Maniphest T40100

Bevel Bug
Closed, Duplicate
Actions

Assigned To
Howard Trickey (howardt)
Authored By
Vlad Mafteiu Scai (00Ghz)
May 8 2014, 9:28 PM
Tags
  • BF Blender
  • Modeling
Subscribers
Bastien Montagne (mont29)
Howard Trickey (howardt)
Julian Eisel (Severin)
marc dion (marcclintdion)
Vlad Mafteiu Scai (00Ghz)

Description

System Information
Win 8 64, 2x MSI 780 Lightning

Blender Version
Broken: (example: 2.70.5, 7660218, see splash screen)


Worked: (optional)

Beveling Edge creates huge spikes

Exact steps for others to reproduce the error
Checked attached blend file. Added edge issue to vertex group for easy selection and checking.

bug.blend529 KBDownload

Related Objects

Event Timeline

Vlad Mafteiu Scai (00Ghz) created this task.May 8 2014, 9:28 PM
Vlad Mafteiu Scai (00Ghz) raised the priority of this task from to 90.
Vlad Mafteiu Scai (00Ghz) updated the task description.
Vlad Mafteiu Scai (00Ghz) added a project: BF Blender.
Vlad Mafteiu Scai (00Ghz) edited a custom field.
Vlad Mafteiu Scai (00Ghz) added a subscriber: Vlad Mafteiu Scai (00Ghz).
Bastien Montagne (mont29) assigned this task to Howard Trickey (howardt).May 10 2014, 8:36 AM
Bastien Montagne (mont29) lowered the priority of this task from 90 to 50.
Bastien Montagne (mont29) added a project: Modeling.
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).
Voyager Voyager (voyagercgi) added a subscriber: Voyager Voyager (voyagercgi).Jun 1 2014, 12:51 PM

Percentage amount type works fine and other fails.

marc dion (marcclintdion) added a subscriber: marc dion (marcclintdion).EditedOct 3 2014, 2:09 PM

I've seen this many times. I've tried baking models when this is happening and didn't notice it right away. It shows up in the baked texture as torn triangles.

If I remember correctly, this always goes away for me when I set the number of segments to 1. Unfortunately, I still don't see the pattern behind what types of geometry are causing this.

Oh and, please pass this around. Reporting Bugs in Blender from Sebastian König http://vimeo.com/75649649

marc dion (marcclintdion) added a comment.EditedOct 3 2014, 5:10 PM

I have just found a situation that reproduces this.

bevelTear.blend793 KBDownload

The cylinder is default scale and when I apply the modifier, that long section that is created by the bevel modifier gives the object size as 12144.138 units along the y-axis and 3686.569 along the x-axis.

Julian Eisel (Severin) added subscribers: Howard Trickey (howardt), Julian Eisel (Severin).Feb 23 2015, 9:29 PM

Any news on this @Howard Trickey (howardt)?

Howard Trickey (howardt) added a comment.Feb 23 2015, 10:05 PM

I am on vacation now. Will look at this again when I get back, in a couple of days.

Howard Trickey (howardt) added a comment.Mar 17 2015, 1:54 PM

This is similar to bug T39486 where the "adjustment pass" to try to equalize bevel widths keeps accumulating a width increment. Here is a simplified file from the one in this bug report, that still exhibits the problem (even with a bevel amount of .0005).

adjust_error.blend431 KBDownload

I'm stuck with the same choices I enumerated in that other bug: either add annoying "do not adjust" workaround flag, or figure out a better adjustment algorithm that doesn't cause this accumulation of increments. I'll try harder to think of the latter but for now this bug remains pending.

Julian Eisel (Severin) added a comment.Mar 19 2015, 10:54 PM

@Howard Trickey (howardt), looks like the bugs can be merged as they likely have the same root?

Voyager Voyager (voyagercgi) removed a subscriber: Voyager Voyager (voyagercgi).Mar 20 2015, 12:37 PM
Howard Trickey (howardt) closed this task as a duplicate of T39486: bevel modifier behave weird with screwed object.Mar 20 2015, 12:49 PM