Add Perlin, ridged multi-fractal, Voronoi noise generators via libnoise.

pom.xml

@@ -183,6 +183,14 @@
       <type>jar</type>
     </dependency>
 
+    <!-- Noise library -->
+    <dependency>
+      <groupId>com.sk89q.lib</groupId>
+      <artifactId>jlibnoise</artifactId>
+      <version>1.0.0</version>
+      <optional>true</optional>
+    </dependency>
+
     <!-- Unit tests -->
     <dependency>
       <groupId>org.mockito</groupId>

src/main/java/com/sk89q/worldedit/math/noise/JLibNoiseGenerator.java

@@ -0,0 +1,62 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.math.noise;
+
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.Vector2D;
+import net.royawesome.jlibnoise.module.Module;
+
+import java.util.Random;
+
+abstract class JLibNoiseGenerator<V extends Module> implements NoiseGenerator {
+
+    private static final Random RANDOM = new Random();
+    private final V module;
+
+    JLibNoiseGenerator() {
+        module = createModule();
+        setSeed(RANDOM.nextInt());
+    }
+
+    protected abstract V createModule();
+
+    protected V getModule() {
+        return module;
+    }
+
+    public abstract void setSeed(int seed);
+
+    public abstract int getSeed();
+
+    @Override
+    public float noise(Vector2D position) {
+        return forceRange(module.GetValue(position.getX(), 0, position.getZ()));
+    }
+
+    @Override
+    public float noise(Vector position) {
+        return forceRange(module.GetValue(position.getX(), position.getY(), position.getZ()));
+    }
+
+    private float forceRange(double value) {
+        return (float) Math.max(0, Math.min(1, value / 2.0 + 0.5));
+    }
+
+}

src/main/java/com/sk89q/worldedit/math/noise/PerlinNoise.java

@@ -0,0 +1,76 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.math.noise;
+
+import net.royawesome.jlibnoise.module.source.Perlin;
+
+/**
+ * Generates Perlin noise.
+ */
+public class PerlinNoise extends JLibNoiseGenerator<Perlin> {
+
+    @Override
+    protected Perlin createModule() {
+        return new Perlin();
+    }
+
+    public double getFrequency() {
+        return getModule().getFrequency();
+    }
+
+    public void setFrequency(double frequency) {
+        getModule().setFrequency(frequency);
+    }
+
+    public double getLacunarity() {
+        return getModule().getLacunarity();
+    }
+
+    public void setLacunarity(double lacunarity) {
+        getModule().setLacunarity(lacunarity);
+    }
+
+    public int getOctaveCount() {
+        return getModule().getOctaveCount();
+    }
+
+    public void setOctaveCount(int octaveCount) {
+        getModule().setOctaveCount(octaveCount);
+    }
+
+    public void setPersistence(double persistence) {
+        getModule().setPersistence(persistence);
+    }
+
+    public double getPersistence() {
+        return getModule().getPersistence();
+    }
+
+    @Override
+    public void setSeed(int seed) {
+        getModule().setSeed(seed);
+    }
+
+    @Override
+    public int getSeed() {
+        return getModule().getSeed();
+    }
+
+}

src/main/java/com/sk89q/worldedit/math/noise/RidgedMultiFractalNoise.java

@@ -0,0 +1,68 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.math.noise;
+
+import net.royawesome.jlibnoise.module.source.RidgedMulti;
+
+/**
+ * Generates ridged multi-fractal noise.
+ */
+public class RidgedMultiFractalNoise extends JLibNoiseGenerator<RidgedMulti> {
+
+    @Override
+    protected RidgedMulti createModule() {
+        return new RidgedMulti();
+    }
+
+    public double getFrequency() {
+        return getModule().getFrequency();
+    }
+
+    public void setFrequency(double frequency) {
+        getModule().setFrequency(frequency);
+    }
+
+    public double getLacunarity() {
+        return getModule().getLacunarity();
+    }
+
+    public void setLacunarity(double lacunarity) {
+        getModule().setLacunarity(lacunarity);
+    }
+
+    public int getOctaveCount() {
+        return getModule().getOctaveCount();
+    }
+
+    public void setOctaveCount(int octaveCount) {
+        getModule().setOctaveCount(octaveCount);
+    }
+
+    @Override
+    public void setSeed(int seed) {
+        getModule().setSeed(seed);
+    }
+
+    @Override
+    public int getSeed() {
+        return getModule().getSeed();
+    }
+
+}

src/main/java/com/sk89q/worldedit/math/noise/VoronoiNoise.java

@@ -0,0 +1,52 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.math.noise;
+
+import net.royawesome.jlibnoise.module.source.Voronoi;
+
+/**
+ * Generates Voronoi noise.
+ */
+public class VoronoiNoise extends JLibNoiseGenerator<Voronoi> {
+
+    @Override
+    protected Voronoi createModule() {
+        return new Voronoi();
+    }
+
+    public double getFrequency() {
+        return getModule().getFrequency();
+    }
+
+    public void setFrequency(double frequency) {
+        getModule().setFrequency(frequency);
+    }
+
+    @Override
+    public void setSeed(int seed) {
+        getModule().setSeed(seed);
+    }
+
+    @Override
+    public int getSeed() {
+        return getModule().getSeed();
+    }
+
+}