io_import_scene_lwo.py

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   2 #
   3 #  This program is free software; you can redistribute it and/or
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   5 #  as published by the Free Software Foundation; either version 2
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  15 #  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16 #
  17 # ##### END GPL LICENSE BLOCK #####
  18
  19 bl_info= {
  20     "name": "Import LightWave Objects",
  21     "author": "Ken Nign (Ken9)",
  22     "version": (1, 2),
  23     "blender": (2, 57, 0),
  24     "location": "File > Import > LightWave Object (.lwo)",
  25     "description": "Imports a LWO file including any UV, Morph and Color maps. "
  26                    "Can convert Skelegons to an Armature.",
  27     "warning": "",
  28     "wiki_url": "http://wiki.blender.org/index.php/Extensions:2.6/Py/"
  29                 "Scripts/Import-Export/LightWave_Object",
  30     "category": "Import-Export",
  31 }
  32
  33 # Copyright (c) Ken Nign 2010
  34 # ken@virginpi.com
  35 #
  36 # Version 1.3 - Aug 11, 2011
  37 #
  38 # Loads a LightWave .lwo object file, including the vertex maps such as
  39 # UV, Morph, Color and Weight maps.
  40 #
  41 # Will optionally create an Armature from an embedded Skelegon rig.
  42 #
  43 # Point orders are maintained so that .mdds can exchanged with other
  44 # 3D programs.
  45 #
  46 #
  47 # Notes:
  48 # NGons, polygons with more than 4 points are supported, but are
  49 # added (as triangles) after the vertex maps have been applied. Thus they
  50 # won't contain all the vertex data that the original ngon had.
  51 #
  52 # Blender is limited to only 8 UV Texture and 8 Vertex Color maps,
  53 # thus only the first 8 of each can be imported.
  54 #
  55 # History:
  56 #
  57 # 1.3 Fixed CC Edge Weight loading.
  58 #
  59 # 1.2 Added Absolute Morph and CC Edge Weight support.
  60 #     Made edge creation safer.
  61 # 1.0 First Release
  62
  63
  64 import os
  65 import struct
  66 import chunk
  67
  68 import bpy
  69 import mathutils
  70 from mathutils.geometry import tessellate_polygon
  71
  72
  73 class _obj_layer(object):
  74     __slots__ = (
  75         "name",
  76         "index",
  77         "parent_index",
  78         "pivot",
  79         "pols",
  80         "bones",
  81         "bone_names",
  82         "bone_rolls",
  83         "pnts",
  84         "wmaps",
  85         "colmaps",
  86         "uvmaps",
  87         "morphs",
  88         "edge_weights",
  89         "surf_tags",
  90         "has_subds",
  91         )
  92     def __init__(self):
  93         self.name= ""
  94         self.index= -1
  95         self.parent_index= -1
  96         self.pivot= [0, 0, 0]
  97         self.pols= []
  98         self.bones= []
  99         self.bone_names= {}
 100         self.bone_rolls= {}
 101         self.pnts= []
 102         self.wmaps= {}
 103         self.colmaps= {}
 104         self.uvmaps= {}
 105         self.morphs= {}
 106         self.edge_weights= {}
 107         self.surf_tags= {}
 108         self.has_subds= False
 109
 110
 111 class _obj_surf(object):
 112     __slots__ = (
 113         "bl_mat",
 114         "name",
 115         "source_name",
 116         "colr",
 117         "diff",
 118         "lumi",
 119         "spec",
 120         "refl",
 121         "rblr",
 122         "tran",
 123         "rind",
 124         "tblr",
 125         "trnl",
 126         "glos",
 127         "shrp",
 128         "smooth",
 129         )
 130
 131     def __init__(self):
 132         self.bl_mat= None
 133         self.name= "Default"
 134         self.source_name= ""
 135         self.colr= [1.0, 1.0, 1.0]
 136         self.diff= 1.0   # Diffuse
 137         self.lumi= 0.0   # Luminosity
 138         self.spec= 0.0   # Specular
 139         self.refl= 0.0   # Reflectivity
 140         self.rblr= 0.0   # Reflection Bluring
 141         self.tran= 0.0   # Transparency (the opposite of Blender's Alpha value)
 142         self.rind= 1.0   # RT Transparency IOR
 143         self.tblr= 0.0   # Refraction Bluring
 144         self.trnl= 0.0   # Translucency
 145         self.glos= 0.4   # Glossiness
 146         self.shrp= 0.0   # Diffuse Sharpness
 147         self.smooth= False  # Surface Smoothing
 148
 149
 150 def load_lwo(filename,
 151              context,
 152              ADD_SUBD_MOD=True,
 153              LOAD_HIDDEN=False,
 154              SKEL_TO_ARM=True,
 155              USE_EXISTING_MATERIALS=False):
 156     """Read the LWO file, hand off to version specific function."""
 157     name, ext= os.path.splitext(os.path.basename(filename))
 158     file= open(filename, 'rb')
 159
 160     try:
 161         header, chunk_size, chunk_name = struct.unpack(">4s1L4s", file.read(12))
 162     except:
 163         print("Error parsing file header!")
 164         file.close()
 165         return
 166
 167     layers= []
 168     surfs= {}
 169     tags= []
 170     # Gather the object data using the version specific handler.
 171     if chunk_name == b'LWO2':
 172         read_lwo2(file, filename, layers, surfs, tags, ADD_SUBD_MOD, LOAD_HIDDEN, SKEL_TO_ARM)
 173     elif chunk_name == b'LWOB' or chunk_name == b'LWLO':
 174         # LWOB and LWLO are the old format, LWLO is a layered object.
 175         read_lwob(file, filename, layers, surfs, tags, ADD_SUBD_MOD)
 176     else:
 177         print("Not a supported file type!")
 178         file.close()
 179         return
 180
 181     file.close()
 182
 183     # With the data gathered, build the object(s).
 184     build_objects(layers, surfs, tags, name, ADD_SUBD_MOD, SKEL_TO_ARM, USE_EXISTING_MATERIALS)
 185
 186     layers= None
 187     surfs.clear()
 188     tags= None
 189
 190
 191 def read_lwo2(file, filename, layers, surfs, tags, add_subd_mod, load_hidden, skel_to_arm):
 192     """Read version 2 file, LW 6+."""
