Grid distortion on a curved facade

Hi guys,
I have a curved surface, and I would like to apply a grid distortion on it (according to radiation analysis or other parameters). I tried two different distortion grasshopper codes, but the grid moves away from the surface in a weird way. (16.1 KB)
rhyno surface.3dm (10.8 MB)

Not a grid but could be? Surface point density affected by attractor points:

2D grid distortion:

3D grid distortion:

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