Boolean modifier difference not working properly, when plane's vertex is on the other mesh's edge. #64544
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Reference: blender/blender#64544
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System Information
Operating system: Ubuntu 19.04
Graphics card: NVIDIA GeForce RTX 2080
Blender Version
Broken: 2.80 Beta ; Date: 2019-05-12 22:25 ; Hash:
05f1451d72; Branch: blender2.7Worked: unknown
Short description of error
Boolean modifier difference not working properly with plane in certain position.
As you can see in the attached file bug_report_01.blend , all 3 planes use boolean modifier difference with a cube. First 2 planes are fine, but boolean modifier on plane #3 not working at all.
With cube hidden:
With cube shown:
Exact steps for others to reproduce the error
I'm not sure if setting cube origin to left bottom is necessary, but that's how I've found the problem. Rotating the cube. Adding plane with boolean modifier difference with cube, and setting it so its left bottom side would align with the cube origin.
Added subscriber: @alexds9
Added subscriber: @Gvgeo-1
Can confirm.
The problem is when the plane's vertex is on the cube's edge.
Rotated objects a bit and moved origins.
Added subscriber: @lichtwerk
Hm, this doesnt seem to be covered by #47030 yet?
Initially thought that #47087 may have the same underline cause.
But it is caused by the other mesh geometry.
In this case, it is like that the creation of new vertex fails, cause it already exist.Causing the new edge and Boolean to fail.
Have no idea what causes it. Tested with extrude. Can create the edge, but still fails.
Boolean modifier difference not working properly with plane in certain alignment with other objectto Boolean modifier difference not working properly, when plane's vertex is on the other mesh's edge.Added subscriber: @ideasman42
Added subscriber: @HooglyBoogly
It looks like this is still an issue with the Exact mode. That's because the expected input is two manifold meshes. The cube is manifold but a plane isn't. I wonder if this could be supported though? If one input is manifold it should be possible to tell which parts of the other are outside of it?
Added subscriber: @howardt
Changed status from 'Confirmed' to: 'Resolved'
The commit just mentioned makes this case work properly in the exact mode.