAt(0,0)
+  #To check face direction 
+  coeff = normal.dot(sketch_face.Faces[0].normalAt(0,0))
+  if coeff < 0 :
+    sketch_face.reverse()
+  Flatface = sketch_face.common(LargeFace)
+  BalanceFaces = sketch_face.cut(Flatface)
+  #Part.show(BalanceFace,"BalanceFace")
+  Flatsolid = Flatface.extrude(normal * -thk)
+  #Part.show(Flatsolid,"Flatsolid")
+  solidlist.append(Flatsolid)
+
+  if BalanceFaces.Faces :
+    for BalanceFace in BalanceFaces.Faces :
+      #Part.show(BalanceFace,"BalanceFace") 
+      TopFace = LargeFace
+      #Part.show(TopFace,"TopFace") 
+      #flipped = False
+      while BalanceFace.Faces :
+        BendEdge = smGetEdge(BalanceFace, TopFace)
+        #Part.show(BendEdge,"BendEdge") 
+        facelist = resultSolid.ancestorsOfType(BendEdge, Part.Face)
+  
+        #To get bend radius, bend angle
+        for cylface in facelist :
+          if issubclass(type(cylface.Surface),Part.Cylinder) :
+            break
+        if not(issubclass(type(cylface.Surface),Part.Cylinder)) :
+          break
+        #Part.show(cylface,"cylface") 
+        for planeface in facelist :
+          if issubclass(type(planeface.Surface),Part.Plane) :
+            break
+        #Part.show(planeface,"planeface")       
+        normal = planeface.normalAt(0,0)
+        revAxisV = cylface.Surface.Axis
+        revAxisP = cylface.Surface.Center
+        bendA = bendAngle(cylface, revAxisP)
+        #print([bendA, revAxisV, revAxisP, cylface.Orientation]) 
+
+        #To check bend direction
+        offsetface = cylface.makeOffsetShape(-thk, 0.0, fill = False)
+        #Part.show(offsetface,"offsetface") 
+        if offsetface.Area < cylface.Area :
+          bendR = cylface.Surface.Radius - thk
+          flipped = True
+        else :
+          bendR = cylface.Surface.Radius
+          flipped = False
+
+        #To arrive unfold Length, neturalRadius
+        unfoldLength = ( bendR + kfactor * thk ) * abs(bendA) * math.pi / 180.0
+        neturalRadius =  ( bendR + kfactor * thk )
+        #print([unfoldLength,neturalRadius])
+  
+        #To get faceNormal, bend face
+        faceNormal = normal.cross(revAxisV).normalize()
+        #print(faceNormal)
+        if bendR < cylface.Surface.Radius :
+          offsetSolid = cylface.makeOffsetShape(bendR/2.0, 0.0, fill = True)
+        else:
+          offsetSolid = cylface.makeOffsetShape(-bendR/2.0, 0.0, fill = True)
+        #Part.show(offsetSolid,"offsetSolid") 
+        tool = BendEdge.copy()
+        FaceArea = tool.extrude(faceNormal * -unfoldLength )
+        #Part.show(FaceArea,"FaceArea") 
+        #Part.show(BalanceFace,"BalanceFace") 
+        SolidFace = offsetSolid.common(FaceArea)
+        #Part.show(BendSolidFace,"BendSolidFace") 
+        if not(SolidFace.Faces):
+          faceNormal = faceNormal * -1
+          FaceArea = tool.extrude(faceNormal * -unfoldLength )
+        BendSolidFace = BalanceFace.common(FaceArea)
+        #Part.show(FaceArea,"FaceArea")
+        #Part.show(BendSolidFace,"BendSolidFace")
+        #print([bendR, bendA, revAxisV, revAxisP, normal, flipped, BendSolidFace.Faces[0].normalAt(0,0)]) 
+    
+        bendsolid = SheetMetalBendSolid.BendSolid(BendSolidFace.Faces[0], BendEdge, bendR, thk, neturalRadius, revAxisV, flipped)
+        #Part.show(bendsolid,"bendsolid")
+        solidlist.append(bendsolid)
+
+        if flipped == True:
+          bendA = -bendA
+        if not(SolidFace.Faces):
+          revAxisV = revAxisV * -1
+        sketch_face = BalanceFace.cut(BendSolidFace)
+        sketch_face.translate(faceNormal * unfoldLength)
+        #Part.show(sketch_face,"sketch_face")
+        sketch_face.rotate(revAxisP, -revAxisV, bendA)
+        #Part.show(sketch_face,"Rsketch_face") 
+        TopFace = smCutFace(sketch_face, resultSolid) 
+        #Part.show(TopFace,"TopFace") 
+  
+        #To get top face normal, flatsolid
+        normal = TopFace.normalAt(0,0)
+        Flatface = sketch_face.common(TopFace)
+        BalanceFace = sketch_face.cut(Flatface)
+        #Part.show(BalanceFace,"BalanceFace")
+        Flatsolid = Flatface.extrude(normal * -thk)
+        #Part.show(Flatsolid,"Flatsolid")
+        solidlist.append(Flatsolid)
+
+  #To get relief Solid fused
+  if len(solidlist) > 1 :
+    SMSolid = solidlist[0].multiFuse(solidlist[1:])
+    #Part.show(SMSolid,"SMSolid") 
+    SMSolid = SMSolid.removeSplitter()
+  else :
+   SMSolid = solidlist[0]
+  #Part.show(SMSolid,"SMSolid")
+  resultSolid = resultSolid.cut(SMSolid)
+
+  Gui.ActiveDocument.getObject(MainObject.Name).Visibility = False
