/
importIFC.py
1080 lines (977 loc) · 42.4 KB
/
importIFC.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#***************************************************************************
#* *
#* Copyright (c) 2011 *
#* 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 *
#* *
#***************************************************************************
import ifcReader, FreeCAD, Arch, Draft, os, sys, time, Part, DraftVecUtils
from DraftTools import translate
__title__="FreeCAD IFC importer"
__author__ = "Yorik van Havre"
__url__ = "http://www.freecadweb.org"
# config
subtractiveTypes = ["IfcOpeningElement"] # elements that must be subtracted from their parents
SCHEMA = "http://www.steptools.com/support/stdev_docs/express/ifc2x3/ifc2x3_tc1.exp"
MAKETEMPFILES = False # if True, shapes are passed from ifcopenshell to freecad through temp files
# end config
if open.__module__ == '__builtin__':
pyopen = open # because we'll redefine open below
def open(filename):
"called when freecad opens a file"
docname = os.path.splitext(os.path.basename(filename))[0]
doc = FreeCAD.newDocument(docname)
doc.Label = decode(docname)
FreeCAD.ActiveDocument = doc
getConfig()
read(filename)
return doc
def insert(filename,docname):
"called when freecad wants to import a file"
try:
doc = FreeCAD.getDocument(docname)
except:
doc = FreeCAD.newDocument(docname)
FreeCAD.ActiveDocument = doc
getConfig()
read(filename)
return doc
def getConfig():
"Gets Arch IFC import preferences"
global CREATE_IFC_GROUPS, ASMESH, DEBUG, SKIP, PREFIX_NUMBERS, FORCE_PYTHON_PARSER, SEPARATE_OPENINGS, SEPARATE_PLACEMENTS
CREATE_IFC_GROUPS = False
IMPORT_IFC_FURNITURE = False
DEBUG = False
SKIP = ["IfcBuildingElementProxy","IfcFlowTerminal","IfcFurnishingElement"]
ASMESH = ["IfcFurnishingElement"]
PREFIX_NUMBERS = False
FORCE_PYTHON_PARSER = False
SEPARATE_OPENINGS = False
p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
CREATE_IFC_GROUPS = p.GetBool("createIfcGroups",False)
FORCE_PYTHON_PARSER = p.GetBool("forceIfcPythonParser",False)
DEBUG = p.GetBool("ifcDebug",False)
SEPARATE_OPENINGS = p.GetBool("ifcSeparateOpenings",False)
SEPARATE_PLACEMENTS = p.GetBool("ifcSeparatePlacements",False)
PREFIX_NUMBERS = p.GetBool("ifcPrefixNumbers",False)
skiplist = p.GetString("ifcSkip","")
if skiplist:
SKIP = skiplist.split(",")
asmeshlist = p.GetString("ifcAsMesh","")
if asmeshlist:
ASMESH = asmeshlist.split(",")
# TODO provisorily skipped objects
SKIP.extend(["IfcAnnotation"])
def getIfcOpenShell():
"locates and imports ifcopenshell"
try:
global IfcImport
import IfcImport
except:
FreeCAD.Console.PrintMessage(translate("Arch","Couldn't locate IfcOpenShell\n"))
return False
else:
return True
def read(filename):
"Parses an IFC file"
# parsing the IFC file
t1 = time.time()
processedIds = []
if getIfcOpenShell() and not FORCE_PYTHON_PARSER:
# use the IfcOpenShell parser
# check for IFcOpenShellVersion
global IFCOPENSHELL5
if hasattr(IfcImport,"IfcFile"):
IFCOPENSHELL5 = True
else:
IFCOPENSHELL5 = False
# preparing IfcOpenShell
if DEBUG: global ifcObjects,ifcParents
ifcObjects = {} # a table to relate ifc id with freecad object
ifcParents = {} # a table to relate ifc id with parent id
if SEPARATE_OPENINGS:
if not IFCOPENSHELL5:
if hasattr(IfcImport,"DISABLE_OPENING_SUBTRACTIONS"):
IfcImport.Settings(IfcImport.DISABLE_OPENING_SUBTRACTIONS,True)
