Geometry_Engine: Strange behaviour from Offset

[kThorsager]

Description:

For example, this outline kind of explodes out, and I'm sure there are more edge-cases which would be nice to resolve

@LMarkowski think you wrote most of it, unsure of the extent of this problem

Steps to reproduce:

Expected behaviour:

Test file(s):

https://burohappold.sharepoint.com/:u:/s/BHoM/EYRnedr3sFdIkVOPMxrHYtQBGoxnEB_SE-MMd5ZQk89Skw?e=8iLWhP

[LMarkowski]

Hi @kThorsager,
As said in the initial PR (#1314) , I am aware that this method is not perfect. The idea behind it was to create a method working for the most of typical project cases. Therefore offset works best for convex shapes. For concave it can produce errors as in your case, but it should throw a relevant warning. I've listed my concerns and ideas for improvement in this issue #1333, but honestly I can't tell if I'll be capable of implementing them any soon.
Sorry for not being very helpful. 🙈 If there is a need to have a more error-proof offset method I can try to find some time to give it another try. But it may require rewriting the method from the top down.

[kThorsager]

Ah, had missed that one, but my case is not critical and I can understand that this is not a simple method even now.

So mostly liked to capture this, to be picked up at some point 👍

[FraserGreenroyd]

Closing as duplicate of #1333 which captures more information about offset issues.