swig/blender24/pmd_export.py

   1 #!BPY
   2 # coding: utf-8
   3 """
   4  Name: 'MikuMikuDance model (.pmd)...'
   5  Blender: 248
   6  Group: 'Export'
   7  Tooltip: 'Export PMD file for MikuMikuDance.'
   8 """
   9 __author__= ["ousttrue"]
  10 __version__= "0.2"
  11 __url__=()
  12 __bpydoc__="""
  13 0.1 20100318 first implementation.
  14 0.2 20100519 refactoring. use C extension.
  15 """
  16 import Blender
  17 import os
  18 import sys
  19
  20 from meshio import pmd, englishmap
  21
  22
  23 # ファイルシステムの文字コード
  24 # 改造版との共用のため
  25 FS_ENCODING=sys.getfilesystemencoding()
  26 if os.path.exists(os.path.dirname(sys.argv[0])+"/utf8"):
  27     INTERNAL_ENCODING='utf-8'
  28 else:
  29     INTERNAL_ENCODING=FS_ENCODING
  30
  31
  32 MMD_SHAPE_GROUP_NAME='_MMD_SHAPE'
  33 EXTENSION = u'.pmd'
  34
  35
  36 class Node(object):
  37     __slots__=['o', 'children']
  38     def __init__(self, o):
  39         self.o=o
  40         self.children=[]
  41
  42
  43 ###############################################################################
  44 # Blenderのメッシュをワンスキンメッシュ化する
  45 ###############################################################################
  46 def near(x, y, EPSILON=1e-5):
  47     d=x-y
  48     return d>=-EPSILON and d<=EPSILON
  49
  50
  51 class VertexKey(object):
  52     """
  53     重複頂点の検索キー
  54     """
  55     __slots__=[
  56             'x', 'y', 'z', # 位置
  57             'nx', 'ny', 'nz', # 法線
  58             'u', 'v', # uv
  59             ]
  60
  61     def __init__(self, x, y, z, nx, ny, nz, u, v):
  62         self.x=x
  63         self.y=y
  64         self.z=z
  65         self.nx=nx
  66         self.ny=ny
  67         self.nz=nz
  68         self.u=u
  69         self.v=v
  70
  71     def __str__(self):
  72         return "<vkey: %f, %f, %f, %f, %f, %f, %f, %f>" % (
  73                 self.x, self.y, self.z, self.nx, self.ny, self.nz, self.u, self.v)
  74
  75     def __hash__(self):
  76         #return int((self.x+self.y+self.z+self.nx+self.ny+self.nz+self.u+self.v)*100)
  77         return int((self.x+self.y+self.z)*100)
  78
  79     def __eq__(self, rhs):
  80         #return near(self.x, rhs.x) and near(self.y, rhs.y) and near(self.z, rhs.z) and near(self.nx, rhs.nx) and near(self.ny, rhs.ny) and near(self.nz, rhs.nz) and near(self.u, rhs.u) and near(self.v, rhs.v)
  81         #return near(self.x, rhs.x) and near(self.y, rhs.y) and near(self.z, rhs.z)
  82         return self.x==rhs.x and self.y==rhs.y and self.z==rhs.z
  83
  84
  85 class VertexArray(object):
  86     """
  87     頂点配列
  88     """
  89     def __init__(self):
  90         # マテリアル毎に分割したインデックス配列
  91         self.indexArrays={}
  92         # 頂点属性
  93         self.vertices=[]
  94         self.normals=[]
  95         self.uvs=[]
  96         # skinning属性
  97         self.b0=[]
  98         self.b1=[]
  99         self.weight=[]
 100
 101         self.vertexMap={}
 102         self.indexMap={}
 103
 104     def __str__(self):
 105         return "<VertexArray %d vertices, %d indexArrays>" % (
 106                 len(self.vertices), len(self.indexArrays))
 107
 108     def zip(self):
 109         return zip(
 110                 self.vertices, self.normals, self.uvs,
 111                 self.b0, self.b1, self.weight)
 112
 113     def __getIndex(self, base_index, pos, normal, uv, b0, b1, weight0):
 114         """
 115         頂点属性からその頂点のインデックスを得る
 116         """
 117         key=VertexKey(
 118                 pos[0], pos[1], pos[2],
 119                 normal[0], normal[1], normal[2],
 120                 uv[0], uv[1])
 121         if key in self.vertexMap:
 122             # 同じ頂点を登録済み
 123             index=self.vertexMap[key]
 124         else:
 125             index=len(self.vertices)
 126             # 新規頂点
 127             self.vertexMap[key]=index
 128             # append...
