Tile (BREP) on a curved surface on a culled pattern

Hi,

I need the help regarding placing a block of brep on non planar curved surface

i have made the brep block and the grid too
(i need a spacing grid instead of uv count grid so i used offset to achieve it
since regular grid does not work in non planar surface and project cant work for brep )

FINAL.gh (52.3 KB)

the culling pattern need to be a alternating pattern more like
xoxox
oxoxo
xoxox

i tried it in regular grid and worked perfectly but not on curved surface
i attached the the culled pattern gh too(the working one)

cull pattern.gh (23.7 KB)

Thanks in advance