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
|
#!BPY
"""
Name: 'Wings3D (.wings)...'
Blender: 232
Group: 'Import'
Tooltip: 'Import Wings3D File Format (.wings)'
"""
__author__ = "Anthony D'Agostino (Scorpius)"
__url__ = ("blender", "elysiun",
"Author's homepage, http://www.redrival.com/scorpius",
"Wings 3D, http://www.wings3d.com")
__version__ = "Update on version from IOSuite 0.5"
__bpydoc__ = """\
This script imports Wings3D files to Blender.
Wings3D is an open source polygon modeler written in Erlang, a
language similar to Lisp. The .wings file format is a binary
representation of erlang terms (lists, tuples, atoms, etc.) and is
compressed with zlib.
Usage:<br>
Execute this script from the "File->Import" menu and choose a Wings file
to open.
Supported:<br>
Meshes only. Not guaranteed to work in all situations.
Missing:<br>
Materials, UV Coordinates, and Vertex Color info will be ignored.
Known issues:<br>
Triangulation of convex polygons works fine, and uses a very simple
fanning algorithm. Convex polygons (i.e., shaped like the letter "U")
require a different algorithm, and will be triagulated incorrectly.
Notes:<br>
Last tested with Wings 3D 0.98.25 & Blender 2.35a.<br>
This version has improvements made by Adam Saltsman (AdamAtomic) and Toastie.
"""
# $Id$
#
# +---------------------------------------------------------+
# | Copyright (c) 2002 Anthony D'Agostino |
# | http://www.redrival.com/scorpius |
# | scorpius@netzero.com |
# | Feb 19, 2002 |
# ***** BEGIN GPL LICENSE BLOCK *****
#
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# ***** END GPL LICENCE BLOCK *****
import Blender, meshtools
import struct, time, sys, os, zlib, cStringIO
# ==============================================
# === Read The 'Header' Common To All Chunks ===
# ==============================================
def read_chunkheader(data):
data.read(2) #version, tag = struct.unpack(">BB", data.read(2))
misc, namelen = struct.unpack(">BH", data.read(3))
name = data.read(namelen)
return name
# ==============================
# === Read The Material Mode ===
# ==============================
def read_mode(data):
data.read(5) # BL
read_chunkheader(data) # "mode"
misc, namelen = struct.unpack(">BH", data.read(3))
data.read(namelen)
data.read(1) # 6A
# =======================
# === Read Hard Edges ===
# =======================
def read_hardedges(data):
hardedge_table = {} # hard edges table
tag = data.read(1)
if tag == '\x6A':
return hardedge_table # There are no hard edges
elif tag == '\x6B':
numhardedges, = struct.unpack(">H", data.read(2))
#print "numhardedges:", numhardedges
for i in range(numhardedges):
hardedge_table[i] = struct.unpack(">B", data.read(1))[0]
elif tag == '\x6C':
numhardedges, = struct.unpack(">L", data.read(4))
#print "numhardedges:", numhardedges
for i in range(numhardedges):
misc = data.read(1)
if misc == '\x61': # next value is stored as a byte
hardedge_table[i] = struct.unpack(">B", data.read(1))[0]
elif misc == '\x62': # next value is stored as a long
hardedge_table[i] = struct.unpack(">L", data.read(4))[0]
data.read(1) # 6A
else:
print tag
return hardedge_table
# ==================
# === Read Edges ===
# ==================
def read_edges(data):
misc, numedges = struct.unpack(">BL", data.read(5))
edge_table = {} # the winged-edge table
for i in range(numedges):
if not i%100 and meshtools.show_progress: Blender.Window.DrawProgressBar(float(i)/numedges, "Reading Edges")
misc, etype = struct.unpack(">BL", data.read(5))
if etype == 2: # Vertex Colors
data.read(10) # or read_chunkheader(data) # "color"
data.read(5) # BL
r1,g1,b1,r2,g2,b2 = struct.unpack(">dddddd", data.read(48))
#print "%3d %3d %3d | %3d %3d %3d" % (r1*255,g1*255,b1*255,r2*255,g2*255,b2*255),
#print "%f %f %f | %f %f %f" % (r1, g1, b1, r2, g2, b2)
data.read(9) # or read_chunkheader(data) # "edge"
edge = [] # the eight entries for this edge
for e in range(8): # Sv Ev | Lf Rf | Lp Ls | Rp Rs
misc = data.read(1)
if misc == '\x61': # next value is stored as a byte
entry, = struct.unpack(">B", data.read(1))
edge.append(entry)
elif misc == '\x62': # next value is stored as a long
entry, = struct.unpack(">L", data.read(4))
edge.append(entry)
edge_table[i] = edge
data.read(1) # 6A
data.read(1) # 6A
return edge_table
# ==================
# === Read Faces ===
# ==================
def read_faces(data):
mat_table = {} #list of faces and material names
misc, numfaces = struct.unpack(">BL", data.read(5))
for i in range(numfaces):
if not i%100 and meshtools.show_progress: Blender.Window.DrawProgressBar(float(i)/numfaces, "Reading Faces")
if data.read(1) == '\x6C': # a material follows
data.read(4)
read_chunkheader(data)
misc, namelen = struct.unpack(">BH", data.read(3))
mat_table[i] = data.read(namelen)
data.read(1) # 6A?
