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Frank 2022-05-18 23:56:23 +02:00
parent cb9459f176
commit 3ee10482ab
721 changed files with 34873 additions and 33558 deletions
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src/main/java/org/betterx/bclib/noise/OpenSimplexNoise.java Normal file
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src/main/java/org/betterx/bclib/noise/VoronoiNoise.java Normal file
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package org.betterx.bclib.noise;
import net.minecraft.core.BlockPos;
import org.betterx.bclib.util.MHelper;
import java.util.Random;
public class VoronoiNoise {
private static final Random RANDOM = new Random();
final int seed;
public VoronoiNoise() {
this(0);
}
public VoronoiNoise(int seed) {
this.seed = seed;
}
private int getSeed(int x, int y, int z) {
int h = seed + x * 374761393 + y * 668265263 + z;
h = (h ^ (h >> 13)) * 1274126177;
return h ^ (h >> 16);
}
public double sample(double x, double y, double z) {
int ix = MHelper.floor(x);
int iy = MHelper.floor(y);
int iz = MHelper.floor(z);
float px = (float) (x - ix);
float py = (float) (y - iy);
float pz = (float) (z - iz);
float d = 10;
for (int pox = -1; pox < 2; pox++) {
for (int poy = -1; poy < 2; poy++) {
for (int poz = -1; poz < 2; poz++) {
RANDOM.setSeed(getSeed(pox + ix, poy + iy, poz + iz));
float pointX = pox + RANDOM.nextFloat();
float pointY = poy + RANDOM.nextFloat();
float pointZ = poz + RANDOM.nextFloat();
float d2 = MHelper.lengthSqr(pointX - px, pointY - py, pointZ - pz);
if (d2 < d) {
d = d2;
}
}
}
}
return Math.sqrt(d);
}
public Random getRandom(double x, double y, double z) {
int ix = MHelper.floor(x);
int iy = MHelper.floor(y);
int iz = MHelper.floor(z);
float px = (float) (x - ix);
float py = (float) (y - iy);
float pz = (float) (z - iz);
float d = 10;
int posX = 0;
int posY = 0;
int posZ = 0;
for (int pox = -1; pox < 2; pox++) {
for (int poy = -1; poy < 2; poy++) {
for (int poz = -1; poz < 2; poz++) {
RANDOM.setSeed(getSeed(pox + ix, poy + iy, poz + iz));
float pointX = pox + RANDOM.nextFloat();
float pointY = poy + RANDOM.nextFloat();
float pointZ = poz + RANDOM.nextFloat();
float d2 = MHelper.lengthSqr(pointX - px, pointY - py, pointZ - pz);
if (d2 < d) {
d = d2;
posX = pox;
posY = poy;
posZ = poz;
}
}
}
}
posX += ix;
posY += iy;
posZ += iz;
int seed = MHelper.getSeed(posY, posX, posZ);
RANDOM.setSeed(seed);
return RANDOM;
}
public BlockPos[] getPos(double x, double y, double z, double scale) {
int ix = MHelper.floor(x);
int iy = MHelper.floor(y);
int iz = MHelper.floor(z);
float px = (float) (x - ix);
float py = (float) (y - iy);
float pz = (float) (z - iz);
float d = 10;
float selX = 0;
float selY = 0;
float selZ = 0;
float selXPre = 0;
float selYPre = 0;
float selZPre = 0;
for (int pox = -1; pox < 2; pox++) {
for (int poy = -1; poy < 2; poy++) {
for (int poz = -1; poz < 2; poz++) {
RANDOM.setSeed(getSeed(pox + ix, poy + iy, poz + iz));
float pointX = pox + RANDOM.nextFloat();
float pointY = poy + RANDOM.nextFloat();
float pointZ = poz + RANDOM.nextFloat();
float d2 = MHelper.lengthSqr(pointX - px, pointY - py, pointZ - pz);
if (d2 < d) {
d = d2;
selXPre = selX;
selYPre = selY;
selZPre = selZ;
selX = pointX;
selY = pointY;
selZ = pointZ;
}
}
}
}
BlockPos p1 = new BlockPos(
(ix + (double) selX) * scale,
(iy + (double) selY) * scale,
(iz + (double) selZ) * scale
);
BlockPos p2 = new BlockPos(
(ix + (double) selXPre) * scale,
(iy + (double) selYPre) * scale,
(iz + (double) selZPre) * scale
);
return new BlockPos[]{p1, p2};
}
}