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BimDiff.py
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BimDiff.py
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# ***************************************************************************
# * *
# * Copyright (c) 2019 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 *
# * *
# ***************************************************************************
"""This module contains FreeCAD commands for the BIM workbench"""
import os
import FreeCAD
import Draft
from BimTranslateUtils import *
def QT_TRANSLATE_NOOP(ctx, txt):
return txt # dummy function for the QT translator
class BIM_Diff:
def GetResources(self):
return {
"Pixmap": os.path.join(os.path.dirname(__file__), "icons", "BIM_Diff.svg"),
"MenuText": QT_TRANSLATE_NOOP("BIM_Diff", "IFC Diff"),
"ToolTip": QT_TRANSLATE_NOOP(
"BIM_Diff", "Shows the difference between two IFC-based documents"
),
}
def IsActive(self):
if FreeCAD.ActiveDocument:
return True
else:
return False
def Activated(self):
# you need two documents open, containing BIM objects with same IDs
# make the main doc the active one before running this script!
# what will be compared: IDs, geometry, materials. Everything else is discarded.
MOVE_TOLERANCE = 0.2 # the max allowed move in mm
VOL_TOLERANCE = 250 # the max allowed volume diff in mm^3
import FreeCADGui
from PySide import QtCore, QtGui
documents = FreeCAD.listDocuments()
if len(documents) == 2:
reply = QtGui.QMessageBox.question(
None,
"",
translate(
"BIM",
"The document currently viewed must be your main one. The other contains newer objects that you wish to merge into this one. Make sure only the objects you wish to compare are visible in both. Proceed?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
activedoc = FreeCAD.ActiveDocument
if list(documents.keys())[0] == activedoc.Name:
otherdoc = list(documents.values())[1]
else:
otherdoc = list(documents.values())[0]
# build lists of BIM objects with IFC ID
objswithoutid = [] # let's try to match these later on
activedocids = {} # main document, the original freecad one
for obj in activedoc.Objects:
if hasattr(obj, "IfcData") and obj.ViewObject.Visibility:
if "IfcUID" in obj.IfcData:
activedocids[obj.IfcData["IfcUID"]] = obj
elif obj.isDerivedFrom(
"Part::Feature"
): # discard BuildingParts
objswithoutid.append(obj)
otherdocids = {} # other doc to be merged to the main one
for obj in otherdoc.Objects:
if hasattr(obj, "IfcData") and obj.ViewObject.Visibility:
if "IfcUID" in obj.IfcData:
otherdocids[obj.IfcData["IfcUID"]] = obj
toselect = [] # objects to select when finished
additions = [] # objects added
subtractions = [] # objects subtracted
modified = [] # objects modified
moved = [] # objects moved
matchanged = [] # object is same, but material changed
matchangedghost = (
[]
) # store shapes of objects whose material has changed to print a blue ghost later on
renamed = {} # object label changes
propertieschanged = {} # objects whose IFC properties are different
for id, obj in otherdocids.items():
if id in activedocids:
# this object already exists
mainobj = activedocids[id]
if obj.Label != mainobj.Label:
# object has a different name
renamed[mainobj.Name] = obj.Label
if obj.IfcProperties and (
obj.IfcProperties != mainobj.IfcProperties
