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create/src/Mod/Arch/ArchCurtainWall.py
2021-09-28 10:29:45 -05:00

617 lines
27 KiB
Python

# -*- coding: utf8 -*-
#***************************************************************************
#* Copyright (c) 2020 Yorik van Havre <yorik@uncreated.net> *
#* *
#* 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 *
#* *
#***************************************************************************
__title__ = "FreeCAD Arch Curtain Wall"
__author__ = "Yorik van Havre"
__url__ = "https://www.freecadweb.org"
import math
import FreeCAD
import ArchComponent
import ArchCommands
import DraftVecUtils
if FreeCAD.GuiUp:
import FreeCADGui
from DraftTools import translate
from PySide.QtCore import QT_TRANSLATE_NOOP
else:
# \cond
def translate(ctxt,txt):
return txt
def QT_TRANSLATE_NOOP(ctxt,txt):
return txt
# \endcond
ANGLETOLERANCE = 0.67 # vectors with angles below this are considered going in same dir
## @package ArchCurtainWall
# \ingroup ARCH
# \brief The Curtain Wall object and tools
#
# This module provides tools to build Curtain wall objects.
"""
Curtain wall tool
Abstract: Curtain walls need a surface to work on (base).
They then divide each face of that surface into quads,
using the face parameters grid.
The vertical lines can then receive one type of profile
(vertical mullions), the horizontal ones another
(horizontal mullions), and the quads a third (panels).
We then have two cases, depending on each quad: Either the
four corners of each quad are coplanar, in which case the
panel filling is rectangular, or they don't, in which case
the facet is triangulated and receives a third mullion
(diagonal mullion).
"""
def makeCurtainWall(baseobj=None,name="Curtain Wall"):
"""
makeCurtainWall([baseobj]): Creates a curtain wall in the active document
"""
if not FreeCAD.ActiveDocument:
FreeCAD.Console.PrintError("No active document. Aborting\n")
return
obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython","CurtainWall")
obj.Label = translate("Arch","Curtain Wall")
CurtainWall(obj)
if FreeCAD.GuiUp:
ViewProviderCurtainWall(obj.ViewObject)
if baseobj:
obj.Base = baseobj
if FreeCAD.GuiUp:
baseobj.ViewObject.hide()
return obj
class CommandArchCurtainWall:
"the Arch Curtain Wall command definition"
def GetResources(self):
return {'Pixmap' : 'Arch_CurtainWall',
'MenuText': QT_TRANSLATE_NOOP("Arch_CurtainWall","Curtain Wall"),
'Accel': "C, W",
'ToolTip': QT_TRANSLATE_NOOP("Arch_CurtainWall","Creates a curtain wall object from selected line or from scratch")}
def IsActive(self):
return not FreeCAD.ActiveDocument is None
def Activated(self):
sel = FreeCADGui.Selection.getSelection()
if len(sel) > 1:
FreeCAD.Console.PrintError(translate("Arch","Please select only one base object or none")+"\n")
elif len(sel) == 1:
# build on selection
FreeCADGui.Control.closeDialog()
FreeCAD.ActiveDocument.openTransaction(translate("Arch","Create Curtain Wall"))
FreeCADGui.addModule("Draft")
FreeCADGui.addModule("Arch")
FreeCADGui.doCommand("obj = Arch.makeCurtainWall(FreeCAD.ActiveDocument."+FreeCADGui.Selection.getSelection()[0].Name+")")
FreeCADGui.doCommand("Draft.autogroup(obj)")
FreeCAD.ActiveDocument.commitTransaction()
FreeCAD.ActiveDocument.recompute()
else:
# interactive line drawing
self.points = []
if hasattr(FreeCAD,"DraftWorkingPlane"):
FreeCAD.DraftWorkingPlane.setup()
if hasattr(FreeCADGui,"Snapper"):