 129             self.vertices.append((pos.x, pos.y, pos.z))
 130             self.normals.append((normal.x, normal.y, normal.z))
 131             self.uvs.append((uv.x, uv.y))
 132             self.b0.append(b0)
 133             self.b1.append(b1)
 134             self.weight.append(weight0)
 135
 136         # indexのマッピングを保存する
 137         if not base_index in self.indexMap:
 138             self.indexMap[base_index]=set()
 139         self.indexMap[base_index].add(index)
 140
 141         assert(index<=65535)
 142         return index
 143
 144     def getMappedIndices(self, base_index):
 145         return self.indexMap[base_index]
 146
 147     def addTriangle(self,
 148             material,
 149             base_index0, base_index1, base_index2,
 150             pos0, pos1, pos2,
 151             n0, n1, n2,
 152             uv0, uv1, uv2,
 153             b0_0, b0_1, b0_2,
 154             b1_0, b1_1, b1_2,
 155             weight0, weight1, weight2
 156             ):
 157         if not material in self.indexArrays:
 158             self.indexArrays[material]=[]
 159
 160         index0=self.__getIndex(base_index0, pos0, n0, uv0, b0_0, b1_0, weight0)
 161         index1=self.__getIndex(base_index1, pos1, n1, uv1, b0_1, b1_1, weight1)
 162         index2=self.__getIndex(base_index2, pos2, n2, uv2, b0_2, b1_2, weight2)
 163
 164         self.indexArrays[material]+=[index0, index1, index2]
 165
 166
 167 class Morph(object):
 168     __slots__=['name', 'type', 'indices', 'offsets']
 169     def __init__(self, name, type):
 170         self.name=name
 171         self.type=type
 172         self.indices=[]
 173         self.offsets=[]
 174
 175 class OneSkinMesh(object):
 176     __slots__=['armatureObj', 'vertexArray', 'morphList']
 177     def __init__(self, root):
 178         self.armatureObj=None
 179         self.vertexArray=VertexArray()
 180         self.morphList=[]
 181         self.__create(root)
 182
 183     def __str__(self):
 184         return "<OneSkinMesh armature:%s, %s, morph:%d>" % (
 185                 self.armatureObj.name if self.armatureObj else None,
 186                 self.vertexArray,
 187                 len(self.morphList))
 188
 189     def __create(self, node):
 190         if node.o.getType()=='Mesh':
 191             self.__addMesh(node.o)
 192
 193         for child in node.children:
 194             self.__create(child)
 195
 196     def __addMesh(self, obj):
 197         if obj.restrictDisplay:
 198             # 非表示
 199             return
 200
 201         print("export", obj.name)
 202
 203         ############################################################
 204         # search armature modifier
 205         ############################################################
 206         for m in obj.modifiers:
 207             if m.name=="Armature":
 208                 armatureObj=m[Blender.Modifier.Settings.OBJECT]
 209                 if not self.armatureObj:
 210                     self.armatureObj=armatureObj
 211                 elif self.armatureObj!=armatureObj:
 212                     print "warning! found multiple armature. ignored.", armatureObj.name
 213
 214         ############################################################
 215         # bone weight
 216         ############################################################
 217         mesh=obj.getData(mesh=True)
 218         weightMap={}
 219         secondWeightMap={}
 220         for name in mesh.getVertGroupNames():
 221             for i, w in mesh.getVertsFromGroup(name, 1):
 222                 if w>0:
 223                     if i in weightMap:
 224                         if i in secondWeightMap:
 225                             # 上位２つのweightを採用する
 226                             if w<secondWeightMap[i]:
 227                                 pass
 228                             elif w<weightMap[i]:
 229                                 # ２つ目を入れ替え
 230                                 secondWeightMap[i]=(name, w)
 231                             else:
 232                                 # １つ目を入れ替え
 233                                 weightMap[i]=(name, w)
 234                         else:
 235                             if w>weightMap[i][1]:
 236                                 # 多い方をweightMapに
 237                                 secondWeightMap[i]=weightMap[i]
 238                                 weightMap[i]=(name, w)
 239                             else:
 240                                 secondWeightMap[i]=(name, w)
 241                     else:
 242                         weightMap[i]=(name, w)
 243
 244         # 合計値が1になるようにする
 245         for i in xrange(len(mesh.verts)):
 246         #for i, name_weight in weightMap.items():
 247             if i in secondWeightMap:
 248                 secondWeightMap[i]=(secondWeightMap[i][0], 1.0-weightMap[i][1])
