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Maniphest T46700

select interior faces doesn't support some kinds of interior geometry
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Description

System Information
win 7 pro

Blender Version
Broken: (example: 2.76.1 bfdb420)
Worked: (optional)

Short description of error
when you try to check if there are some interior faces, from menu you select interior faces in face mode. but it does not show them. you only can do this by select non manifold in egde mode and then find the wrong ones.
Exact steps for others to reproduce the error
when you open file, there is black frame where interior faces are. change to face mode, then select interior faces from menu. nothing happens. change to egde mode and select non manifold, and there are 2 interior faces which were not selected earlier.

interior faces_bug.blend110 KBDownload

Related Objects

Event Timeline

daniel (midan) created this task.Nov 5 2015, 10:48 AM
daniel (midan) raised the priority of this task from to 90.
daniel (midan) updated the task description. (Show Details)
daniel (midan) added a project: BF Blender.
daniel (midan) edited a custom field.
daniel (midan) added a subscriber: daniel (midan).
Campbell Barton (campbellbarton) claimed this task.Nov 5 2015, 11:38 AM
Bastien Montagne (mont29) lowered the priority of this task from 90 to Normal.Nov 5 2015, 12:43 PM
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).
perfection cat (sindra1961) added a subscriber: perfection cat (sindra1961).Nov 7 2015, 6:34 AM

I'm sorry, I cannot find interior faces in the blend file which you showed.
Interior faces should mean such faces.

untitled.blend80 KBDownload

interior faces: All edges constituting face is shared by another faces more than two.

Campbell Barton (campbellbarton) added a comment.Nov 7 2015, 8:07 AM

Hi, this isn't a bug - in that the current code works as intended.

However it would be good to be able to select interior regions (which is what you're looking for).

This could be done but is more involved.

I'd like to get this working, so assigning to myself as a TODO.

Bastien Montagne (mont29) added a project: Modeling.Nov 7 2015, 8:45 AM
Bastien Montagne (mont29) edited a custom field.
daniel (midan) added a comment.Nov 7 2015, 7:02 PM

when I read tip which shows after I am pointing out on select interior faces :" select faces where all egdes have more than 2 face users" I understand it as in example below. Face in center of each of two cubes is interior( edges have more than 2 face user), so why this function works only in left one? Am I wrong?

still bug.blend80 KBDownload

perfection cat (sindra1961) added a comment.Nov 9 2015, 2:02 AM

There is no face here.


Therefore, this edge does not have faces sharing it more than two.

daniel (midan) added a comment.Nov 9 2015, 10:40 PM

ok, I understood

Campbell Barton (campbellbarton) removed Campbell Barton (campbellbarton) as the assignee of this task.Aug 11 2016, 6:35 AM
Campbell Barton (campbellbarton) added a subscriber: Campbell Barton (campbellbarton).
Campbell Barton (campbellbarton) moved this task from Backlog to Medium Term on the Modeling board.Jun 17 2020, 3:11 PM
Campbell Barton (campbellbarton) moved this task from Medium Term to Todo (Mesh Editing) on the Modeling board.
Campbell Barton (campbellbarton) renamed this task from select interior faces bug to select interior faces doesn't support some kinds of interior geometry.Jan 19 2021, 7:37 AM
Campbell Barton (campbellbarton) merged a task: T83567: Select Interior Faces should only be faces in the interior of a mesh.
Campbell Barton (campbellbarton) added subscribers: M. Miller (zhackie), Philipp Oeser (lichtwerk).