1 | /* |
1 | /* |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2010,2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
4 | * Copyright (©) 2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 | * |
5 | * |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
7 | * the terms of the Affero GNU General Public License as published by the |
7 | * the terms of the Affero GNU General Public License as published by the |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
9 | * option) any later version. |
9 | * option) any later version. |
10 | * |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
14 | * GNU General Public License for more details. |
15 | * |
15 | * |
16 | * You should have received a copy of the Affero GNU General Public License |
16 | * You should have received a copy of the Affero GNU General Public License |
17 | * and the GNU General Public License along with this program. If not, see |
17 | * and the GNU General Public License along with this program. If not, see |
18 | * <http://www.gnu.org/licenses/>. |
18 | * <http://www.gnu.org/licenses/>. |
19 | * |
19 | * |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
21 | */ |
21 | */ |
22 | |
22 | |
23 | #include "noise.h" |
23 | #include "noise.h" |
24 | |
24 | |
… | |
… | |
267 | vec2d I = floor (P); |
267 | vec2d I = floor (P); |
268 | vec2d F = P - I; |
268 | vec2d F = P - I; |
269 | |
269 | |
270 | value_t v = 0; |
270 | value_t v = 0; |
271 | |
271 | |
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272 | seed *= 3039177861; |
272 | uint8_t i1 = uint8_t (I[1]) ^ (seed >> 16); |
273 | uint8_t i1 = uint8_t (I[1]) + (seed >> 16); |
273 | uint8_t i0 = uint8_t (I[0]) ^ (seed >> 8); |
274 | uint8_t i0 = uint8_t (I[0]) + (seed >> 8); |
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275 | |
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276 | uint8_t h2 = rvmap[2](seed); |
274 | |
277 | |
275 | for (int j = -1; j <= 2; ++j) |
278 | for (int j = -1; j <= 2; ++j) |
276 | { |
279 | { |
277 | uint8_t h1 = rvmap[1](i1 + j) ^ seed; |
280 | uint8_t h1 = rvmap[1](i1 + j) ^ h2; |
278 | |
281 | |
279 | for (int i = -1; i <= 2; ++i) |
282 | for (int i = -1; i <= 2; ++i) |
280 | { |
283 | { |
281 | vec2d A = F - vec2d (i, j); |
284 | vec2d A = F - vec2d (i, j); |
282 | value_t d = dot (A, A); |
285 | value_t d = dot (A, A); |
… | |
… | |
307 | noise_gen_base<vec3d>::operator() (vec3d P, uint32_t seed) |
310 | noise_gen_base<vec3d>::operator() (vec3d P, uint32_t seed) |
308 | { |
311 | { |
309 | vec3d I = floor (P); |
312 | vec3d I = floor (P); |
310 | vec3d F = P - I; |
313 | vec3d F = P - I; |
311 | |
314 | |
|
|
315 | seed *= 3039177861; |
312 | uint8_t i2 = uint8_t (I[2]) ^ (seed >> 24); |
316 | uint8_t i2 = uint8_t (I[2]) + (seed >> 24); |
313 | uint8_t i1 = uint8_t (I[1]) ^ (seed >> 16); |
317 | uint8_t i1 = uint8_t (I[1]) + (seed >> 16); |
314 | uint8_t i0 = uint8_t (I[0]) ^ (seed >> 8); |
318 | uint8_t i0 = uint8_t (I[0]) + (seed >> 8); |
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|
319 | |
|
|
320 | uint8_t h3 = rvmap[3](seed); |
315 | |
321 | |
316 | value_t v = 0; |
322 | value_t v = 0; |
317 | |
323 | |
318 | for (int k = -1; k <= 2; ++k) |
324 | for (int k = -1; k <= 2; ++k) |
319 | { |
325 | { |
320 | uint8_t h2 = rvmap[2](i2 + k) ^ seed; |
326 | uint8_t h2 = rvmap[2](i2 + k) ^ h3; |
321 | |
327 | |
322 | for (int j = -1; j <= 2; ++j) |
328 | for (int j = -1; j <= 2; ++j) |
323 | { |
329 | { |
324 | uint8_t h1 = rvmap[1](i1 + j) ^ h2; |
330 | uint8_t h1 = rvmap[1](i1 + j) ^ h2; |
325 | |
331 | |
… | |
… | |
353 | noise_gen<vec3d>::operator() (vec3d P, vec3d N, uint32_t seed) |
359 | noise_gen<vec3d>::operator() (vec3d P, vec3d N, uint32_t seed) |
354 | { |
360 | { |
355 | vec3d I = floor (P); |
361 | vec3d I = floor (P); |
356 | vec3d F = P - I; |
362 | vec3d F = P - I; |
357 | |
363 | |
|
|
364 | seed *= 3039177861; |
358 | uint8_t i2 = uint8_t (I[2]) ^ (seed >> 24); |
365 | uint8_t i2 = uint8_t (I[2]) + (seed >> 24); |
359 | uint8_t i1 = uint8_t (I[1]) ^ (seed >> 16); |
366 | uint8_t i1 = uint8_t (I[1]) + (seed >> 16); |
360 | uint8_t i0 = uint8_t (I[0]) ^ (seed >> 8); |
367 | uint8_t i0 = uint8_t (I[0]) + (seed >> 8); |
|
|
368 | |
|
|
369 | uint8_t h3 = rvmap[3](seed); |
361 | |
370 | |
362 | value_t v = 0; |
371 | value_t v = 0; |
363 | |
372 | |
364 | for (int k = -1; k <= 2; ++k) |
373 | for (int k = -1; k <= 2; ++k) |
365 | { |
374 | { |
366 | uint8_t h2 = rvmap[2](i2 + k) ^ seed; |
375 | uint8_t h2 = rvmap[2](i2 + k) ^ h3; |
367 | |
376 | |
368 | for (int j = -1; j <= 2; ++j) |
377 | for (int j = -1; j <= 2; ++j) |
369 | { |
378 | { |
370 | uint8_t h1 = rvmap[1](i1 + j) ^ h2; |
379 | uint8_t h1 = rvmap[1](i1 + j) ^ h2; |
371 | |
380 | |
… | |
… | |
601 | } |
610 | } |
602 | |
611 | |
603 | template class frac_gen<vec2d>; |
612 | template class frac_gen<vec2d>; |
604 | template class frac_gen<vec3d>; |
613 | template class frac_gen<vec3d>; |
605 | |
614 | |
606 | ///////////////////////////////////////////////////////////////////////////// |
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|
607 | |
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|
608 | void noise_test (); |
