-
Notifications
You must be signed in to change notification settings - Fork 77
/
export_x3d.py
1588 lines (1298 loc) · 66.5 KB
/
export_x3d.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
# SPDX-License-Identifier: GPL-2.0-or-later
# Contributors: bart:neeneenee*de, http://www.neeneenee.de/vrml, Campbell Barton
"""
This script exports to X3D format.
Usage:
Run this script from "File->Export" menu. A pop-up will ask whether you
want to export only selected or all relevant objects.
Known issues:
Doesn't handle multiple materials (don't use material indices);<br>
Doesn't handle multiple UV textures on a single mesh (create a mesh for each texture);<br>
Can't get the texture array associated with material * not the UV ones;
"""
import math
import os
import bpy
import mathutils
from bpy_extras.io_utils import create_derived_objects
# h3d defines
H3D_TOP_LEVEL = 'TOP_LEVEL_TI'
H3D_CAMERA_FOLLOW = 'CAMERA_FOLLOW_TRANSFORM'
H3D_VIEW_MATRIX = 'view_matrix'
def clamp_color(col):
return tuple([max(min(c, 1.0), 0.0) for c in col])
def matrix_direction_neg_z(matrix):
return (matrix.to_3x3() @ mathutils.Vector((0.0, 0.0, -1.0))).normalized()[:]
def prefix_quoted_str(value, prefix):
return value[0] + prefix + value[1:]
def suffix_quoted_str(value, suffix):
return value[:-1] + suffix + value[-1:]
def bool_as_str(value):
return ('false', 'true')[bool(value)]
def clean_def(txt):
# see report [#28256]
if not txt:
txt = "None"
# no digit start
if txt[0] in "1234567890+-":
txt = "_" + txt
return txt.translate({
# control characters 0x0-0x1f
# 0x00: "_",
0x01: "_",
0x02: "_",
0x03: "_",
0x04: "_",
0x05: "_",
0x06: "_",
0x07: "_",
0x08: "_",
0x09: "_",
0x0a: "_",
0x0b: "_",
0x0c: "_",
0x0d: "_",
0x0e: "_",
0x0f: "_",
0x10: "_",
0x11: "_",
0x12: "_",
0x13: "_",
0x14: "_",
0x15: "_",
0x16: "_",
0x17: "_",
0x18: "_",
0x19: "_",
0x1a: "_",
0x1b: "_",
0x1c: "_",
0x1d: "_",
0x1e: "_",
0x1f: "_",
0x7f: "_", # 127
0x20: "_", # space
0x22: "_", # "
0x27: "_", # '
0x23: "_", # #
0x2c: "_", # ,
0x2e: "_", # .
0x5b: "_", # [
0x5d: "_", # ]
0x5c: "_", # \
0x7b: "_", # {
0x7d: "_", # }
})
def build_hierarchy(objects):
""" returns parent child relationships, skipping
"""
objects_set = set(objects)
par_lookup = {}
def test_parent(parent):
while (parent is not None) and (parent not in objects_set):
parent = parent.parent
return parent
for obj in objects:
par_lookup.setdefault(test_parent(obj.parent), []).append((obj, []))
for parent, children in par_lookup.items():
for obj, subchildren in children:
subchildren[:] = par_lookup.get(obj, [])
return par_lookup.get(None, [])
# -----------------------------------------------------------------------------
# H3D Functions
# -----------------------------------------------------------------------------
def h3d_shader_glsl_frag_patch(filepath, scene, global_vars, frag_uniform_var_map):
h3d_file = open(filepath, 'r', encoding='utf-8')
lines = []
last_transform = None
for l in h3d_file:
if l.startswith("void main(void)"):
lines.append("\n")
lines.append("// h3d custom vars begin\n")
for v in global_vars:
lines.append("%s\n" % v)
lines.append("// h3d custom vars end\n")
lines.append("\n")
elif l.lstrip().startswith("light_visibility_other("):
w = l.split(', ')
last_transform = w[1] + "_transform" # XXX - HACK!!!