FreeCADGui.Snapper.getPoint(callback=self.getPoint)
def getPoint(self,point=None,obj=None):
"""Callback for clicks during interactive mode"""
if point is None:
# cancelled
return
self.points.append(point)
if len(self.points) == 1:
FreeCADGui.Snapper.getPoint(last=self.points[0],callback=self.getPoint)
elif len(self.points) == 2:
FreeCADGui.Control.closeDialog()
FreeCAD.ActiveDocument.openTransaction(translate("Arch","Create Curtain Wall"))
FreeCADGui.addModule("Draft")
FreeCADGui.addModule("Arch")
FreeCADGui.doCommand("base = Draft.makeLine(FreeCAD."+str(self.points[0])+",FreeCAD."+str(self.points[1])+")")
FreeCADGui.doCommand("obj = Arch.makeCurtainWall(base)")
FreeCADGui.doCommand("Draft.autogroup(obj)")
FreeCAD.ActiveDocument.commitTransaction()
FreeCAD.ActiveDocument.recompute()
class CurtainWall(ArchComponent.Component):
"The curtain wall object"
def __init__(self,obj):
ArchComponent.Component.__init__(self,obj)
self.setProperties(obj)
obj.IfcType = "Curtain Wall"
def setProperties(self,obj):
pl = obj.PropertiesList
vsize = 50
hsize = 50
p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
if not "Host" in pl:
obj.addProperty("App::PropertyLink","Host","CurtainWall",QT_TRANSLATE_NOOP("App::Property","An optional host object for this curtain wall"))
if not "Height" in pl:
obj.addProperty("App::PropertyLength","Height","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The height of the curtain wall, if based on an edge"))
obj.Height = p.GetFloat("WallHeight",3000)
if not "VerticalMullionNumber" in pl:
obj.addProperty("App::PropertyInteger","VerticalMullionNumber","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The number of vertical mullions"))
obj.setEditorMode("VerticalMullionNumber",1)
if not "VerticalMullionAlignment" in pl:
obj.addProperty("App::PropertyBool","VerticalMullionAlignment","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","If the profile of the vertical mullions get aligned with the surface or not"))
if not "VerticalSections" in pl:
obj.addProperty("App::PropertyInteger","VerticalSections","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The number of vertical sections of this curtain wall"))
obj.VerticalSections = 1
if "VerticalMullionSize" in pl:
# obsolete
vsize = obj.VerticalMullionSize.Value
obj.removeProperty("VerticalMullionSize")
if not "VerticalMullionHeight" in pl:
obj.addProperty("App::PropertyLength","VerticalMullionHeight","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The height of the vertical mullions profile, if no profile is used"))
obj.VerticalMullionHeight = vsize
if not "VerticalMullionWidth" in pl:
obj.addProperty("App::PropertyLength","VerticalMullionWidth","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The width of the vertical mullions profile, if no profile is used"))
obj.VerticalMullionWidth = vsize
if not "VerticalMullionProfile" in pl:
obj.addProperty("App::PropertyLink","VerticalMullionProfile","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","A profile for vertical mullions (disables vertical mullion size)"))
if not "HorizontalMullionNumber" in pl:
obj.addProperty("App::PropertyInteger","HorizontalMullionNumber","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The number of horizontal mullions"))
obj.setEditorMode("HorizontalMullionNumber",1)
if not "HorizontalMullionAlignment" in pl:
