About

This generator works by overlaying a bunch of perlin noise-like patterns with different sizes to create some kind of fractal noise.

It was originally made for testing terrain and cave generation patterns for Volve.

Each layer uses 3 values: X for how wide it is, Y for how tall it is, and strength for how much effect it has on the image (smaller makes it have less effect). X and Y can have decimals, e.g. "0.5". Each layer is applied from top to bottom (bottom-most layer is applied last), so all layers except the first should have a strength below 1.

If you have trouble understanding it, try replacing all the text with this and fiddle around with the numbers:

8, 32, 1, 10, 2, 0.2

The big text area is for javascript code that can modify the colors. You can modify the colors based on the current alpha value, you have 4 variables available: 'r', 'g', 'b', and 'alpha'. Try pasting this into it:

if (alpha < 0.48) { // make dark areas blue r = 0.4; g = 0.8; } alpha = (alpha-0.3) * 2.5; // increase contrast