data.read(1) # 6A
return mat_table
# ==================
# === Read Verts ===
# ==================
def read_verts(data):
misc, numverts = struct.unpack(">BL", data.read(5))
verts = [] # a list of verts
for i in range(numverts):
if not i%100 and meshtools.show_progress: Blender.Window.DrawProgressBar(float(i)/numverts, "Reading Verts")
data.read(10)
x, y, z = struct.unpack(">ddd", data.read(24)) # double precision
verts.append((x, -z, y))
data.read(1) # 6A
data.read(1) # 6A
return verts
# =======================
# === Make Face Table ===
# =======================
def make_face_table(edge_table): # For Wings
face_table = {}
for i in range(len(edge_table)):
Lf = edge_table[i][2]
Rf = edge_table[i][3]
if Lf >= 0:
face_table[Lf] = i
if Rf >= 0:
face_table[Rf] = i
return face_table
# =======================
# === Make Vert Table ===
# =======================
def make_vert_table(edge_table): # For Wings
vert_table = {}
for i in range(len(edge_table)):
Sv = edge_table[i][0]
Ev = edge_table[i][1]
vert_table[Sv] = i
vert_table[Ev] = i
return vert_table
# ==================
# === Make Faces ===
# ==================
def make_faces(edge_table): # For Wings
face_table = make_face_table(edge_table)
faces=[]
for i in range(len(face_table)):
face_verts = []
current_edge = face_table[i]
while(1):
if i == edge_table[current_edge][3]:
next_edge = edge_table[current_edge][7] # Right successor edge
next_vert = edge_table[current_edge][0]
elif i == edge_table[current_edge][2]:
next_edge = edge_table[current_edge][5] # Left successor edge
next_vert = edge_table[current_edge][1]
else:
break
face_verts.append(next_vert)
current_edge = next_edge
if current_edge == face_table[i]: break
if len(face_verts) > 0:
face_verts.reverse()
faces.append(face_verts)
return faces
# =======================
# === Dump Wings File ===
# =======================
def dump_wings(filename):
import pprint
start = time.clock()
file = open(filename, "rb")
header = file.read(15)
fsize, = struct.unpack(">L", file.read(4)) # file_size - 19
misc, = struct.unpack(">H", file.read(2))
dsize, = struct.unpack(">L", file.read(4)) # uncompressed data size
data = file.read(fsize-6)
file.close()
data = zlib.decompress(data)
if dsize != len(data): print "ERROR: uncompressed size does not match."
data = cStringIO.StringIO(data)
print "header:", header
print read_chunkheader(data) # === wings chunk ===
data.read(4) # misc bytes
misc, numobjs, = struct.unpack(">BL", data.read(5))
print "filename:", filename
print "numobjs :", numobjs
for obj in range(numobjs):
print read_chunkheader(data) # === object chunk ===
misc, namelen = struct.unpack(">BH", data.read(3))
objname = data.read(namelen)
print read_chunkheader(data) # === winged chunk ===
edge_table = read_edges(data)
mat_table = read_faces(data)
numfaces = len(mat_table)
verts = read_verts(data)
hardedge_table = read_hardedges(data)
face_table = {} # contains an incident edge
vert_table = {} # contains an incident edge
for i in range(len(edge_table)):
face_table[edge_table[i][2]] = i # generate face_table
face_table[edge_table[i][3]] = i
vert_table[edge_table[i][0]] = i # generate vert_table
vert_table[edge_table[i][1]] = i
print "objname :", objname
print "numedges:", len(edge_table)
print "numfaces:", numfaces
print "numverts:", len(verts)
print
print "Ä"*79
print "edge_table:"
#pprint.pprint(edge_table)
#for i in range(len(edge_table)): print "%2d" % (i), edge_table[i]
print
print "face_table:"
#pprint.pprint(face_table)
#for i in range(len(face_table)): print "%2d %2d" % (i, face_table[i])
print
print "vert_table:"
#pprint.pprint(vert_table)
#for i in range(len(vert_table)): print "%2d %2d" % (i, vert_table[i])
file.close()
end = time.clock()
print '\a\r',
sys.stderr.write("\nDone in %.2f %s\a\r" % (end-start, "seconds"))
# =========================
# === Read Wings Format ===
# =========================
def read(filename):
start = time.clock()
file = open(filename, "rb")
header = file.read(15)
