Grid distortion on a curved facade

[lilachporges]

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.
grasshopper.gh (16.1 KB)
rhyno surface.3dm (10.8 MB)

[Joseph_Oster]

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

Distributing points randomly according to proximity to attractor

Here is another method with almost identical results but is more accurate on curved surfaces? It doesn’t use Pull Point and the linear distance between points and attractors. It relies instead on the lengths of CrvSrf (Curve On Surface). [points_density_2021Apr17a] points_density_2021Apr17a.gh (56.1 KB)

2D grid distortion:

Grid Deformation using Attractor Point

Nice! I added edge damping (white group): [grid_attractor_2021May10a] grid_attractor_2021May10a.gh (19.7 KB) And with a Graph Mapper to avoid the linear fall-off: [grid_attractor_2021May10b] grid_attractor_2021May10b.gh (21.2 KB)

3D grid distortion:

Nurbs Curves for Grid Distortion in 3 Dimensions

P.S. Adapted to a 3D grid (using interpolated curves instead of NURBs curves, but you can easily change that), with a switch (blue group) to enable/disable edge damping: [nurbs grid_2021May13a] nurbs grid_2021May13a.gh (30.2 KB)