MinecraftMods/BetterEnd
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

SDF islands

Browse source
This commit is contained in:
paulevsGitch 2020-12-28 11:21:32 +03:00
parent 71cae4850c
commit 559a1b8d81
4 changed files with 197 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

106
src/main/java/ru/betterend/noise/VoronoiNoise.java
View file

@ -2,19 +2,19 @@ package ru.betterend.noise;
import java.util.Random;
import net.minecraft.util.math.MathHelper;
import net.minecraft.util.math.BlockPos;
import ru.betterend.util.MHelper;
public class VoronoiNoise {
private static final Random RANDOM = new Random();
final int seed;
final double scale;
final double separation;
public VoronoiNoise() {
this(0);
}
public VoronoiNoise(int seed, double side, double separation) {
public VoronoiNoise(int seed) {
this.seed = seed;
this.scale = 1.0 / side;
this.separation = MathHelper.clamp(separation, 0, 1);
}
private int getSeed(int x, int y, int z) {
@ -22,38 +22,76 @@ public class VoronoiNoise {
h = (h ^ (h >> 13)) * 1274126177;
return h ^ (h >> 16);
}
public double sample(float x, float y, float z) {
return sample(MHelper.floor(x), MHelper.floor(y), MHelper.floor(z));
}
public double sample(int x, int y, int z) {
double posX = x * scale;
double posY = y * scale;
double posZ = z * scale;
int posXI = MHelper.floor(posX);
int posYI = MHelper.floor(posY);
int posZI = MHelper.floor(posZ);
double distance = Double.MAX_VALUE;
for (int px = -1; px < 2; px++) {
double pointX = posXI + px;
for (int py = -1; py < 2; py++) {
double pointY = posYI + py;
for (int pz = -1; pz < 2; pz++) {
double pointZ = posZI + pz;
RANDOM.setSeed(getSeed(posXI + px, posYI + py, posZI + pz));
double posXN = pointX + RANDOM.nextDouble() * separation;
double posYN = pointY + RANDOM.nextDouble() * separation;
double posZN = pointZ + RANDOM.nextDouble() * separation;
double dist2 = MHelper.lengthSqr(posXN - posX, posYN - posY, posZN - posZ);
if (dist2 < distance) {
distance = dist2;
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 distance;
return Math.sqrt(d);
}
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};
}
}