+  Gui.ActiveDocument.getObject(sketch.Name).Visibility = False
+  return resultSolid
+
+class SMSketchOnSheet:
+  def __init__(self, obj):
+    '''"Add Sketch On Sheet metal" '''
+    selobj = Gui.Selection.getSelectionEx()
+    
+    obj.addProperty("App::PropertyLinkSub", "baseObject", "Parameters", "Base object").baseObject = (selobj[0].Object, selobj[0].SubElementNames)
+    obj.addProperty("App::PropertyLink","Sketch","Parameters","Sketch on Sheetmetal").Sketch = selobj[1].Object
+    obj.addProperty("App::PropertyFloatConstraint","kfactor","Parameters","Gap from left side").kfactor = (0.5,0.0,1.0,0.01)
+    obj.Proxy = self
+
+  def execute(self, fp):
+    '''"Print a short message when doing a recomputation, this method is mandatory" '''
+
+    s = smSketchOnSheetMetal(kfactor = fp.kfactor, sketch = fp.Sketch, selFaceNames = fp.baseObject[1], MainObject = fp.baseObject[0])
+    fp.Shape = s
+
+class SMSketchOnSheetVP:
+  "A View provider that nests children objects under the created one"
+      
+  def __init__(self, obj):
+    obj.Proxy = self
+    self.Object = obj.Object
+      
+  def attach(self, obj):
+    self.Object = obj.Object
+    return
+
+  def updateData(self, fp, prop):
+    return
+
+  def getDisplayModes(self,obj):
+    modes=[]
+    return modes
+
+  def setDisplayMode(self,mode):
+    return mode
+
+  def onChanged(self, vp, prop):
+    return
+
+  def __getstate__(self):
+    #        return {'ObjectName' : self.Object.Name}
+    return None
+
+  def __setstate__(self,state):
+    if state is not None:
+      import FreeCAD
+      doc = FreeCAD.ActiveDocument #crap
+      self.Object = doc.getObject(state['ObjectName'])
+
+  def claimChildren(self):
+    objs = []
+    if hasattr(self.Object,"baseObject"):
+      objs.append(self.Object.baseObject[0])
+      objs.append(self.Object.Sketch)
+    return objs
+ 
+  def getIcon(self):
+    return os.path.join( iconPath , 'SketchOnSheet.svg')
+
+class SMSketchOnSheetPDVP:
+  "A View provider that nests children objects under the created one"
+      
+  def __init__(self, obj):
+    obj.Proxy = self
+    self.Object = obj.Object
+      
+  def attach(self, obj):
+    self.Object = obj.Object
+    return
+
+  def updateData(self, fp, prop):
+    return
+
+  def getDisplayModes(self,obj):
+    modes=[]
+    return modes
+
+  def setDisplayMode(self,mode):
+    return mode
+
+  def onChanged(self, vp, prop):
+    return
+
+  def __getstate__(self):
+    #        return {'ObjectName' : self.Object.Name}
+    return None
+
+  def __setstate__(self,state):
+    if state is not None:
+      import FreeCAD
+      doc = FreeCAD.ActiveDocument #crap
+      self.Object = doc.getObject(state['ObjectName'])
+
+  def claimChildren(self):
+    objs = []
+    if hasattr(self.Object,"Sketch"):
+      objs.append(self.Object.Sketch)
+    return objs
+ 
+  def getIcon(self):
+    return os.path.join( iconPath , 'SketchOnSheet.svg')
+
+class AddSketchOnSheetCommandClass():
+  """Add Sketch On Sheet metal command"""
+
+  def GetResources(self):
+    return {'Pixmap'  : os.path.join( iconPath , 'SketchOnSheet.svg'), # the name of a svg file available in the resources
+            'MenuText': QtCore.QT_TRANSLATE_NOOP('SheetMetal','Sketch On Sheet metal'),
+            'ToolTip' : QtCore.QT_TRANSLATE_NOOP('SheetMetal','Sketch On Sheet metal')}
+ 
+  def Activated(self):
+    doc = FreeCAD.ActiveDocument
+    view = Gui.ActiveDocument.ActiveView
+    activeBody = None
+    selobj = Gui.Selection.getSelectionEx()[0].Object
+    if hasattr(view,'getActiveObject'):
+      activeBody = view.getActiveObject('pdbody')
+    if not smIsOperationLegal(activeBody, selobj):
+        return
+    doc.openTransaction("SketchOnSheet")
+    if activeBody is None or not smIsPartDesign(selobj):
+      a = doc.addObject("Part::FeaturePython","SketchOnSheet")
+      SMSketchOnSheet(a)
+      SMSketchOnSheetVP(a.ViewObject)
+    else:
+      #FreeCAD.Console.PrintLog("found active body: " + activeBody.Name)
+      a = doc.addObject("PartDesign::FeaturePython","SketchOnSheet")
+      SMSketchOnSheet(a)
+      SMSketchOnSheetPDVP(a.ViewObject)
+      activeBody.addObject(a)
+    doc.recompute()
+    doc.commitTransaction()
+    return
+   
+  def IsActive(self):
+    if len(Gui.Selection.getSelection()) < 2 :
+      return False
+#    selobj = Gui.Selection.getSelection()[1]
+#    if str(type(selobj)) != "<type 'Sketcher.SketchObject'>" :
+#      return False
+    return True
+
+Gui.addCommand('SMSketchOnSheet',AddSketchOnSheetCommandClass())

