basic framework

common/src/test/java/biome/BiomeTest.java

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+package biome;
+
+import com.dfsek.terra.api.math.ProbabilityCollection;
+import com.dfsek.terra.api.math.noise.samplers.FastNoiseLite;
+import com.dfsek.terra.api.math.noise.samplers.NoiseSampler;
+import com.dfsek.terra.api.platform.world.World;
+import com.dfsek.terra.api.world.biome.Biome;
+import com.dfsek.terra.api.world.biome.Generator;
+import com.dfsek.terra.biome.pipeline.Position;
+import com.dfsek.terra.biome.pipeline.TerraBiomeHolder;
+import com.dfsek.terra.biome.pipeline.expand.FractalExpander;
+import com.dfsek.terra.biome.pipeline.source.BiomeSource;
+import com.dfsek.terra.biome.pipeline.source.RandomSource;
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+
+public class BiomeTest {
+    @Test
+    public static void main(String... args) {
+        ProbabilityCollection<Biome> testBiomes = new ProbabilityCollection<>();
+        testBiomes.add(new TestBiome(Color.BLUE), 1);
+        testBiomes.add(new TestBiome(Color.GREEN), 1);
+        testBiomes.add(new TestBiome(Color.CYAN), 1);
+        testBiomes.add(new TestBiome(Color.MAGENTA), 1);
+        testBiomes.add(new TestBiome(Color.ORANGE), 1);
+
+        FastNoiseLite sourceSampler = new FastNoiseLite(123);
+        sourceSampler.setNoiseType(FastNoiseLite.NoiseType.WhiteNoise);
+
+        BiomeSource source = new RandomSource(testBiomes, sourceSampler);
+
+        int size = 20;
+        int expand = 6;
+
+        TerraBiomeHolder holder = new TerraBiomeHolder(size, new Position(0, 0));
+
+        holder.fill(source);
+        holder.expand(new FractalExpander(whiteNoise(4)));
+        holder.expand(new FractalExpander(whiteNoise(3)));
+        holder.expand(new FractalExpander(whiteNoise(2)));
+        holder.expand(new FractalExpander(whiteNoise(5)));
+        holder.expand(new FractalExpander(whiteNoise(7)));
+        holder.expand(new FractalExpander(whiteNoise(6)));
+
+        for(int i = 0; i < expand; i++) size = size * 2 - 1;
+
+        BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
+
+
+        System.out.println(size);
+
+        for(int x = 0; x < size; x++) {
+            for(int z = 0; z < size; z++) {
+                image.setRGB(x, z, holder.getBiome(x, z).getColor());
+            }
+        }
+
+        JFrame frame = new JFrame("Biome Viewer");
+
+
+        frame.setResizable(false);
+        frame.add(new JLabel(new ImageIcon(image)));
+        frame.pack();
+
+
+        System.out.println("Done");
+
+        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+
+        frame.setVisible(true);
+
+    }
+
+    private static NoiseSampler whiteNoise(int seed) {
+        FastNoiseLite noiseLite = new FastNoiseLite(seed);
+        noiseLite.setNoiseType(FastNoiseLite.NoiseType.WhiteNoise);
+        return noiseLite;
+    }
+
+    private final static class TestBiome implements Biome {
+        private final Color color;
+
+        private TestBiome(Color color) {
+            this.color = color;
+        }
+
+        @Override
+        public com.dfsek.terra.api.platform.world.Biome getVanillaBiome() {
+            return null;
+        }
+
+        @Override
+        public Generator getGenerator(World w) {
+            return null;
+        }
+
+        @Override
+        public int getColor() {
+            return color.getRGB();
+        }
+    }
+}