Boolean operations break on simple objects with edge-face intersections #70371
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Reference: blender/blender#70371
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System Information
Operating system: Darwin-18.7.0-x86_64-i386-64bit 64 Bits
Graphics card: Intel(R) Iris(TM) Graphics 6100 Intel Inc. 4.1 INTEL-12.10.12
Blender Version
Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-29 19:10, hash:
24be998b98
Short description of error
Boolean operations break on simple objects where the edge of one object intersects the face of the other at more than just a point (i.e. they're on the same plane).
Exact steps for others to reproduce the error
In edit mode, subdivide the startup cube with two cuts (into thirds).
Create a little cube with a size of
2/3
and move it along the x axis by1
.Add a boolean modifier to the startup cube and set the little cube as the difference object.
Observe that the difference fails.
The "Carve" solver in Blender 2.79b works with this specific case but it's not available in 2.80. My usual solution to this problem is to move objects around by 0.0001 but this gets complicated with beveled edges and complex meshes.
boolean test.blend
Added subscriber: @boolean-4
My bad, I just found https://developer.blender.org/T67744. Please ignore this bug report.
Added subscriber: @lichtwerk
Yes this is a known thing, see #54024 (BMesh boolean fails when edge is co-planar to face (under some circumstances)) (or similar in #47030 (BMesh booleans (track todo's))).
this is hopefully fixed by #67744 (Boolean Redesign) at some point...
Will close/merge into #54024...
Closed as duplicate of #54024