Triangle fan bevel behavior #40722
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Reference: blender/blender#40722
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System Information
Windows 7 64Bits
Blender Version
Broken: version 2.71 (sub 0), branch b'master', commit date b'2014-06-18' b'22:46', hash b'b49e6d0', b'Release'
Similar behaviour on 2.71 RC1
Short description of error
Of a triangle fan vertex the bevel/bevel modifier gives undesirable/unexpected behavior
Exact steps for others to reproduce the error
Check screenshot or attached file Bevel_TriangleFan.blend
Of a vertex where a few edges meet, making a few triangles that form a 90 degree corner the bevel modifier gives a weird effect with a few extra faces{F94833}
Changed status to: 'Open'
Added subscriber: @DuarteRamos
Added subscriber: @mont29
This is not a regression; the code is acting as intended according to choices documented in http://wiki.blender.org/index.php/User:Howardt/Bevel .
The "expected results" diagram might be gotten by some combination of the choices "don't preserve angles" and "do partial vertex bevel". I agree that in the case illustrated, the "expected results" look better.
Will have to decide whether to expose more choices to the user, or somehow recognize this as a special case, or leave as is.
I forgot to mention this is probably not a bug per-se, just regular behavior that I thought could use some improvement.
Just to be clear, on the example screenshot the "desirable" or "expected" behavior was hand modeled.
Added subscriber: @beta-tester
you can dissolve the inner edges of the fan, first. ([del]-key + "Dissolve Edges")
then add the bevel to the object to get the expected result...
i think the bevel algorithm is not able to figure out, what part of the object should be handled in what way - different users, different tastes of what the user expects.
Well that workaround seems to work pretty well, thanks for the tip
Added subscriber: @00Ghz
Would love to see more options for the bevel modifier. Like those found in C4D R15 . Although that's quite a lot of work I guess.
https://www.youtube.com/watch?v=x5G_EMc0M6Q
Especially that graph part would be cool.
Changed status from 'Open' to: 'Archived'
Added subscribers: @howardt, @JulianEisel
Taking the liberty to close this as todo - there even is a workaround to get the desired result. @howardt, hope you're fine with that?