'Invalid Surface' from 'SrfSplit'

Can anyone please explain to me why I'm getting an 'Invalid Surface' from 'SrfSplit'?

I am projecting a joined curve and line onto a surface and expecting two surfaces to result from 'SrfSplit' - one is valid ('idxSplit=0'), but not the one I want; the other ('idxSplit=1') is "Invalid"?

How do I get the remainder of this surface? Oh, wait! As I write this, an idea... and yes, it works; I can get the surface I want by using 'SDiff (Solid Difference)' between the original surface and the "hole" surface returned by 'SrfSplit'.

So now my question is, why is this 'SDiff' step necessary? Why does 'SrfSplit' fail to return both surfaces?

Attachments:

split_surface_2015Jul10a.gh, 21 KB

Replies to This Discussion

Permalink Reply by Pieter Segeren on July 10, 2015 at 9:25am

Hi Joseph, the line and curve didn't join succesfully because they intersect. They should meet at one point.

Permalink Reply by Joseph Oster on July 10, 2015 at 11:12am

Oh! Very good eye, thank you. I see that now. I was stuck on the assumption that they are supposed to have a point in common but I see that something got corrupted along the way... digging into it, thanks again!

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