… | |
… | |
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 | |
|
|
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); |
|
|
275 | |
|
|
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); |
|
|
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 | |
… | |
… | |
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 | ///////////////////////////////////////////////////////////////////////////// |
615 | ///////////////////////////////////////////////////////////////////////////// |
607 | |
616 | |
|
|
617 | template<typename T, typename U> |
|
|
618 | T |
|
|
619 | inline border_blend (T a, T b, vec2d P, U N, U W) |
|
|
620 | { |
|
|
621 | U border = W; // within n places of the border |
|
|
622 | |
|
|
623 | min_it (border, P [0]); |
|
|
624 | min_it (border, N - P [0]); |
|
|
625 | min_it (border, P [1]); |
|
|
626 | min_it (border, N - P [1]); |
|
|
627 | |
|
|
628 | return blend (a, b,border, U(0), W); |
|
|
629 | } |
|
|
630 | |
|
|
631 | static void |
|
|
632 | gen_height (int x, int y) |
|
|
633 | { |
|
|
634 | vec2d P = vec2d (x, y); |
|
|
635 | |
|
|
636 | static frac2d gen(13); |
|
|
637 | |
|
|
638 | static frac2d vec_gen1 (6, 2, 0.5, 1); |
|
|
639 | static frac2d vec_gen2 (6, 2, 0.5, 2); |
|
|
640 | |
|
|
641 | const float continent_scale = 0.00008; |
|
|
642 | |
|
|
643 | vec2d perturb_pos = pow (P, 1.4) * 1e-5; |
|
|
644 | |
|
|
645 | vec2d perturb ( |
|
|
646 | vec_gen1.fBm (perturb_pos), |
|
|
647 | vec_gen2.fBm (perturb_pos) |
|
|
648 | ); |
|
|
649 | |
|
|
650 | float perturb_perturb = 1 - (P[1] - P[0]) * (1. / 25000 / 2); |
|
|
651 | perturb_perturb = perturb_perturb * perturb_perturb * 0.4; |
|
|
652 | perturb *= perturb_perturb; |
|
|
653 | |
|
|
654 | vec2d P_continent = P * continent_scale + perturb; |
|
|
655 | |
|
|
656 | static frac2d continent_gen (13, 2.13, 0.5); |
|
|
657 | float continent = continent_gen.fBm (P_continent) + 0.05f; |
|
|
658 | |
|
|
659 | float land_gradient = sigmoid1 (P[0] * (1. / 25000)); |
|
|
660 | |
|
|
661 | const float W = 1000 * continent_scale; |
|
|
662 | const float N = (25000 - 1) * continent_scale; |
|
|
663 | |
|
|
664 | continent = border_blend (-1.f, continent, P_continent , N, 400 * continent_scale); |
|
|
665 | continent = border_blend (-1.f, continent, P * continent_scale + perturb * 0.1, N, 100 * continent_scale); |
|
|
666 | |
|
|
667 | vec3d c; |
|
|
668 | float v; |
|
|
669 | |
|
|
670 | if (continent < 0) |
|
|
671 | { |
|
|
672 | // ocean |
|
|
673 | |
|
|
674 | v = min (continent * 10, -0.2f); |
|
|
675 | c = vec3d (0, 0, 1); |
|
|
676 | } |
|
|
677 | else |
|
|
678 | { |
|
|
679 | // continent |
|
|
680 | |
|
|
681 | // big rivers |
|
|
682 | static frac2d river_gen (1); |
|
|
683 | float river1 = abs (river_gen.fBm (P * 0.001 + perturb * 4)); |
|
|
684 | float river2 = river_gen.ridgedmultifractal (P * 0.04 + vec2d (3, 5), 0.8, 10) - (P[1] / 25000) * 0.1; |
