How to wavey rectangle edges straight, sine wave

Hi so i am struggling with making the edgess of my surface straight whilst keeping the inside surface wavey, would anyone know of a way of achieving this?

Grasshoopper 1.gh (15.3 KB)

Something like this? (white group)


damped_wavey_srf_2024Oct27a.gh (18.4 KB)

Too many Multiplication components :exclamation:

1 Like

thats it thank you very much.

You might want to dial back the graph mapper a little, like this:

It can be handy to limit the range of the damping effect, as in three of the links I posted.

Here is one more example: