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 EXTENSION = u'.pmd'
  33
  34
  35 class Node(object):
  36     __slots__=['o', 'children']
  37     def __init__(self, o):
  38         self.o=o
  39         self.children=[]
  40
  41
  42 ###############################################################################
  43 # Blenderのメッシュをワンスキンメッシュ化する
  44 ###############################################################################
  45 def near(x, y, EPSILON=1e-5):
  46     d=x-y
  47     return d>=-EPSILON and d<=EPSILON
  48
  49
  50 class VertexKey(object):
  51     """
  52     重複頂点の検索キー
  53     """
  54     __slots__=[
  55             'x', 'y', 'z', # 位置
  56             'nx', 'ny', 'nz', # 法線
  57             'u', 'v', # uv
  58             ]
  59
  60     def __init__(self, x, y, z, nx, ny, nz, u, v):
  61         self.x=x
  62         self.y=y
  63         self.z=z
  64         self.nx=nx
  65         self.ny=ny
  66         self.nz=nz
  67         self.u=u
  68         self.v=v
  69
  70     def __hash__(self):
  71         return int((self.x+self.y+self.z+self.nx+self.ny+self.nz+self.u+self.v)*100)
  72
  73     def __eq__(self, rhs):
  74         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)
  75
  76
  77 class VertexArray(object):
  78     """
  79     頂点配列
  80     """
  81     def __init__(self):
  82         # マテリアル毎に分割したインデックス配列
  83         self.indexArrays={}
  84         # 頂点属性
  85         self.vertices=[]
  86         self.normals=[]
  87         self.uvs=[]
  88         # skinning属性
  89         self.b0=[]
  90         self.b1=[]
  91         self.weight=[]
  92
  93         self.vertexMap={}
  94
  95     def __str__(self):
  96         return "<VertexArray %d vertices, %d indexArrays>" % (
  97                 len(self.vertices), len(self.indexArrays))
  98
  99     def zip(self):
 100         return zip(
 101                 self.vertices, self.normals, self.uvs,
 102                 self.b0, self.b1, self.weight)
 103
 104     def getIndex(self, pos, normal, uv, b0, b1, weight0):
 105         """
 106         頂点属性からその頂点のインデックスを得る
 107         """
 108         key=VertexKey(
 109                 pos[0], pos[1], pos[2],
 110                 normal[0], normal[1], normal[2],
 111                 uv[0], uv[1])
 112         if not key in self.vertexMap:
 113             self.vertexMap[key]=len(self.vertices)
 114             self.vertices.append((pos.x, pos.y, pos.z))
 115             self.normals.append((normal.x, normal.y, normal.z))
 116             self.uvs.append((uv.x, uv.y))
 117             # ToDo
 118             self.b0.append(b0)
 119             self.b1.append(b1)
 120             self.weight.append(weight0)
 121         return self.vertexMap[key]
 122
 123     def addTriangle(self,
 124             material,
 125             pos0, pos1, pos2,
 126             n0, n1, n2,
 127             uv0, uv1, uv2,
 128             b0_0, b0_1, b0_2,
 129             b1_0, b1_1, b1_2,
 130             weight0, weight1, weight2
 131             ):
 132         if not material in self.indexArrays:
 133             self.indexArrays[material]=[]
 134
 135         index0=self.getIndex(pos0, n0, uv0, b0_0, b1_0, weight0)
 136         index1=self.getIndex(pos1, n1, uv1, b0_1, b1_1, weight1)
 137         index2=self.getIndex(pos2, n2, uv2, b0_2, b1_2, weight2)
 138
 139         self.indexArrays[material]+=[index0, index1, index2]
 140
 141
 142 class OneSkinMesh(object):
 143     __slots__=['armatureObj', 'vertexArray']
 144     def __init__(self, root):
 145         self.armatureObj=None
 146         self.vertexArray=VertexArray()
 147         self.__create(root)
 148
 149     def __str__(self):
 150         return "<OneSkinMesh armature:%s, %s>" % (
 151                 self.armatureObj.name if self.armatureObj else None,
 152                 self.vertexArray)
 153
 154     def __create(self, node):
 155         if node.o.getType()=='Mesh':
 156             self.__addMesh(node.o)
 157
 158         for child in node.children:
 159             self.__create(child)
 160
 161     def __addMesh(self, obj):
 162         if obj.restrictDisplay:
 163             # 非表示
 164             return
 165
 166         print("export", obj.name)
 167
 168         ############################################################
 169         # search armature modifier
 170         ############################################################
 171         for m in obj.modifiers:
 172             if m.name=="Armature":
 173                 armatureObj=m[Blender.Modifier.Settings.OBJECT]
 174                 if not self.armatureObj:
 175                     self.armatureObj=armatureObj
 176                 elif self.armatureObj!=armatureObj:
 177                     print "warning! found multiple armature. ignored.", armatureObj.name
 178
 179         ############################################################
 180         # bone weight
 181         ############################################################
 182         mesh=obj.getData(mesh=True)
 183         weightMap={}
 184         secondWeightMap={}
 185         for name in mesh.getVertGroupNames():
 186             for i, w in mesh.getVertsFromGroup(name, 1):
 187                 if w>0:
 188                     if i in weightMap:
 189                         if i in secondWeightMap:
 190                             # 上位２つのweightを採用する
 191                             if w<secondWeightMap[i]:
 192                                 pass
 193                             elif w<weightMap[i]:
 194                                 # ２つ目を入れ替え
 195                                 secondWeightMap[i]=(name, w)
 196                             else:
 197                                 # １つ目を入れ替え
 198                                 weightMap[i]=(name, w)
 199                         else:
 200                             if w>weightMap[i][1]:
 201                                 # 多い方をweightMapに
 202                                 secondWeightMap[i]=weightMap[i]
 203                                 weightMap[i]=(name, w)
 204                             else:
 205                                 secondWeightMap[i]=(name, w)
 206                     else:
 207                         weightMap[i]=(name, w)
 208
 209         # 合計値が1になるようにする
 210         for i in xrange(len(mesh.verts)):
 211         #for i, name_weight in weightMap.items():
 212             if i in secondWeightMap:
 213                 secondWeightMap[i]=(secondWeightMap[i][0], 1.0-weightMap[i][1])
 214             elif i in weightMap:
 215                 weightMap[i]=(weightMap[i][0], 1.0)
 216                 secondWeightMap[i]=("", 0)
 217             else:
 218                 print "no weight vertex"
 219                 weightMap[i]=("", 0)
 220                 secondWeightMap[i]=("", 0)
 221
 222
 223         ############################################################
 224         # faces
 225         # 新たにメッシュを生成する
 226         ############################################################
 227         mesh=Blender.Mesh.New()
 228         # not applied modifiers
 229         mesh.getFromObject(obj.name, 1)
 230         # apply object transform
 231         mesh.transform(obj.getMatrix())
 232         if len(mesh.verts)==0:
 233             return
 234
 235         for face in mesh.faces:
 236             faceVertexCount=len(face.v)
 237             material=mesh.materials[face.mat]
 238             if faceVertexCount==3:
 239                 v0=face.v[0]
 240                 v1=face.v[1]
 241                 v2=face.v[2]
 242                 # triangle
 243                 self.vertexArray.addTriangle(
 244                         material.name,
 245                         v0.co, v1.co, v2.co,
 246                         v0.no, v1.no, v2.no,
 247                         face.uv[0], face.uv[1], face.uv[2],
 248                         weightMap[v0.index][0],
 249                         weightMap[v1.index][0],
 250                         weightMap[v2.index][0],
 251                         secondWeightMap[v0.index][0],
 252                         secondWeightMap[v1.index][0],
 253                         secondWeightMap[v2.index][0],
 254                         weightMap[v0.index][1],