fsize, = struct.unpack(">L", file.read(4)) # file_size - 19
misc, = struct.unpack(">H", file.read(2))
dsize, = struct.unpack(">L", file.read(4)) # uncompressed data size
data = file.read(fsize-6)
#print file.tell(), "bytes"
file.close()
Blender.Window.DrawProgressBar(1.0, "Decompressing Data")
data = zlib.decompress(data)
data = cStringIO.StringIO(data)
read_chunkheader(data) # wings chunk
data.read(4) # misc bytes
misc, numobjs = struct.unpack(">BL", data.read(5))
message = "Successfully imported " + os.path.basename(filename) + '\n\n'
message += "%s %8s %8s %8s\n" % ("Object".ljust(15), "faces", "edges", "verts")
message += "%s %8s %8s %8s\n" % ("ÄÄÄÄÄÄ".ljust(15), "ÄÄÄÄÄ", "ÄÄÄÄÄ", "ÄÄÄÄÄ")
for obj in range(numobjs):
read_chunkheader(data) # object chunk
misc, namelen = struct.unpack(">BH", data.read(3))
objname = data.read(namelen)
read_chunkheader(data) # winged chunk
edge_table = read_edges(data)
mat_table = read_faces(data)
numfaces = len(mat_table)
verts = read_verts(data)
hardedge_table = read_hardedges(data)
# Manually split hard edges
# TODO: Handle the case where there are 2+ edges on a face
duped = {}
processed = []
cleanup = []
oldedgecount = len(edge_table)
for i in range(len(verts)):
duped[i] = -1
for j in range(len(hardedge_table)):
hardedge = hardedge_table[j]
oldedge = edge_table[hardedge]
newedge = [] # Copy old edge into a new list
for k in range(len(oldedge)):
newedge.append(oldedge[k])
# Duplicate start vert if not duped already
sv = newedge[0]
if duped[sv] == -1:
verts.append(verts[sv])
duped[sv] = len(verts)-1
newedge[0] = duped[sv]
# Duplicate end vert if not duped already
ev = newedge[1]
if duped[ev] == -1:
verts.append(verts[ev])
duped[ev] = len(verts)-1
newedge[1] = duped[ev]
# Decide which way to cut the edge
flip = 0
for v in range(len(processed)):
if processed[v][0] == oldedge[0]:
flip = 1
elif processed[v][1] == oldedge[1]:
flip = 1
if flip == 0:
of = 3
oe1 = 6
oe2 = 7
nf = 2
ne1 = 4
ne2 = 5
else:
of = 2
oe1 = 4
oe2 = 5
nf = 3
ne1 = 6
ne2 = 7
# Fix up side-specific edge fields
oldedge[of] = -1
oldedge[oe1] = -1
oldedge[oe2] = -1
newedge[nf] = -1
newedge[ne1] = -1
newedge[ne2] = -1
# Store new edge's neighbors for cleanup later
cleanup.append(edge_table[newedge[oe1]])
cleanup.append(edge_table[newedge[oe2]])
#DEBUG
# Sv Ev | Lf Rf | Lp Ls | Rp Rs
#print "Old Edge:",hardedge,oldedge
#print "New Edge:",len(edge_table),newedge
# Add this new edge to the edge table
edge_table[len(edge_table)] = newedge
if flip == 0:
processed.append(oldedge) # mark it off as processed
# Cycle through cleanup list and fix it up
for c in range(len(cleanup)):
cleanupedge = cleanup[c]
# Fix up their verts in case they were duped
sv = cleanupedge[0]
if sv < len(duped):
if duped[sv] >= 0:
cleanupedge[0] = duped[sv]
ev = cleanupedge[1]
if ev < len(duped):
if duped[ev] >= 0:
cleanupedge[1] = duped[ev]
# Fix up edge info (in case a hard edge was replaced with a new one)
edgecount = c/2
hardedge = hardedge_table[edgecount] # look up what edge we were replacing
newedgenum = oldedgecount+edgecount # calculate new edge's index
if cleanupedge[4] == hardedge:
cleanupedge[4] = newedgenum
if cleanupedge[5] == hardedge:
cleanupedge[5] = newedgenum
if cleanupedge[6] == hardedge:
cleanupedge[6] = newedgenum
if cleanupedge[7] == hardedge:
cleanupedge[7] = newedgenum
#for i in range(len(edge_table)): print "%2d" % (i), edge_table[i]
read_mode(data)
faces = make_faces(edge_table)
message += "%s %8s %8s %8s\n" % (objname.ljust(15), len(faces), len(edge_table), len(verts))
meshtools.create_mesh(verts, faces, objname)
material = data.read()
#for i in material[0:6]: print "%02X" % ord(i),
#print
Blender.Window.DrawProgressBar(1.0, "Done") # clear progressbar
data.close()
end = time.clock()
seconds = "\nDone in %.2f %s" % (end-start, "seconds")
message += seconds
meshtools.print_boxed(message)
def fs_callback(filename):
read(filename)
Blender.Window.FileSelector(fs_callback, "Import Wings3D")
|