1 In texture generation is used random fractal terrain generation algorithm 

     2 [http://www.gameprogrammer.com/fractal.html].

     3 

     4 In 1 dimension algorithm starts with one straight line. Then it affects to that 

     5 line's midpoint with some random multiplied with H-value. After those first steps 

     6 it simply calls itself to both parts of line changing H-value smaller.

     7 

     8 Two dimensional version (programmed to the code) needs step for point's between 

     9 last density and step diagonal to last density's points, otherwise quite similar 

    10 to 1 dimensional version.

    11 

    12 Version of algorithm in our code is decided to be coded as iterative.

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