Region difference

[ForestOwl]

For some time I try to figure out how to substract the green lines from the red lines. But, I cannot manage it right.

Do you might know a way to substract the green lines from te red lines?

problem create openings 00.gh (34.5 KB)

[HS_Kim]

Have a try clipper plugin.

Clipper for Grasshopper and Rhino

problem create openings 00_re.gh (23.1 KB)

[ForestOwl]

Hm…
Somehow I cannot manage it in this case. Do you know which mistake I am making?

problem create openings 01.gh (35.3 KB)

[HS_Kim]

Probably because your B set of areas eat everything of A…

[ForestOwl]

EDIT: oh yeah