 249             elif i in weightMap:
 250                 weightMap[i]=(weightMap[i][0], 1.0)
 251                 secondWeightMap[i]=("", 0)
 252             else:
 253                 print "no weight vertex"
 254                 weightMap[i]=("", 0)
 255                 secondWeightMap[i]=("", 0)
 256
 257
 258         ############################################################
 259         # faces
 260         # 新たにメッシュを生成する
 261         ############################################################
 262         mesh=Blender.Mesh.New()
 263         # not applied modifiers
 264         mesh.getFromObject(obj.name, 1)
 265         # apply object transform
 266         mesh.transform(obj.getMatrix())
 267         if len(mesh.verts)==0:
 268             return
 269
 270         for face in mesh.faces:
 271             faceVertexCount=len(face.v)
 272             material=mesh.materials[face.mat]
 273             if faceVertexCount==3:
 274                 v0=face.v[0]
 275                 v1=face.v[1]
 276                 v2=face.v[2]
 277                 # triangle
 278                 self.vertexArray.addTriangle(
 279                         material.name,
 280                         v0.index, v1.index, v2.index,
 281                         v0.co, v1.co, v2.co,
 282                         # ToDo vertex normal
 283                         #v0.no, v1.no, v2.no,
 284                         face.no, face.no, face.no,
 285                         face.uv[0], face.uv[1], face.uv[2],
 286                         weightMap[v0.index][0],
 287                         weightMap[v1.index][0],
 288                         weightMap[v2.index][0],
 289                         secondWeightMap[v0.index][0],
 290                         secondWeightMap[v1.index][0],
 291                         secondWeightMap[v2.index][0],
 292                         weightMap[v0.index][1],
 293                         weightMap[v1.index][1],
 294                         weightMap[v2.index][1]
 295                         )
 296             elif faceVertexCount==4:
 297                 v0=face.v[0]
 298                 v1=face.v[1]
 299                 v2=face.v[2]
 300                 v3=face.v[3]
 301                 # quadrangle
 302                 self.vertexArray.addTriangle(
 303                         material.name,
 304                         v0.index, v1.index, v2.index,
 305                         v0.co, v1.co, v2.co,
 306                         #v0.no, v1.no, v2.no,
 307                         face.no, face.no, face.no,
 308                         face.uv[0], face.uv[1], face.uv[2],
 309                         weightMap[v0.index][0],
 310                         weightMap[v1.index][0],
 311                         weightMap[v2.index][0],
 312                         secondWeightMap[v0.index][0],
 313                         secondWeightMap[v1.index][0],
 314                         secondWeightMap[v2.index][0],
 315                         weightMap[v0.index][1],
 316                         weightMap[v1.index][1],
 317                         weightMap[v2.index][1]
 318                         )
 319                 self.vertexArray.addTriangle(
 320                         material.name,
 321                         v2.index, v3.index, v0.index,
 322                         v2.co, v3.co, v0.co,
 323                         #v2.no, v3.no, v0.no,
 324                         face.no, face.no, face.no,
 325                         face.uv[2], face.uv[3], face.uv[0],
 326                         weightMap[v2.index][0],
 327                         weightMap[v3.index][0],
 328                         weightMap[v0.index][0],
 329                         secondWeightMap[v2.index][0],
 330                         secondWeightMap[v3.index][0],
 331                         secondWeightMap[v0.index][0],
 332                         weightMap[v2.index][1],
 333                         weightMap[v3.index][1],
 334                         weightMap[v0.index][1]
 335                         )
 336
 337         ############################################################
 338         # skin
 339         ############################################################
 340         # base
 341         indexRelativeMap={}
 342         blenderMesh=obj.getData(mesh=True)
 343         if blenderMesh.key:
 344             for b in blenderMesh.key.blocks:
 345                 if b.name=='Basis':
 346                     print(b.name)
 347                     morph=self.__getOrCreateMorph('base', 0)
 348                     relativeIndex=0
 349                     basis=b
 350                     for index in blenderMesh.getVertsFromGroup(
 351                             MMD_SHAPE_GROUP_NAME):
 352                         v=b.data[index]
 353                         pos=[v[0], v[1], v[2]]
 354                         indices=self.vertexArray.getMappedIndices(index)
