Cuberite Forum
Random Chitchat 2012-2016 - Printable Version

+- Cuberite Forum (https://forum.cuberite.org)
+-- Forum: Off Topic (https://forum.cuberite.org/forum-9.html)
+--- Forum: Off Topic Discussion (https://forum.cuberite.org/forum-10.html)
+--- Thread: Random Chitchat 2012-2016 (/thread-434.html)

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487

RE: What we're doing - FakeTruth - 01-30-2014

Finally managed to render the bulb in full HDBig Grin
So how about some Mandelbulby Minecraft terrain?Tongue

[Image: 6181_1391026470.jpg] [Image: 5421_1391026526.jpg]

RE: What we're doing - SamJBarney - 01-30-2014

That would be crazy awesome Smile

RE: What we're doing - xoft - 01-30-2014

A hat tip to you if you can pull that one off Smile
But mandelbulbs are rather small objects, they don't go to infinity, like MC terrain, right? You'll need to use something a little bit different, so that it maps to the entire world.
I would be interested to know even what the mandelbulb would look like in MC, as a normal object. Maybe make a Lua script with the mandelbulb calculation for a 256x256x256 cube, store the results in a file and then use MCS to load that file and "print" it into the world.

RE: What we're doing - FakeTruth - 01-30-2014

Unfortunately Mandelbulbs aren't interesting at all until you zoom in, so a 256x256x256 area will look more like a sphere than display the characteristics of a Mandelbulb. On that note here's an overview of the whole thing
[Image: 9626_1391028142.jpg]

RE: What we're doing - tigerw - 01-30-2014

It looks like a giant space alien with lots of serrated teeth.

SamJBarney, use those SQL attack vectors that you were looking so hard for to destroy it before it reaches Earth!

RE: What we're doing - xoft - 01-30-2014

I'm thinking that it could actually be possible to "unroll" a mandelbulb so that it covers an entire world. I expect you currently have a way of checking [XYZ] coords, if they are in the set or not. If you map those coords into [ThetaPhi] coords and use those as block XZ coords, together with the radius being the Y block coord, it would map the sphere repeatedly onto the world plane. Since the radius is limited into a single interval, it fits well with MC's limit of Y height. The question is, what it would look like after such unrollingTongue And another question is whether the client would even survive rendering it - it has problems rendering terrain that is too "difficult".
Sethbling was there before us...
http://www.youtube.com/watch?v=X3Esx-jWPv4
http://www.youtube.com/watch?v=gr9pGGQ1WeE

RE: What we're doing - bearbin - 01-30-2014

Sounds cool!

RE: What we're doing - FakeTruth - 01-30-2014

Good luck "unrolling" thisTongue

float gBailout = 10.0f;
__host__ __device__ float DE(const float3& pos) 
{
	float3 zn = pos;
	float hit = 0.0;
	const float p = 8.0;
	float d = 1.0;

	float th = 0.0f;
	float phi = 0.0f;
	float rado = 0.0f;
	float sint = 0.0f;

	// 15
	for( int i = 0; i < 10; i++ )
	{
		float rad = float3len(zn);

		if( rad > 2.0f )
		{	
			hit = 0.5f * logf(rad) * rad / d;
		}else{			
			th = atan2f( float2len(zn.x, zn.y), zn.z );
			phi = atan2f( zn.y, zn.x );		
			rado = powf(rad,8.0);
			d = powf(rad, 7.0f) * 7.0f * d + 1.0f;



			sint = sinf( th * p );
			zn.x = rado * sint * cosf( phi * p );
			zn.y = rado * sint * sinf( phi * p );
			zn.z = rado * cosf( th * p ) ;
			zn = float3add(zn, pos);
		}

	}

	return hit;
}

I actually suspect this function to "roll" it into a sphere anyway, if you increase the power in this function (it's 8 right now) it will repeat itself many times and display a clear pattern. Unrolling the Mandelbulb would simply yield a terrain with "bulbs" all over the place as seen on the Mandelbulb repeated already.

This video keeps changing the power all the time, to give you an impression of what it does to the Mandelbulb http://www.youtube.com/watch?v=z4wy_oc6Y3A

This is what it looks like with a power of 16. As you can see it simply repeats the bulbs more.
[Image: 6156_1391030368.png]

RE: What we're doing - xoft - 01-30-2014

I think we've just discovered a new sport in Minecraft, with Antonio. We're hunting a server crash while regenerating chunks, so in order to vandalize the chunks properly, I installed the Bullet plugin, by STR_Warrior ( https://forum.cuberite.org/showthread.php?tid=1230 ) And suddenly we're shooting "lazors" at each other while flying around in creative mode, trying to trap each other in the diamond blocks. Wife came in and after watching us for a minute, said something about childplay and left again Smile

RE: What we're doing - xoft - 01-30-2014

(01-30-2014, 07:20 AM)FakeTruth Wrote: Good luck "unrolling" thisTongue

th = atan2f( float2len(zn.x, zn.y), zn.z );
phi = atan2f( zn.y, zn.x );		
rado = powf(rad,8.0);
// There ^^^ is your BlockX, BlockZ and BlockY, already unrolled Smile My job is done before it even started Smile