From 10edf89c0f660a896e6eb297dfa32c8d1c21204d Mon Sep 17 00:00:00 2001
From: jaisekjames <44542605+jaisekjames@users.noreply.github.com>
Date: Sat, 28 Nov 2020 12:02:04 +0530
Subject: [PATCH 2/5] Update InitGui.py

---
 InitGui.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/InitGui.py b/InitGui.py
index ea313e4..2c2082e 100644
--- a/InitGui.py
+++ b/InitGui.py
@@ -58,8 +58,9 @@ def Initialize(self):
         import SheetMetalRelief
         import SheetMetalJunction
         import SheetMetalBend
+        SketchOnSheetMetalCmd
         import os.path
-        self.list = ["SMBase", "SMMakeWall", "SMExtrudeFace", "SMFoldWall", "SMUnfold", "SMMakeRelief", "SMMakeJunction", "SMMakeBend"] # A list of command names created in the line above
+        self.list = ["SMBase", "SMMakeWall", "SMExtrudeFace", "SMFoldWall", "SMUnfold", "SMMakeRelief", "SMMakeJunction", "SMMakeBend", "SMSketchOnSheet"] # A list of command names created in the line above
         if engineering_mode_enabled(): 
             self.list.insert(self.list.index("SMUnfold") + 1,"SMUnfoldUnattended")
         self.appendToolbar("Sheet Metal",self.list) # creates a new toolbar with your commands

From a8e2217adc027a90f290b4381d2c65ce8e11e9ec Mon Sep 17 00:00:00 2001
From: jaisekjames <44542605+jaisekjames@users.noreply.github.com>
Date: Sat, 28 Nov 2020 12:05:07 +0530
Subject: [PATCH 3/5] icon