):
# properties have changed
propertieschanged[id] = obj.IfcProperties
if hasattr(obj, "Shape") and hasattr(mainobj, "Shape"):
v = abs(obj.Shape.Volume - mainobj.Shape.Volume)
if v < VOL_TOLERANCE:
# identical volume
l = (
obj.Shape.BoundBox.Center.sub(
mainobj.Shape.BoundBox.Center
)
).Length
if l < MOVE_TOLERANCE:
# identical position
if (
abs(
obj.Shape.BoundBox.XMin
- mainobj.Shape.BoundBox.XMin
)
< MOVE_TOLERANCE
and abs(
obj.Shape.BoundBox.YMin
- mainobj.Shape.BoundBox.YMin
)
< MOVE_TOLERANCE
and abs(
obj.Shape.BoundBox.YMin
- mainobj.Shape.BoundBox.YMin
)
< MOVE_TOLERANCE
):
# same boundbox
if (
hasattr(obj, "Material")
and hasattr(mainobj, "Material")
and (
obj.Material
and mainobj.Material
and (
obj.Material.Label
== mainobj.Material.Label
)
)
or (obj.Material == mainobj.Material)
):
# same material names
obj.ViewObject.hide()
else:
print(
"Object",
mainobj.Label,
"material has changed",
)
obj.ViewObject.hide() # we hide these objects since the shape hasn't changed but we keep their shapes
matchangedghost.append(obj.Shape)
matchanged.append(obj)
else:
print(
"Object",
mainobj.Label,
"shape bound box has changed",
)
toselect.append(obj)
modified.append(obj)
else:
print(
"Object",
mainobj.Label,
"position has moved by",
l,
"mm",
)
toselect.append(obj)
moved.append(obj)
else:
print(
"Object",
mainobj.Label,
"shape has changed by",
v,
"mm^3",
)
toselect.append(obj)
modified.append(obj)
else:
print(
"Object",
mainobj.Label,
"one of the objects has no shape",
)
toselect.append(obj)
else:
print("Object", obj.Label, "doesn't exist yet in main doc")
toselect.append(obj)
additions.append(obj)
for id, obj in activedocids.items():
if not id in otherdocids:
if obj.isDerivedFrom(
"Part::Feature"
): # don't count building parts
print(
"Object", obj.Label, "doesn't exist anymore in new doc"
)
subtractions.append(obj)
# try to find our objects without ID
newids = {}
for obj in objswithoutid:
for id, otherobj in otherdocids.items():
if not id in activedocids:
if (
abs(otherobj.Shape.Volume - obj.Shape.Volume)
< VOL_TOLERANCE
):
if (
otherobj.Shape.BoundBox.Center.sub(
obj.Shape.BoundBox.Center
)
).Length < MOVE_TOLERANCE:
if (
abs(
obj.Shape.BoundBox.XMin
- otherobj.Shape.BoundBox.XMin
)
< MOVE_TOLERANCE
and abs(
obj.Shape.BoundBox.YMin
- otherobj.Shape.BoundBox.YMin
)
< MOVE_TOLERANCE
and abs(
obj.Shape.BoundBox.YMin
- otherobj.Shape.BoundBox.YMin
)
< MOVE_TOLERANCE
):
# shapes are identical. It's the same object!
newids[obj.Name] = id
break
else:
print(
"Object",
obj.Label,
"has no ID and wasn't found in the new doc",
)
subtractions.append(obj)
matnames = {} # existing materials
for obj in activedoc.Objects:
if Draft.getType(obj) == "Material":
matnames[obj.Label] = obj
newmats = {} # new materials
for obj in otherdoc.Objects:
if Draft.getType(obj) == "Material":
if not obj.Label in matnames:
print("Material", obj.Label, "doesn't exist in main doc")
toselect.append(obj)
newmats[obj.Label] = obj
if newmats:
group = otherdoc.addObject(
"App::DocumentObjectGroup", "New_materials"
)
for newmat in newmats.values():
group.addObject(newmat)
if toselect:
FreeCAD.setActiveDocument(otherdoc.Name)
FreeCAD.ActiveDocument = FreeCADGui.getDocument(otherdoc.Name)
FreeCADGui.ActiveDocument = FreeCADGui.getDocument(otherdoc.Name)