 193     handle_layer= True
 194     last_pols_count= 0
 195     just_read_bones= False
 196     print("Importing LWO: " + filename + "\nLWO v2 Format")
 197
 198     while True:
 199         try:
 200             rootchunk = chunk.Chunk(file)
 201         except EOFError:
 202             break
 203
 204         if rootchunk.chunkname == b'TAGS':
 205             read_tags(rootchunk.read(), tags)
 206         elif rootchunk.chunkname == b'LAYR':
 207             handle_layer= read_layr(rootchunk.read(), layers, load_hidden)
 208         elif rootchunk.chunkname == b'PNTS' and handle_layer:
 209             read_pnts(rootchunk.read(), layers)
 210         elif rootchunk.chunkname == b'VMAP' and handle_layer:
 211             vmap_type = rootchunk.read(4)
 212
 213             if vmap_type == b'WGHT':
 214                 read_weightmap(rootchunk.read(), layers)
 215             elif vmap_type == b'MORF':
 216                 read_morph(rootchunk.read(), layers, False)
 217             elif vmap_type == b'SPOT':
 218                 read_morph(rootchunk.read(), layers, True)
 219             elif vmap_type == b'TXUV':
 220                 read_uvmap(rootchunk.read(), layers)
 221             elif vmap_type == b'RGB ' or vmap_type == b'RGBA':
 222                 read_colmap(rootchunk.read(), layers)
 223             else:
 224                 rootchunk.skip()
 225
 226         elif rootchunk.chunkname == b'VMAD' and handle_layer:
 227             vmad_type= rootchunk.read(4)
 228
 229             if vmad_type == b'TXUV':
 230                 read_uv_vmad(rootchunk.read(), layers, last_pols_count)
 231             elif vmad_type == b'RGB ' or vmad_type == b'RGBA':
 232                 read_color_vmad(rootchunk.read(), layers, last_pols_count)
 233             elif vmad_type == b'WGHT':
 234                 # We only read the Edge Weight map if it's there.
 235                 read_weight_vmad(rootchunk.read(), layers)
 236             else:
 237                 rootchunk.skip()
 238
 239         elif rootchunk.chunkname == b'POLS' and handle_layer:
 240             face_type = rootchunk.read(4)
 241             just_read_bones= False
 242             # PTCH is LW's Subpatches, SUBD is CatmullClark.
 243             if (face_type == b'FACE' or face_type == b'PTCH' or
 244                 face_type == b'SUBD') and handle_layer:
 245                 last_pols_count= read_pols(rootchunk.read(), layers)
 246                 if face_type != b'FACE':
 247                     layers[-1].has_subds= True
 248             elif face_type == b'BONE' and handle_layer:
 249                 read_bones(rootchunk.read(), layers)
 250                 just_read_bones= True
 251             else:
 252                 rootchunk.skip()
 253
 254         elif rootchunk.chunkname == b'PTAG' and handle_layer:
 255             tag_type,= struct.unpack("4s", rootchunk.read(4))
 256             if tag_type == b'SURF' and not just_read_bones:
 257                 # Ignore the surface data if we just read a bones chunk.
 258                 read_surf_tags(rootchunk.read(), layers, last_pols_count)
 259
 260             elif skel_to_arm:
 261                 if tag_type == b'BNUP':
 262                     read_bone_tags(rootchunk.read(), layers, tags, 'BNUP')
 263                 elif tag_type == b'BONE':
 264                     read_bone_tags(rootchunk.read(), layers, tags, 'BONE')
 265                 else:
 266                     rootchunk.skip()
 267             else:
 268                 rootchunk.skip()
 269         elif rootchunk.chunkname == b'SURF':
 270             read_surf(rootchunk.read(), surfs)
 271         else:
 272             #if handle_layer:
 273                 #print("Skipping Chunk:", rootchunk.chunkname)
 274             rootchunk.skip()
 275
 276
 277 def read_lwob(file, filename, layers, surfs, tags, add_subd_mod):
 278     """Read version 1 file, LW < 6."""
 279     last_pols_count= 0
 280     print("Importing LWO: " + filename + "\nLWO v1 Format")
 281
 282     while True:
 283         try:
 284             rootchunk = chunk.Chunk(file)
 285         except EOFError:
 286             break
 287
 288         if rootchunk.chunkname == b'SRFS':
 289             read_tags(rootchunk.read(), tags)
 290         elif rootchunk.chunkname == b'LAYR':
 291             read_layr_5(rootchunk.read(), layers)
 292         elif rootchunk.chunkname == b'PNTS':
 293             if len(layers) == 0:
 294                 # LWOB files have no LAYR chunk to set this up.
 295                 nlayer= _obj_layer()
 296                 nlayer.name= "Layer 1"
 297                 layers.append(nlayer)
 298             read_pnts(rootchunk.read(), layers)
 299         elif rootchunk.chunkname == b'POLS':
 300             last_pols_count= read_pols_5(rootchunk.read(), layers)
 301         elif rootchunk.chunkname == b'PCHS':
 302             last_pols_count= read_pols_5(rootchunk.read(), layers)
 303             layers[-1].has_subds= True
 304         elif rootchunk.chunkname == b'PTAG':
 305             tag_type,= struct.unpack("4s", rootchunk.read(4))
 306             if tag_type == b'SURF':
 307                 read_surf_tags_5(rootchunk.read(), layers, last_pols_count)
 308             else:
 309                 rootchunk.skip()
 310         elif rootchunk.chunkname == b'SURF':
 311             read_surf_5(rootchunk.read(), surfs)
 312         else:
 313             # For Debugging \/.
 314             #if handle_layer:
 315                 #print("Skipping Chunk: ", rootchunk.chunkname)
 316             rootchunk.skip()
 317
 318
 319 def read_lwostring(raw_name):
 320     """Parse a zero-padded string."""
 321
 322     i = raw_name.find(b'\0')
 323     name_len = i + 1
 324     if name_len % 2 == 1:   # Test for oddness.
 325         name_len += 1
 326
 327     if i > 0:
 328         # Some plugins put non-text strings in the tags chunk.
 329         name = raw_name[0:i].decode("utf-8", "ignore")
 330     else:
 331         name = ""
 332
 333     return name, name_len
 334
 335
 336 def read_vx(pointdata):
 337     """Read a variable-length index."""
 338     if pointdata[0] != 255:
 339         index= pointdata[0]*256 + pointdata[1]
 340         size= 2
 341     else:
 342         index= pointdata[1]*65536 + pointdata[2]*256 + pointdata[3]
 343         size= 4
 344
 345     return index, size
 346
 347
 348 def read_tags(tag_bytes, object_tags):
 349     """Read the object's Tags chunk."""
 350     offset= 0
 351     chunk_len= len(tag_bytes)
 352
 353     while offset < chunk_len:
 354         tag, tag_len= read_lwostring(tag_bytes[offset:])
 355         offset+= tag_len
 356         object_tags.append(tag)
 357
 358
 359 def read_layr(layr_bytes, object_layers, load_hidden):
 360     """Read the object's layer data."""