else:
SKIP.append("IfcOpeningElement")
useShapes = False
if IFCOPENSHELL5:
useShapes = True
if hasattr(IfcImport,"clean"):
IfcImport.clean()
elif hasattr(IfcImport,"USE_BREP_DATA"):
IfcImport.Settings(IfcImport.USE_BREP_DATA,True)
useShapes = True
else:
if DEBUG: print "Warning: IfcOpenShell version very old, unable to handle Brep data"
# opening file
if IFCOPENSHELL5:
global ifc
ifc = IfcImport.open(filename)
objects = ifc.by_type("IfcProduct")
num_lines = len(objects)
relations = ifc.by_type("IfcRelAggregates") + ifc.by_type("IfcRelContainedInSpatialStructure") + ifc.by_type("IfcRelVoidsElement")
if not objects:
print "Error opening IFC file"
return
else:
num_lines = sum(1 for line in pyopen(filename))
if not IfcImport.Init(filename):
print "Error opening IFC file"
return
# processing geometry
idx = 0
while True:
objparentid = []
if IFCOPENSHELL5:
obj = objects[idx]
idx += 1
objid = int(str(obj).split("=")[0].strip("#"))
objname = obj.get_argument(obj.get_argument_index("Name"))
objtype = str(obj).split("=")[1].split("(")[0]
for r in relations:
if r.is_a("IfcRelAggregates"):
for c in getAttr(r,"RelatedObjects"):
if str(obj) == str(c):
objparentid.append(int(str(getAttr(r,"RelatingObject")).split("=")[0].strip("#")))
elif r.is_a("IfcRelContainedInSpatialStructure"):
for c in getAttr(r,"RelatedElements"):
if str(obj) == str(c):
objparentid.append(int(str(getAttr(r,"RelatingStructure")).split("=")[0].strip("#")))
elif r.is_a("IfcRelVoidsElement"):
if str(obj) == str(getAttr(r,"RelatedOpeningElement")):
objparentid.append(int(str(getAttr(r,"RelatingBuildingElement")).split("=")[0].strip("#")))
else:
if hasattr(IfcImport, 'GetBrepData'):
obj = IfcImport.GetBrepData()
else:
obj = IfcImport.Get()
objid = obj.id
idx = objid
objname = obj.name
objtype = obj.type
objparentid.append(obj.parent_id)
if DEBUG: print "["+str(int((float(idx)/num_lines)*100))+"%] parsing ",objid,": ",objname," of type ",objtype
# retrieving name
n = getCleanName(objname,objid,objtype)
# skip types
if objtype in SKIP:
if DEBUG: print "skipping because type is in skip list"
nobj = None
# check if object was already processed, to workaround an ifcopenshell bug
elif objid in processedIds:
if DEBUG: print "skipping because this object was already processed"
else:
# build shape
shape = None
if useShapes:
shape = getShape(obj,objid)
# walls
if objtype in ["IfcWallStandardCase","IfcWall"]:
nobj = makeWall(objid,shape,n)
# windows
elif objtype in ["IfcWindow","IfcDoor"]:
nobj = makeWindow(objid,shape,n)
# structs
elif objtype in ["IfcBeam","IfcColumn","IfcSlab","IfcFooting"]:
nobj = makeStructure(objid,shape,objtype,n)
# roofs
elif objtype in ["IfcRoof"]:
nobj = makeRoof(objid,shape,n)
# furniture
elif objtype in ["IfcFurnishingElement"]:
nobj = FreeCAD.ActiveDocument.addObject("Part::Feature",n)
nobj.Shape = shape
# sites
elif objtype in ["IfcSite"]:
nobj = makeSite(objid,shape,n)
# floors
elif objtype in ["IfcBuildingStorey"]:
nobj = Arch.makeFloor(name=n)
nobj.Label = n
# floors
elif objtype in ["IfcBuilding"]:
nobj = Arch.makeBuilding(name=n)
nobj.Label = n
# spaces
elif objtype in ["IfcSpace"]:
nobj = makeSpace(objid,shape,n)
elif shape:
# treat as dumb parts
if DEBUG: print "Fixme: Shape-containing object not handled: ",objid, " ", objtype
