I have a previous wave pattern that has a rounded top and bottom.
The center part of the wave is almost vertical.
I call it a whip snake.
Instead of the wave just bouncing up and down,
I find your eye is hooked to a wave top and dragged to the end of the display.
You would just need an additional setting for top and bottom radius.
I tried most all the settings, and can not reproduce the effect.
Joel