---
 Resources/icons/SketchOnSheet.svg | 600 ++++++++++++++++++++++++++++++
 1 file changed, 600 insertions(+)
 create mode 100644 Resources/icons/SketchOnSheet.svg

diff --git a/Resources/icons/SketchOnSheet.svg b/Resources/icons/SketchOnSheet.svg
new file mode 100644
index 0000000..d01564b
--- /dev/null
+++ b/Resources/icons/SketchOnSheet.svg
@@ -0,0 +1,600 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.2" width="18.33mm" height="18.33mm" viewBox="0 0 1833 1833" preserveAspectRatio="xMidYMid" fill-rule="evenodd" stroke-width="28.222" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg" xmlns:ooo="http://xml.openoffice.org/svg/export" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:presentation="http://sun.com/xmlns/staroffice/presentation" xmlns:smil="http://www.w3.org/2001/SMIL20/" xmlns:anim="urn:oasis:names:tc:opendocument:xmlns:animation:1.0" xml:space="preserve">
+ <defs class="ClipPathGroup">
+  <clipPath id="presentation_clip_path" clipPathUnits="userSpaceOnUse">
+   <rect x="0" y="0" width="1833" height="1833"/>
+  </clipPath>
+  <clipPath id="presentation_clip_path_shrink" clipPathUnits="userSpaceOnUse">
+   <rect x="1" y="1" width="1830" height="1830"/>
+  </clipPath>
+ </defs>
+ <defs class="TextShapeIndex">
+  <g ooo:slide="id1" ooo:id-list="id3 id4 id5 id6 id7 id8 id9 id10 id11 id12 id13 id14 id15 id16 id17 id18 id19 id20 id21 id22 id23 id24 id25 id26 id27 id28 id29 id30 id31 id32 id33 id34 id35 id36 id37 id38 id39 id40 id41 id42 id43 id44 id45 id46 id47 id48 id49 id50 id51 id52 id53 id54 id55 id56 id57 id58 id59 id60 id61 id62 id63 id64 id65 id66 id67 id68 id69 id70 id71 id72 id73 id74 id75 id76 id77 id78 id79 id80 id81 id82 id83 id84 id85 id86 id87 id88 id89 id90 id91"/>
+ </defs>
+ <defs class="EmbeddedBulletChars">
+  <g id="bullet-char-template-57356" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M 580,1141 L 1163,571 580,0 -4,571 580,1141 Z"/>
+  </g>
+  <g id="bullet-char-template-57354" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M 8,1128 L 1137,1128 1137,0 8,0 8,1128 Z"/>
+  </g>
+  <g id="bullet-char-template-10146" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M 174,0 L 602,739 174,1481 1456,739 174,0 Z M 1358,739 L 309,1346 659,739 1358,739 Z"/>
+  </g>
+  <g id="bullet-char-template-10132" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M 2015,739 L 1276,0 717,0 1260,543 174,543 174,936 1260,936 717,1481 1274,1481 2015,739 Z"/>
+  </g>
+  <g id="bullet-char-template-10007" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M 0,-2 C -7,14 -16,27 -25,37 L 356,567 C 262,823 215,952 215,954 215,979 228,992 255,992 264,992 276,990 289,987 310,991 331,999 354,1012 L 381,999 492,748 772,1049 836,1024 860,1049 C 881,1039 901,1025 922,1006 886,937 835,863 770,784 769,783 710,716 594,584 L 774,223 C 774,196 753,168 711,139 L 727,119 C 717,90 699,76 672,76 641,76 570,178 457,381 L 164,-76 C 142,-110 111,-127 72,-127 30,-127 9,-110 8,-76 1,-67 -2,-52 -2,-32 -2,-23 -1,-13 0,-2 Z"/>
+  </g>
+  <g id="bullet-char-template-10004" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M 285,-33 C 182,-33 111,30 74,156 52,228 41,333 41,471 41,549 55,616 82,672 116,743 169,778 240,778 293,778 328,747 346,684 L 369,508 C 377,444 397,411 428,410 L 1163,1116 C 1174,1127 1196,1133 1229,1133 1271,1133 1292,1118 1292,1087 L 1292,965 C 1292,929 1282,901 1262,881 L 442,47 C 390,-6 338,-33 285,-33 Z"/>
+  </g>
+  <g id="bullet-char-template-9679" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M 813,0 C 632,0 489,54 383,161 276,268 223,411 223,592 223,773 276,916 383,1023 489,1130 632,1184 813,1184 992,1184 1136,1130 1245,1023 1353,916 1407,772 1407,592 1407,412 1353,268 1245,161 1136,54 992,0 813,0 Z"/>
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+  </g>
+  <g id="bullet-char-template-8211" transform="scale(0.00048828125,-0.00048828125)">
+   <path d="M -4,459 L 1135,459 1135,606 -4,606 -4,459 Z"/>
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+       </g>
+      </g>
+      <g class="com.sun.star.drawing.ClosedBezierShape">
+       <g id="id91">
+        <rect class="BoundingBox" stroke="none" fill="none" x="502" y="649" width="105" height="32"/>
+        <path fill="rgb(233,34,34)" stroke="none" d="M 535,652 C 552,655 570,661 589,670 594,673 600,676 606,680 L 503,650 C 513,649 524,650 535,652 Z"/>
+       </g>
+      </g>
+     </g>
+    </g>
+   </g>
+  </g>
+ </g>
+</svg>
\ No newline at end of file