nobj = FreeCAD.ActiveDocument.addObject("Part::Feature",n)
nobj.Label = n
nobj.Shape = shape
else:
# treat as meshes
if DEBUG: print "Warning: Object without shape: ",objid, " ", objtype
if hasattr(obj,"mesh"):
if not hasattr(obj.mesh, 'verts'):
obj = IfcImport.Get() # Get triangulated rep of same product
me,pl = getMesh(obj)
nobj = FreeCAD.ActiveDocument.addObject("Mesh::Feature",n)
nobj.Label = n
nobj.Mesh = me
nobj.Placement = pl
else:
if DEBUG: print "Error: Skipping object without mesh: ",objid, " ", objtype
# registering object number and parent
if objparentid:
ifcParents[objid] = []
for p in objparentid:
ifcParents[objid].append([p,not (objtype in subtractiveTypes)])
ifcObjects[objid] = nobj
processedIds.append(objid)
if IFCOPENSHELL5:
if idx >= len(objects):
break
else:
if not IfcImport.Next():
break
# processing non-geometry and relationships
parents_temp = dict(ifcParents)
import ArchCommands
#print parents_temp
while parents_temp:
id, comps = parents_temp.popitem()
for c in comps:
parent_id = c[0]
additive = c[1]
if (id <= 0) or (parent_id <= 0):
# root dummy object
parent = None
elif parent_id in ifcObjects:
parent = ifcObjects[parent_id]
# check if parent is a subtraction, if yes parent to grandparent
if parent_id in ifcParents:
for p in ifcParents[parent_id]:
if p[1] == False:
grandparent_id = p[0]
if grandparent_id in ifcObjects:
parent = ifcObjects[grandparent_id]
else:
# creating parent if needed
if IFCOPENSHELL5:
parent_ifcobj = ifc.by_id(parent_id)
parentid = int(str(obj).split("=")[0].strip("#"))
parentname = obj.get_argument(obj.get_argument_index("Name"))
parenttype = str(obj).split("=")[1].split("(")[0]
else:
parent_ifcobj = IfcImport.GetObject(parent_id)
parentid = obj.id
parentname = obj.name
parenttype = obj.type
#if DEBUG: print "["+str(int((float(idx)/num_lines)*100))+"%] parsing ",parentid,": ",parentname," of type ",parenttype
n = getCleanName(parentname,parentid,parenttype)
if parentid <= 0:
parent = None
elif parenttype == "IfcBuildingStorey":
parent = Arch.makeFloor(name=n)
parent.Label = n
elif parenttype == "IfcBuilding":
parent = Arch.makeBuilding(name=n)
parent.Label = n
elif parenttype == "IfcSite":
parent = Arch.makeSite(name=n)
parent.Label = n
elif parenttype == "IfcWindow":
parent = Arch.makeWindow(name=n)
parent.Label = n
else:
if DEBUG: print "Fixme: skipping unhandled parent: ", parentid, " ", parenttype
parent = None
# registering object number and parent
if not IFCOPENSHELL5:
if parent_ifcobj.parent_id > 0:
ifcParents[parentid] = [parent_ifcobj.parent_id,True]
parents_temp[parentid] = [parent_ifcobj.parent_id,True]
if parent and (not parentid in ifcObjects):
ifcObjects[parentid] = parent
# attributing parent
if parent and (id in ifcObjects):
if ifcObjects[id] and (ifcObjects[id].Name != parent.Name):
if additive:
if DEBUG: print "adding ",ifcObjects[id].Name, " to ",parent.Name
ArchCommands.addComponents(ifcObjects[id],parent)
else:
if DEBUG: print "removing ",ifcObjects[id].Name, " from ",parent.Name
ArchCommands.removeComponents(ifcObjects[id],parent)
if not IFCOPENSHELL5:
IfcImport.CleanUp()
else:
# use only the internal python parser
FreeCAD.Console.PrintWarning(translate("Arch","IfcOpenShell not found or disabled, falling back on internal parser.\n"))
schema=getSchema()
if schema:
if DEBUG: print "opening",filename,"..."