w[1] = '(view_matrix * %s_transform * vec4(%s.x, %s.y, %s.z, 1.0)).xyz' % (w[1], w[1], w[1], w[1])
l = ", ".join(w)
elif l.lstrip().startswith("light_visibility_sun_hemi("):
w = l.split(', ')
w[0] = w[0][len("light_visibility_sun_hemi(") + 1:]
if not h3d_is_object_view(scene, frag_uniform_var_map[w[0]]):
w[0] = '(mat3(normalize(view_matrix[0].xyz), normalize(view_matrix[1].xyz), normalize(view_matrix[2].xyz)) * -%s)' % w[0]
else:
w[0] = ('(mat3(normalize((view_matrix*%s)[0].xyz), normalize((view_matrix*%s)[1].xyz), normalize((view_matrix*%s)[2].xyz)) * -%s)' %
(last_transform, last_transform, last_transform, w[0]))
l = "\tlight_visibility_sun_hemi(" + ", ".join(w)
elif l.lstrip().startswith("light_visibility_spot_circle("):
w = l.split(', ')
w[0] = w[0][len("light_visibility_spot_circle(") + 1:]
if not h3d_is_object_view(scene, frag_uniform_var_map[w[0]]):
w[0] = '(mat3(normalize(view_matrix[0].xyz), normalize(view_matrix[1].xyz), normalize(view_matrix[2].xyz)) * -%s)' % w[0]
else:
w[0] = ('(mat3(normalize((view_matrix*%s)[0].xyz), normalize((view_matrix*%s)[1].xyz), normalize((view_matrix*%s)[2].xyz)) * %s)' %
(last_transform, last_transform, last_transform, w[0]))
l = "\tlight_visibility_spot_circle(" + ", ".join(w)
lines.append(l)
h3d_file.close()
h3d_file = open(filepath, 'w', encoding='utf-8')
h3d_file.writelines(lines)
h3d_file.close()
def h3d_is_object_view(scene, obj):
camera = scene.camera
parent = obj.parent
while parent:
if parent == camera:
return True
parent = parent.parent
return False
# -----------------------------------------------------------------------------
# Functions for writing output file
# -----------------------------------------------------------------------------
def export(file,
global_matrix,
depsgraph,
scene,
view_layer,
use_mesh_modifiers=False,
use_selection=True,
use_triangulate=False,
use_normals=False,
use_hierarchy=True,
use_h3d=False,
path_mode='AUTO',
name_decorations=True,
):
# -------------------------------------------------------------------------
# Global Setup
# -------------------------------------------------------------------------
import bpy_extras
from bpy_extras.io_utils import unique_name
from xml.sax.saxutils import quoteattr, escape
if name_decorations:
# If names are decorated, the uuid map can be split up
# by type for efficiency of collision testing
# since objects of different types will always have
# different decorated names.
uuid_cache_object = {} # object
uuid_cache_light = {} # 'LA_' + object.name
uuid_cache_view = {} # object, different namespace
uuid_cache_mesh = {} # mesh
uuid_cache_material = {} # material
uuid_cache_image = {} # image
uuid_cache_world = {} # world
CA_ = 'CA_'
OB_ = 'OB_'
ME_ = 'ME_'
IM_ = 'IM_'
WO_ = 'WO_'
MA_ = 'MA_'
LA_ = 'LA_'
group_ = 'group_'
else:
# If names are not decorated, it may be possible for two objects to
# have the same name, so there has to be a unified dictionary to
# prevent uuid collisions.
uuid_cache = {}
uuid_cache_object = uuid_cache # object
uuid_cache_light = uuid_cache # 'LA_' + object.name
uuid_cache_view = uuid_cache # object, different namespace
uuid_cache_mesh = uuid_cache # mesh
uuid_cache_material = uuid_cache # material
uuid_cache_image = uuid_cache # image
uuid_cache_world = uuid_cache # world
del uuid_cache
CA_ = ''
OB_ = ''
ME_ = ''
IM_ = ''
WO_ = ''
MA_ = ''
LA_ = ''
group_ = ''
_TRANSFORM = '_TRANSFORM'
# store files to copy
copy_set = set()
# store names of newly created meshes, so we dont overlap
mesh_name_set = set()
fw = file.write
base_src = os.path.dirname(bpy.data.filepath)
base_dst = os.path.dirname(file.name)
