add_mesh_extra_objects/add_mesh_teapot.py

   1 # SPDX-FileCopyrightText: 2012-2022 Blender Foundation
   2 #
   3 # SPDX-License-Identifier: GPL-2.0-or-later
   4
   5 # Author, Anthony D'Agostino
   6
   7 import bpy
   8 from bpy.props import (
   9     IntProperty,
  10     EnumProperty,
  11     )
  12 import mathutils
  13 import io
  14 import operator
  15 import functools
  16 from bpy_extras import object_utils
  17
  18
  19 class AddTeapot(bpy.types.Operator, object_utils.AddObjectHelper):
  20     bl_idname = "mesh.primitive_teapot_add"
  21     bl_label = "Add Teapot"
  22     bl_description = "Construct a teapot or teaspoon mesh"
  23     bl_options = {"REGISTER", "UNDO"}
  24
  25     resolution: IntProperty(
  26             name="Resolution",
  27             description="Resolution of the Teapot",
  28             default=5,
  29             min=2, max=15,
  30             )
  31     objecttype: EnumProperty(
  32             name="Object Type",
  33             description="Type of Bezier Object",
  34             items=(('1', "Teapot", "Construct a teapot mesh"),
  35                    ('2', "Tea Spoon", "Construct a teaspoon mesh")),
  36             default='1',
  37             )
  38
  39     def draw(self, context):
  40         layout = self.layout
  41
  42         box = layout.box()
  43         box.prop(self, 'resolution')
  44
  45         box = layout.box()
  46         box.prop(self, 'objecttype')
  47
  48         # generic transform props
  49         box = layout.box()
  50         box.prop(self, 'align', expand=True)
  51         box.prop(self, 'location', expand=True)
  52         box.prop(self, 'rotation', expand=True)
  53
  54     def execute(self, context):
  55         # turn off 'Enter Edit Mode'
  56         use_enter_edit_mode = bpy.context.preferences.edit.use_enter_edit_mode
  57         bpy.context.preferences.edit.use_enter_edit_mode = False
  58
  59         cmode = bpy.context.mode
  60         verts, faces = make_teapot(self.objecttype,
  61                                    self.resolution)
  62         # Actually create the mesh object from this geometry data.
  63         obj = create_mesh_object(self, context, verts, [], faces, "Teapot")
  64         bpy.ops.object.mode_set(mode='EDIT')
  65         bpy.ops.mesh.remove_doubles()
  66         if cmode != "EDIT_MESH":
  67             bpy.ops.object.mode_set(mode=cmode)
  68
  69         if use_enter_edit_mode:
  70             bpy.ops.object.mode_set(mode = 'EDIT')
  71
  72         # restore pre operator state
  73         bpy.context.preferences.edit.use_enter_edit_mode = use_enter_edit_mode
  74
  75         return {'FINISHED'}
  76
  77
  78 def create_mesh_face_hack(faces):
  79     # FIXME, faces with duplicate vertices shouldn't be created in the first place.
  80     faces_copy = []
  81     for f in faces:
  82         f_copy = []
  83         for i in f:
  84             if i not in f_copy:
  85                 f_copy.append(i)
  86         faces_copy.append(f_copy)
  87     faces[:] = faces_copy
  88
  89
  90 def create_mesh_object(self, context, verts, edges, faces, name):
  91
  92     create_mesh_face_hack(faces)
  93
  94     # Create new mesh
  95     mesh = bpy.data.meshes.new(name)
  96     # Make a mesh from a list of verts/edges/faces.
  97     mesh.from_pydata(verts, edges, faces)
  98     # Update mesh geometry after adding stuff.
