Random asteroid generation

gistfile1.java

public RandomAsteroidBuilder makeBall(float radius) {
        int x2 = width / 2;
        int y2 = height / 2;
        int z2 = depth / 2;

        float radiusShare = 8;
        float randomShare = 2;

        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                for (int z = 0; z < depth; z++) {


                    float radiusComponent = (float) Math.sqrt(Math.pow(x2 - x, 2) + Math.pow(y2 - y, 2) + Math.pow(z2 - z, 2));

                    float noiseComponent = (
                            SimplexNoise3D.eval(x / 10f, y / 10f, z / 10f) +
                                    SimplexNoise3D.eval(x / 100f, y / 100f, z / 100f)) / 2.0f;

                    float density = ((radiusShare * radius / radiusComponent) + randomShare * (noiseComponent - 0.5f)) / (radiusShare + randomShare);


                    TileType type;
                    if (density < 0.5) {
                        type = Textures.tileTypes.get("void");
                    } else if (density < 0.6) {
                        type = Textures.tileTypes.get("silicon rock");
                    } else if (density < 1.0) {
                        type = Textures.tileTypes.get("carbon rock");
                    } else {

                        if (SimplexNoise3D.eval(x / 4f, y / 4f, z / 4f) < 0.6) {
                            type = Textures.tileTypes.get("common ore");
                        } else {
                            type = Textures.tileTypes.get("precious ore");
                        }
                    }

                    tiles[x][y][z] = type;
                }
            }
        }
        return this;
    }