 255                         weightMap[v1.index][1],
 256                         weightMap[v2.index][1]
 257                         )
 258             elif faceVertexCount==4:
 259                 v0=face.v[0]
 260                 v1=face.v[1]
 261                 v2=face.v[2]
 262                 v3=face.v[3]
 263                 # quadrangle
 264                 self.vertexArray.addTriangle(
 265                         material.name,
 266                         v0.co, v1.co, v2.co,
 267                         v0.no, v1.no, v2.no,
 268                         face.uv[0], face.uv[1], face.uv[2],
 269                         weightMap[v0.index][0],
 270                         weightMap[v1.index][0],
 271                         weightMap[v2.index][0],
 272                         secondWeightMap[v0.index][0],
 273                         secondWeightMap[v1.index][0],
 274                         secondWeightMap[v2.index][0],
 275                         weightMap[v0.index][1],
 276                         weightMap[v1.index][1],
 277                         weightMap[v2.index][1]
 278                         )
 279                 self.vertexArray.addTriangle(
 280                         material.name,
 281                         v2.co, v3.co, v0.co,
 282                         v2.no, v3.no, v0.no,
 283                         face.uv[2], face.uv[3], face.uv[0],
 284                         weightMap[v2.index][0],
 285                         weightMap[v3.index][0],
 286                         weightMap[v0.index][0],
 287                         secondWeightMap[v2.index][0],
 288                         secondWeightMap[v3.index][0],
 289                         secondWeightMap[v0.index][0],
 290                         weightMap[v2.index][1],
 291                         weightMap[v3.index][1],
 292                         weightMap[v0.index][1]
 293                         )
 294
 295     def getVertexCount(self):
 296         return len(self.vertexArray.vertices)
 297
 298
 299 class Bone(object):
 300     def __init__(self, name, pos):
 301         self.name=name
 302         self.pos=[pos.x, pos.y, pos.z]
 303         self.parent_index=None
 304         self.tail_index=None
 305         self.type=0
 306
 307     def __str__(self):
 308         return "<Bone %s>" % self.name
 309
 310 class BoneBuilder(object):
 311     __slots__=['bones', 'boneMap']
 312     def __init__(self):
 313         self.bones=[]
 314         self.boneMap={}
 315
 316     def build(self, armatureObj):
 317         if armatureObj:
 318             armature=armatureObj.getData()
 319             for b in armature.bones.values():
 320                 if not b.parent:
 321                     # root bone
 322                     bone=Bone(b.name, b.head['ARMATURESPACE'])
 323                     self.addBone(bone)
 324                     self.getBone(bone, b)
 325
 326     def getBone(self, parent, b):
 327         if len(b.children)==0:
 328             # 末端の非表示ボーン
 329             bone=Bone(b.name+'_tail', b.tail['ARMATURESPACE'])
 330             bone.type=7
 331             self.addBone(bone)
 332             assert(parent)
 333             bone.parent_index=parent.index
 334             parent.tail_index=bone.index
 335             return
 336
 337         for i, c in enumerate(b.children):
 338             bone=Bone(c.name, c.head['ARMATURESPACE'])
 339             self.addBone(bone)
 340             if parent:
 341                 bone.parent_index=parent.index
 342                 if i==0:
 343                     parent.tail_index=bone.index
 344             self.getBone(bone, c)
 345
 346     def addBone(self, bone):
 347         bone.index=len(self.bones)
 348         self.bones.append(bone)
 349         self.boneMap[bone.name]=bone.index
 350
 351
 352 class PmdExporter(object):
 353
 354     def setup(self, scene):
 355         # 木構造を構築する
 356         object_node_map={}
 357         for o in scene.objects:
 358             object_node_map[o]=Node(o)
 359         for node in object_node_map.values():
 360             if node.o.parent:
 361                 object_node_map[node.o.parent].children.append(node)
 362         # ルートを得る
 363         root=object_node_map[scene.objects.active]
 364
 365         # ワンスキンメッシュを作る
 366         self.oneSkinMesh=OneSkinMesh(root)
 367         print(self.oneSkinMesh)
 368         self.name=root.o.name
 369
 370     def write(self, path):
 371         io=pmd.IO()
 372         io.name=self.name
 373         io.comment="blender export"
 374         io.version=1.0
 375
 376         # bones
 377         builder=BoneBuilder()
 378         builder.build(self.oneSkinMesh.armatureObj)
 379         for b in builder.bones:
 380             bone=io.addBone()
 381             bone.name=b.name
 382             bone.type=b.type
 383             bone.parent_index=b.parent_index if b.parent_index!=None else 0xFFFF
 384             bone.tail_index=b.tail_index if b.tail_index!=None else 0
 385             # ToDo
 386             bone.ik_index=0xFFFF
 387             # convert right-handed z-up to left-handed y-up
 388             bone.pos.x=b.pos[0]
 389             bone.pos.y=b.pos[2]
 390             bone.pos.z=b.pos[1]
 391
 392         # 頂点
 393         for pos, normal, uv, b0, b1, weight in self.oneSkinMesh.vertexArray.zip():
 394             # convert right-handed z-up to left-handed y-up
 395             v=io.addVertex()
 396             v.pos.x=pos[0]
 397             v.pos.y=pos[2]
 398             v.pos.z=pos[1]
 399             v.normal.x=normal[0]
 400             v.normal.y=normal[2]
 401             v.normal.z=normal[1]
 402             v.uv.x=uv[0]
 403             v.uv.y=uv[1]
 404             v.bone0=builder.boneMap[b0] if b0 in builder.boneMap else 0
 405             v.bone1=builder.boneMap[b1] if b1 in builder.boneMap else 0
 406             v.weight0=int(100*weight)
 407             v.edge_flag=0 # edge flag, 0: enable edge, 1: not edge
 408
 409         # 面とマテリアル
 410         vertexCount=self.oneSkinMesh.getVertexCount()
 411         for m, indices in self.oneSkinMesh.vertexArray.indexArrays.items():
 412             print(m, len(indices))
 413             m=Blender.Material.Get(m)
 414             # マテリアル
 415             material=io.addMaterial()
 416             material.diffuse.r=m.R
 417             material.diffuse.g=m.G
 418             material.diffuse.b=m.B
 419             material.diffuse.a=m.alpha
 420             material.sinness=m.spec
 421             material.specular.r=m.specR
 422             material.specular.g=m.specG
 423             material.specular.b=m.specB
 424             material.ambient.r=m.amb
 425             material.ambient.g=m.amb
 426             material.ambient.b=m.amb
 427             material.vertex_count=len(indices)
 428             material.toon_index=0
 429             # ToDo
 430             material.texture=""
 431             # 面
 432             for i in indices:
 433                 assert(i<vertexCount)
 434             for i in xrange(0, len(indices), 3):
 435                 # reverse triangle
 436                 io.indices.append(indices[i+2])
 437                 io.indices.append(indices[i+1])
 438                 io.indices.append(indices[i])
 439
 440                 #io.indices.append(indices[i])
 441                 #io.indices.append(indices[i+1])
 442                 #io.indices.append(indices[i+2])
 443
 444         # 書き込み
 445         return io.write(path.encode(FS_ENCODING))
 446
 447
 448 def export_pmd(filename):
 449     filename=filename.decode(INTERNAL_ENCODING)
 450
 451     Blender.Window.WaitCursor(1)
 452     t = Blender.sys.time()
 453
 454     if not filename.lower().endswith(EXTENSION):
 455         filename += EXTENSION
 456     print "pmd exporter: %s" % filename
 457
 458     exporter=PmdExporter()
 459
 460     # 情報収集
 461     exporter.setup(Blender.Scene.GetCurrent())
 462
 463     # 出力
 464     exporter.write(filename)
 465
 466     print 'finished in %.2f seconds' % (Blender.sys.time()-t)
 467     Blender.Redraw()
 468     Blender.Window.WaitCursor(0)
 469
 470
 471 Blender.Window.FileSelector(
 472         export_pmd,
 473         'Export Metasequoia PMD',
 474         Blender.sys.makename(ext=EXTENSION))
 475