  99     mesh.update()
 100
 101     return object_utils.object_data_add(context, mesh, operator=self)
 102
 103
 104 # ==========================
 105 # === Bezier patch Block ===
 106 # ==========================
 107
 108 def read_indexed_patch_file(filename):
 109     file = io.StringIO(filename)
 110     rawpatches = []
 111     patches = []
 112     numpatches = int(file.readline())
 113     for i in range(numpatches):
 114         line = file.readline()
 115         (a, b, c, d,
 116          e, f, g, h,
 117          i, j, k, l,
 118          m, n, o, p,
 119          ) = map(int, line.split(","))
 120         patches.append([[a, b, c, d], [e, f, g, h], [i, j, k, l], [m, n, o, p]])
 121         rawpatches.append([[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]])
 122     verts = []
 123     numverts = int(file.readline())
 124     for i in range(numverts):
 125         line = file.readline()
 126         v1, v2, v3 = map(float, line.split(","))
 127         verts.append((v1, v2, v3))
 128     for i in range(len(patches)):
 129         for j in range(4):      # len(patches[i])):
 130             for k in range(4):  # len(patches[i][j])):
 131                 index = patches[i][j][k] - 1
 132                 rawpatches[i][j][k] = verts[index]
 133     return rawpatches
 134
 135
 136 def patches_to_raw(patches, resolution):
 137     raw = []
 138     for patch in patches:
 139         verts = make_verts(patch, resolution)
 140         faces = make_faces(resolution)
 141         rawquads = indexed_to_rawquads(verts, faces)
 142         raw.append(rawquads)
 143     raw = functools.reduce(operator.add, raw)  # flatten the list
 144     return raw
 145
 146
 147 def make_bezier(ctrlpnts, resolution):
 148
 149     def b1(t):
 150         return t * t * t
 151
 152     def b2(t):
 153         return 3.0 * t * t * (1.0 - t)
 154
 155     def b3(t):
 156         return 3.0 * t * (1.0 - t) * (1.0 - t)
 157
 158     def b4(t):
 159         return (1.0 - t) * (1.0 - t) * (1.0 - t)
 160
 161     p1, p2, p3, p4 = map(mathutils.Vector, ctrlpnts)
 162
 163     def makevert(t):
 164         x, y, z = b1(t) * p1 + b2(t) * p2 + b3(t) * p3 + b4(t) * p4
 165         return (x, y, z)
 166     curveverts = [makevert(i / resolution) for i in range(resolution + 1)]
 167     return curveverts
 168
 169
 170 def make_verts(a, resolution):
 171     s = []
 172     for i in a:
 173         c = make_bezier(i, resolution)
 174         s.append(c)
 175     b = transpose(s)
 176     s = []
 177     for i in b:
 178         c = make_bezier(i, resolution)
 179         s.append(c)
 180     verts = s
 181     verts = functools.reduce(operator.add, verts)  # flatten the list
 182     return verts
 183
 184
 185 def make_faces(resolution):
 186     n = resolution + 1
 187     faces = []
 188     for i in range(resolution):
 189         for j in range(resolution):
 190             v1 = (i + 1) * n + j
 191             v2 = (i + 1) * n + j + 1
 192             v3 = i * n + j + 1
 193             v4 = i * n + j
 194             faces.append([v1, v2, v3, v4])
 195     return faces
 196
 197
 198 def indexed_to_rawquads(verts, faces):