 361     new_layr= _obj_layer()
 362     new_layr.index, flags= struct.unpack(">HH", layr_bytes[0:4])
 363
 364     if flags > 0 and not load_hidden:
 365         return False
 366
 367     print("Reading Object Layer")
 368     offset= 4
 369     pivot= struct.unpack(">fff", layr_bytes[offset:offset+12])
 370     # Swap Y and Z to match Blender's pitch.
 371     new_layr.pivot= [pivot[0], pivot[2], pivot[1]]
 372     offset+= 12
 373     layr_name, name_len = read_lwostring(layr_bytes[offset:])
 374     offset+= name_len
 375
 376     if layr_name:
 377         new_layr.name= layr_name
 378     else:
 379         new_layr.name= "Layer %d" % (new_layr.index + 1)
 380
 381     if len(layr_bytes) == offset+2:
 382         new_layr.parent_index,= struct.unpack(">h", layr_bytes[offset:offset+2])
 383
 384     object_layers.append(new_layr)
 385     return True
 386
 387
 388 def read_layr_5(layr_bytes, object_layers):
 389     """Read the object's layer data."""
 390     # XXX: Need to check what these two exactly mean for a LWOB/LWLO file.
 391     new_layr= _obj_layer()
 392     new_layr.index, flags= struct.unpack(">HH", layr_bytes[0:4])
 393
 394     print("Reading Object Layer")
 395     offset= 4
 396     layr_name, name_len = read_lwostring(layr_bytes[offset:])
 397     offset+= name_len
 398
 399     if name_len > 2 and layr_name != 'noname':
 400         new_layr.name= layr_name
 401     else:
 402         new_layr.name= "Layer %d" % new_layr.index
 403
 404     object_layers.append(new_layr)
 405
 406
 407 def read_pnts(pnt_bytes, object_layers):
 408     """Read the layer's points."""
 409     print("\tReading Layer ("+object_layers[-1].name+") Points")
 410     offset= 0
 411     chunk_len= len(pnt_bytes)
 412
 413     while offset < chunk_len:
 414         pnts= struct.unpack(">fff", pnt_bytes[offset:offset+12])
 415         offset+= 12
 416         # Re-order the points so that the mesh has the right pitch,
 417         # the pivot already has the correct order.
 418         pnts= [pnts[0] - object_layers[-1].pivot[0],\
 419                pnts[2] - object_layers[-1].pivot[1],\
 420                pnts[1] - object_layers[-1].pivot[2]]
 421         object_layers[-1].pnts.append(pnts)
 422
 423
 424 def read_weightmap(weight_bytes, object_layers):
 425     """Read a weight map's values."""
 426     chunk_len= len(weight_bytes)
 427     offset= 2
 428     name, name_len= read_lwostring(weight_bytes[offset:])
 429     offset+= name_len
 430     weights= []
 431
 432     while offset < chunk_len:
 433         pnt_id, pnt_id_len= read_vx(weight_bytes[offset:offset+4])
 434         offset+= pnt_id_len
 435         value,= struct.unpack(">f", weight_bytes[offset:offset+4])
 436         offset+= 4
 437         weights.append([pnt_id, value])
 438
 439     object_layers[-1].wmaps[name]= weights
 440
 441
 442 def read_morph(morph_bytes, object_layers, is_abs):
 443     """Read an endomorph's relative or absolute displacement values."""
 444     chunk_len= len(morph_bytes)
 445     offset= 2
 446     name, name_len= read_lwostring(morph_bytes[offset:])
 447     offset+= name_len
 448     deltas= []
 449
 450     while offset < chunk_len:
 451         pnt_id, pnt_id_len= read_vx(morph_bytes[offset:offset+4])
 452         offset+= pnt_id_len
 453         pos= struct.unpack(">fff", morph_bytes[offset:offset+12])
 454         offset+= 12
 455         pnt= object_layers[-1].pnts[pnt_id]
 456
 457         if is_abs:
 458             deltas.append([pnt_id, pos[0], pos[2], pos[1]])
 459         else:
 460             # Swap the Y and Z to match Blender's pitch.
 461             deltas.append([pnt_id, pnt[0]+pos[0], pnt[1]+pos[2], pnt[2]+pos[1]])
 462
 463         object_layers[-1].morphs[name]= deltas
 464
 465
 466 def read_colmap(col_bytes, object_layers):
 467     """Read the RGB or RGBA color map."""
 468     chunk_len= len(col_bytes)
 469     dia,= struct.unpack(">H", col_bytes[0:2])
 470     offset= 2
 471     name, name_len= read_lwostring(col_bytes[offset:])
 472     offset+= name_len
 473     colors= {}
 474
 475     if dia == 3:
 476         while offset < chunk_len:
 477             pnt_id, pnt_id_len= read_vx(col_bytes[offset:offset+4])
 478             offset+= pnt_id_len
 479             col= struct.unpack(">fff", col_bytes[offset:offset+12])
 480             offset+= 12
 481             colors[pnt_id]= (col[0], col[1], col[2])
 482     elif dia == 4:
 483         while offset < chunk_len:
 484             pnt_id, pnt_id_len= read_vx(col_bytes[offset:offset+4])
 485             offset+= pnt_id_len
 486             col= struct.unpack(">ffff", col_bytes[offset:offset+16])
 487             offset+= 16
 488             colors[pnt_id]= (col[0], col[1], col[2])
 489
 490     if name in object_layers[-1].colmaps:
 491         if "PointMap" in object_layers[-1].colmaps[name]:
 492             object_layers[-1].colmaps[name]["PointMap"].update(colors)
 493         else:
 494             object_layers[-1].colmaps[name]["PointMap"]= colors
 495     else:
 496         object_layers[-1].colmaps[name]= dict(PointMap=colors)
 497
 498
 499 def read_color_vmad(col_bytes, object_layers, last_pols_count):
 500     """Read the Discontinous (per-polygon) RGB values."""
 501     chunk_len= len(col_bytes)
 502     dia,= struct.unpack(">H", col_bytes[0:2])
 503     offset= 2
 504     name, name_len= read_lwostring(col_bytes[offset:])
 505     offset+= name_len
 506     colors= {}
 507     abs_pid= len(object_layers[-1].pols) - last_pols_count
 508
 509     if dia == 3:
 510         while offset < chunk_len:
 511             pnt_id, pnt_id_len= read_vx(col_bytes[offset:offset+4])
 512             offset+= pnt_id_len
 513             pol_id, pol_id_len= read_vx(col_bytes[offset:offset+4])
 514             offset+= pol_id_len
 515
 516             # The PolyID in a VMAD can be relative, this offsets it.
