Can't subtract solid geometry with csg-builder

Hello ​@crazypix, may I ask why we are extruding the terrain downwards and creating a solid?

If the terrain intersect determines the top/bottom (basement) stories, have you considered clipping the solid with your terrain layer, and then calculating the volume of each building part? (eg. everything below terrain would be basement). Hope this helps, Kailin.

Hey kailinatsafe

Thank you so much for your input.

Yes Clipping is what i’m trying now, but ist seems to be ultra slow.
I'm afraid i'll have to find another, more efficient solution.

My first idea was to work with boolean operation (cs-gbuilder) so i thought it needed two solids for this transformer…

Kind regards
Stefan

Okay Clipper seems to work in some ways, but i didn’t figure out how to clip the buildings as i whiched.
I need cuts in the xy-axis and not along the z-axis.
Do you have some tips or clipper-properties for this?

Thank you so much.

Dear kailinatsafe

Your Input worked just perfect in my concept =)

Thank you so much! Have a nice day.
 

thank you