[Bug]: Incorrect geometry generated (triangle sticking out)

[mezlondr]

What happened?

I found an IFC file that causes the webifc engine to produce incorrect geometry (no other viewers I’ve tried do that).

Version

0.72, update: persists in 0.75

What browsers are you seeing the problem on?

No response

Relevant log output

Anything else?

Not related to browser

[agviegas]

File privately available here.

[QuimMoya]

Seems to be solved

Can test it here -> https://thatopen.github.io/engine_web-ifc/demo

[mezlondr]

@QuimMoya Yes, the triangle seems to be gone, but now there appeared a new triangle that is sticking out from the roof. I will try to isolate it and I'll send an ifc via e-mail to you (probably tomorrow or soon-ish).

[mezlondr]

I've sent the problematic IFC file to Antonio, I was unfortunately not able to isolate the individual broken parts.

[agviegas]

Second model privately uploaded here.

[mezlondr]

I've noticed this problem could be related to #1665 (which seems to be actually not rendering issue but geometry generation issue), I can reproduce the triangle issue with my own renderer, if it's the same or related issue their model might be easier to debug as it's smaller. Hope it helps.

[QuimMoya]

It seems that solving the issue #1665 has partially fixed some problems in this model.