add_mesh_extra_objects/add_mesh_teapot.py

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