| 1 |
<?xml version="1.0" encoding="UTF-8"?>
|
| 2 |
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
|
| 3 | <X3D profile='Immersive' version='3.3' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.3.xsd'> |
| 4 | <head> |
| 5 | <meta name='title' content=' PixelTextureSnowman.x3d '/> |
| 6 | <meta name='description' content='This snowman example shows a colorful PixelTexture applied to X3D primitive shapes - happy holidays!'/> |
| 7 | <meta name='creator' content='Craig Schwetje, Leonard Daly and Don Brutzman'/> |
| 8 | <meta name='created' content='2 February 2006'/> |
| 9 | <meta name='translated' content='25 August 2008'/> |
| 10 | <meta name='modified' content='22 August 2024'/> |
| 11 | <meta name='Sound' content=' frosty2.mid '/> |
| 12 | <meta name='reference' content='https://en.wikipedia.org/wiki/Snowman'/> |
| 13 | <meta name='Sound' content=' https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/frosty2.mid '/> |
| 14 | <meta name='reference' content=' http://www.the-north-pole.com/carols/frosty.html '/> |
| 15 | <meta name='reference' content='https://X3dGraphics.com'/> |
| 16 | <meta name='reference' content=' https://www.web3d.org/x3d/content/examples/X3dResources.html '/> |
| 17 | <meta name='subject' content='PixelTexture, MIDI, X3D book, X3D graphics, X3D-Edit, http://www.x3dGraphics.com'/> |
| 18 | <meta name='identifier' content=' https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/PixelTextureSnowman.x3d '/> |
| 19 | <meta name='generator' content='X3D-Edit 4.0, https://www.web3d.org/x3d/tools/X3D-Edit'/> |
| 20 | <meta name='license' content='../license.html'/> |
| 21 | </head> |
| 22 | <Scene> |
| 23 | <WorldInfo title='PixelTextureSnowman.x3d'/> |
| 24 | <Background skyColor='1 1 1'/> |
| 25 | <Viewpoint description='PixelTexture Snowman' orientation='1 0 0 -0.17985' position='0 2 11'/> |
| 26 | <Sound location='0 1.6 0' maxBack='50' maxFront='50' minBack='5' minFront='5' priority='1'> |
| 27 | <AudioClip description='Frosty the Snowman' loop='true' url=' "frosty2.mid" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/frosty2.mid" '/> |
| 28 | </Sound> |
| 29 | <Transform translation='0 -2.5 2'> |
| 30 | <Billboard> |
| 31 | <Anchor DEF='WikipediaAnchorLink' description='Wikipedia Snowman entry' parameter='"target=_blank"' url=' "https://en.wikipedia.org/wiki/Snowman" '> |
| 32 | <Shape> |
| 33 | <Text string='"Click here to learn more" "about snowmen"'> |
| 34 | <FontStyle justify='"MIDDLE" "MIDDLE"' size='0.6'/> |
| 35 | </Text> |
| 36 | <Appearance> |
| 37 | <Material DEF='Autumn11' ambientIntensity='0.25641' diffuseColor='1 0.160784 0.764706' shininess='1' specularColor='0.48655 0.319155 0.444036'/> |
| 38 | </Appearance> |
| 39 | </Shape> |
| 40 | <!-- Add transparent geometry over the text to make clicking (i.e. Anchor selection) easier --> |
| 41 | <Shape> |
| 42 | <Box size='6 1.5 0.02'/> |
| 43 | <Appearance> |
| 44 | <Material transparency='1'/> |
| 45 | </Appearance> |
| 46 | </Shape> |
| 47 | </Anchor> |
| 48 | </Billboard> |