ifcReader.DEBUG = DEBUG
ifc = ifcReader.IfcDocument(filename,schema=schema)
else:
FreeCAD.Console.PrintWarning(translate("Arch","IFC Schema not found, IFC import disabled.\n"))
return None
t2 = time.time()
if DEBUG: print "Successfully loaded",ifc,"in %s s" % ((t2-t1))
# getting walls
for w in ifc.getEnt("IfcWallStandardCase"):
nobj = makeWall(w)
# getting windows and doors
for w in (ifc.getEnt("IfcWindow") + ifc.getEnt("IfcDoor")):
nobj = makeWindow(w)
# getting structs
for w in (ifc.getEnt("IfcSlab") + ifc.getEnt("IfcBeam") + ifc.getEnt("IfcColumn") \
+ ifc.getEnt("IfcFooting")):
nobj = makeStructure(w)
# getting floors
for f in ifc.getEnt("IfcBuildingStorey"):
group(f,ifc,"Floor")
# getting buildings
for b in ifc.getEnt("IfcBuilding"):
group(b,ifc,"Building")
# getting sites
for s in ifc.getEnt("IfcSite"):
group(s,ifc,"Site")
if DEBUG: print "done parsing. Recomputing..."
FreeCAD.ActiveDocument.recompute()
t3 = time.time()
if DEBUG: print "done processing IFC file in %s s" % ((t3-t1))
return None
def getCleanName(name,ifcid,ifctype):
"Get a clean name from an ifc object"
#print "getCleanName called",name,ifcid,ifctype
n = name
if not n:
n = ifctype
if PREFIX_NUMBERS:
n = "ID"+str(ifcid)+" "+n
#for c in ",.!?;:":
# n = n.replace(c,"_")
return n
def makeWall(entity,shape=None,name="Wall"):
"makes a wall in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
else:
body = FreeCAD.ActiveDocument.addObject("Mesh::Feature",name+"_body")
body.Mesh = shape
wall = Arch.makeWall(body,name=name)
wall.Label = name
if DEBUG: print "made wall object ",entity,":",wall
return wall
# use internal parser
if DEBUG: print "=====> making wall",entity.id
placement = wall = wire = body = width = height = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print "got wall placement",entity.id,":",placement
width = entity.getProperty("Width")
height = entity.getProperty("Height")
if width and height:
if DEBUG: print "got width, height ",entity.id,":",width,"/",height
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Axis":
wire = getWire(r.Items,placement)
wall = Arch.makeWall(wire,width,height,align="Center",name="Wall"+str(entity.id))
else:
if DEBUG: print "no height or width properties found..."
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Body":
for b in r.Items:
if b.type == "IFCEXTRUDEDAREASOLID":
norm = getVector(b.ExtrudedDirection)
norm.normalize()
wire = getWire(b.SweptArea,placement)
wall = Arch.makeWall(wire,width=0,height=b.Depth,name="Wall"+str(entity.id))
wall.Normal = norm
if wall:
if DEBUG: print "made wall object ",entity.id,":",wall
return wall
if DEBUG: print "error: skipping wall",entity.id
return None
except:
if DEBUG: print "error: skipping wall",entity
return None
def makeWindow(entity,shape=None,name="Window"):
"makes a window in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
window = Arch.makeWindow(name=name)
window.Shape = shape
window.Label = name
if DEBUG: print "made window object ",entity,":",window
return window
# use internal parser
if DEBUG: print "=====> making window",entity.id
placement = window = wire = body = width = height = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print "got window placement",entity.id,":",placement
width = entity.getProperty("Width")
height = entity.getProperty("Height")
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Body":
for b in r.Items:
if b.type == "IFCEXTRUDEDAREASOLID":
wire = getWire(b.SweptArea,placement)
window = Arch.makeWindow(wire,width=b.Depth,name=objtype+str(entity.id))
if window:
if DEBUG: print "made window object ",entity.id,":",window
return window