obj.addProperty("App::PropertyBool","HorizontalMullionAlignment","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","If the profile of the horizontal mullions gets aligned with the surface or not"))
if not "HorizontalSections" in pl:
obj.addProperty("App::PropertyInteger","HorizontalSections","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The number of horizontal sections of this curtain wall"))
obj.HorizontalSections = 1
if "HorizontalMullionSize" in pl:
# obsolete
hsize = obj.HorizontalMullionSize.Value
obj.removeProperty("HorizontalMullionSize")
if not "HorizontalMullionHeight" in pl:
obj.addProperty("App::PropertyLength","HorizontalMullionHeight","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The height of the horizontal mullions profile, if no profile is used"))
obj.HorizontalMullionHeight = hsize
if not "HorizontalMullionWidth" in pl:
obj.addProperty("App::PropertyLength","HorizontalMullionWidth","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The width of the horizontal mullions profile, if no profile is used"))
obj.HorizontalMullionWidth = hsize
if not "HorizontalMullionProfile" in pl:
obj.addProperty("App::PropertyLink","HorizontalMullionProfile","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","A profile for horizontal mullions (disables horizontal mullion size)"))
if not "DiagonalMullionNumber" in pl:
obj.addProperty("App::PropertyInteger","DiagonalMullionNumber","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The number of diagonal mullions"))
obj.setEditorMode("DiagonalMullionNumber",1)
if not "DiagonalMullionSize" in pl:
obj.addProperty("App::PropertyLength","DiagonalMullionSize","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The size of the diagonal mullions, if any, if no profile is used"))
obj.DiagonalMullionSize = 50
if not "DiagonalMullionProfile" in pl:
obj.addProperty("App::PropertyLink","DiagonalMullionProfile","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","A profile for diagonal mullions, if any (disables horizontal mullion size)"))
if not "PanelNumber" in pl:
obj.addProperty("App::PropertyInteger","PanelNumber","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The number of panels"))
obj.setEditorMode("PanelNumber",1)
if not "PanelThickness" in pl:
obj.addProperty("App::PropertyLength","PanelThickness","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The thickness of the panels"))
obj.PanelThickness = 20
if not "SwapHorizontalVertical" in pl:
obj.addProperty("App::PropertyBool","SwapHorizontalVertical","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","Swaps horizontal and vertical lines"))
if not "Refine" in pl:
obj.addProperty("App::PropertyBool","Refine","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","Perform subtractions between components so none overlap"))
if not "CenterProfiles" in pl:
obj.addProperty("App::PropertyBool","CenterProfiles","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","Centers the profile over the edges or not"))
obj.CenterProfiles = True
if not "VerticalDirection" in pl:
obj.addProperty("App::PropertyVector","VerticalDirection","CurtainWall",
QT_TRANSLATE_NOOP("App::Property","The vertical direction reference to be used by this object to deduce vertical/horizontal directions. Keep it close to the actual vertical direction of your curtain wall"))
obj.VerticalDirection = FreeCAD.Vector(0,0,1)
def onDocumentRestored(self,obj):
ArchComponent.Component.onDocumentRestored(self,obj)
self.setProperties(obj)
