Chunk generation in Factorio

Graphics
1

How is the chunk generation implemented in Factorio?
I followed some online tutorials using Perlin noise and tried different parameters but the results looked way different than what I expected.

        public Texture2D GenerateSpread(int seed, int width, int height) {
            var spreadTexture = new Texture2D(width, height);

            for (int x = 0; x < spreadTexture.width; x++) {
                for (int y = 0; y < spreadTexture.height; y++) {
                    var xCoord = (x + seed) * granularity / 100f;
                    var yCoord = (y + seed) * granularity / 100f;
                    var noise = Mathf.PerlinNoise(xCoord, yCoord);

                    var color = Color.black;
                    if (noise > threshold) color = Color.white;
                    spreadTexture.SetPixel(x, y, color);
                }
            }
            spreadTexture.Apply();
            return spreadTexture;
        }
2

This is the 2D forum, not the Graphics forum. I don’t see what the above has to do with Tilemap either TBH.

I’ll move your post for you.

3

Well, how are the results different from what you expected? You really gotta be more specific if you want anyone to be able to help.