if DEBUG: print "error: skipping window",entity.id
return None
except:
if DEBUG: print "error: skipping window",entity
return None
def makeStructure(entity,shape=None,ifctype=None,name="Structure"):
"makes a structure in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
else:
body = FreeCAD.ActiveDocument.addObject("Mesh::Feature",name+"_body")
body.Mesh = shape
structure = Arch.makeStructure(body,name=name)
structure.Label = name
if ifctype == "IfcBeam":
structure.Role = "Beam"
elif ifctype == "IfcColumn":
structure.Role = "Column"
elif ifctype == "IfcSlab":
structure.Role = "Slab"
elif ifctype == "IfcFooting":
structure.Role = "Foundation"
if DEBUG: print "made structure object ",entity,":",structure," (type: ",ifctype,")"
return structure
# use internal parser
if DEBUG: print "=====> making struct",entity.id
placement = structure = wire = body = width = height = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print "got window placement",entity.id,":",placement
width = entity.getProperty("Width")
height = entity.getProperty("Height")
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Body":
for b in r.Items:
if b.type == "IFCEXTRUDEDAREASOLID":
wire = getWire(b.SweptArea,placement)
structure = Arch.makeStructure(wire,height=b.Depth,name=objtype+str(entity.id))
if structure:
if DEBUG: print "made structure object ",entity.id,":",structure
return structure
if DEBUG: print "error: skipping structure",entity.id
return None
except:
if DEBUG: print "error: skipping structure",entity
return None
def makeSite(entity,shape=None,name="Site"):
"makes a site in the freecad document"
try:
body = None
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
else:
body = FreeCAD.ActiveDocument.addObject("Mesh::Feature",name+"_body")
body.Mesh = shape
site = Arch.makeSite(name=name)
site.Label = name
if body:
site.Terrain = body
if DEBUG: print "made site object ",entity,":",site
return site
except:
return None
def makeSpace(entity,shape=None,name="Space"):
"makes a space in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
space = Arch.makeSpace(name=name)
space.Label = name
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
space.Base = body
body.ViewObject.hide()
if DEBUG: print "made space object ",entity,":",space
return space
except:
return None
def makeRoof(entity,shape=None,name="Roof"):
"makes a roof in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
roof = Arch.makeRoof(name=name)
roof.Label = name
roof.Shape = shape
if DEBUG: print "made roof object ",entity,":",roof
return roof
except:
return None
# geometry helpers ###################################################################
def getMesh(obj):
"gets mesh and placement from an IfcOpenShell object"
if IFCOPENSHELL5:
return None,None
print "fixme: mesh data not yet supported" # TODO implement this with OCC tessellate
import Mesh
meshdata = []
print obj.mesh.faces
print obj.mesh.verts
f = obj.mesh.faces
v = obj.mesh.verts
for i in range(0, len(f), 3):
face = []
for j in range(3):
vi = f[i+j]*3
face.append([v[vi],v[vi+1],v[vi+2]])
meshdata.append(face)
print meshdata
me = Mesh.Mesh(meshdata)
# get transformation matrix
m = obj.matrix
mat = FreeCAD.Matrix(m[0], m[3], m[6], m[9],
m[1], m[4], m[7], m[10],
m[2], m[5], m[8], m[11],
0, 0, 0, 1)
pl = FreeCAD.Placement(mat)
return me,pl
def getShape(obj,objid):
"gets a shape from an IfcOpenShell object"
#print "retrieving shape from obj ",objid
import Part
sh=Part.Shape()
brep_data = None
if IFCOPENSHELL5:
try:
if SEPARATE_OPENINGS and hasattr(IfcImport,"DISABLE_OPENING_SUBTRACTIONS"):
if SEPARATE_PLACEMENTS and hasattr(IfcImport,"DISABLE_OBJECT_PLACEMENT"):