From 540226dc2796e270713a444fb2a9c2195f18b028 Mon Sep 17 00:00:00 2001
From: luz paz <luzpaz@users.noreply.github.com>
Date: Sat, 28 Nov 2020 06:02:09 -0500
Subject: [PATCH 4/5] Added missing import

Still doesn't fix the issue in https://github.com/shaise/FreeCAD_SheetMetal/pull/146#issuecomment-735216604
---
 InitGui.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/InitGui.py b/InitGui.py
index 2c2082e..e40d7b1 100644
--- a/InitGui.py
+++ b/InitGui.py
@@ -58,7 +58,7 @@ def Initialize(self):
         import SheetMetalRelief
         import SheetMetalJunction
         import SheetMetalBend
-        SketchOnSheetMetalCmd
+        import SketchOnSheetMetalCmd
         import os.path
         self.list = ["SMBase", "SMMakeWall", "SMExtrudeFace", "SMFoldWall", "SMUnfold", "SMMakeRelief", "SMMakeJunction", "SMMakeBend", "SMSketchOnSheet"] # A list of command names created in the line above
         if engineering_mode_enabled(): 

From 262fd0c5089458ff5cc26f79ebf07c33407fadbc Mon Sep 17 00:00:00 2001
From: jaisekjames <44542605+jaisekjames@users.noreply.github.com>
Date: Sat, 28 Nov 2020 18:39:10 +0530
Subject: [PATCH 5/5] white spaces

---
 SketchOnSheetMetalCmd.py | 62 +++++++++++++++++++---------------------
 1 file changed, 30 insertions(+), 32 deletions(-)

diff --git a/SketchOnSheetMetalCmd.py b/SketchOnSheetMetalCmd.py
index fad61ce..900650f 100644
--- a/SketchOnSheetMetalCmd.py
+++ b/SketchOnSheetMetalCmd.py
@@ -45,16 +45,16 @@ def smBelongToBody(item, body):
         if obj.Name == item.Name:
             return True
     return False
-    
+
 def smIsPartDesign(obj):
     return str(obj).find("<PartDesign::") == 0
-        
+
 def smIsOperationLegal(body, selobj):
     #FreeCAD.Console.PrintLog(str(selobj) + " " + str(body) + " " + str(smBelongToBody(selobj, body)) + "\n")
     if smIsPartDesign(selobj) and not smBelongToBody(selobj, body):
         smWarnDialog("The selected geometry does not belong to the active Body.\nPlease make the container of this item active by\ndouble clicking on it.")
         return False
-    return True    
+    return True
 
 def smFace(sel_item, obj) :
   # find face if Edge Selected
@@ -68,7 +68,6 @@ def smFace(sel_item, obj) :
     selFace = sel_item
   return selFace
 
