Generating a Color-Ramp
The illustration above shows the full color ramp generated by the
function.
hStart [, , , etc.]
sets the starting hue, at the darkest color in generated ramp.
The color set using hStart can be positioned anywhere in the ramp by using hStartCenter. is the start of the ramp, is the end of the ramp. By default hStartCenter is set to which means the starting hue is in the middle of the ramp.
hCycles [, , , ]
Defines the about of hue variation in the ramp. 1 is a full cycle around the starting hue, 0.5 is half a cycle (complementary color), -0.5 is half a cycle in the opposite direction.