Interface  Description 

Fractal 
Interface for a general fractal basis.

Class  Description 

FractalSum 
FractalSum is the simplest form of fractal functions summing up a few octaves
of the noise value with an ever decreasing roughness (0 to 1) amplitude
lacunarity = 2.0f is the classical octave distance
Note: though noise basis functions are generally designed to return value
between 1..1, there sum can easily be made to extend out of this range.
