The Ripple effect distorts the image in the manner of a pond
The effect is very similar to a pond ripple. The image is
distorted as if it was projected onto the surface of a pond and
then a stone had been dropped into the middle.
The following examples show the effect of a Ripple applied with
a number of different settings.
Original Image before Ripple
After Ripple with default settings
Height = 15
Length = 10