-
 def smthk(obj, foldface) :
   normal = foldface.normalAt(0,0)
   theVol = obj.Volume
@@ -149,8 +148,7 @@ def smSketchOnSheetMetal(kfactor = 0.5, sketch = '', flipped = False, selFaceNam
   resultSolid = MainObject.Shape.copy()
   selElement = resultSolid.getElement(selFaceNames[0])
   LargeFace = smFace(selElement, resultSolid)
-  sketch_face = Part.makeFace(sketch.Shape.Wires,"Part::FaceMakerBullseye" )
-
+  sketch_face = Part.makeFace(sketch.Shape.Wires,"Part::FaceMakerBullseye")
 
   #To get thk of sheet, top face normal
   thk = smthk(resultSolid, LargeFace)
@@ -159,7 +157,7 @@ def smSketchOnSheetMetal(kfactor = 0.5, sketch = '', flipped = False, selFaceNam
   #To get top face normal, flatsolid
   solidlist = []
   normal = LargeFace.normalAt(0,0)
-  #To check face direction 
+  #To check face direction
   coeff = normal.dot(sketch_face.Faces[0].normalAt(0,0))
   if coeff < 0 :
     sketch_face.reverse()
@@ -172,35 +170,35 @@ def smSketchOnSheetMetal(kfactor = 0.5, sketch = '', flipped = False, selFaceNam
 
   if BalanceFaces.Faces :
     for BalanceFace in BalanceFaces.Faces :
-      #Part.show(BalanceFace,"BalanceFace") 
+      #Part.show(BalanceFace,"BalanceFace")
       TopFace = LargeFace
-      #Part.show(TopFace,"TopFace") 
+      #Part.show(TopFace,"TopFace")
       #flipped = False
       while BalanceFace.Faces :
         BendEdge = smGetEdge(BalanceFace, TopFace)
-        #Part.show(BendEdge,"BendEdge") 
+        #Part.show(BendEdge,"BendEdge")
         facelist = resultSolid.ancestorsOfType(BendEdge, Part.Face)
-  
+
         #To get bend radius, bend angle
         for cylface in facelist :
           if issubclass(type(cylface.Surface),Part.Cylinder) :
             break
         if not(issubclass(type(cylface.Surface),Part.Cylinder)) :
           break
-        #Part.show(cylface,"cylface") 
+        #Part.show(cylface,"cylface")
         for planeface in facelist :
           if issubclass(type(planeface.Surface),Part.Plane) :
             break
-        #Part.show(planeface,"planeface")       
+        #Part.show(planeface,"planeface")
         normal = planeface.normalAt(0,0)
         revAxisV = cylface.Surface.Axis
         revAxisP = cylface.Surface.Center
         bendA = bendAngle(cylface, revAxisP)
-        #print([bendA, revAxisV, revAxisP, cylface.Orientation]) 
+        #print([bendA, revAxisV, revAxisP, cylface.Orientation])
 
         #To check bend direction
         offsetface = cylface.makeOffsetShape(-thk, 0.0, fill = False)
-        #Part.show(offsetface,"offsetface") 
+        #Part.show(offsetface,"offsetface")
         if offsetface.Area < cylface.Area :
           bendR = cylface.Surface.Radius - thk
           flipped = True
@@ -212,7 +210,7 @@ def smSketchOnSheetMetal(kfactor = 0.5, sketch = '', flipped = False, selFaceNam
         unfoldLength = ( bendR + kfactor * thk ) * abs(bendA) * math.pi / 180.0
         neturalRadius =  ( bendR + kfactor * thk )
         #print([unfoldLength,neturalRadius])
-  
+
         #To get faceNormal, bend face
         faceNormal = normal.cross(revAxisV).normalize()
         #print(faceNormal)
@@ -220,20 +218,20 @@ def smSketchOnSheetMetal(kfactor = 0.5, sketch = '', flipped = False, selFaceNam
           offsetSolid = cylface.makeOffsetShape(bendR/2.0, 0.0, fill = True)
         else:
           offsetSolid = cylface.makeOffsetShape(-bendR/2.0, 0.0, fill = True)
-        #Part.show(offsetSolid,"offsetSolid") 
+        #Part.show(offsetSolid,"offsetSolid")
         tool = BendEdge.copy()
         FaceArea = tool.extrude(faceNormal * -unfoldLength )
-        #Part.show(FaceArea,"FaceArea") 
-        #Part.show(BalanceFace,"BalanceFace") 
+        #Part.show(FaceArea,"FaceArea")
+        #Part.show(BalanceFace,"BalanceFace")
         SolidFace = offsetSolid.common(FaceArea)
-        #Part.show(BendSolidFace,"BendSolidFace") 
+        #Part.show(BendSolidFace,"BendSolidFace")
         if not(SolidFace.Faces):
           faceNormal = faceNormal * -1
           FaceArea = tool.extrude(faceNormal * -unfoldLength )
         BendSolidFace = BalanceFace.common(FaceArea)
         #Part.show(FaceArea,"FaceArea")
         #Part.show(BendSolidFace,"BendSolidFace")
-        #print([bendR, bendA, revAxisV, revAxisP, normal, flipped, BendSolidFace.Faces[0].normalAt(0,0)]) 
+        #print([bendR, bendA, revAxisV, revAxisP, normal, flipped, BendSolidFace.Faces[0].normalAt(0,0)])
     