|
|
685 | |
|
|
686 | if (river1 < 0.03f) |
|
|
687 | { |
|
|
688 | v = min (-0.1f, -river1); |
|
|
689 | c = vec3d (0.2, 0.2, 1); |
|
|
690 | } |
|
|
691 | else if (river1 < 0.2f && river2 > 0.1f) |
|
|
692 | { |
|
|
693 | v = -0.05f; |
|
|
694 | c = vec3d (0.4, 0.4, 1); |
|
|
695 | } |
|
|
696 | else |
|
|
697 | { |
|
|
698 | //c = river1 > 0 ? vec3d (0.8, 0.8, 0) : vec3d (0.8, 0, 0); |
|
|
699 | c = blend0 (vec3d (0.8, 0, 0), vec3d (0.8, 0.8, 0), 0.01f, river1); |
|
|
700 | |
|
|
701 | static frac2d mountain_gen (8, 2.14, 0.5); |
|
|
702 | float mountain = mountain_gen.ridgedmultifractal (P * 0.004); |
|
|
703 | v = blend0 (mountain * 3 - 1, continent, 0.05f, river1); |
|
|
704 | } |
|
|
705 | } |
|
|
706 | |
|
|
707 | c *= v * 0.5 + 0.5; |
|
|
708 | |
|
|
709 | putc (clamp<int> (255 * c[0], 0, 255), stdout); |
|
|
710 | putc (clamp<int> (255 * c[1], 0, 255), stdout); |
|
|
711 | putc (clamp<int> (255 * c[2], 0, 255), stdout); |
|
|
712 | } |
|
|
713 | |
608 | void noise_test (); |
714 | void noise_test (); |
609 | void noise_test () |
715 | void noise_test () |
610 | { |
716 | { |
611 | frac2d gen; |
|
|
612 | |
|
|
613 | frac2d vec_gen1 (4, 2, 0.5, 1); |
|
|
614 | frac2d vec_gen2 (4, 2, 0.5, 2); |
|
|
615 | |
|
|
616 | #if 1 |
717 | #if 1 |
617 | int N = 1024; |
718 | int Nw = 700; |
618 | |
719 | |
619 | printf ("P6 %d %d 255\n", N, N); |
720 | printf ("P6 %d %d 255\n", Nw * 3, Nw * 2); |
620 | // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm |
721 | // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm |
621 | for (int y = 0; y < N; ++y) |
722 | for (int y = 0; y < Nw; ++y) |
622 | { |
723 | { |
623 | if (!(y&63))fprintf (stderr, "y %d\n", y);//D |
724 | if (!(y&63))fprintf (stderr, "y %d\n", y * 50 / Nw);//D |
|
|
725 | |
|
|
726 | for (int x = 0; x < Nw; ++x) gen_height (x * 25000 / Nw, y * 25000 / Nw); |
|
|
727 | |
|
|
728 | for (int x = 0; x < Nw; ++x) gen_height (x, y); |
|
|
729 | for (int x = 0; x < Nw; ++x) gen_height (x + 22000, y + 2000); |
|
|
730 | } |
624 | for (int x = 0; x < N; ++x) |
731 | for (int y = 0; y < Nw; ++y) |
625 | { |
732 | { |
626 | vec2d P = vec2d (x, y) * (25000.f / N); |
733 | if (!(y&63))fprintf (stderr, "y %d\n", y * 50 / Nw+50);//D |
627 | |
734 | |
|
|
735 | for (int x = 0; x < Nw; ++x) gen_height (x + 1000, y + 22000); |
|
|
736 | for (int x = 0; x < Nw; ++x) gen_height (x + 12000, y + 12000); |
|
|
737 | for (int x = 0; x < Nw; ++x) gen_height (x + 22000, y + 22000); |
|
|
738 | } |
|
|
739 | |
628 | //putc (127 * gen.noise (vec2d (x * 0.01, y * 0.01)) + 128, stdout); |
740 | //putc (127 * gen.noise (vec2d (x * 0.01, y * 0.01)) + 128, stdout); |
629 | //putc (256 * gen.terrain2 (x * 0.004, y * 0.004, 8), stdout); |
741 | //putc (256 * gen.terrain2 (x * 0.004, y * 0.004, 8), stdout); |
630 | //putc (256 * gen.fBm (vec2d(x * 0.01, y * 0.01), 16), stdout); |
