Applying Lunch box on an irregular Patch / surface

[jancuales (Jc)]

Hi everyone, I would like to know how to constrain a lunchbox 2D truss on an irregular patch. It ignores the boundaries as shown on the picture.

query.3dm (780.0 KB) query.gh (8.6 KB)

[HS_Kim]

query_re.gh (187.0 KB)

[jancuales (Jc)]

Thank you, HS_Kim!

[rocio]

Hey! I’d like to know how can I add the pipe tool to line a and line b. Because Ive tried and it just pipes the whole structure.
ty