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clean up noise eqs
This commit is contained in:
dfsek
parent
ce62f1d7ac
commit
bd4812ef2b
@ -0,0 +1,29 @@
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package com.dfsek.terra.api.math.noise.samplers;
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public class ConstantSampler implements NoiseSampler {
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private final double constant;
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public ConstantSampler(double constant) {
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this.constant = constant;
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}
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@Override
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public double getNoise(double x, double y) {
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return constant;
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}
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@Override
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public double getNoise(double x, double y, double z) {
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return constant;
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}
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@Override
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public double getNoiseSeeded(int seed, double x, double y) {
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return constant;
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}
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@Override
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public double getNoiseSeeded(int seed, double x, double y, double z) {
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return constant;
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}
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}
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@ -0,0 +1,70 @@
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package com.dfsek.terra.api.math.noise.samplers;
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import com.dfsek.terra.api.math.noise.NoiseFunction2;
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import com.dfsek.terra.api.math.noise.NoiseFunction3;
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import com.dfsek.terra.api.math.parsii.RandomFunction;
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import com.dfsek.terra.generation.config.NoiseBuilder;
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import parsii.eval.Expression;
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import parsii.eval.Parser;
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import parsii.eval.Scope;
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import parsii.eval.Variable;
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import parsii.tokenizer.ParseException;
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import java.util.Map;
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/**
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* Sampler implementation using parsii expression
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*/
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public class ExpressionSampler implements NoiseSampler {
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private final Expression expression;
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private final Variable x;
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private final Variable y;
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private final Variable z;
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public ExpressionSampler(String equation, Scope parent, long seed, Map<String, NoiseBuilder> functions) throws ParseException {
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Parser parser = new Parser();
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Scope scope = new Scope().withParent(parent);
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this.x = scope.create("x");
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this.y = scope.create("y");
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this.z = scope.create("z");
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functions.forEach((id, noise) -> {
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switch(noise.getDimensions()) {
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case 2:
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parser.registerFunction(id, new NoiseFunction2(seed, noise));
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break;
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case 3:
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parser.registerFunction(id, new NoiseFunction3(seed, noise));
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break;
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}
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});
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parser.registerFunction("rand", new RandomFunction());
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this.expression = parser.parse(equation, scope);
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}
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@Override
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public synchronized double getNoise(double x, double y) {
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return getNoise(x, 0, y);
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}
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@Override
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public synchronized double getNoise(double x, double y, double z) {
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this.x.setValue(x);
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this.y.setValue(y);
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this.z.setValue(z);
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return expression.evaluate();
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}
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@Override
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public double getNoiseSeeded(int seed, double x, double y) {
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return getNoise(x, y);
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}
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@Override
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public double getNoiseSeeded(int seed, double x, double y, double z) {
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return getNoise(x, y, z);
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}
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}
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@ -1,9 +1,13 @@
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package com.dfsek.terra.config.builder;
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import com.dfsek.terra.api.math.noise.samplers.ConstantSampler;
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import com.dfsek.terra.api.math.noise.samplers.ExpressionSampler;
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import com.dfsek.terra.api.math.noise.samplers.NoiseSampler;
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import com.dfsek.terra.biome.palette.PaletteHolder;
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import com.dfsek.terra.generation.config.NoiseBuilder;
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import com.dfsek.terra.generation.config.WorldGenerator;
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import parsii.eval.Scope;
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import parsii.tokenizer.ParseException;
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import java.util.Collections;
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import java.util.HashMap;
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@ -44,7 +48,17 @@ public class GeneratorBuilder {
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public WorldGenerator build(long seed) {
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synchronized(gens) {
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return gens.computeIfAbsent(seed, k -> new WorldGenerator(seed, noiseEquation, elevationEquation, varScope, noiseBuilderMap, palettes, slantPalettes, noise2d, base, biomeNoise.build((int) seed), elevationWeight, blendDistance, blendStep, blendWeight));
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return gens.computeIfAbsent(seed, k -> {
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NoiseSampler noise;
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NoiseSampler elevation;
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try {
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noise = new ExpressionSampler(noiseEquation, varScope, seed, noiseBuilderMap);
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elevation = elevationEquation == null ? new ConstantSampler(0) : new ExpressionSampler(elevationEquation, varScope, seed, noiseBuilderMap);
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} catch(ParseException e) {
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throw new RuntimeException(e);
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}
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return new WorldGenerator(palettes, slantPalettes, noise, elevation, noise2d, base, biomeNoise.build((int) seed), elevationWeight, blendDistance, blendStep, blendWeight);
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});
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}
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}
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@ -1,20 +1,10 @@
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package com.dfsek.terra.generation.config;
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import com.dfsek.terra.api.math.noise.NoiseFunction2;
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import com.dfsek.terra.api.math.noise.NoiseFunction3;
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import com.dfsek.terra.api.math.noise.samplers.NoiseSampler;
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import com.dfsek.terra.api.math.parsii.RandomFunction;
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import com.dfsek.terra.api.platform.block.BlockData;
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import com.dfsek.terra.api.world.biome.Generator;
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import com.dfsek.terra.api.world.palette.Palette;
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import com.dfsek.terra.biome.palette.PaletteHolder;
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import parsii.eval.Expression;
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import parsii.eval.Parser;
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import parsii.eval.Scope;
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import parsii.eval.Variable;
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import parsii.tokenizer.ParseException;
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import java.util.Map;
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public class WorldGenerator implements Generator {
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@SuppressWarnings({"unchecked", "rawtypes", "RedundantSuppression"})
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@ -22,13 +12,9 @@ public class WorldGenerator implements Generator {
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@SuppressWarnings({"unchecked", "rawtypes", "RedundantSuppression"})
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private final PaletteHolder slantPalettes;
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private final Expression noiseExp;
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private final Expression elevationExp;
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private final Variable xVar;
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private final Variable yVar;
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private final Variable zVar;
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private final Variable elevationXVar;
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private final Variable elevationZVar;
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private final NoiseSampler noise;
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private final NoiseSampler elevation;
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private final boolean noise2d;
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private final double base;
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private final NoiseSampler biomeNoise;
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@ -37,9 +23,11 @@ public class WorldGenerator implements Generator {
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private final int blendStep;
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private final double blendWeight;
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public WorldGenerator(long seed, String equation, String elevateEquation, Scope vScope, Map<String, NoiseBuilder> noiseBuilders, PaletteHolder palettes, PaletteHolder slantPalettes, boolean noise2d, double base, NoiseSampler biomeNoise, double elevationWeight, int blendDistance, int blendStep, double blendWeight) {
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public WorldGenerator(PaletteHolder palettes, PaletteHolder slantPalettes, NoiseSampler noise, NoiseSampler elevation, boolean noise2d, double base, NoiseSampler biomeNoise, double elevationWeight, int blendDistance, int blendStep, double blendWeight) {
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this.palettes = palettes;
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this.slantPalettes = slantPalettes;
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this.noise = noise;
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this.elevation = elevation;
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this.noise2d = noise2d;
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this.base = base;
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@ -48,55 +36,11 @@ public class WorldGenerator implements Generator {
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this.blendDistance = blendDistance;
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this.blendStep = blendStep;
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this.blendWeight = blendWeight;
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Parser p = new Parser();
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p.registerFunction("rand", new RandomFunction());
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Parser ep = new Parser();
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ep.registerFunction("rand", new RandomFunction());
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Scope s = new Scope().withParent(vScope);
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xVar = s.create("x");
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if(!noise2d) yVar = s.create("y");
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else yVar = null;
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zVar = s.create("z");
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s.create("seed").setValue(seed);
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for(Map.Entry<String, NoiseBuilder> e : noiseBuilders.entrySet()) {
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switch(e.getValue().getDimensions()) {
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case 2:
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p.registerFunction(e.getKey(), new NoiseFunction2(seed, e.getValue()));
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ep.registerFunction(e.getKey(), new NoiseFunction2(seed, e.getValue()));
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break;
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case 3:
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p.registerFunction(e.getKey(), new NoiseFunction3(seed, e.getValue()));
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break;
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}
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}
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try {
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this.noiseExp = p.parse(equation, s).simplify();
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if(elevateEquation != null) {
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Scope es = new Scope().withParent(vScope);
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es.create("seed").setValue(seed);
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this.elevationXVar = es.create("x");
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this.elevationZVar = es.create("z");
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this.elevationExp = ep.parse(elevateEquation, es).simplify();
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} else {
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this.elevationExp = null;
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this.elevationXVar = null;
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this.elevationZVar = null;
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}
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} catch(ParseException e) {
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throw new IllegalArgumentException();
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}
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}
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@Override
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public synchronized double getElevation(int x, int z) {
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if(elevationExp == null) return 0;
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elevationXVar.setValue(x);
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elevationZVar.setValue(z);
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return elevationExp.evaluate();
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return elevation.getNoise(x, z);
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}
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@Override
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@ -111,10 +55,7 @@ public class WorldGenerator implements Generator {
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@Override
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public synchronized double getNoise(double x, double y, double z) {
