3D shadowed area - what's the best way? - Grasshopper - McNeel Forum

By A Mystery Man Writer

Hello everyone, I’m trying to create a file, which gives me a 3 dimensional shadow of buildings. Atm I don’t care if it’s a Point Cloud, mesh or brep. I want a geometry which representates 3D areas behind buildings which aren’t or are less exposed during the whole year. Tried it with “Mesh Ray” combined with Ladybug and also tried it with “Bounce from Surface” from ladybug to cull exposed voxels. But neither I get a nice result and it’s very slow. What workflow/method would you recommend? So