FreeCADGui.Selection.clearSelection()
for obj in toselect:
FreeCADGui.Selection.addSelection(obj)
if additions:
shape = Part.makeCompound([a.Shape for a in additions])
obj = activedoc.addObject("Part::Feature", "Additions")
obj.Shape = shape
obj.ViewObject.LineWidth = 5
obj.ViewObject.LineColor = (0.0, 1.0, 0.0)
obj.ViewObject.ShapeColor = (0.0, 1.0, 0.0)
obj.ViewObject.Transparency = 60
if subtractions:
shape = Part.makeCompound([s.Shape for s in subtractions])
obj = activedoc.addObject("Part::Feature", "Subtractions")
obj.Shape = shape
obj.ViewObject.LineWidth = 5
obj.ViewObject.LineColor = (1.0, 0.0, 0.0)
obj.ViewObject.ShapeColor = (1.0, 0.0, 0.0)
obj.ViewObject.Transparency = 60
if modified:
shape = Part.makeCompound([m.Shape for m in modified])
obj = activedoc.addObject("Part::Feature", "Modified")
obj.Shape = shape
obj.ViewObject.LineWidth = 5
obj.ViewObject.LineColor = (1.0, 0.5, 0.0)
obj.ViewObject.ShapeColor = (1.0, 0.5, 0.0)
obj.ViewObject.Transparency = 60
if moved:
shape = Part.makeCompound([m.Shape for m in moved])
obj = activedoc.addObject("Part::Feature", "Moved")
obj.Shape = shape
obj.ViewObject.LineWidth = 5
obj.ViewObject.LineColor = (1.0, 1.0, 0.0)
obj.ViewObject.ShapeColor = (1.0, 1.0, 0.0)
obj.ViewObject.Transparency = 60
if matchangedghost:
shape = Part.makeCompound(matchangedghost)
obj = otherdoc.addObject("Part::Feature", "Material_changed")
obj.Shape = shape
obj.ViewObject.LineWidth = 1
obj.ViewObject.LineColor = (0.0, 0.0, 1.0)
obj.ViewObject.ShapeColor = (0.0, 0.0, 1.0)
obj.ViewObject.Transparency = 90
if matchanged:
reply = QtGui.QMessageBox.question(
None,
"",
str(len(matchanged))
+ " "
+ translate(
"BIM",
"objects still have the same shape but have a different material. Do you wish to update them in the main document?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for obj in matchanged:
mat = obj.Material
if mat:
mainobj = activedocids[obj.IfcData["IfcUID"]]
if mainobj.Material:
mainmatlabel = mainobj.Material.Label
else:
mainmatlabel = "None"
if mat.Label in matnames:
# the new material already exists, just change it
print(
"Changing material of",
mainobj.Label,
"from",
mainmatlabel,
"to",
mat.Label,
)
mainobj.Material = matnames[mat.Label]
else:
# copy the material over
newmat = activedoc.addObject(
"App::MaterialObjectPython", "Material"
)
newmat.Label = mat.Label
import ArchMaterial
ArchMaterial._ArchMaterial(newmat)
ArchMaterial._ViewProviderArchMaterial(
newmat.ViewObject
)
newmat.Material = mat.Material
print(
"Changing material of",
mainobj.Label,
"from",
mainmatlabel,
"to",
newmat.Label,
)
mainobj.Material = newmat
matnames[newmat.Label] = newmat
if newids:
reply = QtGui.QMessageBox.question(
None,
"",
str(len(newids))
+ " "
+ translate(
"BIM",
"objects have no IFC ID in the main document, but an identical object with an ID exists in the new document. Transfer these IDs to the original objects?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for name, id in newids.items():
obj = activedoc.getObject(name)
if obj:
print("Transferring new id to object", obj.Label)
a = obj.IfcData
a["IfcUID"] = id
obj.IfcData = a
if renamed:
reply = QtGui.QMessageBox.question(
None,
"",
str(len(renamed))
+ " "
+ translate(
"BIM", "objects had their name changed. Rename them?"