filename_strip = os.path.splitext(os.path.basename(file.name))[0]
gpu_shader_cache = {}
if use_h3d:
import gpu
gpu_shader_dummy_mat = bpy.data.materials.new('X3D_DYMMY_MAT')
gpu_shader_cache[None] = gpu.export_shader(scene, gpu_shader_dummy_mat)
h3d_material_route = []
# -------------------------------------------------------------------------
# File Writing Functions
# -------------------------------------------------------------------------
def writeHeader(ident):
filepath_quoted = quoteattr(os.path.basename(file.name))
blender_ver_quoted = quoteattr('Blender %s' % bpy.app.version_string)
fw('%s<?xml version="1.0" encoding="UTF-8"?>\n' % ident)
if use_h3d:
fw('%s<X3D profile="H3DAPI" version="1.4">\n' % ident)
else:
fw('%s<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.0//EN" "http://www.web3d.org/specifications/x3d-3.0.dtd">\n' % ident)
fw('%s<X3D version="3.0" profile="Immersive" xmlns:xsd="http://www.w3.org/2001/XMLSchema-instance" xsd:noNamespaceSchemaLocation="http://www.web3d.org/specifications/x3d-3.0.xsd">\n' % ident)
ident += '\t'
fw('%s<head>\n' % ident)
ident += '\t'
fw('%s<meta name="filename" content=%s />\n' % (ident, filepath_quoted))
fw('%s<meta name="generator" content=%s />\n' % (ident, blender_ver_quoted))
# this info was never updated, so blender version should be enough
# fw('%s<meta name="translator" content="X3D exporter v1.55 (2006/01/17)" />\n' % ident)
ident = ident[:-1]
fw('%s</head>\n' % ident)
fw('%s<Scene>\n' % ident)
ident += '\t'
if use_h3d:
# outputs the view matrix in glModelViewMatrix field
fw('%s<TransformInfo DEF="%s" outputGLMatrices="true" />\n' % (ident, H3D_TOP_LEVEL))
return ident
def writeFooter(ident):
if use_h3d:
# global
for route in h3d_material_route:
fw('%s%s\n' % (ident, route))
ident = ident[:-1]
fw('%s</Scene>\n' % ident)
ident = ident[:-1]
fw('%s</X3D>' % ident)
return ident
def writeViewpoint(ident, obj, matrix, scene):
view_id = quoteattr(unique_name(obj, CA_ + obj.name, uuid_cache_view, clean_func=clean_def, sep="_"))
loc, rot, scale = matrix.decompose()
rot = rot.to_axis_angle()
rot = (*rot[0].normalized(), rot[1])
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<Viewpoint ' % ident)))
fw('DEF=%s\n' % view_id)
fw(ident_step + 'centerOfRotation="0 0 0"\n')
fw(ident_step + 'position="%3.2f %3.2f %3.2f"\n' % loc[:])
fw(ident_step + 'orientation="%3.2f %3.2f %3.2f %3.2f"\n' % rot)
fw(ident_step + 'fieldOfView="%.3f"\n' % obj.data.angle)
fw(ident_step + '/>\n')
def writeFog(ident, world):
if world:
mtype = world.mist_settings.falloff
mparam = world.mist_settings
else:
return
if mparam.use_mist:
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<Fog ' % ident)))
fw('fogType="%s"\n' % ('LINEAR' if (mtype == 'LINEAR') else 'EXPONENTIAL'))
fw(ident_step + 'color="%.3f %.3f %.3f"\n' % clamp_color(world.horizon_color))
fw(ident_step + 'visibilityRange="%.3f"\n' % mparam.depth)
fw(ident_step + '/>\n')
else:
return
def writeNavigationInfo(ident, scene, has_light):
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<NavigationInfo ' % ident)))
fw('headlight="%s"\n' % bool_as_str(not has_light))
fw(ident_step + 'visibilityLimit="0.0"\n')
fw(ident_step + 'type=\'"EXAMINE", "ANY"\'\n')
fw(ident_step + 'avatarSize="0.25, 1.75, 0.75"\n')
fw(ident_step + '/>\n')
def writeTransform_begin(ident, matrix, def_id):
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<Transform ' % ident)))
if def_id is not None:
fw('DEF=%s\n' % def_id)
else:
fw('\n')
loc, rot, sca = matrix.decompose()
rot = rot.to_axis_angle()
rot = (*rot[0], rot[1])
fw(ident_step + 'translation="%.6f %.6f %.6f"\n' % loc[:])
# fw(ident_step + 'center="%.6f %.6f %.6f"\n' % (0, 0, 0))
fw(ident_step + 'scale="%.6f %.6f %.6f"\n' % sca[:])
