ofxRipples swallow edges and adjust speed

[antimodular]

hi. this is not really an issue with your code but rather a feature request :)

i am trying to mess with your shader code for the ripple effect in order for the ripples to stop at the edges of the image. currently the ripples bounce of the edges and create more ripples. i would like the ripples to stop there or have them believe that they continue on in to infinity.

is that possible?

also, how would one make the up and down movement of the ripple slower without changing the dampening? i tried calling update less often but that makes things more choppy.

thanks.