 355                         for i in indices:
 356                             morph.indices.append(i)
 357                             morph.offsets.append(pos)
 358                             indexRelativeMap[i]=relativeIndex
 359                             relativeIndex+=1
 360                     break
 361
 362             assert(basis)
 363
 364             # shape keys
 365             for b in obj.getData(mesh=True).key.blocks:
 366                 if b.name=='Basis':
 367                     continue
 368
 369                 print(b.name)
 370                 morph=self.__getOrCreateMorph(b.name, 4)
 371                 for index in obj.getData(mesh=True).getVertsFromGroup(
 372                         MMD_SHAPE_GROUP_NAME):
 373                     #offset=[d-s for d, s in zip(
 374                     #    b.data[index], basis.data[index])]
 375                     src=basis.data[index]
 376                     dst=b.data[index]
 377                     offset=[dst[0]-src[0], dst[1]-src[1], dst[2]-src[2]]
 378                     indices=self.vertexArray.getMappedIndices(index)
 379                     for i in indices:
 380                         morph.indices.append(indexRelativeMap[i])
 381                         morph.offsets.append(offset)
 382
 383     def __getOrCreateMorph(self, name, type):
 384         for m in self.morphList:
 385             if m.name==name:
 386                 return m
 387         m=Morph(name, type)
 388         self.morphList.append(m)
 389         return m
 390
 391     def getVertexCount(self):
 392         return len(self.vertexArray.vertices)
 393
 394
 395 class Bone(object):
 396     __slots__=['index', 'name', 'pos', 'parent_index', 'tail_index', 'type']
 397     def __init__(self, name, pos):
 398         self.index=-1
 399         self.name=name
 400         self.pos=[pos.x, pos.y, pos.z]
 401         self.parent_index=None
 402         self.tail_index=None
 403         self.type=0
 404
 405     def __str__(self):
 406         return "<Bone %s %d>" % (self.name, self.type)
 407
 408 class BoneBuilder(object):
 409     __slots__=['bones', 'boneMap', 'ik_list']
 410     def __init__(self):
 411         self.bones=[]
 412         self.boneMap={}
 413         self.ik_list=[]
 414
 415     def build(self, armatureObj):
 416         if armatureObj:
 417             armature=armatureObj.getData()
 418             for b in armature.bones.values():
 419                 if not b.parent:
 420                     # root bone
 421                     bone=Bone(b.name, b.head['ARMATURESPACE'])
 422                     self.__addBone(bone)
 423                     self.__getBone(bone, b)
 424
 425         pose = armatureObj.getPose()
 426         for b in pose.bones.values():
 427             for c in b.constraints:
 428                 if c.type==Blender.Constraint.Type.IKSOLVER:
 429                     # IK effector
 430                     e=b
 431                     for i in range(c[Blender.Constraint.Settings.CHAINLEN]):
 432                         # IK影響下
 433                         self.__boneByName(e.name).type=4
 434                         e=e.parent
 435                     # IK target
 436                     assert(c[Blender.Constraint.Settings.TARGET]==armatureObj)
 437                     self.__boneByName(
 438                             c[Blender.Constraint.Settings.BONE]).type=2
 439                     # IK 接続先
 440                     link=self.__boneByName(b.name)
 441                     link_tail=self.bones[link.tail_index]
 442                     if link_tail.type==7:
 443                         # IK接続先
 444                         link_tail.type=6
 445
 446
 447     def __boneByName(self, name):
 448         return self.bones[self.boneMap[name]]
 449
 450     def __getBone(self, parent, b):
 451         if not Blender.Armature.CONNECTED in b.options:
 452             #print b, b.options
 453             pass
 454
 455         if len(b.children)==0:
 456             # 末端の非表示ボーン
 457             bone=Bone(b.name+'_tail', b.tail['ARMATURESPACE'])
 458             bone.type=7
 459             self.__addBone(bone)
 460             assert(parent)
 461             bone.parent_index=parent.index
 462             parent.tail_index=bone.index
 463             return
 464
 465         for i, c in enumerate(b.children):
 466             bone=Bone(c.name, c.head['ARMATURESPACE'])
 467             self.__addBone(bone)
 468             if parent:
 469                 bone.parent_index=parent.index
 470                 if i==0:
 471                     parent.tail_index=bone.index
 472             self.__getBone(bone, c)
 473
 474     def __addBone(self, bone):
 475         bone.index=len(self.bones)
 476         self.bones.append(bone)
 477         self.boneMap[bone.name]=bone.index
 478
 479