fw(ident_step + 'rotation="%.6f %.6f %.6f %.6f"\n' % rot)
fw(ident_step + '>\n')
ident += '\t'
return ident
def writeTransform_end(ident):
ident = ident[:-1]
fw('%s</Transform>\n' % ident)
return ident
def writeSpotLight(ident, obj, matrix, light, world):
# note, light_id is not re-used
light_id = quoteattr(unique_name(obj, LA_ + obj.name, uuid_cache_light, clean_func=clean_def, sep="_"))
if world and 0:
ambi = world.ambient_color
amb_intensity = ((ambi[0] + ambi[1] + ambi[2]) / 3.0) / 2.5
del ambi
else:
amb_intensity = 0.0
# compute cutoff and beamwidth
intensity = min(lamp.energy / 1.75, 1.0)
beamWidth = lamp.spot_size * 0.37
# beamWidth=((lamp.spotSize*math.pi)/180.0)*.37
cutOffAngle = beamWidth * 1.3
orientation = matrix_direction_neg_z(matrix)
location = matrix.to_translation()[:]
radius = lamp.distance * math.cos(beamWidth)
# radius = lamp.dist*math.cos(beamWidth)
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<SpotLight ' % ident)))
fw('DEF=%s\n' % light_id)
fw(ident_step + 'radius="%.4f"\n' % radius)
fw(ident_step + 'ambientIntensity="%.4f"\n' % amb_intensity)
fw(ident_step + 'intensity="%.4f"\n' % intensity)
fw(ident_step + 'color="%.4f %.4f %.4f"\n' % clamp_color(light.color))
fw(ident_step + 'beamWidth="%.4f"\n' % beamWidth)
fw(ident_step + 'cutOffAngle="%.4f"\n' % cutOffAngle)
fw(ident_step + 'direction="%.4f %.4f %.4f"\n' % orientation)
fw(ident_step + 'location="%.4f %.4f %.4f"\n' % location)
fw(ident_step + '/>\n')
def writeDirectionalLight(ident, obj, matrix, light, world):
# note, light_id is not re-used
light_id = quoteattr(unique_name(obj, LA_ + obj.name, uuid_cache_light, clean_func=clean_def, sep="_"))
if world and 0:
ambi = world.ambient_color
# ambi = world.amb
amb_intensity = ((float(ambi[0] + ambi[1] + ambi[2])) / 3.0) / 2.5
else:
ambi = 0
amb_intensity = 0.0
intensity = min(light.energy / 1.75, 1.0)
orientation = matrix_direction_neg_z(matrix)
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<DirectionalLight ' % ident)))
fw('DEF=%s\n' % light_id)
fw(ident_step + 'ambientIntensity="%.4f"\n' % amb_intensity)
fw(ident_step + 'color="%.4f %.4f %.4f"\n' % clamp_color(light.color))
fw(ident_step + 'intensity="%.4f"\n' % intensity)
fw(ident_step + 'direction="%.4f %.4f %.4f"\n' % orientation)
fw(ident_step + '/>\n')
def writePointLight(ident, obj, matrix, light, world):
# note, light_id is not re-used
light_id = quoteattr(unique_name(obj, LA_ + obj.name, uuid_cache_light, clean_func=clean_def, sep="_"))
if world and 0:
ambi = world.ambient_color
# ambi = world.amb
amb_intensity = ((float(ambi[0] + ambi[1] + ambi[2])) / 3.0) / 2.5
else:
ambi = 0.0
amb_intensity = 0.0
intensity = min(light.energy / 1.75, 1.0)
location = matrix.to_translation()[:]
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<PointLight ' % ident)))
fw('DEF=%s\n' % light_id)
fw(ident_step + 'ambientIntensity="%.4f"\n' % amb_intensity)
fw(ident_step + 'color="%.4f %.4f %.4f"\n' % clamp_color(light.color))
fw(ident_step + 'intensity="%.4f"\n' % intensity)
fw(ident_step + 'radius="%.4f" \n' % light.distance)
fw(ident_step + 'location="%.4f %.4f %.4f"\n' % location)
fw(ident_step + '/>\n')
def writeIndexedFaceSet(ident, obj, mesh, mesh_name, matrix, world):
obj_id = quoteattr(unique_name(obj, OB_ + obj.name, uuid_cache_object, clean_func=clean_def, sep="_"))
mesh_id = quoteattr(unique_name(mesh, ME_ + mesh_name, uuid_cache_mesh, clean_func=clean_def, sep="_"))
mesh_id_group = prefix_quoted_str(mesh_id, group_)
mesh_id_coords = prefix_quoted_str(mesh_id, 'coords_')
mesh_id_normals = prefix_quoted_str(mesh_id, 'normals_')
