ore-gen.java

    public static final int IMAGE_ZOOM = 8;
    public static final int WIDTH = 64;
    public static final int HEIGHT = WIDTH;
    public static final double FREQUENCY = 1.0 / 4;
    public static final int OCTAVES = 8;

    public static void main(String[] args) throws IOException {
        Path path = Paths.get("perlin.png");
        BufferedImage image = new BufferedImage(WIDTH * IMAGE_ZOOM, HEIGHT * IMAGE_ZOOM, BufferedImage.TYPE_INT_ARGB);
        Graphics2D graphics = image.createGraphics();
        Const zero = new Const();
        Const one = new Const();
        Const negativeOne = new Const();

        zero.setValue(0);
        one.setValue(1);
        negativeOne.setValue(-1);

        Perlin perlin = new BalancedPerlin();

        perlin.setSeed((int) System.currentTimeMillis());
        perlin.setFrequency(FREQUENCY);
        perlin.setNoiseQuality(NoiseQuality.FAST);
        perlin.setOctaveCount(OCTAVES);

        Add unitPerlinPartial = new Add();

        unitPerlinPartial.setSourceModule(0, perlin);
        unitPerlinPartial.setSourceModule(1, one);

        Multiply unitPerlin = new Multiply();
        Const half = new Const();

        half.setValue(0.5);

        unitPerlin.setSourceModule(0, unitPerlinPartial);
        unitPerlin.setSourceModule(1, half);

        Cache unitPerlinCache = new Cache();

        unitPerlinCache.setSourceModule(0, unitPerlin);

        Const threshold = new Const();
        Const negativeThreshold = new Const();
        Const leftover = new Const();

        threshold.setValue(0.52);
        negativeThreshold.setValue(-threshold.getValue());
        leftover.setValue(1.0 / (1 - threshold.getValue()));

        Add selectThreshold = new Add();

        selectThreshold.setSourceModule(0, unitPerlinCache);
        selectThreshold.setSourceModule(1, negativeThreshold);

        Multiply normalizedSelectThreshold = new Multiply();

        normalizedSelectThreshold.setSourceModule(0, selectThreshold);
        normalizedSelectThreshold.setSourceModule(1, leftover);

        Clamp clamp = new Clamp();

        clamp.setLowerBound(0);
        clamp.setUpperBound(1);
        clamp.setSourceModule(0, normalizedSelectThreshold);

        Module module = clamp;

        for (int y = 0; y < HEIGHT; y++) {
            for (int x = 0; x < WIDTH; x++) {
                double value = module.getValue(x, y, 0);
                System.out.println(value);

                graphics.setColor(Color.getHSBColor(0, 0, (float) Math.max(0.0, Math.min(1.0, value))));
                graphics.fillRect(x * IMAGE_ZOOM, y * IMAGE_ZOOM, IMAGE_ZOOM, IMAGE_ZOOM);
            }
        }

        ImageIO.write(image, "PNG", path.toFile());
    }