 517             pol_id+= abs_pid
 518             col= struct.unpack(">fff", col_bytes[offset:offset+12])
 519             offset+= 12
 520             if pol_id in colors:
 521                 colors[pol_id][pnt_id]= (col[0], col[1], col[2])
 522             else:
 523                 colors[pol_id]= dict({pnt_id: (col[0], col[1], col[2])})
 524     elif dia == 4:
 525         while offset < chunk_len:
 526             pnt_id, pnt_id_len= read_vx(col_bytes[offset:offset+4])
 527             offset+= pnt_id_len
 528             pol_id, pol_id_len= read_vx(col_bytes[offset:offset+4])
 529             offset+= pol_id_len
 530
 531             pol_id+= abs_pid
 532             col= struct.unpack(">ffff", col_bytes[offset:offset+16])
 533             offset+= 16
 534             if pol_id in colors:
 535                 colors[pol_id][pnt_id]= (col[0], col[1], col[2])
 536             else:
 537                 colors[pol_id]= dict({pnt_id: (col[0], col[1], col[2])})
 538
 539     if name in object_layers[-1].colmaps:
 540         if "FaceMap" in object_layers[-1].colmaps[name]:
 541             object_layers[-1].colmaps[name]["FaceMap"].update(colors)
 542         else:
 543             object_layers[-1].colmaps[name]["FaceMap"]= colors
 544     else:
 545         object_layers[-1].colmaps[name]= dict(FaceMap=colors)
 546
 547
 548 def read_uvmap(uv_bytes, object_layers):
 549     """Read the simple UV coord values."""
 550     chunk_len= len(uv_bytes)
 551     offset= 2
 552     name, name_len= read_lwostring(uv_bytes[offset:])
 553     offset+= name_len
 554     uv_coords= {}
 555
 556     while offset < chunk_len:
 557         pnt_id, pnt_id_len= read_vx(uv_bytes[offset:offset+4])
 558         offset+= pnt_id_len
 559         pos= struct.unpack(">ff", uv_bytes[offset:offset+8])
 560         offset+= 8
 561         uv_coords[pnt_id]= (pos[0], pos[1])
 562
 563     if name in object_layers[-1].uvmaps:
 564         if "PointMap" in object_layers[-1].uvmaps[name]:
 565             object_layers[-1].uvmaps[name]["PointMap"].update(uv_coords)
 566         else:
 567             object_layers[-1].uvmaps[name]["PointMap"]= uv_coords
 568     else:
 569         object_layers[-1].uvmaps[name]= dict(PointMap=uv_coords)
 570
 571
 572 def read_uv_vmad(uv_bytes, object_layers, last_pols_count):
 573     """Read the Discontinous (per-polygon) uv values."""
 574     chunk_len= len(uv_bytes)
 575     offset= 2
 576     name, name_len= read_lwostring(uv_bytes[offset:])
 577     offset+= name_len
 578     uv_coords= {}
 579     abs_pid= len(object_layers[-1].pols) - last_pols_count
 580
 581     while offset < chunk_len:
 582         pnt_id, pnt_id_len= read_vx(uv_bytes[offset:offset+4])
 583         offset+= pnt_id_len
 584         pol_id, pol_id_len= read_vx(uv_bytes[offset:offset+4])
 585         offset+= pol_id_len
 586
 587         pol_id+= abs_pid
 588         pos= struct.unpack(">ff", uv_bytes[offset:offset+8])
 589         offset+= 8
 590         if pol_id in uv_coords:
 591             uv_coords[pol_id][pnt_id]= (pos[0], pos[1])
 592         else:
 593             uv_coords[pol_id]= dict({pnt_id: (pos[0], pos[1])})
 594
 595     if name in object_layers[-1].uvmaps:
 596         if "FaceMap" in object_layers[-1].uvmaps[name]:
 597             object_layers[-1].uvmaps[name]["FaceMap"].update(uv_coords)
 598         else:
 599             object_layers[-1].uvmaps[name]["FaceMap"]= uv_coords
 600     else:
 601         object_layers[-1].uvmaps[name]= dict(FaceMap=uv_coords)
 602
 603
 604 def read_weight_vmad(ew_bytes, object_layers):
 605     """Read the VMAD Weight values."""
 606     chunk_len= len(ew_bytes)
 607     offset= 2
 608     name, name_len= read_lwostring(ew_bytes[offset:])
 609     if name != "Edge Weight":
 610         return  # We just want the Catmull-Clark edge weights
 611
 612     offset+= name_len
 613     # Some info: LW stores a face's points in a clock-wize order (with the
 614     # normal pointing at you). This gives edges a 'direction' which is used
 615     # when it comes to storing CC edge weight values. The weight is given
 616     # to the point preceding the edge that the weight belongs to.
 617     while offset < chunk_len:
 618         pnt_id, pnt_id_len = read_vx(ew_bytes[offset:offset+4])
 619         offset+= pnt_id_len
 620         pol_id, pol_id_len= read_vx(ew_bytes[offset:offset+4])
 621         offset+= pol_id_len
 622         weight,= struct.unpack(">f", ew_bytes[offset:offset+4])
 623         offset+= 4
 624
 625         face_pnts= object_layers[-1].pols[pol_id]
 626         try:
 627             # Find the point's location in the polygon's point list
 628             first_idx= face_pnts.index(pnt_id)
 629         except:
 630             continue
 631
 632         # Then get the next point in the list, or wrap around to the first
 633         if first_idx == len(face_pnts) - 1:
 634             second_pnt= face_pnts[0]
 635         else:
 636             second_pnt= face_pnts[first_idx + 1]
 637
 638         object_layers[-1].edge_weights["{0} {1}".format(second_pnt, pnt_id)]= weight
 639
 640
 641 def read_pols(pol_bytes, object_layers):
 642     """Read the layer's polygons, each one is just a list of point indexes."""
 643     print("\tReading Layer ("+object_layers[-1].name+") Polygons")
 644     offset= 0
 645     pols_count = len(pol_bytes)
 646     old_pols_count= len(object_layers[-1].pols)
 647
 648     while offset < pols_count:
 649         pnts_count,= struct.unpack(">H", pol_bytes[offset:offset+2])
 650         offset+= 2
 651         all_face_pnts= []
 652         for j in range(pnts_count):
 653             face_pnt, data_size= read_vx(pol_bytes[offset:offset+4])
 654             offset+= data_size
 655             all_face_pnts.append(face_pnt)
 656
 657         object_layers[-1].pols.append(all_face_pnts)
 658
 659     return len(object_layers[-1].pols) - old_pols_count
 660
 661
 662 def read_pols_5(pol_bytes, object_layers):
 663     """
