Bevel modifier - Clamp Overlap broken #52474

Open
opened 2017-08-21 09:18:51 +02:00 by Marcin Twarowski · 10 comments

Windows 10

Broken: 2.79.0-git.43a6cf1-windows64
Worked: 2.79 RC2

bevel_modifier_clamp_overlap_bug.png

See attached blend file.clamp.blend

Windows 10 Broken: 2.79.0-git.43a6cf1-windows64 Worked: 2.79 RC2 ![bevel_modifier_clamp_overlap_bug.png](https://archive.blender.org/developer/F720177/bevel_modifier_clamp_overlap_bug.png) See attached blend file.[clamp.blend](https://archive.blender.org/developer/F720181/clamp.blend)

Changed status to: 'Open'

Changed status to: 'Open'

Added subscriber: @MarcinTwarowski

Added subscriber: @MarcinTwarowski

Added subscribers: @howardt, @mont29

Added subscribers: @howardt, @mont29
Howard Trickey was assigned by Bastien Montagne 2017-08-26 15:31:49 +02:00

@howardt that one should be for you? Thanks.

@howardt that one should be for you? Thanks.
Member

Hmm, not sure what to do about this.

I think that the clamp overlap is doing what it is supposed to do -- let the bevel go as far as it can before geometry bumps into other geometry, and no further. Only it is doing it "better" than it used to: it used to be very conservative and not go nearly as far as it could sometimes (which various users reported as bugs), and I put in code to do a better job of that in b2392afc50 ,

Now, because it lets the bevel go right up until it hits other geometry, it creates zero-area faces and overlapping edges, which no doubt is what is causing the artifacts you now see.

I suppose one thing I could do is stop it at, say, 95% of the value that would cause overlap. But that has the disadvantage that maybe people want to go right up to collision (and then merge stuff)?

Bastien, if you are listening, do you have an opinion on this?

Hmm, not sure what to do about this. I think that the clamp overlap is doing what it is supposed to do -- let the bevel go as far as it can before geometry bumps into other geometry, and no further. Only it is doing it "better" than it used to: it used to be very conservative and not go nearly as far as it could sometimes (which various users reported as bugs), and I put in code to do a better job of that in b2392afc50 , Now, because it lets the bevel go right up until it hits other geometry, it creates zero-area faces and overlapping edges, which no doubt is what is causing the artifacts you now see. I suppose one thing I could do is stop it at, say, 95% of the value that would cause overlap. But that has the disadvantage that maybe people want to go right up to collision (and then merge stuff)? Bastien, if you are listening, do you have an opinion on this?

In fact, it merely needs a 'remove doubles' option here. Think once D2724 is ready and merged, it could be added to bevel too?

In fact, it merely needs a 'remove doubles' option here. Think once [D2724](https://archive.blender.org/developer/D2724) is ready and merged, it could be added to bevel too?
Member

Yes, looks like that would work. I will wait for D2724 to be merged.

Yes, looks like that would work. I will wait for [D2724](https://archive.blender.org/developer/D2724) to be merged.

It's still the same in 2.80.

It's still the same in 2.80.
Howard Trickey was unassigned by Dalai Felinto 2019-12-23 16:36:35 +01:00

Added subscriber: @mano-wii

Added subscriber: @mano-wii

Since the D2724 was abandoned, I don't think we have any plans to fix this anytime soon.

Since the [D2724](https://archive.blender.org/developer/D2724) was abandoned, I don't think we have any plans to fix this anytime soon.
Philipp Oeser removed the
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Reference: blender/blender#52474
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