Rock

Required files:

rockcolor.sl
rockdisp.sl
rock.rib

Displacement

 * ---- surface parameters ----------
 * freq: number of cells along the s and t directions
 * twist: twists the voronoi regions along s and t. Good values
 *        depend on frequency.
 * seed: controls random parameters
 * Km: amplitude of displacement
      

Surface

 * ---- surface parameters ----------
 * freq: number of cells along the s and t directions
 * twist: twists the voronoi regions along s and t. Good values
 *        depend on frequency.
 * seed: controls random parameters
 * tipcolor: color at the voronoi cell boundaries
 * sidecolor: color in the center of the cell
      

freq = 10 twist = 0 seed = 1942 Km = 0.1 tipcolor = [1 1 1] sidecolor = [0 0 0]	freq = 10 twist = 1 seed = 1942 Km = 0.1 tipcolor = [1 1 1] sidecolor = [0 0 0]	freq = 10 twist = 2 seed = 1942 Km = 0.1 tipcolor = [1 1 1] sidecolor = [0 0 0]
freq = 5 twist = 0.75 seed = 1942 Km = 0.1 tipcolor = [1 1 1] sidecolor = [0 0 0]	freq = 20 twist = 0.75 seed = 1942 Km = 0.1 tipcolor = [1 1 1] sidecolor = [0 0 0]