brep_data = IfcImport.create_shape(obj,IfcImport.DISABLE_OPENING_SUBTRACTIONS | IfcImport.DISABLE_OBJECT_PLACEMENT)
else:
brep_data = IfcImport.create_shape(obj,IfcImport.DISABLE_OPENING_SUBTRACTIONS)
else:
if SEPARATE_PLACEMENTS and hasattr(IfcImport,"DISABLE_OBJECT_PLACEMENT"):
brep_data = IfcImport.create_shape(obj,IfcImport.DISABLE_OBJECT_PLACEMENT)
else:
brep_data = IfcImport.create_shape(obj)
except:
print "Unable to retrieve shape data"
else:
brep_data = obj.mesh.brep_data
if brep_data:
try:
if MAKETEMPFILES:
import tempfile
tf = tempfile.mkstemp(suffix=".brp")[1]
of = pyopen(tf,"wb")
of.write(brep_data)
of.close()
sh = Part.read(tf)
os.remove(tf)
else:
sh.importBrepFromString(brep_data)
except:
print "Error: malformed shape"
return None
else:
if IFCOPENSHELL5 and SEPARATE_PLACEMENTS:
sh.Placement = getPlacement(getAttr(obj,"ObjectPlacement"))
if not sh.Solids:
# try to extract a solid shape
if sh.Faces:
try:
if DEBUG: print "Malformed solid. Attempting to fix..."
shell = Part.makeShell(sh.Faces)
if shell:
solid = Part.makeSolid(shell)
if solid:
sh = solid
except:
if DEBUG: print "failed to retrieve solid from object ",objid
else:
if DEBUG: print "object ", objid, " doesn't contain any geometry"
if not IFCOPENSHELL5:
m = obj.matrix
mat = FreeCAD.Matrix(m[0], m[3], m[6], m[9],
m[1], m[4], m[7], m[10],
m[2], m[5], m[8], m[11],
0, 0, 0, 1)
sh.Placement = FreeCAD.Placement(mat)
# if DEBUG: print "getting Shape from ",obj
#print "getting shape: ",sh,sh.Solids,sh.Volume,sh.isValid(),sh.isNull()
#for v in sh.Vertexes: print v.Point
return sh
def getPlacement(entity):
"returns a placement from the given entity"
if DEBUG: print " getting placement ",entity
if not entity:
return None
if IFCOPENSHELL5:
if isinstance(entity,int):
entity = ifc.by_id(entity)
entitytype = str(entity).split("=")[1].split("(")[0].upper()
entityid = int(str(entity).split("=")[0].strip("#"))
else:
entitytype = entity.type.upper()
entityid = entity.id
pl = None
if entitytype == "IFCAXIS2PLACEMENT3D":
x = getVector(getAttr(entity,"RefDirection"))
z = getVector(getAttr(entity,"Axis"))
y = z.cross(x)
loc = getVector(getAttr(entity,"Location"))
m = DraftVecUtils.getPlaneRotation(x,y,z)
pl = FreeCAD.Placement(m)
pl.move(loc)
elif entitytype == "IFCLOCALPLACEMENT":
pl = getPlacement(getAttr(entity,"PlacementRelTo"))
relpl = getPlacement(getAttr(entity,"RelativePlacement"))
if pl and relpl:
pl = relpl.multiply(pl)
elif relpl:
pl = relpl
elif entitytype == "IFCCARTESIANPOINT":
loc = getVector(entity)
pl = FreeCAD.Placement()
pl.move(loc)
if DEBUG: print " made placement for ",entityid,":",pl
return pl
def getAttr(entity,attr):
"returns the given attribute from the given entity"
if IFCOPENSHELL5:
if isinstance(entity,int):
entity = ifc.by_id(entity)
i = entity.get_argument_index(attr)
return entity.get_argument(i)
else:
return getattr(entity,attr)
def getVector(entity):
"returns a vector from the given entity"
if DEBUG: print " getting point from ",entity
if IFCOPENSHELL5:
if isinstance(entity,int):
entity = ifc.by_id(entity)
entitytype = str(entity).split("=")[1].split("(")[0].upper()
else:
entitytype = entity.type.upper()
if entitytype == "IFCDIRECTION":
DirectionRatios = getAttr(entity,"DirectionRatios")
if len(DirectionRatios) == 3:
return FreeCAD.Vector(tuple(DirectionRatios))
else:
return FreeCAD.Vector(tuple(DirectionRatios+[0]))
elif entitytype == "IFCCARTESIANPOINT":
Coordinates = getAttr(entity,"Coordinates")
if len(Coordinates) == 3:
return FreeCAD.Vector(tuple(Coordinates))
else:
return FreeCAD.Vector(tuple(Coordinates+[0]))
return None