 664     Read the polygons, each one is just a list of point indexes.
 665     But it also includes the surface index.
 666     """
 667     print("\tReading Layer ("+object_layers[-1].name+") Polygons")
 668     offset= 0
 669     chunk_len= len(pol_bytes)
 670     old_pols_count= len(object_layers[-1].pols)
 671     poly= 0
 672
 673     while offset < chunk_len:
 674         pnts_count,= struct.unpack(">H", pol_bytes[offset:offset+2])
 675         offset+= 2
 676         all_face_pnts= []
 677         for j in range(pnts_count):
 678             face_pnt,= struct.unpack(">H", pol_bytes[offset:offset+2])
 679             offset+= 2
 680             all_face_pnts.append(face_pnt)
 681
 682         object_layers[-1].pols.append(all_face_pnts)
 683         sid,= struct.unpack(">h", pol_bytes[offset:offset+2])
 684         offset+= 2
 685         sid= abs(sid) - 1
 686         if sid not in object_layers[-1].surf_tags:
 687             object_layers[-1].surf_tags[sid]= []
 688         object_layers[-1].surf_tags[sid].append(poly)
 689         poly+= 1
 690
 691     return len(object_layers[-1].pols) - old_pols_count
 692
 693
 694 def read_bones(bone_bytes, object_layers):
 695     """Read the layer's skelegons."""
 696     print("\tReading Layer ("+object_layers[-1].name+") Bones")
 697     offset= 0
 698     bones_count = len(bone_bytes)
 699
 700     while offset < bones_count:
 701         pnts_count,= struct.unpack(">H", bone_bytes[offset:offset+2])
 702         offset+= 2
 703         all_bone_pnts= []
 704         for j in range(pnts_count):
 705             bone_pnt, data_size= read_vx(bone_bytes[offset:offset+4])
 706             offset+= data_size
 707             all_bone_pnts.append(bone_pnt)
 708
 709         object_layers[-1].bones.append(all_bone_pnts)
 710
 711
 712 def read_bone_tags(tag_bytes, object_layers, object_tags, type):
 713     """Read the bone name or roll tags."""
 714     offset= 0
 715     chunk_len= len(tag_bytes)
 716
 717     if type == 'BONE':
 718         bone_dict= object_layers[-1].bone_names
 719     elif type == 'BNUP':
 720         bone_dict= object_layers[-1].bone_rolls
 721     else:
 722         return
 723
 724     while offset < chunk_len:
 725         pid, pid_len= read_vx(tag_bytes[offset:offset+4])
 726         offset+= pid_len
 727         tid,= struct.unpack(">H", tag_bytes[offset:offset+2])
 728         offset+= 2
 729         bone_dict[pid]= object_tags[tid]
 730
 731
 732 def read_surf_tags(tag_bytes, object_layers, last_pols_count):
 733     """Read the list of PolyIDs and tag indexes."""
 734     print("\tReading Layer ("+object_layers[-1].name+") Surface Assignments")
 735     offset= 0
 736     chunk_len= len(tag_bytes)
 737
 738     # Read in the PolyID/Surface Index pairs.
 739     abs_pid= len(object_layers[-1].pols) - last_pols_count
 740     while offset < chunk_len:
 741         pid, pid_len= read_vx(tag_bytes[offset:offset+4])
 742         offset+= pid_len
 743         sid,= struct.unpack(">H", tag_bytes[offset:offset+2])
 744         offset+=2
 745         if sid not in object_layers[-1].surf_tags:
 746             object_layers[-1].surf_tags[sid]= []
 747         object_layers[-1].surf_tags[sid].append(pid + abs_pid)
 748
 749
 750 def read_surf(surf_bytes, object_surfs):
 751     """Read the object's surface data."""
 752     if len(object_surfs) == 0:
 753         print("Reading Object Surfaces")
 754
 755     surf= _obj_surf()
 756     name, name_len= read_lwostring(surf_bytes)
 757     if len(name) != 0:
 758         surf.name = name
 759
 760     # We have to read this, but we won't use it...yet.
 761     s_name, s_name_len= read_lwostring(surf_bytes[name_len:])
 762     offset= name_len+s_name_len
 763     block_size= len(surf_bytes)
 764     while offset < block_size:
 765         subchunk_name,= struct.unpack("4s", surf_bytes[offset:offset+4])
 766         offset+= 4
 767         subchunk_len,= struct.unpack(">H", surf_bytes[offset:offset+2])
 768         offset+= 2
 769
 770         # Now test which subchunk it is.
 771         if subchunk_name == b'COLR':
 772             surf.colr= struct.unpack(">fff", surf_bytes[offset:offset+12])
 773             # Don't bother with any envelopes for now.
 774
 775         elif subchunk_name == b'DIFF':
 776             surf.diff,= struct.unpack(">f", surf_bytes[offset:offset+4])
 777
 778         elif subchunk_name == b'LUMI':
 779             surf.lumi,= struct.unpack(">f", surf_bytes[offset:offset+4])
 780
 781         elif subchunk_name == b'SPEC':
 782             surf.spec,= struct.unpack(">f", surf_bytes[offset:offset+4])
 783
 784         elif subchunk_name == b'REFL':
 785             surf.refl,= struct.unpack(">f", surf_bytes[offset:offset+4])
 786
 787         elif subchunk_name == b'RBLR':
 788             surf.rblr,= struct.unpack(">f", surf_bytes[offset:offset+4])
 789
 790         elif subchunk_name == b'TRAN':
 791             surf.tran,= struct.unpack(">f", surf_bytes[offset:offset+4])
 792
 793         elif subchunk_name == b'RIND':
 794             surf.rind,= struct.unpack(">f", surf_bytes[offset:offset+4])
 795
 796         elif subchunk_name == b'TBLR':
 797             surf.tblr,= struct.unpack(">f", surf_bytes[offset:offset+4])
 798
 799         elif subchunk_name == b'TRNL':
 800             surf.trnl,= struct.unpack(">f", surf_bytes[offset:offset+4])
 801
 802         elif subchunk_name == b'GLOS':
 803             surf.glos,= struct.unpack(">f", surf_bytes[offset:offset+4])
 804
 805         elif subchunk_name == b'SHRP':
 806             surf.shrp,= struct.unpack(">f", surf_bytes[offset:offset+4])
 807
 808         elif subchunk_name == b'SMAN':
 809             s_angle,= struct.unpack(">f", surf_bytes[offset:offset+4])
 810             if s_angle > 0.0:
 811                 surf.smooth = True
 812
 813         offset+= subchunk_len
 814
 815     object_surfs[surf.name]= surf
 816
 817
 818 def read_surf_5(surf_bytes, object_surfs):
 819     """Read the object's surface data."""
 820     if len(object_surfs) == 0:
 821         print("Reading Object Surfaces")
 822
 823     surf= _obj_surf()
 824     name, name_len= read_lwostring(surf_bytes)
 825     if len(name) != 0:
 826         surf.name = name
 827
 828     offset= name_len
 829     chunk_len= len(surf_bytes)
 830     while offset < chunk_len:
 831         subchunk_name,= struct.unpack("4s", surf_bytes[offset:offset+4])
 832         offset+= 4
 833         subchunk_len,= struct.unpack(">H", surf_bytes[offset:offset+2])
 834         offset+= 2
 835
 836         # Now test which subchunk it is.
