intersect fails sometime depending on the shapekey #50276
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Howard Trickey
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Reference: blender/blender#50276
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System Information
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Broken:
6c3d8fbShort description of error
Depending on the chosen Shapekey, The intersect(Boolean) operator will fail or not to take all loopcuts.
Exact steps for others to reproduce the error
Open Attached .Blend. If you call intersect while in edit mode with shapekey "ok", it will succeed to take all loopcuts (see cut in image's top left). If you take the shapekey "bug" some loopcuts will be missing (see arrow in picture).
bug intersect keyframe.blend
Changed status to: 'Open'
Added subscriber: @matali23
Operator is bpy.ops.mesh.intersect_boolean() and it also fails on 2.78a
Maybe it helps. This file bug intersect simple.blend is very simple and also fail. If you scale the selected face only by 2% (Hit "S" then type "1.02"), it works:
Wrong result:
Good result after scaling a little bit:
Added subscriber: @bliblubli
Can confirm the bug for both files.
Added subscribers: @LucaRood-3, @howardt
After discussion with @LucaRood-3 assigning to @howardt.
Added subscriber: @ideasman42
Boolean needs solid, watertight, non-self-intersecting geometry to give correct output, this report has planes that wont boolean correctly. Using Intersect (Knife) if you want to cut into geometry.
Changed status from 'Open' to: 'Archived'
@ideasman42 Can confirm that intersect (Knife) works great. @matali23 If you encounter the problem with intersect (Knife), feel free to reopen the task.