 480 class PmdExporter(object):
 481
 482     def setup(self, scene):
 483         # 木構造を構築する
 484         object_node_map={}
 485         for o in scene.objects:
 486             object_node_map[o]=Node(o)
 487         for node in object_node_map.values():
 488             if node.o.parent:
 489                 object_node_map[node.o.parent].children.append(node)
 490         # ルートを得る
 491         root=object_node_map[scene.objects.active]
 492
 493         # ワンスキンメッシュを作る
 494         self.oneSkinMesh=OneSkinMesh(root)
 495         print(self.oneSkinMesh)
 496         self.name=root.o.name
 497
 498     def write(self, path):
 499         io=pmd.IO()
 500         io.name=self.name
 501         io.comment="blender export"
 502         io.version=1.0
 503
 504         # bones
 505         builder=BoneBuilder()
 506         builder.build(self.oneSkinMesh.armatureObj)
 507         for b in builder.bones:
 508             bone=io.addBone()
 509             bone.name=b.name
 510             bone.type=b.type
 511             bone.parent_index=b.parent_index if b.parent_index!=None else 0xFFFF
 512             bone.tail_index=b.tail_index if b.tail_index!=None else 0
 513             # ToDo
 514             bone.ik_index=0xFFFF
 515             # convert right-handed z-up to left-handed y-up
 516             bone.pos.x=b.pos[0]
 517             bone.pos.y=b.pos[2]
 518             bone.pos.z=b.pos[1]
 519
 520         # 頂点
 521         for pos, normal, uv, b0, b1, weight in self.oneSkinMesh.vertexArray.zip():
 522             # convert right-handed z-up to left-handed y-up
 523             v=io.addVertex()
 524             v.pos.x=pos[0]
 525             v.pos.y=pos[2]
 526             v.pos.z=pos[1]
 527             v.normal.x=normal[0]
 528             v.normal.y=normal[2]
 529             v.normal.z=normal[1]
 530             v.uv.x=uv[0]
 531             v.uv.y=uv[1]
 532             v.bone0=builder.boneMap[b0] if b0 in builder.boneMap else 0
 533             v.bone1=builder.boneMap[b1] if b1 in builder.boneMap else 0
 534             v.weight0=int(100*weight)
 535             v.edge_flag=0 # edge flag, 0: enable edge, 1: not edge
 536
 537         # 面とマテリアル
 538         vertexCount=self.oneSkinMesh.getVertexCount()
 539         for m, indices in self.oneSkinMesh.vertexArray.indexArrays.items():
 540             m=Blender.Material.Get(m)
 541             # マテリアル
 542             material=io.addMaterial()
 543             material.diffuse.r=m.R
 544             material.diffuse.g=m.G
 545             material.diffuse.b=m.B
 546             material.diffuse.a=m.alpha
 547             material.sinness=m.spec
 548             material.specular.r=m.specR
 549             material.specular.g=m.specG
 550             material.specular.b=m.specB
 551             material.ambient.r=m.amb
 552             material.ambient.g=m.amb
 553             material.ambient.b=m.amb
 554             material.vertex_count=len(indices)
 555             material.toon_index=0
 556             # ToDo
 557             material.texture=""
 558             # 面
 559             for i in indices:
 560                 assert(i<vertexCount)
 561             for i in xrange(0, len(indices), 3):
 562                 # reverse triangle
 563                 io.indices.append(indices[i+2])
 564                 io.indices.append(indices[i+1])
 565                 io.indices.append(indices[i])
 566
 567                 #io.indices.append(indices[i])
 568                 #io.indices.append(indices[i+1])
 569                 #io.indices.append(indices[i+2])
 570
 571         # 表情
 572         for m in self.oneSkinMesh.morphList:
 573             # morph
 574             morph=io.addMorph()
 575             morph.name=m.name
 576             morph.type=m.type
 577             for index, offset in zip(m.indices, m.offsets):
 578                 # convert right-handed z-up to left-handed y-up
 579                 morph.append(index, offset[0], offset[2], offset[1])
 580             morph.vertex_count=len(m.indices)
 581
 582         # 書き込み
 583         return io.write(path.encode(FS_ENCODING))
 584
 585
 586 def export_pmd(filename):
 587     filename=filename.decode(INTERNAL_ENCODING)
 588
 589     Blender.Window.WaitCursor(1)
 590     t = Blender.sys.time()
 591
 592     if not filename.lower().endswith(EXTENSION):
 593         filename += EXTENSION
 594     print "pmd exporter: %s" % filename
 595
 596     exporter=PmdExporter()
 597
 598     # 情報収集
 599     exporter.setup(Blender.Scene.GetCurrent())
 600
 601     # 出力
 602     exporter.write(filename)
 603
 604     print 'finished in %.2f seconds' % (Blender.sys.time()-t)
 605     Blender.Redraw()
 606     Blender.Window.WaitCursor(0)
 607
 608
 609 Blender.Window.FileSelector(
 610         export_pmd,
 611         'Export Metasequoia PMD',
 612         Blender.sys.makename(ext=EXTENSION))
 613