 837         if subchunk_name == b'COLR':
 838             color= struct.unpack(">BBBB", surf_bytes[offset:offset+4])
 839             surf.colr= [color[0] / 255.0, color[1] / 255.0, color[2] / 255.0]
 840
 841         elif subchunk_name == b'DIFF':
 842             surf.diff,= struct.unpack(">h", surf_bytes[offset:offset+2])
 843             surf.diff/= 256.0    # Yes, 256 not 255.
 844
 845         elif subchunk_name == b'LUMI':
 846             surf.lumi,= struct.unpack(">h", surf_bytes[offset:offset+2])
 847             surf.lumi/= 256.0
 848
 849         elif subchunk_name == b'SPEC':
 850             surf.spec,= struct.unpack(">h", surf_bytes[offset:offset+2])
 851             surf.spec/= 256.0
 852
 853         elif subchunk_name == b'REFL':
 854             surf.refl,= struct.unpack(">h", surf_bytes[offset:offset+2])
 855             surf.refl/= 256.0
 856
 857         elif subchunk_name == b'TRAN':
 858             surf.tran,= struct.unpack(">h", surf_bytes[offset:offset+2])
 859             surf.tran/= 256.0
 860
 861         elif subchunk_name == b'RIND':
 862             surf.rind,= struct.unpack(">f", surf_bytes[offset:offset+4])
 863
 864         elif subchunk_name == b'GLOS':
 865             surf.glos,= struct.unpack(">h", surf_bytes[offset:offset+2])
 866
 867         elif subchunk_name == b'SMAN':
 868             s_angle,= struct.unpack(">f", surf_bytes[offset:offset+4])
 869             if s_angle > 0.0:
 870                 surf.smooth = True
 871
 872         offset+= subchunk_len
 873
 874     object_surfs[surf.name]= surf
 875
 876
 877 def create_mappack(data, map_name, map_type):
 878     """Match the map data to faces."""
 879     pack= {}
 880
 881     def color_pointmap(map):
 882         for fi in range(len(data.pols)):
 883             if fi not in pack:
 884                 pack[fi]= []
 885             for pnt in data.pols[fi]:
 886                 if pnt in map:
 887                     pack[fi].append(map[pnt])
 888                 else:
 889                     pack[fi].append((1.0, 1.0, 1.0))
 890
 891     def color_facemap(map):
 892         for fi in range(len(data.pols)):
 893             if fi not in pack:
 894                 pack[fi]= []
 895                 for p in data.pols[fi]:
 896                     pack[fi].append((1.0, 1.0, 1.0))
 897             if fi in map:
 898                 for po in range(len(data.pols[fi])):
 899                     if data.pols[fi][po] in map[fi]:
 900                         pack[fi].insert(po, map[fi][data.pols[fi][po]])
 901                         del pack[fi][po+1]
 902
 903     def uv_pointmap(map):
 904         for fi in range(len(data.pols)):
 905             if fi not in pack:
 906                 pack[fi]= []
 907                 for p in data.pols[fi]:
 908                     pack[fi].append((-0.1,-0.1))
 909             for po in range(len(data.pols[fi])):
 910                 pnt_id= data.pols[fi][po]
 911                 if pnt_id in map:
 912                     pack[fi].insert(po, map[pnt_id])
 913                     del pack[fi][po+1]
 914
 915     def uv_facemap(map):
 916         for fi in range(len(data.pols)):
 917             if fi not in pack:
 918                 pack[fi]= []
 919                 for p in data.pols[fi]:
 920                     pack[fi].append((-0.1,-0.1))
 921             if fi in map:
 922                 for po in range(len(data.pols[fi])):
 923                     pnt_id= data.pols[fi][po]
 924                     if pnt_id in map[fi]:
 925                         pack[fi].insert(po, map[fi][pnt_id])
 926                         del pack[fi][po+1]
 927
 928     if map_type == "COLOR":
 929         # Look at the first map, is it a point or face map
 930         if "PointMap" in data.colmaps[map_name]:
 931             color_pointmap(data.colmaps[map_name]["PointMap"])
 932
 933         if "FaceMap" in data.colmaps[map_name]:
 934             color_facemap(data.colmaps[map_name]["FaceMap"])
 935     elif map_type == "UV":
 936         if "PointMap" in data.uvmaps[map_name]:
 937             uv_pointmap(data.uvmaps[map_name]["PointMap"])
 938
 939         if "FaceMap" in data.uvmaps[map_name]:
 940             uv_facemap(data.uvmaps[map_name]["FaceMap"])
 941
 942     return pack
 943
 944
 945 def build_armature(layer_data, bones):
 946     """Build an armature from the skelegon data in the mesh."""
 947     print("Building Armature")
 948
 949     # New Armatures include a default bone, remove it.
 950     bones.remove(bones[0])
 951
 952     # Now start adding the bones at the point locations.
 953     prev_bone= None
 954     for skb_idx in range(len(layer_data.bones)):
 955         if skb_idx in layer_data.bone_names:
 956             nb= bones.new(layer_data.bone_names[skb_idx])
 957         else:
 958             nb= bones.new("Bone")
 959
 960         nb.head= layer_data.pnts[layer_data.bones[skb_idx][0]]
 961         nb.tail= layer_data.pnts[layer_data.bones[skb_idx][1]]
 962
 963         if skb_idx in layer_data.bone_rolls:
 964             xyz= layer_data.bone_rolls[skb_idx].split(' ')
 965             vec= mathutils.Vector((float(xyz[0]), float(xyz[1]), float(xyz[2])))
 966             quat= vec.to_track_quat('Y', 'Z')
 967             nb.roll= max(quat.to_euler('YZX'))
 968             if nb.roll == 0.0:
 969                 nb.roll= min(quat.to_euler('YZX')) * -1
 970             # YZX order seems to produce the correct roll value.
 971         else:
 972             nb.roll= 0.0
 973
 974         if prev_bone is not None:
 975             if nb.head == prev_bone.tail:
 976                 nb.parent= prev_bone
 977
 978         nb.use_connect= True
 979         prev_bone= nb
 980
 981
 982 def build_objects(object_layers, object_surfs, object_tags, object_name, add_subd_mod, skel_to_arm, use_existing_materials):
 983     """Using the gathered data, create the objects."""
 984     ob_dict= {}  # Used for the parenting setup.
