blender26-meshio/import_pmx.py

   1 # coding: utf-8
   2 """
   3 PMXモデルをインポートする。
   4
   5 1マテリアル、1オブジェクトで作成する。
   6 """
   7 import os
   8 import bpy
   9 from . import bl
  10 from .pymeshio import pmx
  11 from .pymeshio.pmx import reader
  12
  13
  14 def convert_coord(pos):
  15     """
  16     Left handed y-up to Right handed z-up
  17     """
  18     return (pos.x, pos.z, pos.y)
  19
  20 def VtoV(v):
  21     return bl.createVector(v.x, v.y, v.z)
  22
  23 def get_object_name(fmt, index, name):
  24     """
  25     object名を作る。最大21バイト
  26     """
  27     len_list=[len(name[:i].encode('utf-8')) for i in range(1, len(name)+1, 1)]
  28     letter_count=0
  29     prefix=fmt.format(index)
  30     max_length=21-len(prefix)
  31     for str_len in len_list:
  32         if str_len>max_length:
  33             break
  34         letter_count+=1
  35     name=prefix+name[:letter_count]
  36     print("%s(%d)" % (name, letter_count))
  37     return name
  38
  39 def __import_joints(joints, rigidbodies):
  40     print("create joints")
  41     container=bl.object.createEmpty('Joints')
  42     layers=[
  43         True, False, False, False, False, False, False, False, False, False,
  44         False, False, False, False, False, False, False, False, False, False,
  45             ]
  46     material=bl.material.create('joint')
  47     material.diffuse_color=(1, 0, 0)
  48     constraintMeshes=[]
  49     for i, c in enumerate(joints):
  50         bpy.ops.mesh.primitive_uv_sphere_add(
  51                 segments=8,
  52                 ring_count=4,
  53                 size=0.1,
  54                 location=(c.position.x, c.position.z, c.position.y),
  55                 layers=layers
  56                 )
  57         meshObject=bl.object.getActive()
  58         constraintMeshes.append(meshObject)
  59         mesh=bl.object.getData(meshObject)
  60         bl.mesh.addMaterial(mesh, material)
  61         meshObject.name=get_object_name("j{0:02}:", i, c.name)
  62         #meshObject.draw_transparent=True
  63         #meshObject.draw_wire=True
  64         meshObject.draw_type='SOLID'
  65         rot=c.rotation
  66         meshObject.rotation_euler=(-rot.x, -rot.z, -rot.y)
  67
  68         meshObject[bl.CONSTRAINT_NAME]=c.name
  69         meshObject[bl.CONSTRAINT_A]=rigidbodies[c.rigidbody_index_a].name
  70         meshObject[bl.CONSTRAINT_B]=rigidbodies[c.rigidbody_index_b].name
  71         meshObject[bl.CONSTRAINT_POS_MIN]=VtoV(c.translation_limit_min)
  72         meshObject[bl.CONSTRAINT_POS_MAX]=VtoV(c.translation_limit_max)
  73         meshObject[bl.CONSTRAINT_ROT_MIN]=VtoV(c.rotation_limit_min)
  74         meshObject[bl.CONSTRAINT_ROT_MAX]=VtoV(c.rotation_limit_max)
  75         meshObject[bl.CONSTRAINT_SPRING_POS]=VtoV(c.spring_constant_translation)
  76         meshObject[bl.CONSTRAINT_SPRING_ROT]=VtoV(c.spring_constant_rotation)
  77
  78     for meshObject in reversed(constraintMeshes):
  79         bl.object.makeParent(container, meshObject)
  80
  81     return container
  82
  83 def __importRigidBodies(rigidbodies, bones):
  84     print("create rigid bodies")
  85
  86     container=bl.object.createEmpty('RigidBodies')
  87     layers=[
  88         True, False, False, False, False, False, False, False, False, False,
  89         False, False, False, False, False, False, False, False, False, False,
  90             ]
  91     material=bl.material.create('rigidBody')
  92     rigidMeshes=[]
  93     for i, rigid in enumerate(rigidbodies):
  94         if rigid.bone_index==-1:
  95             # no reference bone
  96             bone=bones[0]
  97         else:
  98             bone=bones[rigid.bone_index]
  99         pos=rigid.shape_position
 100         size=rigid.shape_size
 101
 102         if rigid.shape_type==0:
 103             bpy.ops.mesh.primitive_ico_sphere_add(
 104                     location=(pos.x, pos.z, pos.y),
 105                     layers=layers
 106                     )
 107             bpy.ops.transform.resize(
 108                     value=(size.x, size.x, size.x))