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609 | void noise_test () |
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610 | { |
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|
611 | frac2d gen; |
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|
612 | |
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|
613 | frac2d vec_gen1 (4, 2, 0.5, 1); |
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|
614 | frac2d vec_gen2 (4, 2, 0.5, 2); |
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615 | |
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|
616 | #if 1 |
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|
617 | int N = 1024; |
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|
618 | |
|
|
619 | printf ("P6 %d %d 255\n", N, N); |
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|
620 | // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm |
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621 | for (int y = 0; y < N; ++y) |
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622 | { |
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623 | if (!(y&63))fprintf (stderr, "y %d\n", y);//D |
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624 | for (int x = 0; x < N; ++x) |
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|
625 | { |
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626 | vec2d P = vec2d (x, y) * (25000.f / N); |
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627 | |
|
|
628 | //putc (127 * gen.noise (vec2d (x * 0.01, y * 0.01)) + 128, stdout); |
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|
629 | //putc (256 * gen.terrain2 (x * 0.004, y * 0.004, 8), stdout); |
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|
630 | //putc (256 * gen.fBm (vec2d(x * 0.01, y * 0.01), 16), stdout); |
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|
631 | //putc (256 * gen.turbulence (vec2d (x * 0.004 - 1, y * 0.004 - 1), 10), stdout); |
|
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632 | //putc (256 * gen.heterofractal (vec2d (x * 0.008, y * 0.008), 8, 0.9), stdout); |
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|
633 | |
|
|
634 | // mountais or somesuch(?) |
|
|
635 | //putc (256 * gen.hybridfractal (vec2d (x * 0.01, y * 0.01), 8, -.4, -4), stdout); |
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|
636 | |
|
|
637 | // temperature |
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|
638 | //putc (256 * gen.fBm (vec2d (x * 0.002, y * 0.002), 2), stdout); |
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|
639 | // rain |
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|
640 | |
|
|
641 | float continent; |
|
|
642 | |
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|
643 | { |
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|
644 | const float continent_scale = 0.00008; |
|
|
645 | |
|
|
646 | vec2d perturb ( |
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647 | vec_gen1.fBm (P * 0.0004), |
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648 | vec_gen2.fBm (P * 0.0004) |
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649 | ); |
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|
650 | |
|
|
651 | const float W = 1000 * continent_scale; |
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|
652 | const float N = (25000 - 1) * continent_scale; |
|
|
653 | |
|
|
654 | static frac2d perturb_gen (4, 2, 0.5, 3); |
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|
655 | float perturb_perturb = gen.fBm (P * 0.0004); |
|
|
656 | perturb_perturb = perturb_perturb * perturb_perturb * 0.004; |
|
|
657 | |
|
|
658 | vec2d P_perturb = P * continent_scale + perturb * min (W, gen.noise (P * perturb_perturb) * W * 8); |
|
|
659 | |
|
|
660 | static frac2d continent_gen (13, 2.13, 0.5); |
|
|
661 | continent = continent_gen.fBm (P_perturb) + 0.05f; |
|
|
662 | |
|
|
663 | float border = W; // within n places of the border |
|
|
664 | |
|
|
665 | min_it (border, P_perturb [0]); |
|
|
666 | min_it (border, N - P_perturb [0]); |
|
|
667 | min_it (border, P_perturb [1]); |
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|
668 | min_it (border, N - P_perturb [1]); |
|
|
669 | |
|
|
670 | continent = blend (-1.f, continent, border, 0.f, W); |
|
|
671 | } |
|
|
672 | |
|
|
673 | vec3d c (1, 1, 1); |
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|
674 | float v; |
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675 | |
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|
676 | if (continent < 0) |
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677 | { |
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678 | // ocean |
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679 | |
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680 | v = min (continent * 10, -0.2f); |
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681 | c = vec3d (0, 0, 1); |
|
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682 | } |
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683 | else |
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684 | { |
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|
685 | // continent |
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|
