122 lines
3.1 KiB
C++
122 lines
3.1 KiB
C++
#include "stdafx.h"
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#include "net.minecraft.world.level.newbiome.layer.h"
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#include "System.h"
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VoronoiZoom::VoronoiZoom(int64_t seedMixup, shared_ptr<Layer>parent) : Layer(seedMixup)
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{
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this->parent = parent;
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}
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intArray VoronoiZoom::getArea(int xo, int yo, int w, int h)
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{
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xo -= 2;
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yo -= 2;
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int bits = 2;
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int ss = 1 << bits;
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int px = xo >> bits;
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int py = yo >> bits;
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int pw = (w >> bits) + 3;
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int ph = (h >> bits) + 3;
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intArray p = parent->getArea(px, py, pw, ph);
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int ww = pw << bits;
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int hh = ph << bits;
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intArray tmp = IntCache::allocate(ww * hh);
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for (int y = 0; y < ph - 1; y++)
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{
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int ul = p[(0 + 0) + (y + 0) * pw];
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int dl = p[(0 + 0) + (y + 1) * pw];
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for (int x = 0; x < pw - 1; x++)
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{
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double s = ss * 0.9;
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initRandom((x + px) << bits, (y + py) << bits);
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double x0 = (nextRandom(1024) / 1024.0 - 0.5) * s;
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double y0 = (nextRandom(1024) / 1024.0 - 0.5) * s;
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initRandom((x + px + 1) << bits, (y + py) << bits);
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double x1 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
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double y1 = (nextRandom(1024) / 1024.0 - 0.5) * s;
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initRandom((x + px) << bits, (y + py + 1) << bits);
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double x2 = (nextRandom(1024) / 1024.0 - 0.5) * s;
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double y2 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
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initRandom((x + px + 1) << bits, (y + py + 1) << bits);
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double x3 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
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double y3 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
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int ur = p[(x + 1) + (y + 0) * pw];
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int dr = p[(x + 1) + (y + 1) * pw];
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for (int yy = 0; yy < ss; yy++)
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{
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int pp = ((y << bits) + yy) * ww + ((x << bits));
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for (int xx = 0; xx < ss; xx++)
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{
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double d0 = ((yy - y0) * (yy - y0) + (xx - x0) * (xx - x0));
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double d1 = ((yy - y1) * (yy - y1) + (xx - x1) * (xx - x1));
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double d2 = ((yy - y2) * (yy - y2) + (xx - x2) * (xx - x2));
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double d3 = ((yy - y3) * (yy - y3) + (xx - x3) * (xx - x3));
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if (d0 < d1 && d0 < d2 && d0 < d3)
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{
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tmp[pp++] = ul;
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}
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else if (d1 < d0 && d1 < d2 && d1 < d3)
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{
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tmp[pp++] = ur;
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}
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else if (d2 < d0 && d2 < d1 && d2 < d3)
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{
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tmp[pp++] = dl;
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}
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else
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{
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tmp[pp++] = dr;
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}
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}
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}
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ul = ur;
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dl = dr;
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}
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}
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intArray result = IntCache::allocate(w * h);
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for (int y = 0; y < h; y++)
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{
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System::arraycopy(tmp, (y + (yo & (ss - 1))) * (pw << bits) + (xo & (ss - 1)), &result, y * w, w);
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}
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return result;
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}
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int VoronoiZoom::random(int a, int b)
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{
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return nextRandom(2) == 0 ? a : b;
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}
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int VoronoiZoom::random(int a, int b, int c, int d)
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{
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if (b == c && c == d) return b;
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if (a == b && a == c) return a;
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if (a == b && a == d) return a;
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if (a == c && a == d) return a;
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if (a == b && c != d) return a;
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if (a == c && b != d) return a;
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if (a == d && b != c) return a;
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if (b == a && c != d) return b;
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if (b == c && a != d) return b;
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if (b == d && a != c) return b;
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if (c == a && b != d) return c;
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if (c == b && a != d) return c;
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if (c == d && a != b) return c;
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if (d == a && b != c) return c;
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if (d == b && a != c) return c;
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if (d == c && a != b) return c;
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int s = nextRandom(4);
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if (s == 0) return a;
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if (s == 1) return b;
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if (s == 2) return c;
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return d;
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} |