# Be sure tessellated loop triangles are available!
if use_triangulate:
if not mesh.loop_triangles and mesh.polygons:
mesh.calc_loop_triangles()
use_collnode = bool([mod for mod in obj.modifiers
if mod.type == 'COLLISION'
if mod.show_viewport])
if use_collnode:
fw('%s<Collision enabled="true">\n' % ident)
ident += '\t'
# use _ifs_TRANSFORM suffix so we dont collide with transform node when
# hierarchys are used.
ident = writeTransform_begin(ident, matrix, suffix_quoted_str(obj_id, "_ifs" + _TRANSFORM))
if mesh.tag:
fw('%s<Group USE=%s />\n' % (ident, mesh_id_group))
else:
mesh.tag = True
fw('%s<Group DEF=%s>\n' % (ident, mesh_id_group))
ident += '\t'
is_uv = bool(mesh.uv_layers.active)
# is_col, defined for each material
is_coords_written = False
mesh_materials = mesh.materials[:]
if not mesh_materials:
mesh_materials = [None]
mesh_material_tex = [None] * len(mesh_materials)
mesh_material_mtex = [None] * len(mesh_materials)
mesh_material_images = [None] * len(mesh_materials)
for i, material in enumerate(mesh_materials):
if 0 and material:
for mtex in material.texture_slots:
if mtex:
tex = mtex.texture
if tex and tex.type == 'IMAGE':
image = tex.image
if image:
mesh_material_tex[i] = tex
mesh_material_mtex[i] = mtex
mesh_material_images[i] = image
break
# fast access!
mesh_vertices = mesh.vertices[:]
mesh_loops = mesh.loops[:]
mesh_polygons = mesh.polygons[:]
mesh_polygons_materials = [p.material_index for p in mesh_polygons]
mesh_polygons_vertices = [p.vertices[:] for p in mesh_polygons]
if len(set(mesh_material_images)) > 0: # make sure there is at least one image
mesh_polygons_image = [mesh_material_images[material_index] for material_index in mesh_polygons_materials]
else:
mesh_polygons_image = [None] * len(mesh_polygons)
mesh_polygons_image_unique = set(mesh_polygons_image)
# group faces
polygons_groups = {}
for material_index in range(len(mesh_materials)):
for image in mesh_polygons_image_unique:
polygons_groups[material_index, image] = []
del mesh_polygons_image_unique
for i, (material_index, image) in enumerate(zip(mesh_polygons_materials, mesh_polygons_image)):
polygons_groups[material_index, image].append(i)
# Py dict are sorted now, so we can use directly polygons_groups.items()
# and still get consistent reproducible outputs.
is_col = mesh.vertex_colors.active
mesh_loops_col = mesh.vertex_colors.active.data if is_col else None
# Check if vertex colors can be exported in per-vertex mode.
# Do we have just one color per vertex in every face that uses the vertex?
if is_col:
def calc_vertex_color():
vert_color = [None] * len(mesh.vertices)
for i, p in enumerate(mesh_polygons):
for lidx in p.loop_indices:
l = mesh_loops[lidx]
if vert_color[l.vertex_index] is None:
vert_color[l.vertex_index] = mesh_loops_col[lidx].color[:]
elif vert_color[l.vertex_index] != mesh_loops_col[lidx].color[:]:
return False, ()
return True, vert_color
is_col_per_vertex, vert_color = calc_vertex_color()
del calc_vertex_color
# If using looptris, we need a mapping poly_index -> loop_tris_indices...
if use_triangulate:
polygons_to_loop_triangles_indices = [[] for i in range(len(mesh_polygons))]
for ltri in mesh.loop_triangles:
polygons_to_loop_triangles_indices[ltri.polygon_index].append(ltri)
for (material_index, image), polygons_group in polygons_groups.items():
if polygons_group:
material = mesh_materials[material_index]
fw('%s<Shape>\n' % ident)
ident += '\t'
is_smooth = False
# kludge but as good as it gets!
for i in polygons_group:
if mesh_polygons[i].use_smooth:
is_smooth = True
break
# UV's and VCols split verts off which effects smoothing
# force writing normals in this case.
# Also, creaseAngle is not supported for IndexedTriangleSet,
# so write normals when is_smooth (otherwise
# IndexedTriangleSet can have only all smooth/all flat shading).
is_force_normals = use_triangulate and (is_smooth or is_uv or is_col)
if use_h3d:
gpu_shader = gpu_shader_cache.get(material) # material can be 'None', uses dummy cache
if gpu_shader is None:
gpu_shader = gpu_shader_cache[material] = gpu.export_shader(scene, material)
if 1: # XXX DEBUG
gpu_shader_tmp = gpu.export_shader(scene, material)
import pprint
print('\nWRITING MATERIAL:', material.name)
del gpu_shader_tmp['fragment']
del gpu_shader_tmp['vertex']
pprint.pprint(gpu_shader_tmp, width=120)
#pprint.pprint(val['vertex'])
del gpu_shader_tmp
fw('%s<Appearance>\n' % ident)
ident += '\t'
if image and not use_h3d:
writeImageTexture(ident, image)
# transform by mtex
loc = mesh_material_mtex[material_index].offset[:2]
# mtex_scale * tex_repeat
sca_x, sca_y = mesh_material_mtex[material_index].scale[:2]
sca_x *= mesh_material_tex[material_index].repeat_x
sca_y *= mesh_material_tex[material_index].repeat_y
# flip x/y is a sampling feature, convert to transform
if mesh_material_tex[material_index].use_flip_axis:
rot = math.pi / -2.0
sca_x, sca_y = sca_y, -sca_x
else:
rot = 0.0
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<TextureTransform ' % ident)))
fw('\n')
# fw('center="%.6f %.6f" ' % (0.0, 0.0))
fw(ident_step + 'translation="%.6f %.6f"\n' % loc)
fw(ident_step + 'scale="%.6f %.6f"\n' % (sca_x, sca_y))
fw(ident_step + 'rotation="%.6f"\n' % rot)
fw(ident_step + '/>\n')
if use_h3d:
mat_tmp = material if material else gpu_shader_dummy_mat
writeMaterialH3D(ident, mat_tmp, world,
obj, gpu_shader)
del mat_tmp
else:
if material:
writeMaterial(ident, material, world)
ident = ident[:-1]
fw('%s</Appearance>\n' % ident)
mesh_loops_uv = mesh.uv_layers.active.data if is_uv else None
#-- IndexedFaceSet or IndexedLineSet
if use_triangulate:
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<IndexedTriangleSet ' % ident)))
# --- Write IndexedTriangleSet Attributes (same as IndexedFaceSet)
fw('solid="%s"\n' % bool_as_str(material and material.use_backface_culling))
if use_normals or is_force_normals:
fw(ident_step + 'normalPerVertex="true"\n')
else:
# Tell X3D browser to generate flat (per-face) normals
fw(ident_step + 'normalPerVertex="false"\n')
slot_uv = None
slot_col = None
def _tuple_from_rounded_iter(it):
return tuple(round(v, 5) for v in it)
if is_uv and is_col:
slot_uv = 0
slot_col = 1
def vertex_key(lidx):
return (
_tuple_from_rounded_iter(mesh_loops_uv[lidx].uv),
_tuple_from_rounded_iter(mesh_loops_col[lidx].color),
)
elif is_uv:
slot_uv = 0
def vertex_key(lidx):
return (
_tuple_from_rounded_iter(mesh_loops_uv[lidx].uv),
)
elif is_col:
slot_col = 0
def vertex_key(lidx):
return (
_tuple_from_rounded_iter(mesh_loops_col[lidx].color),
)
else:
# ack, not especially efficient in this case
def vertex_key(lidx):
return None
# build a mesh mapping dict
vertex_hash = [{} for i in range(len(mesh.vertices))]
face_tri_list = [[None, None, None] for i in range(len(mesh.loop_triangles))]
vert_tri_list = []
totvert = 0
totface = 0
temp_tri = [None] * 3
for pidx in polygons_group:
for ltri in polygons_to_loop_triangles_indices[pidx]:
for tri_vidx, (lidx, vidx) in enumerate(zip(ltri.loops, ltri.vertices)):
key = vertex_key(lidx)
vh = vertex_hash[vidx]
x3d_v = vh.get(key)
if x3d_v is None:
x3d_v = key, vidx, totvert
vh[key] = x3d_v
# key / original_vertex / new_vertex
vert_tri_list.append(x3d_v)
totvert += 1
temp_tri[tri_vidx] = x3d_v
face_tri_list[totface][:] = temp_tri[:]
totface += 1
del vertex_key
del _tuple_from_rounded_iter
assert(len(face_tri_list) == len(mesh.loop_triangles))