 109         elif rigid.shape_type==1:
 110             bpy.ops.mesh.primitive_cube_add(
 111                     location=(pos.x, pos.z, pos.y),
 112                     layers=layers
 113                     )
 114             bpy.ops.transform.resize(
 115                     value=(size.x, size.z, size.y))
 116         elif rigid.shape_type==2:
 117             bpy.ops.mesh.primitive_cylinder_add(
 118                     location=(pos.x, pos.z, pos.y),
 119                     layers=layers
 120                     )
 121             bpy.ops.transform.resize(
 122                     value=(size.x, size.x, size.y))
 123         else:
 124             assert(False)
 125
 126         meshObject=bl.object.getActive()
 127         mesh=bl.object.getData(meshObject)
 128         rigidMeshes.append(meshObject)
 129         bl.mesh.addMaterial(mesh, material)
 130         meshObject.name=get_object_name("r{0:02}:", i, rigid.name)
 131         #meshObject.draw_transparent=True
 132         #meshObject.draw_wire=True
 133         meshObject.draw_type='WIRE'
 134         rot=rigid.shape_rotation
 135         meshObject.rotation_euler=(-rot.x, -rot.z, -rot.y)
 136
 137         meshObject[bl.RIGID_NAME]=rigid.name
 138         meshObject[bl.RIGID_SHAPE_TYPE]=rigid.shape_type
 139         meshObject[bl.RIGID_PROCESS_TYPE]=rigid.mode
 140         meshObject[bl.RIGID_BONE_NAME]=bone.name
 141         meshObject[bl.RIGID_GROUP]=rigid.collision_group
 142         meshObject[bl.RIGID_INTERSECTION_GROUP]=rigid.no_collision_group
 143         meshObject[bl.RIGID_WEIGHT]=rigid.param.mass
 144         meshObject[bl.RIGID_LINEAR_DAMPING]=rigid.param.linear_damping
 145         meshObject[bl.RIGID_ANGULAR_DAMPING]=rigid.param.angular_damping
 146         meshObject[bl.RIGID_RESTITUTION]=rigid.param.restitution
 147         meshObject[bl.RIGID_FRICTION]=rigid.param.friction
 148
 149     for meshObject in reversed(rigidMeshes):
 150         bl.object.makeParent(container, meshObject)
 151
 152     return container
 153
 154 def __create_a_material(m, name, textures_and_images):
 155     """
 156     materialを作成する
 157
 158     :Params:
 159         m
 160             pymeshio.pmx.Material
 161         name
 162             material name
 163         textures_and_images
 164             list of (texture, image)
 165     """
 166     material = bl.material.create(name)
 167     # diffuse
 168     material.diffuse_shader='FRESNEL'
 169     material.diffuse_color=[m.diffuse_color.r, m.diffuse_color.g, m.diffuse_color.b]
 170     material.alpha=m.alpha
 171     # specular
 172     material.specular_shader='TOON'
 173     material.specular_color=[m.specular_color.r, m.specular_color.g, m.specular_color.b]
 174     material.specular_toon_size=int(m.specular_factor)
 175     # ambient
 176     material.mirror_color=[m.ambient_color.r, m.ambient_color.g, m.ambient_color.b]
 177     # todo
 178     # flag
 179     # edge_color
 180     # edge_size
 181     # other
 182     material.preview_render_type='FLAT'
 183     material.use_transparency=True
 184     # texture
 185     if m.texture_index!=-1:
 186         bl.material.addTexture(material, textures_and_images[m.texture_index][0])
 187     return material
 188
 189 def __create_armature(bones, display_slots):
 190     """
 191     armatureを作成する
 192
 193     :Params:
 194         bones
 195             list of pymeshio.pmx.Bone
 196     """
 197     armature, armature_object=bl.armature.create()
 198
 199     # create bones
 200     bl.armature.makeEditable(armature_object)
 201     def create_bone(b):
 202         bone=bl.armature.createBone(armature, b.name)
 203         # bone position
 204         bone.head=bl.createVector(*convert_coord(b.position))
 205         if not b.getConnectionFlag():
 206             bone.tail=bl.createVector(*convert_coord(b.position))
 207         elif not b.getVisibleFlag():
 208             bone.tail=bone.head+bl.createVector(0, 1, 0)
 209
 210         return bone
 211     bl_bones=[create_bone(b) for b in bones]
 212
 213     # build skeleton