 199     rows = len(faces)
 200     cols = len(faces[0])    # or 4
 201     rawquads = [[None] * cols for i in range(rows)]
 202     for i in range(rows):
 203         for j in range(cols):
 204             index = faces[i][j]
 205             rawquads[i][j] = verts[index]
 206     return rawquads
 207
 208
 209 def raw_to_indexed(rawfaces):
 210     # Generate verts and faces lists, without dups
 211     verts = []
 212     coords = {}
 213     index = 0
 214     for i in range(len(rawfaces)):
 215         for j in range(len(rawfaces[i])):
 216             vertex = rawfaces[i][j]
 217             if vertex not in coords:
 218                 coords[vertex] = index
 219                 index += 1
 220                 verts.append(vertex)
 221             rawfaces[i][j] = coords[vertex]
 222     return verts, rawfaces
 223
 224
 225 def transpose(rowsbycols):
 226     rows = len(rowsbycols)
 227     cols = len(rowsbycols[0])
 228     colsbyrows = [[None] * rows for i in range(cols)]
 229     for i in range(cols):
 230         for j in range(rows):
 231             colsbyrows[i][j] = rowsbycols[j][i]
 232     return colsbyrows
 233
 234
 235 def make_teapot(enumname, resolution):
 236     filenames = [None, teapot, teaspoon]
 237     try:
 238         indexes = int(enumname)
 239         filename = filenames[indexes]
 240     except:
 241         print("Add Teapot Error: EnumProperty could not be set")
 242         filename = filenames[1]
 243
 244     patches = read_indexed_patch_file(filename)
 245     raw = patches_to_raw(patches, resolution)
 246     verts, faces = raw_to_indexed(raw)
 247     return (verts, faces)
 248
 249
 250 # =================================
 251 # === Indexed Bezier Data Block ===
 252 # =================================
 253 teapot = """32
 254 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
 255 4,17,18,19,8,20,21,22,12,23,24,25,16,26,27,28
 256 19,29,30,31,22,32,33,34,25,35,36,37,28,38,39,40
 257 31,41,42,1,34,43,44,5,37,45,46,9,40,47,48,13
 258 13,14,15,16,49,50,51,52,53,54,55,56,57,58,59,60
 259 16,26,27,28,52,61,62,63,56,64,65,66,60,67,68,69
 260 28,38,39,40,63,70,71,72,66,73,74,75,69,76,77,78
 261 40,47,48,13,72,79,80,49,75,81,82,53,78,83,84,57
 262 57,58,59,60,85,86,87,88,89,90,91,92,93,94,95,96
 263 60,67,68,69,88,97,98,99,92,100,101,102,96,103,104,105
 264 69,76,77,78,99,106,107,108,102,109,110,111,105,112,113,114
 265 78,83,84,57,108,115,116,85,111,117,118,89,114,119,120,93
 266 121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136
 267 124,137,138,121,128,139,140,125,132,141,142,129,136,143,144,133
 268 133,134,135,136,145,146,147,148,149,150,151,152,69,153,154,155
 269 136,143,144,133,148,156,157,145,152,158,159,149,155,160,161,69
 270 162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177
 271 165,178,179,162,169,180,181,166,173,182,183,170,177,184,185,174
 272 174,175,176,177,186,187,188,189,190,191,192,193,194,195,196,197
 273 177,184,185,174,189,198,199,186,193,200,201,190,197,202,203,194
 274 204,204,204,204,207,208,209,210,211,211,211,211,212,213,214,215
 275 204,204,204,204,210,217,218,219,211,211,211,211,215,220,221,222
 276 204,204,204,204,219,224,225,226,211,211,211,211,222,227,228,229
