how to get voronoi pattern on the geometry surface

Hi,

1. I'm trying to make voronoi pattern skin for a geometry, firstly got those voronoi brep within the geometry, but now i have trouble on drawing the intersected voronoi polygon on the geom surf.

[actually I need these voronoi polygon then to extrude them perpendicularly to create multiple openings(scale & move up) ]

2. And one more question is: is there any way that I could move the populated point in the geometry(the points i populated as central point of 'voronoi3d' ), by attracted with the a point(sun movement).  Through that, I can have multiple size of openings. 

Any one could help me with these. (see the attached rh&gh files)

Thanks a lot!