 985     print("Adding %d Materials" % len(object_surfs))
 986
 987     for surf_key in object_surfs:
 988         surf_data= object_surfs[surf_key]
 989         surf_data.bl_mat = bpy.data.materials.get(surf_data.name) if use_existing_materials else None
 990         if surf_data.bl_mat is None:
 991             surf_data.bl_mat= bpy.data.materials.new(surf_data.name)
 992             surf_data.bl_mat.diffuse_color= (surf_data.colr[:])
 993             surf_data.bl_mat.diffuse_intensity= surf_data.diff
 994             surf_data.bl_mat.emit= surf_data.lumi
 995             surf_data.bl_mat.specular_intensity= surf_data.spec
 996             if surf_data.refl != 0.0:
 997                 surf_data.bl_mat.raytrace_mirror.use= True
 998             surf_data.bl_mat.raytrace_mirror.reflect_factor= surf_data.refl
 999             surf_data.bl_mat.raytrace_mirror.gloss_factor= 1.0-surf_data.rblr
1000             if surf_data.tran != 0.0:
1001                 surf_data.bl_mat.use_transparency= True
1002                 surf_data.bl_mat.transparency_method= 'RAYTRACE'
1003             surf_data.bl_mat.alpha= 1.0 - surf_data.tran
1004             surf_data.bl_mat.raytrace_transparency.ior= surf_data.rind
1005             surf_data.bl_mat.raytrace_transparency.gloss_factor= 1.0 - surf_data.tblr
1006             surf_data.bl_mat.translucency= surf_data.trnl
1007             surf_data.bl_mat.specular_hardness= int(4*((10*surf_data.glos)*(10*surf_data.glos)))+4
1008         # The Gloss is as close as possible given the differences.
1009
1010     # Single layer objects use the object file's name instead.
1011     if len(object_layers) and object_layers[-1].name == 'Layer 1':
1012         object_layers[-1].name= object_name
1013         print("Building '%s' Object" % object_name)
1014     else:
1015         print("Building %d Objects" % len(object_layers))
1016
1017     # Before adding any meshes or armatures go into Object mode.
1018     if bpy.ops.object.mode_set.poll():
1019         bpy.ops.object.mode_set(mode='OBJECT')
1020
1021     for layer_data in object_layers:
1022         me= bpy.data.meshes.new(layer_data.name)
1023         me.vertices.add(len(layer_data.pnts))
1024         me.tessfaces.add(len(layer_data.pols))
1025         # for vi in range(len(layer_data.pnts)):
1026         #     me.vertices[vi].co= layer_data.pnts[vi]
1027
1028         # faster, would be faster again to use an array
1029         me.vertices.foreach_set("co", [axis for co in layer_data.pnts for axis in co])
1030
1031         ngons= {}   # To keep the FaceIdx consistent, handle NGons later.
1032         edges= []   # Holds the FaceIdx of the 2-point polys.
1033         for fi, fpol in enumerate(layer_data.pols):
1034             fpol.reverse()   # Reversing gives correct normal directions
1035             # PointID 0 in the last element causes Blender to think it's un-used.
1036             if fpol[-1] == 0:
1037                 fpol.insert(0, fpol[-1])
1038                 del fpol[-1]
1039
1040             vlen= len(fpol)
1041             if vlen == 3 or vlen == 4:
1042                 for i in range(vlen):
1043                     me.tessfaces[fi].vertices_raw[i]= fpol[i]
1044             elif vlen == 2:
1045                 edges.append(fi)
1046             elif vlen != 1:
1047                 ngons[fi]= fpol  # Deal with them later
1048
1049         ob= bpy.data.objects.new(layer_data.name, me)
1050         bpy.context.scene.objects.link(ob)
1051         ob_dict[layer_data.index]= [ob, layer_data.parent_index]
1052
1053         # Move the object so the pivot is in the right place.
1054         ob.location= layer_data.pivot
1055
1056         # Create the Material Slots and assign the MatIndex to the correct faces.
1057         mat_slot= 0
1058         for surf_key in layer_data.surf_tags:
1059             if object_tags[surf_key] in object_surfs:
1060                 me.materials.append(object_surfs[object_tags[surf_key]].bl_mat)
1061
1062                 for fi in layer_data.surf_tags[surf_key]:
1063                     me.tessfaces[fi].material_index= mat_slot
1064                     me.tessfaces[fi].use_smooth= object_surfs[object_tags[surf_key]].smooth
1065
1066                 mat_slot+=1
1067
1068         # Create the Vertex Groups (LW's Weight Maps).
1069         if len(layer_data.wmaps) > 0:
1070             print("Adding %d Vertex Groups" % len(layer_data.wmaps))
1071             for wmap_key in layer_data.wmaps:
1072                 vgroup= ob.vertex_groups.new()
1073                 vgroup.name= wmap_key
1074                 wlist= layer_data.wmaps[wmap_key]
1075                 for pvp in wlist:
1076                     vgroup.add((pvp[0], ), pvp[1], 'REPLACE')
1077
1078         # Create the Shape Keys (LW's Endomorphs).
1079         if len(layer_data.morphs) > 0:
1080             print("Adding %d Shapes Keys" % len(layer_data.morphs))
1081             ob.shape_key_add('Basis')   # Got to have a Base Shape.
1082             for morph_key in layer_data.morphs:
1083                 skey= ob.shape_key_add(morph_key)
1084                 dlist= layer_data.morphs[morph_key]
1085                 for pdp in dlist:
1086                     me.shape_keys.key_blocks[skey.name].data[pdp[0]].co= [pdp[1], pdp[2], pdp[3]]
1087
1088         # Create the Vertex Color maps.
1089         if len(layer_data.colmaps) > 0:
1090             print("Adding %d Vertex Color Maps" % len(layer_data.colmaps))
1091             for cmap_key in layer_data.colmaps:
1092                 map_pack= create_mappack(layer_data, cmap_key, "COLOR")
1093                 me.vertex_colors.new(cmap_key)
1094                 vcol= me.tessface_vertex_colors[-1]
1095                 if not vcol or not vcol.data:
1096                     break
1097                 for fi in map_pack:
1098                     if fi > len(vcol.data):
1099                         continue
1100                     face= map_pack[fi]
1101                     colf= vcol.data[fi]
1102
1103                     if len(face) > 2:
1104                         colf.color1= face[0]
1105                         colf.color2= face[1]
1106                         colf.color3= face[2]
1107                     if len(face) == 4:
1108                         colf.color4= face[3]
1109
1110         # Create the UV Maps.