742 | //putc (256 * gen.fBm (vec2d(x * 0.01, y * 0.01), 16), stdout); |
631 | //putc (256 * gen.turbulence (vec2d (x * 0.004 - 1, y * 0.004 - 1), 10), stdout); |
743 | //putc (256 * gen.turbulence (vec2d (x * 0.004 - 1, y * 0.004 - 1), 10), stdout); |
632 | //putc (256 * gen.heterofractal (vec2d (x * 0.008, y * 0.008), 8, 0.9), stdout); |
744 | //putc (256 * gen.heterofractal (vec2d (x * 0.008, y * 0.008), 8, 0.9), stdout); |
633 | |
|
|
634 | // mountais or somesuch(?) |
|
|
635 | //putc (256 * gen.hybridfractal (vec2d (x * 0.01, y * 0.01), 8, -.4, -4), stdout); |
745 | //putc (256 * gen.hybridfractal (vec2d (x * 0.01, y * 0.01), 8, -.4, -4), stdout); |
636 | |
|
|
637 | // temperature |
|
|
638 | //putc (256 * gen.fBm (vec2d (x * 0.002, y * 0.002), 2), stdout); |
746 | //putc (256 * gen.fBm (vec2d (x * 0.002, y * 0.002), 2), stdout); |
639 | // rain |
|
|
640 | |
|
|
641 | float continent; |
|
|
642 | |
|
|
643 | { |
|
|
644 | const float continent_scale = 0.00008; |
|
|
645 | |
|
|
646 | vec2d perturb ( |
|
|
647 | vec_gen1.fBm (P * 0.0004), |
|
|
648 | vec_gen2.fBm (P * 0.0004) |
|
|
649 | ); |
|
|
650 | |
|
|
651 | const float W = 1000 * continent_scale; |
|
|
652 | const float N = (25000 - 1) * continent_scale; |
|
|
653 | |
|
|
654 | static frac2d perturb_gen (4, 2, 0.5, 3); |
|
|
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]); |
|
|
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); |
|
|
674 | float v; |
|
|
675 | |
|
|
676 | if (continent < 0) |
|
|
677 | { |
|
|
678 | // ocean |
|
|
679 | |
|
|
680 | v = min (continent * 10, -0.2f); |
|
|
681 | c = vec3d (0, 0, 1); |
|
|
682 | } |
|
|
683 | else |
|
|
684 | { |
|
|
685 | // continent |
|
|
686 | |
|
|
687 | // big rivers |
|
|
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 | { |
|
|
699 | v = -0.05f; |
|
|
700 | c = vec3d (0.4, 0.4, 1); |
|
|
701 | } |
|
|
702 | else |
|
|
703 | { |
|
|
704 | river1 -= 0.07f; |
|
|
705 | |
|
|
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); |
|
|
712 | } |
|
|
713 | |
|
|
714 | v=abs(river1) < 0.1; |
|
|
715 | c=vec3d(1,1,1); |
|
|
716 | } |
|
|
717 | |
|
|
718 | c *= v * 0.5 + 0.5; |
|
|
719 | |
|
|
720 | putc (clamp<int> (255 * c[0], 0, 255), stdout); |
|
|
721 | putc (clamp<int> (255 * c[1], 0, 255), stdout); |
|
|
722 | putc (clamp<int> (255 * c[2], 0, 255), stdout); |
|
|
723 | |
|
|
724 | //cells |
|
|
725 | //putc (127.49 * gen.billowfractal (vec2d (x * 0.01, y * 0.01), 9) + 128, stdout); |
747 | //putc (127.49 * gen.billowfractal (vec2d (x * 0.01, y * 0.01), 9) + 128, stdout); |
726 | } |
|
|
727 | } |
|
|
728 | #else |
748 | #else |
729 | int N = 128; |
749 | int N = 128; |
730 | |
750 | |
731 | //printf ("P6 %d %d 255\n", N, N); |
751 | //printf ("P6 %d %d 255\n", N, N); |
732 | // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm |
752 | // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm |