Are there any classes letting you make fractal TerrainQuad?
I have found FractalTileLoader but its for TerrainGrid only from what I understand.
There are also these nice PerturbFilter, OptimizedErode, etc, but how do I use them with TerrainQuad if it asks for heightmap?
You can use the FractalSum class to generate noise.
Then you can create a BufferedImage from the result and save it on disk.
Or you can use this constructor for example:
[java]TerrainQuad(String name, int patchSize, int totalSize, float heightMap)[/java]
And insert your values there.