686 | |
|
|
687 | // big rivers |
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|
688 | static frac2d river_gen (2); |
|
|
689 | float river1 = river_gen.fBm (P * 0.0004);// - (P[0] / 25000) * 0.18 + 0.06; |
|
|
690 | float river2 = river_gen.ridgedmultifractal (P * 0.04 + vec2d (3, 5), 0.8, 10) - (P[1] / 25000) * 0.1; |
|
|
691 | |
|
|
692 | if (river1 > 0.05f) |
|
|
693 | { |
|
|
694 | v = -0.1f; |
|
|
695 | c = vec3d (0.4, 0.4, 1); |
|
|
696 | } |
|
|
697 | else if (river1 > 0.08f && river2 > 0.1f) |
|
|
698 | { |
|
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699 | v = -0.05f; |
|
|
700 | c = vec3d (0.4, 0.4, 1); |
|
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701 | } |
|
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702 | else |
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|
703 | { |
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|
704 | river1 -= 0.07f; |
|
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705 | |
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706 | //c = river1 > 0 ? vec3d (0.8, 0.8, 0) : vec3d (0.8, 0, 0); |
|
|
707 | c = blend0 (vec3d (0.8, 0, 0), vec3d (0.8, 0.8, 0), river1, 0.01f);; |
|
|
708 | |
|
|
709 | static frac2d mountain_gen (8, 2.14, 0.5); |
|
|
710 | float mountain = mountain_gen.ridgedmultifractal (P * 0.004); |
|
|
711 | v = blend0 (mountain * 3 - 1, continent, river1, 0.05f); |
|
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712 | } |
|
|
713 | |
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714 | v=abs(river1) < 0.1; |
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715 | c=vec3d(1,1,1); |
|
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716 | } |
|
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717 | |
|
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718 | c *= v * 0.5 + 0.5; |
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719 | |
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720 | putc (clamp<int> (255 * c[0], 0, 255), stdout); |
|
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721 | putc (clamp<int> (255 * c[1], 0, 255), stdout); |
|
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722 | putc (clamp<int> (255 * c[2], 0, 255), stdout); |
|
|
723 | |
|
|
724 | //cells |
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725 | //putc (127.49 * gen.billowfractal (vec2d (x * 0.01, y * 0.01), 9) + 128, stdout); |
|
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726 | } |
|
|
727 | } |
|
|
728 | #else |
|
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729 | int N = 128; |
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730 | |
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731 | //printf ("P6 %d %d 255\n", N, N); |
|
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732 | // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm |
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733 | frac3d gen3 (3);; |
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734 | for (int z = 0; z < N; ++z) |
|
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735 | { |
|
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736 | if (!(z&7))fprintf (stderr, "z %d\n", z);//D |
|
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737 | for (int y = 0; y < N; ++y) |
|
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738 | for (int x = 0; x < N; ++x) |
|
|
739 | { |
|
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740 | float v = gen3.ridgedmultifractal (vec3d (x * 0.001 + 0.2, y * 0.001 + 0.2, z * 0.01 + 0.2), 1.03, 2) * 2; |
|
|
741 | |
|
|
742 | #if 0 |
|
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743 | if (z < 64) |
|
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744 | v = v * (z * z) / (64 * 64); |
|
|
745 | #endif |
|
|
746 | |
|
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747 | if (v <= 0.9) |
|
|
748 | continue; |
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749 | |
|
|
750 | float r[4]; |
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751 | int i[4]; |
|
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752 | |
|
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753 | r[0] = x; |
|
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754 | r[1] = y; |
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755 | r[2] = z; |
|
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756 | r[3] = v; |
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757 | |
|
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758 | memcpy (i, r, 16); |
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|
759 | |
|
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760 | i[0] = htonl (i[0]); |
|
|
761 | i[1] = htonl (i[1]); |
|
|
762 | i[2] = htonl (i[2]); |
|
|
763 | i[3] = htonl (i[3]); |
|
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764 | |
|
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765 | fwrite (i, 4*4, 1, stdout); |
|
|
766 | } |
|
|
767 | } |
|
|
768 | #endif |
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769 | |
|
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770 | exit (0); |
|
|
771 | } |
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