# below is only used by the internal parser #########################################
def decode(name):
"decodes encoded strings"
try:
decodedName = (name.decode("utf8"))
except UnicodeDecodeError:
try:
decodedName = (name.decode("latin1"))
except UnicodeDecodeError:
FreeCAD.Console.PrintError(translate("Arch", "Error: Couldn't determine character encoding\n"))
decodedName = name
return decodedName
def getSchema():
"retrieves the express schema"
custom = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch").GetString("CustomIfcSchema","")
if custom:
if os.path.exists(custom):
if DEBUG: print "Using custom schema: ",custom.split(os.sep)[-1]
return custom
p = None
p = os.path.join(FreeCAD.ConfigGet("UserAppData"),SCHEMA.split(os.sep)[-1])
if os.path.exists(p):
return p
import ArchCommands
p = ArchCommands.download(SCHEMA)
if p:
return p
return None
def group(entity,ifc,mode=None):
"gathers the children of the given entity"
# only used by the internal parser
try:
if DEBUG: print "=====> making group",entity.id
placement = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print "got cell placement",entity.id,":",placement
subelements = ifc.find("IFCRELCONTAINEDINSPATIALSTRUCTURE","RelatingStructure",entity)
subelements.extend(ifc.find("IFCRELAGGREGATES","RelatingObject",entity))
elts = []
for s in subelements:
if hasattr(s,"RelatedElements"):
s = s.RelatedElements
if not isinstance(s,list): s = [s]
elts.extend(s)
elif hasattr(s,"RelatedObjects"):
s = s.RelatedObjects
if not isinstance(s,list): s = [s]
elts.extend(s)
elif hasattr(s,"RelatedObject"):
s = s.RelatedObject
if not isinstance(s,list): s = [s]
elts.extend(s)
print "found dependent elements: ",elts
groups = [['Wall',['IfcWallStandardCase'],[]],
['Window',['IfcWindow','IfcDoor'],[]],
['Structure',['IfcSlab','IfcFooting','IfcBeam','IfcColumn'],[]],
['Floor',['IfcBuildingStorey'],[]],
['Building',['IfcBuilding'],[]],
['Furniture',['IfcFurnishingElement'],[]]]
for e in elts:
for g in groups:
for t in g[1]:
if e.type.upper() == t.upper():
if hasattr(FreeCAD.ActiveDocument,g[0]+str(e.id)):
g[2].append(FreeCAD.ActiveDocument.getObject(g[0]+str(e.id)))
print "groups:",groups
comps = []
if CREATE_IFC_GROUPS:
if DEBUG: print "creating subgroups"
for g in groups:
if g[2]:
if g[0] in ['Building','Floor']:
comps.extend(g[2])
else:
fcg = FreeCAD.ActiveDocument.addObject("App::DocumentObjectGroup",g[0]+"s")
for o in g[2]:
fcg.addObject(o)
comps.append(fcg)
else:
for g in groups:
comps.extend(g[2])
label = entity.Name
name = mode + str(entity.id)
cell = None
if mode == "Site":
cell = Arch.makeSite(comps,name=name)
elif mode == "Floor":
cell = Arch.makeFloor(comps,name=name)
elif mode == "Building":
cell = Arch.makeBuilding(comps,name=name)
if label and cell:
cell.Label = label
except:
if DEBUG: print "error: skipping group ",entity.id
def getWire(entity,placement=None):
"returns a wire (created in the freecad document) from the given entity"
# only used by the internal parser
if DEBUG: print "making Wire from :",entity
if not entity: return None
if entity.type == "IFCPOLYLINE":
pts = []
for p in entity.Points:
pts.append(getVector(p))
return Draft.getWire(pts,placement=placement)
elif entity.type == "IFCARBITRARYCLOSEDPROFILEDEF":
pts = []
for p in entity.OuterCurve.Points:
pts.append(getVector(p))
return Draft.getWire(pts,closed=True,placement=placement)
# EXPORT ##########################################################
def export(exportList,filename):
"called when freecad exports a file"
try:
import IfcImport
except:
print """importIFC: ifcOpenShell is not installed. IFC export is unavailable.