def onChanged(self,obj,prop):
ArchComponent.Component.onChanged(self,obj,prop)
def execute(self,obj):
if self.clone(obj):
return
import Part,DraftGeomUtils
pl = obj.Placement
# test properties
if not obj.Base:
FreeCAD.Console.PrintLog(obj.Label+": no base\n")
return
if not hasattr(obj.Base,"Shape"):
FreeCAD.Console.PrintLog(obj.Label+": invalid base\n")
return
if obj.VerticalMullionProfile:
if not hasattr(obj.VerticalMullionProfile,"Shape"):
FreeCAD.Console.PrintLog(obj.Label+": invalid vertical mullion profile\n")
return
if obj.HorizontalMullionProfile:
if not hasattr(obj.HorizontalMullionProfile,"Shape"):
FreeCAD.Console.PrintLog(obj.Label+": invalid horizontal mullion profile\n")
return
if obj.DiagonalMullionProfile:
if not hasattr(obj.DiagonalMullionProfile,"Shape"):
FreeCAD.Console.PrintLog(obj.Label+": invalid diagonal mullion profile\n")
return
facets = []
faces = []
if obj.Base.Shape.Faces:
faces = obj.Base.Shape.Faces
elif obj.Height.Value and obj.VerticalDirection.Length:
ext = FreeCAD.Vector(obj.VerticalDirection)
ext.normalize()
ext = ext.multiply(obj.Height.Value)
faces = [edge.extrude(ext) for edge in obj.Base.Shape.Edges]
if not faces:
FreeCAD.Console.PrintLog(obj.Label+": unable to build base faces\n")
return
# subdivide the faces into quads
for face in faces:
fp = face.ParameterRange
# guessing horizontal/vertical directions
vdir = obj.VerticalDirection
if not vdir.Length:
vdir = FreeCAD.Vector(0,0,1)
vdir.normalize()
basevector = face.valueAt(fp[1],fp[3]).sub(face.valueAt(fp[0],fp[2]))
a = basevector.getAngle(vdir)
if (a <= math.pi/2+ANGLETOLERANCE) and (a >= math.pi/2-ANGLETOLERANCE):
facedir = True
vertsec = obj.VerticalSections
horizsec = obj.HorizontalSections
else:
facedir = False
vertsec = obj.HorizontalSections
horizsec = obj.VerticalSections
hstep = (fp[1]-fp[0])
if vertsec:
hstep = hstep/vertsec
vstep = (fp[3]-fp[2])
if horizsec:
vstep = vstep/horizsec
# construct facets
for i in range(vertsec or 1):
for j in range(horizsec or 1):
p0 = face.valueAt(fp[0]+i*hstep,fp[2]+j*vstep)
p1 = face.valueAt(fp[0]+(i+1)*hstep,fp[2]+j*vstep)
p2 = face.valueAt(fp[0]+(i+1)*hstep,fp[2]+(j+1)*vstep)
p3 = face.valueAt(fp[0]+i*hstep,fp[2]+(j+1)*vstep)
facet = Part.Face(Part.makePolygon([p0,p1,p2,p3,p0]))
facets.append(facet)
if not facets:
FreeCAD.Console.PrintLog(obj.Label+": failed to subdivide shape\n")
return
baseshape = Part.makeShell(facets)
# make edge/normal relation table
edgetable = {}
for face in baseshape.Faces:
for edge in face.Edges:
ec = edge.hashCode()
if ec in edgetable:
edgetable[ec].append(face)
else:
edgetable[ec] = [face]
self.edgenormals = {}
for ec,faces in edgetable.items():
if len(faces) == 1:
self.edgenormals[ec] = faces[0].normalAt(0,0)
else:
n = faces[0].normalAt(0,0).add(faces[1].normalAt(0,0))
if n.Length > 0.001:
n.normalize()
else:
# adjacent faces have same normals
n = faces[0].normalAt(0,0)
self.edgenormals[ec] = n
# sort edges between vertical/horizontal
hedges = []
vedges = []
for edge in baseshape.Edges:
v = edge.Vertexes[-1].Point.sub(edge.Vertexes[0].Point)
a = v.getAngle(vdir)
if (a <= math.pi/2+ANGLETOLERANCE) and (a >= math.pi/2-ANGLETOLERANCE):
hedges.append(edge)
else:
vedges.append(edge)
# construct vertical mullions
vmullions = []
vprofile = self.getMullionProfile(obj,"Vertical")
if vprofile and vertsec:
for vedge in vedges:
vn = self.edgenormals[vedge.hashCode()]
if (vn.x != 0) or (vn.y != 0):