| 49 | </Transform> |
| 50 |
<!-- ROUTE information for SnowmanRoot node:
[from TwistInterpolator.value_changed to rotation
]
-->
<Transform DEF='SnowmanRoot'> |
| 51 |
<!-- ROUTE information for TwistInterpolator node:
[from Clock.fraction_changed to set_fraction
]
[from value_changed to SnowmanRoot.rotation
]
-->
<OrientationInterpolator DEF='TwistInterpolator' key='0 0.22 0.25 0.5 0.73 0.75 1' keyValue='0 1 0 0 0 1 0 5.75959 0 1 0 5.75959 0 1 0 0 0 1 0 0.5236 0 1 0 0.5236 0 1 0 0'/> |
| 52 |
<!-- ROUTE information for Clock node:
[from fraction_changed to TwistInterpolator.set_fraction
]
-->
<TimeSensor DEF='Clock' cycleInterval='6' loop='true'/> |
| 53 | < ROUTE fromNode='TwistInterpolator' fromField='value_changed' toNode='SnowmanRoot' toField='rotation'/> |
| 54 | < ROUTE fromNode='Clock' fromField='fraction_changed' toNode='TwistInterpolator' toField='set_fraction'/> |
| 55 | <!-- Hat --> |
| 56 | <Transform translation='0 3.6 0'> |
| 57 | <Shape> |
| 58 | <Appearance> |
| 59 | <Material diffuseColor='0.003922 0.003922 0.003922'/> |
| 60 | </Appearance> |
| 61 | <Cylinder height='1' radius='0.5'/> |
| 62 | </Shape> |
| 63 | </Transform> |
| 64 | <Transform translation='0 3.2 0'> |
| 65 | <Shape> |
| 66 | <Appearance> |
| 67 | <Material diffuseColor='0.003922 0.003922 0.003922'/> |
| 68 | </Appearance> |
| 69 | <Cylinder height='0.2'/> |
| 70 | </Shape> |
| 71 | </Transform> |
| 72 | <!-- Head --> |
| 73 | <Transform translation='0 2.6 0'> |
| 74 | <Shape> |
| 75 | <Appearance> |
| 76 |
<!-- PixelTexture
PixelColors is a DEF node that has 2 USE nodes: USE_1, USE_2 --> <PixelTexture DEF='PixelColors' image='2 4 3 0xff0000 0xffff00 0x007700 0xff0077 0x0000ff 0xff7700 0x00ff77 0x888888' repeatS='false' repeatT='false'/> |
| 77 | </Appearance> |
| 78 | <Sphere radius='.75'/> |
| 79 | </Shape> |
| 80 | </Transform> |
| 81 | <!-- Eyes --> |
| 82 | <Transform translation='0.3 2.7 .55'> |
| 83 | <Shape> |
| 84 | <Appearance> |
| 85 | <Material diffuseColor='0 0 0'/> |
| 86 | </Appearance> |
| 87 | <Sphere radius='.18'/> |
| 88 | </Shape> |
| 89 | </Transform> |
| 90 | <Transform translation='-0.3 2.7 .55'> |
| 91 | <Shape> |
| 92 | <Appearance> |
| 93 | <Material diffuseColor='0 0 0'/> |
| 94 | </Appearance> |
| 95 | <Sphere radius='.18'/> |
| 96 | </Shape> |
| 97 | </Transform> |
| 98 | <!-- Nose --> |
| 99 | <Transform rotation='1 0 0 1.57' translation='0 2.5 0.55'> |
| 100 | <Shape> |
| 101 | <Appearance> |
| 102 | <Material diffuseColor='0.901961 0.403922 0' emissiveColor='1 0.145098 0.058824' specularColor='1 0.454902 0.360784'/> |
| 103 | </Appearance> |
| 104 | <Cone bottomRadius='0.3' height='1.75'/> |
| 105 | </Shape> |
| 106 | </Transform> |
| 107 | <!-- Scarf --> |
| 108 | <Transform translation='0 1.975 0'> |
| 109 | <Shape> |
| 110 | <Appearance> |
| 111 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 112 | </Appearance> |
| 113 | <Cylinder height='0.175' radius='0.8'/> |
| 114 | </Shape> |
| 115 | </Transform> |
| 116 | <Transform translation='.7 1.1 .8'> |
| 117 | <Shape> |
| 118 | <Appearance> |
| 119 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 120 | </Appearance> |
| 121 | <Sphere radius='.1'/> |
| 122 | </Shape> |
| 123 | </Transform> |
| 124 | <Transform translation='.725 1.2 .85'> |
| 125 | <Shape> |
| 126 | <Appearance> |
| 127 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 128 | </Appearance> |
| 129 | <Sphere radius='.1'/> |
| 130 | </Shape> |
| 131 | </Transform> |
| 132 | <Transform translation='.7 1.3 .8'> |
| 133 | <Shape> |
| 134 | <Appearance> |
| 135 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 136 | </Appearance> |
| 137 | <Sphere radius='.1'/> |
| 138 | </Shape> |
| 139 | </Transform> |
| 140 | <Transform translation='.7 1.4 .75'> |
| 141 | <Shape> |
| 142 | <Appearance> |
| 143 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 144 | </Appearance> |
| 145 | <Sphere radius='.1'/> |
| 146 | </Shape> |
| 147 | </Transform> |
| 148 | <Transform translation='.7 1.5 .75'> |
| 149 | <Shape> |
| 150 | <Appearance> |
| 151 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 152 | </Appearance> |
| 153 | <Sphere radius='.1'/> |
| 154 | </Shape> |
| 155 | </Transform> |
| 156 | <Transform translation='.7 1.6 .7'> |
| 157 | <Shape> |
| 158 | <Appearance> |
| 159 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 160 | </Appearance> |
| 161 | <Sphere radius='.1'/> |
| 162 | </Shape> |
| 163 | </Transform> |
| 164 | <Transform translation='.7 1.7 .65'> |
| 165 | <Shape> |
| 166 | <Appearance> |
| 167 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 168 | </Appearance> |
| 169 | <Sphere radius='.1'/> |
| 170 | </Shape> |
| 171 | </Transform> |
| 172 | <Transform translation='.6 1.8 .65'> |
| 173 | <Shape> |
| 174 | <Appearance> |
| 175 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 176 | </Appearance> |
| 177 | <Sphere radius='.1'/> |
| 178 | </Shape> |
| 179 | </Transform> |
| 180 | <Transform translation='.55 1.9 .65'> |
| 181 | <Shape> |
| 182 | <Appearance> |
| 183 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 184 | </Appearance> |
| 185 | <Sphere radius='.1'/> |
| 186 | </Shape> |
| 187 | </Transform> |
| 188 | <Transform translation='.55 2 .65'> |
| 189 | <Shape> |
| 190 | <Appearance> |
| 191 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 192 | </Appearance> |
| 193 | <Sphere radius='.1'/> |
| 194 | </Shape> |
| 195 | </Transform> |
| 196 | <!-- Backside of scarf --> |
| 197 | <Transform translation='-.7 1.1 -.8'> |
| 198 | <Shape> |
| 199 | <Appearance> |
| 200 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 201 | </Appearance> |
| 202 | <Sphere radius='.1'/> |
| 203 | </Shape> |
| 204 | </Transform> |
| 205 | <Transform translation='-.725 1.2 -.85'> |
| 206 | <Shape> |
| 207 | <Appearance> |
| 208 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 209 | </Appearance> |
| 210 | <Sphere radius='.1'/> |
| 211 | </Shape> |
| 212 | </Transform> |
| 213 | <Transform translation='-.7 1.3 -.8'> |
| 214 | <Shape> |
| 215 | <Appearance> |
| 216 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 217 | </Appearance> |
| 218 | <Sphere radius='.1'/> |
| 219 | </Shape> |
| 220 | </Transform> |
| 221 | <Transform translation='-.7 1.4 -.75'> |
| 222 | <Shape> |
| 223 | <Appearance> |
| 224 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 225 | </Appearance> |
| 226 | <Sphere radius='.1'/> |
| 227 | </Shape> |
| 228 | </Transform> |
| 229 | <Transform translation='-.7 1.5 -.75'> |
| 230 | <Shape> |
| 231 | <Appearance> |
| 232 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 233 | </Appearance> |
| 234 | <Sphere radius='.1'/> |
| 235 | </Shape> |
| 236 | </Transform> |
| 237 | <Transform translation='-.7 1.6 -.7'> |
| 238 | <Shape> |
| 239 | <Appearance> |
| 240 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 241 | </Appearance> |
| 242 | <Sphere radius='.1'/> |
| 243 | </Shape> |
| 244 | </Transform> |
| 245 | <Transform translation='-.7 1.7 -.65'> |
| 246 | <Shape> |
| 247 | <Appearance> |
| 248 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 249 | </Appearance> |
| 250 | <Sphere radius='.1'/> |
| 251 | </Shape> |
| 252 | </Transform> |
| 253 | <Transform translation='-.6 1.8 -.65'> |
| 254 | <Shape> |
| 255 | <Appearance> |
| 256 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 257 | </Appearance> |
| 258 | <Sphere radius='.1'/> |
| 259 | </Shape> |
| 260 | </Transform> |
| 261 | <Transform translation='-.55 1.9 -.65'> |
| 262 | <Shape> |
| 263 | <Appearance> |
| 264 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 265 | </Appearance> |
| 266 | <Sphere radius='.1'/> |
| 267 | </Shape> |
| 268 | </Transform> |
| 269 | <Transform translation='-.55 2 -.65'> |
| 270 | <Shape> |
| 271 | <Appearance> |
| 272 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 273 | </Appearance> |
| 274 | <Sphere radius='.1'/> |
| 275 | </Shape> |
| 276 | </Transform> |
| 277 | <!-- Mouth --> |
| 278 | <!-- Middle Mouthpiece --> |
| 279 | <Transform translation='0 2.2 .55'> |
| 280 | <Shape> |
| 281 | <Appearance> |
| 282 | <Material diffuseColor='0 0 0'/> |
| 283 | </Appearance> |
| 284 | <Sphere radius='.1'/> |
| 285 | </Shape> |
| 286 | </Transform> |
| 287 | <Transform translation='0.1 2.2 .55'> |
| 288 | <Shape> |
| 289 | <Appearance> |
| 290 | <Material diffuseColor='0 0 0'/> |
| 291 | </Appearance> |
| 292 | <Sphere radius='.1'/> |
| 293 | </Shape> |
| 294 | </Transform> |
| 295 | <Transform translation='0.2 2.2 .55'> |
| 296 | <Shape> |
| 297 | <Appearance> |
| 298 | <Material diffuseColor='0 0 0'/> |
| 299 | </Appearance> |
| 300 | <Sphere radius='.1'/> |
| 301 | </Shape> |
| 302 | </Transform> |
| 303 | <Transform translation='-0.1 2.2 .55'> |
| 304 | <Shape> |
| 305 | <Appearance> |
| 306 | <Material diffuseColor='0 0 0'/> |
| 307 | </Appearance> |
| 308 | <Sphere radius='.1'/> |
| 309 | </Shape> |
| 310 | </Transform> |
| 311 | <Transform translation='-0.2 2.2 .55'> |
| 312 | <Shape> |
| 313 | <Appearance> |
| 314 | <Material diffuseColor='0 0 0'/> |
| 315 | </Appearance> |
| 316 | <Sphere radius='.1'/> |
| 317 | </Shape> |
| 318 | </Transform> |
| 319 | <!-- Pipe --> |
| 320 | <Transform rotation='0.96225 0.19245 -0.19245 1.57' translation='0.1 2.2 0.55'> |
| 321 | <Shape> |
| 322 | <Appearance> |
| 323 | <Material diffuseColor='0.219608 0.137255 0'/> |
| 324 | </Appearance> |
| 325 | <Cylinder radius='0.03'/> |
| 326 | </Shape> |
| 327 | </Transform> |
| 328 | <Transform translation='.45 2.3 1.5'> |
| 329 | <Shape> |
| 330 | <Appearance> |
| 331 | <Material diffuseColor='0.219608 0.137255 0'/> |
| 332 | </Appearance> |
| 333 | <Cylinder height='.2' radius='.1'/> |
| 334 | </Shape> |
| 335 | </Transform> |
| 336 | <!-- Body --> |
| 337 | <Transform translation='0 1.15 0'> |
| 338 | <Shape> |
| 339 | <Appearance> |
| 340 | <PixelTexture USE='PixelColors'/> |
| 341 | </Appearance> |
| 342 | <Sphere radius='1.1'/> |
| 343 | </Shape> |
| 344 | </Transform> |
| 345 | <!-- Arms --> |
| 346 | <Transform rotation='0 0 1 1.57' translation='0 1.5 0'> |
| 347 | <Shape> |
| 348 | <Appearance> |
| 349 | <Material diffuseColor='.5 .25 .05'/> |
| 350 | </Appearance> |
| 351 | <Cylinder height='4.9' radius='0.1'/> |
| 352 | </Shape> |
| 353 | </Transform> |
| 354 | <Transform rotation='0 0.92848 0.37139 1.57' translation='2 1.5 0'> |
| 355 | <Shape> |
| 356 | <Appearance> |
| 357 | <Material diffuseColor='.5 .25 .05'/> |
| 358 | </Appearance> |
| 359 | <Cylinder height='.9' radius='0.05'/> |
| 360 | </Shape> |
| 361 | </Transform> |
| 362 | <Transform rotation='0.84515 -0.50709 0.16903 1.57' translation='1.5 1.5 0'> |
| 363 | <Shape> |
| 364 | <Appearance> |
| 365 | <Material diffuseColor='.5 .25 .05'/> |
| 366 | </Appearance> |
| 367 | <Cylinder height='.7' radius='0.03'/> |
| 368 | </Shape> |
| 369 | </Transform> |
| 370 | <Transform rotation='0 0.64018 0.76822 1.57' translation='-1 1.5 0'> |
| 371 | <Shape> |
| 372 | <Appearance> |
| 373 | <Material diffuseColor='.5 .25 .05'/> |
| 374 | </Appearance> |
| 375 | <Cylinder height='1' radius='0.05'/> |
| 376 | </Shape> |
| 377 | </Transform> |
| 378 | <Transform rotation='0 0.70711 -0.70711 1' translation='-1.9 1.5 0'> |
| 379 | <Shape> |
| 380 | <Appearance> |
| 381 | <Material diffuseColor='.5 .25 .05'/> |
| 382 | </Appearance> |
| 383 | <Cylinder height='.5' radius='0.04'/> |
| 384 | </Shape> |
| 385 | </Transform> |
| 386 | <!-- Left Glove --> |
| 387 | <Transform rotation='0 0 1 1.57' translation='2.45 1.5 0'> |
| 388 | <Shape> |
| 389 | <Appearance> |
| 390 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 391 | </Appearance> |
| 392 | <Box size='0.5 0.5 0.25'/> |
| 393 | </Shape> |
| 394 | </Transform> |
| 395 | <Transform rotation='0.95285 0 0.30345 1.57' translation='2.75 1.5 0.05'> |
| 396 | <Shape> |
| 397 | <Appearance> |
| 398 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 399 | </Appearance> |
| 400 | <Cylinder height='.25' radius='0.25'/> |
| 401 | </Shape> |
| 402 | </Transform> |
| 403 | <Transform rotation='0.96352 0 0.26764 1.57' translation='2.55 1.85 0'> |
| 404 | <Shape> |
| 405 | <Appearance> |
| 406 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 407 | </Appearance> |
| 408 | <Cylinder height='.15' radius='0.15'/> |
| 409 | </Shape> |
| 410 | </Transform> |
| 411 | <!-- Right Glove --> |
| 412 | <Transform rotation='0 0 1 1.57' translation='-2.45 1.5 0'> |
| 413 | <Shape> |
| 414 | <Appearance> |
| 415 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 416 | </Appearance> |
| 417 | <Box size='0.5 0.5 0.25'/> |
| 418 | </Shape> |
| 419 | </Transform> |
| 420 | <Transform rotation='-0.95285 0 0.30345 1.57' translation='-2.75 1.5 0.05'> |
| 421 | <Shape> |
| 422 | <Appearance> |
| 423 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 424 | </Appearance> |
| 425 | <Cylinder height='.25' radius='0.25'/> |
| 426 | </Shape> |
| 427 | </Transform> |
| 428 | <Transform rotation='-0.96352 0 0.26764 1.57' translation='-2.55 1.85 0'> |
| 429 | <Shape> |
| 430 | <Appearance> |
| 431 | <Material diffuseColor='1 0.039216 0.243137'/> |
| 432 | </Appearance> |
| 433 | <Cylinder height='.15' radius='0.15'/> |
| 434 | </Shape> |
| 435 | </Transform> |
| 436 | <!-- Buttons --> |
| 437 | <Transform translation='0 1.7 .95'> |
| 438 | <Shape> |
| 439 | <Appearance> |
| 440 | <Material diffuseColor='0 0 0'/> |
| 441 | </Appearance> |
| 442 | <Sphere radius='.1'/> |
| 443 | </Shape> |
| 444 | </Transform> |
| 445 | <Transform translation='0 1.25 1.05'> |
| 446 | <Shape> |
| 447 | <Appearance> |
| 448 | <Material diffuseColor='0 0 0'/> |
| 449 | </Appearance> |
| 450 | <Sphere radius='.1'/> |
| 451 | </Shape> |
| 452 | </Transform> |
| 453 | <Transform translation='0 .8 1.05'> |
| 454 | <Shape> |
| 455 | <Appearance> |
| 456 | <Material diffuseColor='0 0 0'/> |
| 457 | </Appearance> |
| 458 | <Sphere radius='.1'/> |
| 459 | </Shape> |
| 460 | </Transform> |
| 461 | <!-- Lower Body --> |
| 462 | <Transform translation='0 -1 0'> |
| 463 | <Shape> |
| 464 | <Appearance> |
| 465 | <PixelTexture USE='PixelColors'/> |
| 466 | </Appearance> |
| 467 | <Sphere radius='1.75'/> |
| 468 | </Shape> |
| 469 | </Transform> |
| 470 | </Transform> |
| 471 | </Scene> |
| 472 | </X3D> |
Event Graph ROUTE Table entries with 2 ROUTE connections total, showing X3D event-model relationships for this scene.
Each row shows an event cascade that may occur during a single timestamp interval between frame renderings, as part of the X3D execution model.
|
Clock
TimeSensor fraction_changed SFFloat |
TwistInterpolator
OrientationInterpolator set_fraction SFFloat |
then
|
TwistInterpolator
OrientationInterpolator value_changed SFRotation |
SnowmanRoot
Transform rotation SFRotation |
|
WikipediaAnchorLink
Anchor |
description='Wikipedia Snowman entry' User-interaction hint for this node. |
<!--
Color-coding legend: X3D terminology
<X3dNode
DEF='idName' field='value'/>
matches XML terminology
<XmlElement
DEF='idName' attribute='value'/>
(Light-blue background: event-based behavior node or statement)
(Grey background inside box: inserted documentation)
(Magenta background: X3D Extensibility)
-->
<!--
For additional help information about X3D scenes, please see X3D Tooltips, X3D Resources, and X3D Scene Authoring Hints.
-->