diamondSquare

Random terrain generator using the diamond square-algorithm, or the random midpoint displacement algorithm. You can choose between successive random addition and successive random displacement.

Source files best viewed using Qt Creator.

Usage -- NOT CURRENT

Compile for use with the Matlab/Octave-script matlab-compile/compile.m. Then run in Matlab/Octave using

diamondSquare(power2, H, corner1, corner2, corner3, corner4, sigma, addition, PBC, RNG, seed)

• power2 decides the size of the system
• H is the Hurst-exponent
• corner1-4 is the initial z-value in the corners of the grid
• sigma is the inital standard deviation of the random displacement
• addition chooses between the successive random addition and successive random displacement algorithm
• PBC sets if you want periodic boundaries
• RNG sets the type of random number generator (0 == none, returns 0.0; 1 == uniform; 2 == gaussian)
• seed is the seed of the random number generator used.

Only power2 and H is need for the program to run, the rest are optional.