Forums Technical Discussion How to get rid of new vertices by subtraction Boolean ?

How to get rid of new vertices by subtraction Boolean ?

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Subutai
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I am trying to perform a subtraction of two primitives. Both having perfect rectangular topology.
Which somehow generates a couple of extra vertices on the remainder of the operation and I dont see how this can be avoided or how to solve this.
Edited by Subutai - April 12, 2024 10:42:46

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Tanto
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Not sure if you can avoid it during the boolean, but Labs Dissolve Flat Edges could remove them afterwards.
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Subutai
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Tanto
Not sure if you can avoid it during the boolean, but Labs Dissolve Flat Edges could remove them afterwards.
Unfortunately it offered only limited help here.
For some reason it even took away part of the mesh.

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CYTE
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Could you Post a simple scene with a mesh that Shows These asditional points?. I would like to take a look.

Cheers
CYTE
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Subutai
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CYTE
Could you Post a simple scene with a mesh that Shows These asditional points?. I would like to take a look.

Cheers
CYTE


I have set up something simple by trying to apply that same operation to an unedited cube under operation 'boolean3' and the problem persists there as well. While boolean2 is the original problem.
The nodes marked in yellow create the primitive that I use to cut.
Edited by Subutai - April 13, 2024 05:34:25

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BabaJ
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Is this what you were hoping for?

Boolean>Custom -- Keep A Outside B

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Subutai
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BabaJ
Is this what you were hoping for?

Boolean>Custom -- Keep A Outside B
Almost, the bottom vertices still seem to be present.

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BabaJ
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Subutai
Almost, the bottom vertices still seem to be present.

That's because of your input geometry.
Try cleaning it up first. You have double prims.
Edited by BabaJ - April 13, 2024 13:02:26

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picnic31_v2.hipnc (596.1 KB)

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