 214     for b, bone in zip(bones, bl_bones):
 215         assert(b.name==bone.name)
 216         if b.parent_index!=-1:
 217             #print("%s -> %s" % (bones[b.parent_index].name, b.name))
 218             parent_bone=bl_bones[b.parent_index]
 219             bone.parent=parent_bone
 220             if b.getConnectionFlag() and b.tail_index!=-1:
 221                 assert(b.tail_index!=0)
 222                 tail_bone=bl_bones[b.tail_index]
 223                 bone.tail=tail_bone.head
 224                 bl.bone.setConnected(tail_bone)
 225         else:
 226             print("no parent %s" % b.name)
 227     bl.armature.update(armature)
 228
 229     # create ik constraint
 230     bl.enterObjectMode()
 231     pose = bl.object.getPose(armature_object)
 232     for b, bone in zip(bones, bl_bones):
 233         if b.getIkFlag():
 234             ik=b.ik
 235             assert(len(ik.link)<16)
 236             p_bone=pose.bones[bones[ik.target_index].name]
 237             assert(p_bone)
 238             constraint=bl.armature.createIkConstraint(
 239                     armature_object, p_bone, bone.name,
 240                     ik.link, ik.limit_radian, ik.loop)
 241     bl.armature.makeEditable(armature_object)
 242     bl.armature.update(armature)
 243
 244     # create bone group
 245     bl.enterObjectMode()
 246     pose = bl.object.getPose(armature_object)
 247     for i, ds in enumerate(display_slots):
 248         print(ds)
 249         g=bl.object.createBoneGroup(armature_object, ds.name, "THEME%02d" % (i+1))
 250         for t, index in ds.references:
 251             if t==0:
 252                 name=bones[index].name
 253                 try:
 254                     pose.bones[name].bone_group=g
 255                 except KeyError as e:
 256                     print("pose %s is not found" % name)
 257
 258     bl.enterObjectMode()
 259     return armature_object
 260
 261 def _execute(filepath):
 262     """
 263     importerr 本体
 264     """
 265     print(filepath)
 266
 267     model=reader.read_from_file(filepath)
 268     if not model:
 269         print("fail to load %s" % filepath)
 270         return
 271     print(model)
 272
 273     # メッシュをまとめるエンプティオブジェクト
 274     model_name=model.english_name
 275     if len(model_name)==0:
 276         model_name=os.path.basename(filepath)
 277     root_object=bl.object.createEmpty(model_name)
 278     root_object[bl.MMD_MB_NAME]=model.name
 279     root_object[bl.MMD_MB_COMMENT]=model.comment
 280     root_object[bl.MMD_COMMENT]=model.english_comment
 281
 282     # armatureを作る
 283     armature_object=__create_armature(model.bones, model.display_slots)
 284     if armature_object:
 285         bl.object.makeParent(root_object, armature_object)
 286
 287     # テクスチャを作る
 288     texture_dir=os.path.dirname(filepath)
 289     textures_and_images=[bl.texture.create(os.path.join(texture_dir, t))
 290             for t in model.textures]
 291     print(textures_and_images)
 292
 293     index_generator=(i for i in model.indices)
 294     # 頂点配列。(Left handed y-up) to (Right handed z-up)
 295     vertices=[convert_coord(pos)
 296             for pos in (v.position for v in model.vertices)]
 297
 298     for i, m in enumerate(model.materials):
 299         name=get_object_name("{0:02}:", i, m.name)
 300         ####################
 301         # material
 302         ####################
 303         material=__create_a_material(m, name, textures_and_images)
 304
 305         ####################
 306         # mesh object
 307         ####################
 308         # object名はutf-8で21byteまで
 309         mesh, mesh_object=bl.mesh.create(name)
 310         bl.mesh.addMaterial(mesh, material)
 311         # activate object
 312         bl.object.deselectAll()
 313         bl.object.activate(mesh_object)
 314         bl.object.makeParent(root_object, mesh_object)
 315
 316         ####################
 317         # vertices & faces
 318         ####################
 319         indices=[next(index_generator)
 320                     for _ in range(m.vertex_count)]