avn = FreeCAD.Vector(vn.x,vn.y,0)
rot = FreeCAD.Rotation(FreeCAD.Vector(0,-1,0),avn)
else:
rot = FreeCAD.Rotation()
if obj.VerticalMullionAlignment:
ev = vedge.Vertexes[-1].Point.sub(vedge.Vertexes[0].Point)
rot = FreeCAD.Rotation(FreeCAD.Vector(1,0,0),ev).multiply(rot)
vmullions.append(self.makeMullion(vedge,vprofile,rot,obj.CenterProfiles))
# construct horizontal mullions
hmullions = []
hprofile = self.getMullionProfile(obj,"Horizontal")
if hprofile and horizsec:
for hedge in hedges:
rot = FreeCAD.Rotation(FreeCAD.Vector(0,1,0),-90)
vn = self.edgenormals[hedge.hashCode()]
if (vn.x != 0) or (vn.y != 0):
avn = FreeCAD.Vector(vn.x,vn.y,0)
rot = FreeCAD.Rotation(FreeCAD.Vector(0,-1,0),avn).multiply(rot)
if obj.HorizontalMullionAlignment:
rot = FreeCAD.Rotation(avn,vn).multiply(rot)
hmullions.append(self.makeMullion(hedge,hprofile,rot,obj.CenterProfiles))
# construct panels
panels = []
dedges = []
if obj.PanelThickness.Value:
for face in baseshape.Faces:
verts = [v.Point for v in face.OuterWire.OrderedVertexes]
if len(verts) == 4:
if DraftGeomUtils.isPlanar(verts):
panel = self.makePanel(verts,obj.PanelThickness.Value)
panels.append(panel)
else:
verts1 = [verts[0],verts[1],verts[2]]
panel = self.makePanel(verts1,obj.PanelThickness.Value)
panels.append(panel)
verts2 = [verts[0],verts[2],verts[3]]
panel = self.makePanel(verts2,obj.PanelThickness.Value)
panels.append(panel)
dedges.append(Part.makeLine(verts[0],verts[2]))
# construct diagonal mullions
dmullions = []
if dedges:
n = (dedges[0].Vertexes[-1].Point.sub(dedges[0].Point))
dprofile = self.getMullionProfile(obj,"Diagonal")
if dprofile:
for dedge in dedges:
rot = FreeCAD.Rotation(FreeCAD.Vector(0,0,1),dedge.Vertexes[-1].Point.sub(dedge.Vertexes[0].Point))
dmullions.append(self.makeMullion(dedge,dprofile,rot,obj.CenterProfiles))
# perform subtractions
if obj.Refine:
subvmullion = None
subhmullion = None
subdmullion = None
if vmullions:
subvmullion = vmullions[0].copy()
for m in vmullions[1:]:
subvmullion = subvmullion.fuse(m)
if hmullions:
subhmullion = hmullions[0].copy()
for m in hmullions[1:]:
subhmullion = subhmullion.fuse(m)
if dmullions:
subdmullion = dmullions[0].copy()
for m in dmullions[1:]:
subdmullion = subdmullion.fuse(m)
if subvmullion:
hmullions = [m.cut(subvmullion) for m in hmullions]
if subhmullion:
dmullions = [m.cut(subvmullion) for m in dmullions]
dmullions = [m.cut(subhmullion) for m in dmullions]
panels = [m.cut(subvmullion) for m in panels]
panels = [m.cut(subhmullion) for m in panels]
if subdmullion:
panels = [m.cut(subdmullion) for m in panels]
# mount shape
obj.VerticalMullionNumber = len(vmullions)
obj.HorizontalMullionNumber = len(hmullions)
obj.DiagonalMullionNumber = len(dmullions)
obj.PanelNumber = len(panels)
shape = Part.makeCompound(vmullions+hmullions+dmullions+panels)
shape = self.processSubShapes(obj,shape,pl)
self.applyShape(obj,shape,pl)
def makePanel(self,verts,thickness):
"""creates a panel from face points and thickness"""
import Part
panel = Part.Face(Part.makePolygon(verts+[verts[0]]))
n = panel.normalAt(0,0)
n.multiply(thickness)
panel = panel.extrude(n)
return panel
def makeMullion(self,edge,profile,rotation,recenter=False):
"""creates a mullions from an edge and a profile"""
center = FreeCAD.Vector(0,0,0)
if recenter:
if hasattr(profile,"CenterOfMass"):
center = profile.CenterOfMass
elif hasattr(profile,"BoundBox"):
center = profile.BoundBox.Center
p0 = edge.Vertexes[0].Point
