Solid Difference Issue

[Joseph_Oster]

@matthias2

ok @Joseph_Oster , here is something I put together for you.
I am doing the sweep in python […] and there I can do the check for the orientation.
And yes, vanilla sweep1 in gh is very likely to fail in many cases without any helpful error message. With my curve sorting, orientation and seampoint setting I got rid of almost all problems in my “builder”. Hope it helps.

It helps explain how you managed to create a defective brep that causes SDiff to fail. It’s great that @martinsiegrist was able to identify the flaw without seeing your code but his solution used RevSrf, not Sweep 1, so a mystery remained for everyone else who reads this thread.

@matthias2

I am sorry, I did not know that it was relevant. I internalised the surfaces to not overcomplicate the definition for anyone willing to help.

It is always very relevant to see how the defect was created. You hadn’t mentioned Python at all and tried to justify not sharing your code:

@matthias2

the whole definition is quite complicated and part of a bigger “builder” system I have created and I would prefer not to share

That doesn’t help anyone, except perhaps yourself. That’s not what makes this forum work. I can see the Python in your post but your latest GH file is useless to me because it requires Pufferfish.

You started this thread to ask for help, which Martin and I provided, despite your non-compliance with the forum guidelines. My Sweep 2 solution is simpler and works better than your Python/C# approach. Hope it helps. And I really hope you understand what I meant when I said this:

There really wasn’t enough in your posted code to thoroughly explore this issue.