DiamondSquare

It's like... autogenerated heightmaps for your projects, man.

Example

	var myInitMap = [	4,1,2,4,
						1,4,2,2,
						3,2,1,6,
						2,1,1,5	];
	
	// Create a new DiamondSquare algorithm from the initial map, with a random
	// roughness factor
	var ds = new DiamondSquare(myInitMap,4,4,Math.random()*10);
	
	
	// Iterate until you're satisfied. The map doubles in size with each
	// iteration.
	ds.iterate();
	
	...
	
	ds.iterate();
	
	// Then the data you want is in:
	ds.dataStore;

There's a demonstration file that just renders the heightmap to canvas (with some rather buggy bilinear interpolation) but the intention is that you use it for geometry or something exciting like that!