Note: IFC export currently requires an experimental version of IfcOpenShell
available from https://github.com/aothms/IfcOpenShell"""
return
else:
if not hasattr(IfcImport,"IfcFile"):
print """importIFC: The version of ifcOpenShell installed on this system doesn't
have IFC export capabilities. IFC export currently requires an experimental
version of IfcOpenShell available from https://github.com/aothms/IfcOpenShell"""
return
import ifcWriter
# creating base IFC project
import Arch,Draft
getConfig()
ifcWriter.PRECISION = Draft.precision()
p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
scaling = p.GetFloat("IfcScalingFactor",1.0)
exporttxt = p.GetBool("IfcExportList",False)
forcebrep = p.GetBool("ifcExportAsBrep",False)
application = "FreeCAD"
ver = FreeCAD.Version()
version = ver[0]+"."+ver[1]+" build"+ver[2]
owner = FreeCAD.ActiveDocument.CreatedBy
company = FreeCAD.ActiveDocument.Company
project = FreeCAD.ActiveDocument.Name
ifc = ifcWriter.IfcDocument(filename,project,owner,company,application,version)
txt = []
# get all children and reorder list to get buildings and floors processed first
objectslist = Draft.getGroupContents(exportList,walls=True,addgroups=True)
objectslist = Arch.pruneIncluded(objectslist)
buildings = []
floors = []
others = []
for obj in objectslist:
otype = Draft.getType(obj)
if otype == "Building":
buildings.append(obj)
elif otype == "Floor":
floors.append(obj)
else:
others.append(obj)
objectslist = buildings + floors + others
if DEBUG: print "adding ", len(objectslist), " objects"
# process objects
for obj in objectslist:
otype = Draft.getType(obj)
name = str(obj.Label)
parent = Arch.getHost(obj)
gdata = None
if otype in ["Group"]:
# unsupported objects. TODO: support
continue
if DEBUG: print "adding ",obj.Label
if not forcebrep:
gdata = Arch.getExtrusionData(obj,scaling)
#if DEBUG: print "extrusion data for ",obj.Label," : ",gdata
if not gdata:
fdata = Arch.getBrepFacesData(obj,scaling)
#if DEBUG: print "brep data for ",obj.Label," : ",fdata
if DEBUG: print " Brep"
if not fdata:
if obj.isDerivedFrom("Part::Feature"):
print "IFC export: error retrieving the shape of object ", obj.Name
continue
else:
if DEBUG: print " Extrusion"
spacer = ""
for i in range(36-len(obj.Label)):
spacer += " "
if otype in ["Structure","Window"]:
if hasattr(obj,"Role"):
tp = obj.Role
else:
tp = otype
else:
tp = otype
txt.append(obj.Label + spacer + tp)
if otype == "Building":
ifc.addBuilding( name=name )
elif otype == "Floor":
if parent:
parent = ifc.findByName("IfcBuilding",str(parent.Label))
ifc.addStorey( building=parent, name=name )
elif otype == "Wall":
if parent:
parent = ifc.findByName("IfcBuildingStorey",str(parent.Label))
if gdata:
ifc.addWall( ifc.addExtrudedPolyline(gdata[0],gdata[1]), storey=parent, name=name, standard=True )
elif fdata:
ifc.addWall( [ifc.addFacetedBrep(f) for f in fdata], storey=parent, name=name )
elif otype == "Structure":
if parent:
parent = ifc.findByName("IfcBuildingStorey",str(parent.Label))