Y-Count: The number of bumps in the Y direction.
Radius: The size of the bump.
Spacing: How far apart the bumps are.

Surface - Red, Green, Blue: The Red, Green and Blue component of the surface.

Top - Red. Green, Blue: The Red, Green and Blue component of the top of the bump.

thanks to John for making his procedural shaders available to the Club. Don't forget to visit 3D-Gear or his plugins on his own site Detch.com. Please read the enclosed text file before using (pt)