topic Re: self-intersecting error after very simple extrusion in Fusion Support Forum

self-intersecting error after very simple extrusion

elf_monkey — Sat, 09 Sep 2017 19:49:22 GMT

Please help

After creating an extrusion in SCULPT mode with a very simple sketch, I´m unable to fill a hole in the face of the resulting shape.

I get an conversion error, some surfaces are self intersecting even tough the sketch is very simple and the model quite straightforward

Here a screencast

Thanks

Re: self-intersecting error after very simple extrusion

jeff_strater — Sat, 09 Sep 2017 20:33:07 GMT

Hi @elf_monkey,

It looks like the screencast didn't make the post. I think you have to click on "Insert" to get it to actually get inserted (it's not obvious...):

Jeff

Re: self-intersecting error after very simple extrusion

elf_monkey — Sat, 09 Sep 2017 21:33:12 GMT

I tough I clicked insert. Lets see if this time.

Thanks

Re: self-intersecting error after very simple extrusion

jeff_strater — Sat, 09 Sep 2017 21:50:52 GMT

Thanks. The video made it through. I'm able to reproduce this. I'll file a bug. It looks like "Fill Star", and "Reduced Star" modes for Fill Hole both have this problem. I did find that "Collapse" will succeed:

Re: self-intersecting error after very simple extrusion

jeff_strater — Sat, 09 Sep 2017 21:57:14 GMT

Filed as FUS-35114

Re: self-intersecting error after very simple extrusion

laughingcreek — Sun, 10 Sep 2017 00:48:38 GMT

Jeff, FWIW: T-splines has failed at this type of fill since its inception (Or at least since I first used it in Rhino many years ago, before AD bought it). Fixing probably wasn't a high priority because it also produces terrible geometry, at least from a T-spline centric view. I've always had to build more T-spline edges and create good geometry to close surfaces like this.