p1 = edge.Vertexes[-1].Point
mullion = profile.copy()
if rotation:
mullion = mullion.rotate(center,rotation.Axis,math.degrees(rotation.Angle))
mullion = mullion.translate(p0.sub(center))
mullion = mullion.extrude(p1.sub(p0))
return mullion
def getMullionProfile(self,obj,direction):
"""returns a profile shape already properly oriented, ready for extrude"""
import Part,DraftGeomUtils
prof = getattr(obj,direction+"MullionProfile")
proh = getattr(obj,direction+"MullionHeight").Value
prow = getattr(obj,direction+"MullionWidth").Value
if prof:
profile = prof.Shape.copy()
else:
if (not proh) or (not prow):
return None
profile = Part.Face(Part.makePlane(prow,proh,FreeCAD.Vector(-prow/2,-proh/2,0)))
return profile
def getProjectedLength(self,v,ref):
"""gets a signed length from projecting a vector on another"""
proj = DraftVecUtils.project(v,ref)
if proj.getAngle(ref) < 1:
return proj.Length
else:
return -proj.Length
class ViewProviderCurtainWall(ArchComponent.ViewProviderComponent):
"A View Provider for the CurtainWall object"
def __init__(self,vobj):
ArchComponent.ViewProviderComponent.__init__(self,vobj)
def getIcon(self):
import Arch_rc
return ":/icons/Arch_CurtainWall_Tree.svg"
def updateData(self,obj,prop):
if prop == "Shape":
self.colorize(obj,force=True)
def onChanged(self,vobj,prop):
if (prop in ["DiffuseColor","Transparency"]) and vobj.Object:
self.colorize(vobj.Object)
elif prop == "ShapeColor":
self.colorize(vobj.Object,force=True)
ArchComponent.ViewProviderComponent.onChanged(self,vobj,prop)
def colorize(self,obj,force=False):
"setting different part colors"
if not obj.Shape or not obj.Shape.Solids:
return
basecolor = obj.ViewObject.ShapeColor
basetransparency = obj.ViewObject.Transparency/100.0
panelcolor = ArchCommands.getDefaultColor("WindowGlass")
paneltransparency = 0.7
if hasattr(obj,"Material") and obj.Material and hasattr(obj.Material,"Materials"):
if obj.Material.Names:
if "Frame" in obj.Material.Names:
mat = obj.Material.Materials[obj.Material.Names.index("Frame")]
if ('DiffuseColor' in mat.Material) and ("(" in mat.Material['DiffuseColor']):
basecolor = tuple([float(f) for f in mat.Material['DiffuseColor'].strip("()").split(",")])
if "Glass panel" in obj.Material.Names:
mat = obj.Material.Materials[obj.Material.Names.index("Glass panel")]
if ('DiffuseColor' in mat.Material) and ("(" in mat.Material['DiffuseColor']):
panelcolor = tuple([float(f) for f in mat.Material['DiffuseColor'].strip("()").split(",")])
if ('Transparency' in mat.Material):
paneltransparency = float(mat.Material['Transparency'])/100.0
elif "Solid panel" in obj.Material.Names:
mat = obj.Material.Materials[obj.Material.Names.index("Solid panel")]
if ('DiffuseColor' in mat.Material) and ("(" in mat.Material['DiffuseColor']):
panelcolor = tuple([float(f) for f in mat.Material['DiffuseColor'].strip("()").split(",")])
paneltransparency = 0
basecolor = basecolor[:3]+(basetransparency,)
panelcolor = panelcolor[:3]+(paneltransparency,)
colors = []
nmullions = obj.VerticalMullionNumber + obj.HorizontalMullionNumber + obj.DiagonalMullionNumber
for i,solid in enumerate(obj.Shape.Solids):
for _ in solid.Faces:
if i < nmullions:
colors.append(basecolor)
else:
colors.append(panelcolor)
if self.areDifferentColors(colors,obj.ViewObject.DiffuseColor) or force:
obj.ViewObject.DiffuseColor = colors
if FreeCAD.GuiUp:
FreeCADGui.addCommand('Arch_CurtainWall',CommandArchCurtainWall())