 277 204,204,204,204,226,230,231,207,211,211,211,211,229,232,233,212
 278 212,213,214,215,234,235,236,237,238,239,240,241,242,243,244,245
 279 215,220,221,222,237,246,247,248,241,249,250,251,245,252,253,254
 280 222,227,228,229,248,255,256,257,251,258,259,260,254,261,262,263
 281 229,232,233,212,257,264,265,234,260,266,267,238,263,268,269,242
 282 270,270,270,270,279,280,281,282,275,276,277,278,271,272,273,274
 283 270,270,270,270,282,289,290,291,278,286,287,288,274,283,284,285
 284 270,270,270,270,291,298,299,300,288,295,296,297,285,292,293,294
 285 270,270,270,270,300,305,306,279,297,303,304,275,294,301,302,271
 286 306
 287 1.4,0.0,2.4
 288 1.4,-0.784,2.4
 289 0.784,-1.4,2.4
 290 0.0,-1.4,2.4
 291 1.3375,0.0,2.53125
 292 1.3375,-0.749,2.53125
 293 0.749,-1.3375,2.53125
 294 0.0,-1.3375,2.53125
 295 1.4375,0.0,2.53125
 296 1.4375,-0.805,2.53125
 297 0.805,-1.4375,2.53125
 298 0.0,-1.4375,2.53125
 299 1.5,0.0,2.4
 300 1.5,-0.84,2.4
 301 0.84,-1.5,2.4
 302 0.0,-1.5,2.4
 303 -0.784,-1.4,2.4
 304 -1.4,-0.784,2.4
 305 -1.4,0.0,2.4
 306 -0.749,-1.3375,2.53125
 307 -1.3375,-0.749,2.53125
 308 -1.3375,0.0,2.53125
 309 -0.805,-1.4375,2.53125
 310 -1.4375,-0.805,2.53125
 311 -1.4375,0.0,2.53125
 312 -0.84,-1.5,2.4
 313 -1.5,-0.84,2.4
 314 -1.5,0.0,2.4
 315 -1.4,0.784,2.4
 316 -0.784,1.4,2.4
 317 0.0,1.4,2.4
 318 -1.3375,0.749,2.53125
 319 -0.749,1.3375,2.53125
 320 0.0,1.3375,2.53125
 321 -1.4375,0.805,2.53125
 322 -0.805,1.4375,2.53125
 323 0.0,1.4375,2.53125
 324 -1.5,0.84,2.4
 325 -0.84,1.5,2.4
 326 0.0,1.5,2.4
 327 0.784,1.4,2.4
 328 1.4,0.784,2.4
 329 0.749,1.3375,2.53125
 330 1.3375,0.749,2.53125
 331 0.805,1.4375,2.53125
 332 1.4375,0.805,2.53125
 333 0.84,1.5,2.4
 334 1.5,0.84,2.4
 335 1.75,0.0,1.875
 336 1.75,-0.98,1.875
 337 0.98,-1.75,1.875
 338 0.0,-1.75,1.875
 339 2.0,0.0,1.35
 340 2.0,-1.12,1.35
 341 1.12,-2.0,1.35
 342 0.0,-2.0,1.35
 343 2.0,0.0,0.9
 344 2.0,-1.12,0.9
 345 1.12,-2.0,0.9
 346 0.0,-2.0,0.9
 347 -0.98,-1.75,1.875
 348 -1.75,-0.98,1.875
 349 -1.75,0.0,1.875
 350 -1.12,-2.0,1.35
 351 -2.0,-1.12,1.35
 352 -2.0,0.0,1.35
 353 -1.12,-2.0,0.9
 354 -2.0,-1.12,0.9
 355 -2.0,0.0,0.9
 356 -1.75,0.98,1.875
 357 -0.98,1.75,1.875
 358 0.0,1.75,1.875
 359 -2.0,1.12,1.35
 360 -1.12,2.0,1.35
 361 0.0,2.0,1.35
 362 -2.0,1.12,0.9
 363 -1.12,2.0,0.9
 364 0.0,2.0,0.9
 365 0.98,1.75,1.875
 366 1.75,0.98,1.875
 367 1.12,2.0,1.35
 368 2.0,1.12,1.35
 369 1.12,2.0,0.9
 370 2.0,1.12,0.9
 371 2.0,0.0,0.45
 372 2.0,-1.12,0.45
 373 1.12,-2.0,0.45
 374 0.0,-2.0,0.45
 375 1.5,0.0,0.225
 376 1.5,-0.84,0.225
 377 0.84,-1.5,0.225
 378 0.0,-1.5,0.225
 379 1.5,0.0,0.15
 380 1.5,-0.84,0.15
 381 0.84,-1.5,0.15
 382 0.0,-1.5,0.15
 383 -1.12,-2.0,0.45
 384 -2.0,-1.12,0.45
 385 -2.0,0.0,0.45
 386 -0.84,-1.5,0.225
 387 -1.5,-0.84,0.225
 388 -1.5,0.0,0.225
 389 -0.84,-1.5,0.15
 390 -1.5,-0.84,0.15
 391 -1.5,0.0,0.15
 392 -2.0,1.12,0.45
 393 -1.12,2.0,0.45
 394 0.0,2.0,0.45
 395 -1.5,0.84,0.225
 396 -0.84,1.5,0.225
 397 0.0,1.5,0.225
 398 -1.5,0.84,0.15
 399 -0.84,1.5,0.15
 400 0.0,1.5,0.15
 401 1.12,2.0,0.45
 402 2.0,1.12,0.45
 403 0.84,1.5,0.225
 404 1.5,0.84,0.225
 405 0.84,1.5,0.15
 406 1.5,0.84,0.15
 407 -1.6,0.0,2.025