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for name, label in renamed.items():
obj = activedoc.getObject(name)
if obj:
print("Renaming object", obj.Label, "to", label)
obj.Label = label
if propertieschanged:
reply = QtGui.QMessageBox.question(
None,
"",
str(len(propertieschanged))
+ " "
+ translate(
"BIM", "objects had their properties changed. Update?"
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for id, prop in propertieschanged.items():
obj = activedocids[id]
print("Updating properties of ", obj.Label)
obj.IfcProperties = prop
if moved:
reply = QtGui.QMessageBox.question(
None,
"",
str(len(moved))
+ " "
+ translate(
"BIM",
"objects have their location changed. Move them to their new position?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for obj in moved:
mainobj = activedocids[obj.IfcData["IfcUID"]]
otherobj = otherdocids[obj.IfcData["IfcUID"]]
delta = otherobj.Shape.BoundBox.Center.sub(
mainobj.Shape.BoundBox.Center
)
print("Moving object ", mainobj.Label)
Draft.move(mainobj, delta)
reply = QtGui.QMessageBox.question(
None,
"",
translate(
"BIM",
"Do you wish to colorize the objects that have moved in yellow in the other file (to serve as a diff)?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for obj in moved:
otherobj = otherdocids[obj.IfcData["IfcUID"]]
try:
otherobj.ViewObject.LineColor = (1.0, 1.0, 0.0)
otherobj.ViewObject.ShapeColor = (1.0, 1.0, 0.0)
otherobj.ViewObject.Transparency = 60
except AttributeError:
print(otherobj.Label, "cannot be colorized")
if modified:
reply = QtGui.QMessageBox.question(
None,
"",
translate(
"BIM",
"Do you wish to colorize the objects that have been modified in orange in the other file (to serve as a diff)?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for obj in modified:
otherobj = otherdocids[obj.IfcData["IfcUID"]]
try:
otherobj.ViewObject.LineColor = (1.0, 0.5, 0.0)
otherobj.ViewObject.ShapeColor = (1.0, 0.5, 0.0)
otherobj.ViewObject.Transparency = 60
except AttributeError:
print(otherobj.Label, "cannot be colorized")
if subtractions:
reply = QtGui.QMessageBox.question(
None,
"",
str(len(subtractions))
+ " "
+ translate(
"BIM",
"objects don't exist anymore in the new document. Move them to a 'To Delete' group?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
group = activedoc.addObject(
"App::DocumentObjectGroup", "ToDelete"
)
group.Label = "To Delete"
for obj in subtractions:
group.addObject(obj)
reply = QtGui.QMessageBox.question(
None,
"",
translate(
"BIM",
"Do you wish to colorize the objects that have been removed in red in the other file (to serve as a diff)?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for obj in subtractions:
otherobj = otherdoc.addObject("Part::Feature", "Deleted")
otherobj.Shape = obj.Shape
otherobj.ViewObject.LineColor = (1.0, 0.0, 0.0)
otherobj.ViewObject.ShapeColor = (1.0, 0.0, 0.0)
otherobj.ViewObject.Transparency = 60
if additions:
reply = QtGui.QMessageBox.question(
None,
"",
translate(
"BIM",
"Do you wish to colorize the objects that have been added in green in the other file (to serve as a diff)?",
),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No,
)
if reply == QtGui.QMessageBox.Yes:
for obj in additions:
otherobj = otherdocids[obj.IfcData["IfcUID"]]
try:
otherobj.ViewObject.LineColor = (0.0, 1.0, 0.0)
otherobj.ViewObject.ShapeColor = (0.0, 1.0, 0.0)
otherobj.ViewObject.Transparency = 60
except AttributeError:
print(otherobj.Label, "cannot be colorized")
else:
QtGui.QMessageBox.information(
None,
"",
translate(
"BIM",
"You need two documents open to run this tool. One which is your main document, and one that contains new objects that you wish to compare against the existing one. Make sure only the objects you wish to compare in both documents are visible.",
),
)