 321         used_indices=set(indices)
 322         bl.mesh.addGeometry(mesh, vertices,
 323                 [(indices[i], indices[i+1], indices[i+2])
 324                     for i in range(0, len(indices), 3)])
 325         assert(len(model.vertices), len(mesh.vertices))
 326
 327         # assign material
 328         bl.mesh.addUV(mesh)
 329         hasTexture=bl.material.hasTexture(material)
 330         if hasTexture:
 331             index_gen=(i for i in indices)
 332             image=(textures_and_images.get[m.texture_index]
 333                     if m.texture_index in textures_and_images
 334                     else None)
 335         for i, face in enumerate(mesh.faces):
 336             bl.face.setMaterial(face, 0)
 337             if hasTexture:
 338                 uv0=model.vertices[next(index_gen)].uv
 339                 uv1=model.vertices[next(index_gen)].uv
 340                 uv2=model.vertices[next(index_gen)].uv
 341                 bl.mesh.setFaceUV(mesh, i, face, [# fix uv
 342                     (uv0.x, 1.0-uv0.y),
 343                     (uv1.x, 1.0-uv1.y),
 344                     (uv2.x, 1.0-uv2.y)
 345                     ],
 346                     image)
 347
 348         ####################
 349         # armature
 350         ####################
 351         if armature_object:
 352             # armature modifirer
 353             bl.modifier.addArmature(mesh_object, armature_object)
 354             # set vertex attributes(normal, bone weights)
 355             bl.mesh.useVertexUV(mesh)
 356             for i, (v,  mvert) in enumerate(zip(model.vertices, mesh.vertices)):
 357                 bl.vertex.setNormal(mvert, convert_coord(v.normal))
 358                 if isinstance(v.deform, pmx.Bdef1):
 359                     bl.object.assignVertexGroup(mesh_object,
 360                             model.bones[v.deform.index0].name, i, 1.0)
 361                 elif isinstance(v.deform, pmx.Bdef2):
 362                     bl.object.assignVertexGroup(mesh_object,
 363                             model.bones[v.deform.index0].name, i, v.deform.weight0)
 364                     bl.object.assignVertexGroup(mesh_object,
 365                             model.bones[v.deform.index1].name, i, 1.0-v.deform.weight0)
 366                 else:
 367                     raise Exception("unknown deform: %s" % v.deform)
 368
 369         ####################
 370         # shape keys
 371         ####################
 372         # set shape_key pin
 373         bl.object.pinShape(mesh_object, True)
 374         # create base key
 375         baseShapeBlock=bl.object.addShapeKey(mesh_object, bl.BASE_SHAPE_NAME)
 376         mesh.update()
 377         for m in model.morphs:
 378             new_shape_key=bl.object.addShapeKey(mesh_object, m.name)
 379             for o in m.offsets:
 380                 if isinstance(o, pmx.VertexMorphOffset):
 381                     bl.shapekey.assign(new_shape_key,
 382                             o.vertex_index,
 383                             mesh.vertices[o.vertex_index].co+
 384                             bl.createVector(*convert_coord(o.position_offset)))
 385                 else:
 386                     raise Exception("unknown morph type: %s" % o)
 387         # select base shape
 388         bl.object.setActivateShapeKey(mesh_object, 0)
 389
 390         #############################
 391         # clean up not used vertices
 392         # in the material.
 393         #############################
 394         bl.mesh.vertsDelete(mesh, [i for i in range(len(mesh.vertices))
 395             if i not in used_indices])
 396
 397     # import rigid bodies
 398     rigidbody_object=__importRigidBodies(model.rigidbodies, model.bones)
 399     if rigidbody_object:
 400         bl.object.makeParent(root_object, rigidbody_object)
 401
 402     # import joints
 403     joint_object=__import_joints(model.joints, model.rigidbodies)
 404     if joint_object:
 405         bl.object.makeParent(root_object, joint_object)
 406
 407     return {'FINISHED'}
 408