 408 -1.6,-0.3,2.025
 409 -1.5,-0.3,2.25
 410 -1.5,0.0,2.25
 411 -2.3,0.0,2.025
 412 -2.3,-0.3,2.025
 413 -2.5,-0.3,2.25
 414 -2.5,0.0,2.25
 415 -2.7,0.0,2.025
 416 -2.7,-0.3,2.025
 417 -3.0,-0.3,2.25
 418 -3.0,0.0,2.25
 419 -2.7,0.0,1.8
 420 -2.7,-0.3,1.8
 421 -3.0,-0.3,1.8
 422 -3.0,0.0,1.8
 423 -1.5,0.3,2.25
 424 -1.6,0.3,2.025
 425 -2.5,0.3,2.25
 426 -2.3,0.3,2.025
 427 -3.0,0.3,2.25
 428 -2.7,0.3,2.025
 429 -3.0,0.3,1.8
 430 -2.7,0.3,1.8
 431 -2.7,0.0,1.575
 432 -2.7,-0.3,1.575
 433 -3.0,-0.3,1.35
 434 -3.0,0.0,1.35
 435 -2.5,0.0,1.125
 436 -2.5,-0.3,1.125
 437 -2.65,-0.3,0.9375
 438 -2.65,0.0,0.9375
 439 -2.0,-0.3,0.9
 440 -1.9,-0.3,0.6
 441 -1.9,0.0,0.6
 442 -3.0,0.3,1.35
 443 -2.7,0.3,1.575
 444 -2.65,0.3,0.9375
 445 -2.5,0.3,1.125
 446 -1.9,0.3,0.6
 447 -2.0,0.3,0.9
 448 1.7,0.0,1.425
 449 1.7,-0.66,1.425
 450 1.7,-0.66,0.6
 451 1.7,0.0,0.6
 452 2.6,0.0,1.425
 453 2.6,-0.66,1.425
 454 3.1,-0.66,0.825
 455 3.1,0.0,0.825
 456 2.3,0.0,2.1
 457 2.3,-0.25,2.1
 458 2.4,-0.25,2.025
 459 2.4,0.0,2.025
 460 2.7,0.0,2.4
 461 2.7,-0.25,2.4
 462 3.3,-0.25,2.4
 463 3.3,0.0,2.4
 464 1.7,0.66,0.6
 465 1.7,0.66,1.425
 466 3.1,0.66,0.825
 467 2.6,0.66,1.425
 468 2.4,0.25,2.025
 469 2.3,0.25,2.1
 470 3.3,0.25,2.4
 471 2.7,0.25,2.4
 472 2.8,0.0,2.475
 473 2.8,-0.25,2.475
 474 3.525,-0.25,2.49375
 475 3.525,0.0,2.49375
 476 2.9,0.0,2.475
 477 2.9,-0.15,2.475
 478 3.45,-0.15,2.5125
 479 3.45,0.0,2.5125
 480 2.8,0.0,2.4
 481 2.8,-0.15,2.4
 482 3.2,-0.15,2.4
 483 3.2,0.0,2.4
 484 3.525,0.25,2.49375
 485 2.8,0.25,2.475
 486 3.45,0.15,2.5125
 487 2.9,0.15,2.475
 488 3.2,0.15,2.4
 489 2.8,0.15,2.4
 490 0.0,0.0,3.15
 491 0.0,-0.002,3.15
 492 0.002,0.0,3.15
 493 0.8,0.0,3.15
 494 0.8,-0.45,3.15
 495 0.45,-0.8,3.15
 496 0.0,-0.8,3.15
 497 0.0,0.0,2.85
 498 0.2,0.0,2.7
 499 0.2,-0.112,2.7
 500 0.112,-0.2,2.7
 501 0.0,-0.2,2.7
 502 -0.002,0.0,3.15
 503 -0.45,-0.8,3.15
 504 -0.8,-0.45,3.15
 505 -0.8,0.0,3.15
 506 -0.112,-0.2,2.7
 507 -0.2,-0.112,2.7
 508 -0.2,0.0,2.7
 509 0.0,0.002,3.15
 510 -0.8,0.45,3.15
 511 -0.45,0.8,3.15
 512 0.0,0.8,3.15
 513 -0.2,0.112,2.7
 514 -0.112,0.2,2.7
 515 0.0,0.2,2.7
 516 0.45,0.8,3.15
 517 0.8,0.45,3.15
 518 0.112,0.2,2.7
 519 0.2,0.112,2.7
 520 0.4,0.0,2.55
 521 0.4,-0.224,2.55
 522 0.224,-0.4,2.55
 523 0.0,-0.4,2.55
 524 1.3,0.0,2.55
 525 1.3,-0.728,2.55
 526 0.728,-1.3,2.55
 527 0.0,-1.3,2.55
 528 1.3,0.0,2.4
 529 1.3,-0.728,2.4
 530 0.728,-1.3,2.4
 531 0.0,-1.3,2.4
 532 -0.224,-0.4,2.55
 533 -0.4,-0.224,2.55
 534 -0.4,0.0,2.55
 535 -0.728,-1.3,2.55
 536 -1.3,-0.728,2.55
 537 -1.3,0.0,2.55
 538 -0.728,-1.3,2.4
 539 -1.3,-0.728,2.4
 540 -1.3,0.0,2.4
 541 -0.4,0.224,2.55
 542 -0.224,0.4,2.55
 543 0.0,0.4,2.55
 544 -1.3,0.728,2.55
 545 -0.728,1.3,2.55
 546 0.0,1.3,2.55
 547 -1.3,0.728,2.4
 548 -0.728,1.3,2.4
 549 0.0,1.3,2.4
 550 0.224,0.4,2.55
 551 0.4,0.224,2.55
 552 0.728,1.3,2.55
 553 1.3,0.728,2.55
 554 0.728,1.3,2.4
 555 1.3,0.728,2.4
 556 0.0,0.0,0.0
 557 1.5,0.0,0.15
 558 1.5,0.84,0.15
 559 0.84,1.5,0.15
 560 0.0,1.5,0.15
 561 1.5,0.0,0.075
 562 1.5,0.84,0.075
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 593 """
 594
 595 teaspoon = """16
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