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xVar.setValue(x);
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if(!noise2d) yVar.setValue(y);
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zVar.setValue(z);
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return noiseExp.evaluate();
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return noise.getNoise(x, y, z);
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}
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/**
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@ -2,16 +2,16 @@ package com.dfsek.terra.generation.math;
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import com.dfsek.terra.api.platform.world.World;
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import com.dfsek.terra.biome.BiomeProvider;
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import com.dfsek.terra.generation.math.interpolation.ChunkInterpolator;
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import com.dfsek.terra.generation.math.interpolation.BiomeChunkInterpolator;
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import com.dfsek.terra.generation.math.interpolation.ElevationInterpolator;
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import net.jafama.FastMath;
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public class Sampler {
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private final ChunkInterpolator interpolator;
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private final BiomeChunkInterpolator interpolator;
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private final ElevationInterpolator elevationInterpolator;
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public Sampler(int x, int z, BiomeProvider provider, World world, int elevationSmooth) {
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this.interpolator = new ChunkInterpolator(world, x, z, provider);
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this.interpolator = new BiomeChunkInterpolator(world, x, z, provider);
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this.elevationInterpolator = new ElevationInterpolator(world, x, z, provider, elevationSmooth);
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}
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@ -0,0 +1,107 @@
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package com.dfsek.terra.generation.math.interpolation;
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import com.dfsek.terra.api.platform.world.World;
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import com.dfsek.terra.api.util.mutable.MutableInteger;
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import com.dfsek.terra.api.world.biome.Generator;
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import com.dfsek.terra.biome.BiomeProvider;
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import net.jafama.FastMath;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Class to abstract away the Interpolators needed to generate a chunk.<br>
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* Contains method to get interpolated noise at a coordinate within the chunk.
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*/
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public class BiomeChunkInterpolator implements ChunkInterpolator {
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private final Interpolator3[][][] interpGrid = new Interpolator3[4][64][4];
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/**
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* Instantiates a 3D BiomeChunkInterpolator at a pair of chunk coordinates.
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*
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* @param chunkX X coordinate of the chunk.
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* @param chunkZ Z coordinate of the chunk.
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* @param provider Biome Provider to use for biome fetching.
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*/
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public BiomeChunkInterpolator(World w, int chunkX, int chunkZ, BiomeProvider provider) {
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int xOrigin = chunkX << 4;
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int zOrigin = chunkZ << 4;
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double[][][] noiseStorage = new double[5][5][65];
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for(int x = 0; x < 5; x++) {
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for(int z = 0; z < 5; z++) {
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Generator generator = provider.getBiome(xOrigin + (x << 2), zOrigin + (z << 2)).getGenerator(w);
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Map<Generator, MutableInteger> genMap = new HashMap<>();
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int step = generator.getBlendStep();
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int blend = generator.getBlendDistance();
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for(int xi = -blend; xi <= blend; xi++) {
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for(int zi = -blend; zi <= blend; zi++) {
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genMap.computeIfAbsent(provider.getBiome(xOrigin + (x << 2) + (xi * step), zOrigin + (z << 2) + (zi * step)).getGenerator(w), g -> new MutableInteger(0)).increment(); // Increment by 1
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}
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}
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for(int y = 0; y < 65; y++) {
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noiseStorage[x][z][y] = computeNoise(genMap, (x << 2) + xOrigin, y << 2, (z << 2) + zOrigin);
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}
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}
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}
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for(byte x = 0; x < 4; x++) {
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for(byte z = 0; z < 4; z++) {
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for(int y = 0; y < 64; y++) {
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interpGrid[x][y][z] = new Interpolator3(
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noiseStorage[x][z][y],
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noiseStorage[x + 1][z][y],
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noiseStorage[x][z][y + 1],
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noiseStorage[x + 1][z][y + 1],
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noiseStorage[x][z + 1][y],
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noiseStorage[x + 1][z + 1][y],
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noiseStorage[x][z + 1][y + 1],
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noiseStorage[x + 1][z + 1][y + 1]);
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}
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}
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}
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}
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private static double computeNoise(Map<Generator, MutableInteger> gens, double x, double y, double z) {
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double n = 0;
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double div = 0;
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for(Map.Entry<Generator, MutableInteger> entry : gens.entrySet()) {
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Generator gen = entry.getKey();
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int weight = entry.getValue().get();
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double noise = computeNoise(gen, x, y, z);
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n += noise * weight;
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div += gen.getWeight() * weight;
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}
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return n / div;
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}
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private static double computeNoise(Generator generator, double x, double y, double z) {
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if(generator.is2d()) return generator.getNoise(x, 0, z) + noise2dExtrude(y, generator.get2dBase());
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else return generator.getNoise(x, y, z);
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}
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private static int reRange(int value, int high) {
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return FastMath.max(FastMath.min(value, high), 0);
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}
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private static double noise2dExtrude(double y, double base) {
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return ((-FastMath.pow2((y / base))) + 1);
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}
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/**
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* Gets the noise at a pair of internal chunk coordinates.