1111         if len(layer_data.uvmaps) > 0:
1112             print("Adding %d UV Textures" % len(layer_data.uvmaps))
1113             for uvmap_key in layer_data.uvmaps:
1114                 map_pack= create_mappack(layer_data, uvmap_key, "UV")
1115                 me.uv_textures.new(name=uvmap_key)
1116                 uvm= me.tessface_uv_textures[-1]
1117                 if not uvm or not uvm.data:
1118                     break
1119                 for fi in map_pack:
1120                     if fi > len(uvm.data):
1121                         continue
1122                     face= map_pack[fi]
1123                     uvf= uvm.data[fi]
1124
1125                     if len(face) > 2:
1126                         uvf.uv1= face[0]
1127                         uvf.uv2= face[1]
1128                         uvf.uv3= face[2]
1129                     if len(face) == 4:
1130                         uvf.uv4= face[3]
1131
1132         # Now add the NGons.
1133         if len(ngons) > 0:
1134             for ng_key in ngons:
1135                 face_offset= len(me.tessfaces)
1136                 ng= ngons[ng_key]
1137                 v_locs= []
1138                 for vi in range(len(ng)):
1139                     v_locs.append(mathutils.Vector(layer_data.pnts[ngons[ng_key][vi]]))
1140                 tris= tessellate_polygon([v_locs])
1141                 me.tessfaces.add(len(tris))
1142                 for tri in tris:
1143                     face= me.tessfaces[face_offset]
1144                     face.vertices_raw[0]= ng[tri[0]]
1145                     face.vertices_raw[1]= ng[tri[1]]
1146                     face.vertices_raw[2]= ng[tri[2]]
1147                     face.material_index= me.tessfaces[ng_key].material_index
1148                     face.use_smooth= me.tessfaces[ng_key].use_smooth
1149                     face_offset+= 1
1150
1151         # FaceIDs are no longer a concern, so now update the mesh.
1152         has_edges= len(edges) > 0 or len(layer_data.edge_weights) > 0
1153         me.update(calc_edges=has_edges)
1154
1155         # Add the edges.
1156         edge_offset= len(me.edges)
1157         me.edges.add(len(edges))
1158         for edge_fi in edges:
1159             me.edges[edge_offset].vertices[0]= layer_data.pols[edge_fi][0]
1160             me.edges[edge_offset].vertices[1]= layer_data.pols[edge_fi][1]
1161             edge_offset+= 1
1162
1163         # Apply the Edge Weighting.
1164         if len(layer_data.edge_weights) > 0:
1165             for edge in me.edges:
1166                 edge_sa= "{0} {1}".format(edge.vertices[0], edge.vertices[1])
1167                 edge_sb= "{0} {1}".format(edge.vertices[1], edge.vertices[0])
1168                 if edge_sa in layer_data.edge_weights:
1169                     edge.crease= layer_data.edge_weights[edge_sa]
1170                 elif edge_sb in layer_data.edge_weights:
1171                     edge.crease= layer_data.edge_weights[edge_sb]
1172
1173         # Unfortunately we can't exlude certain faces from the subdivision.
1174         if layer_data.has_subds and add_subd_mod:
1175             ob.modifiers.new(name="Subsurf", type='SUBSURF')
1176
1177         # Should we build an armature from the embedded rig?
1178         if len(layer_data.bones) > 0 and skel_to_arm:
1179             bpy.ops.object.armature_add()
1180             arm_object= bpy.context.active_object
1181             arm_object.name= "ARM_" + layer_data.name
1182             arm_object.data.name= arm_object.name
1183             arm_object.location= layer_data.pivot
1184             bpy.ops.object.mode_set(mode='EDIT')
1185             build_armature(layer_data, arm_object.data.edit_bones)
1186             bpy.ops.object.mode_set(mode='OBJECT')
1187
1188         # Clear out the dictionaries for this layer.
1189         layer_data.bone_names.clear()
1190         layer_data.bone_rolls.clear()
1191         layer_data.wmaps.clear()
1192         layer_data.colmaps.clear()
1193         layer_data.uvmaps.clear()
1194         layer_data.morphs.clear()
1195         layer_data.surf_tags.clear()
1196
1197         # We may have some invalid mesh data, See: [#27916]
1198         # keep this last!
1199         print("validating mesh: %r..." % me.name)
1200         me.validate(verbose=1)
1201         print("done!")
1202
1203     # With the objects made, setup the parents and re-adjust the locations.
1204     for ob_key in ob_dict:
1205         if ob_dict[ob_key][1] != -1 and ob_dict[ob_key][1] in ob_dict:
1206             parent_ob = ob_dict[ob_dict[ob_key][1]]
1207             ob_dict[ob_key][0].parent= parent_ob[0]
1208             ob_dict[ob_key][0].location-= parent_ob[0].location
1209
1210     bpy.context.scene.update()
1211
1212     print("Done Importing LWO File")
1213
1214
1215 from bpy.props import StringProperty, BoolProperty
1216
1217
1218 class IMPORT_OT_lwo(bpy.types.Operator):
1219     """Import LWO Operator"""
1220     bl_idname= "import_scene.lwo"
1221     bl_label= "Import LWO"
1222     bl_description= "Import a LightWave Object file"
1223     bl_options= {'REGISTER', 'UNDO'}
1224
1225     filepath= StringProperty(name="File Path", description="Filepath used for importing the LWO file", maxlen=1024, default="")
1226
1227     ADD_SUBD_MOD= BoolProperty(name="Apply SubD Modifier", description="Apply the Subdivision Surface modifier to layers with Subpatches", default=True)
1228     LOAD_HIDDEN= BoolProperty(name="Load Hidden Layers", description="Load object layers that have been marked as hidden", default=False)
1229     SKEL_TO_ARM= BoolProperty(name="Create Armature", description="Create an armature from an embedded Skelegon rig", default=True)
1230     USE_EXISTING_MATERIALS= BoolProperty(name="Use Existing Materials", description="Use existing materials if a material by that name already exists", default=False)
1231
1232     def execute(self, context):
1233         load_lwo(self.filepath,
1234                  context,
1235                  self.ADD_SUBD_MOD,
1236                  self.LOAD_HIDDEN,
1237                  self.SKEL_TO_ARM,
1238                  self.USE_EXISTING_MATERIALS)
1239         return {'FINISHED'}
1240
1241     def invoke(self, context, event):
1242         wm= context.window_manager
1243         wm.fileselect_add(self)
1244         return {'RUNNING_MODAL'}
1245
1246
1247 def menu_func(self, context):
1248     self.layout.operator(IMPORT_OT_lwo.bl_idname, text="LightWave Object (.lwo)")
1249
1250
1251 def register():
1252     bpy.utils.register_module(__name__)
1253
1254     bpy.types.INFO_MT_file_import.append(menu_func)
1255
1256
1257 def unregister():
1258     bpy.utils.unregister_module(__name__)
1259
1260     bpy.types.INFO_MT_file_import.remove(menu_func)
1261
1262 if __name__ == "__main__":
1263     register()