         bendsolid = SheetMetalBendSolid.BendSolid(BendSolidFace.Faces[0], BendEdge, bendR, thk, neturalRadius, revAxisV, flipped)
         #Part.show(bendsolid,"bendsolid")
@@ -247,10 +245,10 @@ def smSketchOnSheetMetal(kfactor = 0.5, sketch = '', flipped = False, selFaceNam
         sketch_face.translate(faceNormal * unfoldLength)
         #Part.show(sketch_face,"sketch_face")
         sketch_face.rotate(revAxisP, -revAxisV, bendA)
-        #Part.show(sketch_face,"Rsketch_face") 
-        TopFace = smCutFace(sketch_face, resultSolid) 
+        #Part.show(sketch_face,"Rsketch_face")
+        TopFace = smCutFace(sketch_face, resultSolid)
         #Part.show(TopFace,"TopFace") 
-  
+
         #To get top face normal, flatsolid
         normal = TopFace.normalAt(0,0)
         Flatface = sketch_face.common(TopFace)
@@ -278,7 +276,7 @@ class SMSketchOnSheet:
   def __init__(self, obj):
     '''"Add Sketch On Sheet metal" '''
     selobj = Gui.Selection.getSelectionEx()
-    
+
     obj.addProperty("App::PropertyLinkSub", "baseObject", "Parameters", "Base object").baseObject = (selobj[0].Object, selobj[0].SubElementNames)
     obj.addProperty("App::PropertyLink","Sketch","Parameters","Sketch on Sheetmetal").Sketch = selobj[1].Object
     obj.addProperty("App::PropertyFloatConstraint","kfactor","Parameters","Gap from left side").kfactor = (0.5,0.0,1.0,0.01)
@@ -292,11 +290,11 @@ def execute(self, fp):
 
 class SMSketchOnSheetVP:
   "A View provider that nests children objects under the created one"
-      
+
   def __init__(self, obj):
     obj.Proxy = self
     self.Object = obj.Object
-      
+
   def attach(self, obj):
     self.Object = obj.Object
     return
@@ -336,11 +334,11 @@ def getIcon(self):
 
 class SMSketchOnSheetPDVP:
   "A View provider that nests children objects under the created one"
-      
+
   def __init__(self, obj):
     obj.Proxy = self
     self.Object = obj.Object
-      
+
   def attach(self, obj):
     self.Object = obj.Object
     return
@@ -373,7 +371,7 @@ def claimChildren(self):
     if hasattr(self.Object,"Sketch"):
       objs.append(self.Object.Sketch)
     return objs
- 
+
   def getIcon(self):
     return os.path.join( iconPath , 'SketchOnSheet.svg')
 
@@ -384,7 +382,7 @@ def GetResources(self):
     return {'Pixmap'  : os.path.join( iconPath , 'SketchOnSheet.svg'), # the name of a svg file available in the resources
             'MenuText': QtCore.QT_TRANSLATE_NOOP('SheetMetal','Sketch On Sheet metal'),
             'ToolTip' : QtCore.QT_TRANSLATE_NOOP('SheetMetal','Sketch On Sheet metal')}
- 
+
   def Activated(self):
     doc = FreeCAD.ActiveDocument
     view = Gui.ActiveDocument.ActiveView
@@ -408,7 +406,7 @@ def Activated(self):
     doc.recompute()
     doc.commitTransaction()
     return
-   
+
   def IsActive(self):
     if len(Gui.Selection.getSelection()) < 2 :
       return False