fw(ident_step + 'index="')
for x3d_f in face_tri_list:
fw('%i %i %i ' % (x3d_f[0][2], x3d_f[1][2], x3d_f[2][2]))
fw('"\n')
# close IndexedTriangleSet
fw(ident_step + '>\n')
ident += '\t'
fw('%s<Coordinate ' % ident)
fw('point="')
for x3d_v in vert_tri_list:
fw('%.6f %.6f %.6f ' % mesh_vertices[x3d_v[1]].co[:])
fw('" />\n')
if use_normals or is_force_normals:
fw('%s<Normal ' % ident)
fw('vector="')
for x3d_v in vert_tri_list:
fw('%.6f %.6f %.6f ' % mesh_vertices[x3d_v[1]].normal[:])
fw('" />\n')
if is_uv:
fw('%s<TextureCoordinate point="' % ident)
for x3d_v in vert_tri_list:
fw('%.4f %.4f ' % x3d_v[0][slot_uv])
fw('" />\n')
if is_col:
fw('%s<ColorRGBA color="' % ident)
for x3d_v in vert_tri_list:
fw('%.3f %.3f %.3f %.3f ' % x3d_v[0][slot_col])
fw('" />\n')
if use_h3d:
# write attributes
for gpu_attr in gpu_shader['attributes']:
# UVs
if gpu_attr['type'] == gpu.CD_MTFACE:
if gpu_attr['datatype'] == gpu.GPU_DATA_2F:
fw('%s<FloatVertexAttribute ' % ident)
fw('name="%s" ' % gpu_attr['varname'])
fw('numComponents="2" ')
fw('value="')
for x3d_v in vert_tri_list:
fw('%.4f %.4f ' % x3d_v[0][slot_uv])
fw('" />\n')
else:
assert(0)
elif gpu_attr['type'] == gpu.CD_MCOL:
if gpu_attr['datatype'] == gpu.GPU_DATA_4UB:
pass # XXX, H3D can't do
else:
assert(0)
ident = ident[:-1]
fw('%s</IndexedTriangleSet>\n' % ident)
else:
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<IndexedFaceSet ' % ident)))
# --- Write IndexedFaceSet Attributes (same as IndexedTriangleSet)
fw('solid="%s"\n' % bool_as_str(material and material.use_backface_culling))
if is_smooth:
# use Auto-Smooth angle, if enabled. Otherwise make
# the mesh perfectly smooth by creaseAngle > pi.
fw(ident_step + 'creaseAngle="%.4f"\n' % (mesh.auto_smooth_angle if mesh.use_auto_smooth else 4.0))
if use_normals:
# currently not optional, could be made so:
fw(ident_step + 'normalPerVertex="true"\n')
# IndexedTriangleSet assumes true
if is_col and not is_col_per_vertex:
fw(ident_step + 'colorPerVertex="false"\n')
# for IndexedTriangleSet we use a uv per vertex so this isn't needed.
if is_uv:
fw(ident_step + 'texCoordIndex="')
j = 0
for i in polygons_group:
num_poly_verts = len(mesh_polygons_vertices[i])
fw('%s -1 ' % ' '.join((str(i) for i in range(j, j + num_poly_verts))))
j += num_poly_verts
fw('"\n')
# --- end texCoordIndex
if True:
fw(ident_step + 'coordIndex="')
for i in polygons_group:
poly_verts = mesh_polygons_vertices[i]
fw('%s -1 ' % ' '.join((str(i) for i in poly_verts)))
fw('"\n')
# --- end coordIndex
# close IndexedFaceSet
fw(ident_step + '>\n')
ident += '\t'
# --- Write IndexedFaceSet Elements
if True:
if is_coords_written:
fw('%s<Coordinate USE=%s />\n' % (ident, mesh_id_coords))
if use_normals:
fw('%s<Normal USE=%s />\n' % (ident, mesh_id_normals))
else:
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<Coordinate ' % ident)))
fw('DEF=%s\n' % mesh_id_coords)
fw(ident_step + 'point="')
for v in mesh.vertices:
fw('%.6f %.6f %.6f ' % v.co[:])
fw('"\n')
fw(ident_step + '/>\n')
is_coords_written = True
if use_normals:
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<Normal ' % ident)))
fw('DEF=%s\n' % mesh_id_normals)
fw(ident_step + 'vector="')
for v in mesh.vertices:
fw('%.6f %.6f %.6f ' % v.normal[:])
fw('"\n')
fw(ident_step + '/>\n')
if is_uv:
fw('%s<TextureCoordinate point="' % ident)
for i in polygons_group:
for lidx in mesh_polygons[i].loop_indices:
fw('%.4f %.4f ' % mesh_loops_uv[lidx].uv[:])
fw('" />\n')
if is_col:
# Need better logic here, dynamic determination
# which of the X3D coloring models fits better this mesh - per face
# or per vertex. Probably with an explicit fallback mode parameter.
fw('%s<ColorRGBA color="' % ident)
if is_col_per_vertex:
for i in range(len(mesh.vertices)):
# may be None,
fw('%.3f %.3f %.3f %.3f ' % (vert_color[i] or (0.0, 0.0, 0.0, 0.0)))
else: # Export as colors per face.