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*
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* @param x The internal X coordinate (0-15).
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* @param z The internal Z coordinate (0-15).
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* @return double - The interpolated noise at the coordinates.
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*/
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@Override
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public double getNoise(double x, double y, double z) {
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return interpGrid[reRange(((int) x) / 4, 3)][reRange(((int) y) / 4, 63)][reRange(((int) z) / 4, 3)].trilerp((x % 4) / 4, (y % 4) / 4, (z % 4) / 4);
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}
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}
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@ -1,102 +1,6 @@
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package com.dfsek.terra.generation.math.interpolation;
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import com.dfsek.terra.api.platform.world.World;
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import com.dfsek.terra.api.util.mutable.MutableInteger;
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import com.dfsek.terra.api.world.biome.Generator;
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import com.dfsek.terra.biome.BiomeProvider;
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import net.jafama.FastMath;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Class to abstract away the Interpolators needed to generate a chunk.<br>
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* Contains method to get interpolated noise at a coordinate within the chunk.
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*/
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public class ChunkInterpolator {
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private final Interpolator3[][][] interpGrid = new Interpolator3[4][64][4];
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/**
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* Instantiates a 3D ChunkInterpolator at a pair of chunk coordinates.
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*
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* @param chunkX X coordinate of the chunk.
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* @param chunkZ Z coordinate of the chunk.
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* @param provider Biome Provider to use for biome fetching.
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*/
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public ChunkInterpolator(World w, int chunkX, int chunkZ, BiomeProvider provider) {
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int xOrigin = chunkX << 4;
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int zOrigin = chunkZ << 4;
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double[][][] noiseStorage = new double[5][5][65];
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for(int x = 0; x < 5; x++) {
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for(int z = 0; z < 5; z++) {
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Generator generator = provider.getBiome(xOrigin + (x << 2), zOrigin + (z << 2)).getGenerator(w);
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Map<Generator, MutableInteger> genMap = new HashMap<>();
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int step = generator.getBlendStep();
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int blend = generator.getBlendDistance();
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for(int xi = -blend; xi <= blend; xi++) {
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for(int zi = -blend; zi <= blend; zi++) {
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genMap.computeIfAbsent(provider.getBiome(xOrigin + (x << 2) + (xi * step), zOrigin + (z << 2) + (zi * step)).getGenerator(w), g -> new MutableInteger(0)).increment(); // Increment by 1
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}
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}
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for(int y = 0; y < 65; y++) {
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noiseStorage[x][z][y] = computeNoise(genMap, (x << 2) + xOrigin, y << 2, (z << 2) + zOrigin);
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}
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}
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}
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for(byte x = 0; x < 4; x++) {
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for(byte z = 0; z < 4; z++) {
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for(int y = 0; y < 64; y++) {
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interpGrid[x][y][z] = new Interpolator3(
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biomeAvg(x, y, z, noiseStorage),
|
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biomeAvg(x + 1, y, z, noiseStorage),
|
||||
biomeAvg(x, y + 1, z, noiseStorage),
|
||||
biomeAvg(x + 1, y + 1, z, noiseStorage),
|
||||
biomeAvg(x, y, z + 1, noiseStorage),
|
||||
biomeAvg(x + 1, y, z + 1, noiseStorage),
|
||||
biomeAvg(x, y + 1, z + 1, noiseStorage),
|
||||
biomeAvg(x + 1, y + 1, z + 1, noiseStorage));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static double computeNoise(Map<Generator, MutableInteger> gens, double x, double y, double z) {
|
||||
double n = 0;
|
||||
double div = 0;
|
||||
for(Map.Entry<Generator, MutableInteger> entry : gens.entrySet()) {
|
||||
Generator gen = entry.getKey();
|
||||
int weight = entry.getValue().get();
|
||||
double noise = computeNoise(gen, x, y, z);
|
||||
|
||||
n += noise * weight;
|
||||
div += gen.getWeight() * weight;
|
||||
}
|
||||
return n / div;
|
||||
}
|
||||
|
||||
private static double computeNoise(Generator generator, double x, double y, double z) {
|
||||
if(generator.is2d()) return generator.getNoise(x, 0, z) + noise2dExtrude(y, generator.get2dBase());
|
||||
else return generator.getNoise(x, y, z);
|
||||
}
|
||||
|
||||
private static int reRange(int value, int high) {
|
||||
return FastMath.max(FastMath.min(value, high), 0);
|
||||
}
|
||||
|
||||
private static double noise2dExtrude(double y, double base) {
|
||||
return ((-FastMath.pow2((y / base))) + 1);
|
||||
}
|
||||
|
||||
private double biomeAvg(int x, int y, int z, double[][][] noise) {
|
||||
return noise[x][z][y];
|
||||
}
|
||||
|
||||
public interface ChunkInterpolator {
|
||||
/**
|
||||
* Gets the noise at a pair of internal chunk coordinates.
