How to make "waves" use subd?

how to make “waves” use subd ?

trying to create waves like on the yellow background.

I want waves like these

fast and simple to get the subD faces / typology:
_MeshPlane (example 16x16 faces)
_curve … draw some curves
_quadremesh … select the curves as guides for edgeloops

optional turn on _softtransform
move the corresponding edges up. with gumball.
… dont forget to turn of softtransform.

read help of above commands for more info.

kind regards -tom

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