# TODO: average them rather than using the first one!
for i in polygons_group:
fw('%.3f %.3f %.3f %.3f ' % mesh_loops_col[mesh_polygons[i].loop_start].color[:])
fw('" />\n')
#--- output vertexColors
#--- output closing braces
ident = ident[:-1]
fw('%s</IndexedFaceSet>\n' % ident)
ident = ident[:-1]
fw('%s</Shape>\n' % ident)
# XXX
#fw('%s<PythonScript DEF="PS" url="object.py" >\n' % ident)
#fw('%s <ShaderProgram USE="MA_Material.005" containerField="references"/>\n' % ident)
#fw('%s</PythonScript>\n' % ident)
ident = ident[:-1]
fw('%s</Group>\n' % ident)
ident = writeTransform_end(ident)
if use_collnode:
ident = ident[:-1]
fw('%s</Collision>\n' % ident)
def writeMaterial(ident, material, world):
material_id = quoteattr(unique_name(material, MA_ + material.name, uuid_cache_material, clean_func=clean_def, sep="_"))
# look up material name, use it if available
if material.tag:
fw('%s<Material USE=%s />\n' % (ident, material_id))
else:
material.tag = True
emit = 0.0 #material.emit
ambient = 0.0 #material.ambient / 3.0
diffuseColor = material.diffuse_color[:3]
if world and 0:
ambiColor = ((material.ambient * 2.0) * world.ambient_color)[:]
else:
ambiColor = 0.0, 0.0, 0.0
emitColor = tuple(((c * emit) + ambiColor[i]) / 2.0 for i, c in enumerate(diffuseColor))
shininess = material.specular_intensity
specColor = tuple((c + 0.001) / (1.25 / (material.specular_intensity + 0.001)) for c in material.specular_color)
transp = 1.0 - material.diffuse_color[3]
# ~ if material.use_shadeless:
# ~ ambient = 1.0
# ~ shininess = 0.0
# ~ specColor = emitColor = diffuseColor
ident_step = ident + (' ' * (-len(ident) + \
fw('%s<Material ' % ident)))
fw('DEF=%s\n' % material_id)
fw(ident_step + 'diffuseColor="%.3f %.3f %.3f"\n' % clamp_color(diffuseColor))
fw(ident_step + 'specularColor="%.3f %.3f %.3f"\n' % clamp_color(specColor))
fw(ident_step + 'emissiveColor="%.3f %.3f %.3f"\n' % clamp_color(emitColor))
fw(ident_step + 'ambientIntensity="%.3f"\n' % ambient)
fw(ident_step + 'shininess="%.3f"\n' % shininess)
fw(ident_step + 'transparency="%s"\n' % transp)
fw(ident_step + '/>\n')
def writeMaterialH3D(ident, material, world,
obj, gpu_shader):
material_id = quoteattr(unique_name(material, 'MA_' + material.name, uuid_cache_material, clean_func=clean_def, sep="_"))
fw('%s<Material />\n' % ident)
if material.tag:
fw('%s<ComposedShader USE=%s />\n' % (ident, material_id))
else:
material.tag = True
# GPU_material_bind_uniforms
# GPU_begin_object_materials
#~ CD_MCOL 6
#~ CD_MTFACE 5
#~ CD_ORCO 14
#~ CD_TANGENT 18
#~ GPU_DATA_16F 7
#~ GPU_DATA_1F 2
#~ GPU_DATA_1I 1
#~ GPU_DATA_2F 3
#~ GPU_DATA_3F 4
#~ GPU_DATA_4F 5
#~ GPU_DATA_4UB 8
#~ GPU_DATA_9F 6
#~ GPU_DYNAMIC_LIGHT_DYNCO 7
#~ GPU_DYNAMIC_LIGHT_DYNCOL 11
#~ GPU_DYNAMIC_LIGHT_DYNENERGY 10
#~ GPU_DYNAMIC_LIGHT_DYNIMAT 8
#~ GPU_DYNAMIC_LIGHT_DYNPERSMAT 9