|
||||
*
|
||||
@ -104,7 +8,5 @@ public class ChunkInterpolator {
|
||||
* @param z The internal Z coordinate (0-15).
|
||||
* @return double - The interpolated noise at the coordinates.
|
||||
*/
|
||||
public double getNoise(double x, double y, double z) {
|
||||
return interpGrid[reRange(((int) x) / 4, 3)][reRange(((int) y) / 4, 63)][reRange(((int) z) / 4, 3)].trilerp((x % 4) / 4, (y % 4) / 4, (z % 4) / 4);
|
||||
}
|
||||
double getNoise(double x, double y, double z);
|
||||
}
|
||||
|
||||
@ -0,0 +1,48 @@
|
||||
package com.dfsek.terra.generation.math.interpolation;
|
||||
|
||||
import com.dfsek.terra.api.math.noise.samplers.NoiseSampler;
|
||||
import net.jafama.FastMath;
|
||||
|
||||
public class NoiseChunkInterpolator implements ChunkInterpolator {
|
||||
private final Interpolator3[][][] interpGrid = new Interpolator3[4][64][4];
|
||||
|
||||
public NoiseChunkInterpolator(int chunkX, int chunkZ, NoiseSampler noise) {
|
||||
int xOrigin = chunkX << 4;
|
||||
int zOrigin = chunkZ << 4;
|
||||
|
||||
double[][][] noiseStorage = new double[5][5][65];
|
||||
|
||||
for(int x = 0; x < 5; x++) {
|
||||
for(int z = 0; z < 5; z++) {
|
||||
for(int y = 0; y < 65; y++) {
|
||||
noiseStorage[x][z][y] = noise.getNoise((x << 2) + xOrigin, y << 2, (z << 2) + zOrigin);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for(byte x = 0; x < 4; x++) {
|
||||
for(byte z = 0; z < 4; z++) {
|
||||
for(int y = 0; y < 64; y++) {
|
||||
interpGrid[x][y][z] = new Interpolator3(
|
||||
noiseStorage[x][z][y],
|
||||
noiseStorage[x + 1][z][y],
|
||||
noiseStorage[x][z][y + 1],
|
||||
noiseStorage[x + 1][z][y + 1],
|
||||
noiseStorage[x][z + 1][y],
|
||||
noiseStorage[x + 1][z + 1][y],
|
||||
noiseStorage[x][z + 1][y + 1],
|
||||
noiseStorage[x + 1][z + 1][y + 1]);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static int reRange(int value, int high) {
|
||||
return FastMath.max(FastMath.min(value, high), 0);
|
||||
}
|
||||
|
||||
@Override
|
||||
public double getNoise(double x, double y, double z) {
|
||||
return interpGrid[reRange(((int) x) / 4, 3)][reRange(((int) y) / 4, 63)][reRange(((int) z) / 4, 3)].trilerp((x % 4) / 4, (y % 4) / 4, (z % 4) / 4);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,26 @@
|
||||
package com.dfsek.terra.population.items.carving;
|
||||
|
||||
import com.dfsek.terra.api.math.Range;
|
||||
import com.dfsek.terra.api.math.noise.samplers.NoiseSampler;
|
||||
import com.dfsek.terra.api.platform.world.ChunkAccess;
|
||||
import com.dfsek.terra.carving.Carver;
|
||||
import com.dfsek.terra.generation.math.interpolation.NoiseChunkInterpolator;
|
||||
|
||||
public class NoiseCarver implements Carver {
|
||||
private final NoiseSampler noise;
|
||||
private final Range range;
|
||||
|
||||
public NoiseCarver(NoiseSampler noise, Range range) {
|
||||
this.noise = noise;
|
||||
this.range = range;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void carve(int chunkX, int chunkZ, ChunkAccess chunk) {
|
||||
NoiseChunkInterpolator chunkInterpolator = new NoiseChunkInterpolator(chunkX, chunkZ, noise);
|
||||
|
||||
for(int y : range) {
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user