the Boolean modifier disables the vertex group of the mesh #61967

New Issue

ronald johnson · 2019-02-26T07:25:47+01:00

ronald johnson commented

2019-02-26 07:25:47 +01:00

System Information
Operating system:
Graphics card:

Broken: Blender-2.80.0-git.54ffc4e19dc4-windows64

Worked: Blender 2.79

Short description of error
The boolean modifier disables vertex groups for whatever modifiers is under it on that mesh.

halp.blend

I used the boolean modifier and smooth modifier for this example.
the mid section is where the vertex group is
The first picture is with the boolean modifier on top. The whole thing is smoothed when only the mid section is supposed to be smoothed.
The second picture is with the smooth modifier on top. Only the mid section is smoothed

Exact steps for others to reproduce the error
I added a cylinder and edited the cylinder to make it look like this in the picture.
I added the middle vertices of the cylinder to a vertex group named "group" and attached a smooth modifier with the "group" as the vertext group.
I added a cube
i added a boolean modifier to the cylinder with the cube as the object and set it to difference

apologies for bad english

**System Information** Operating system: Graphics card: Broken: Blender-2.80.0-git.54ffc4e19dc4-windows64 Worked: Blender 2.79 **Short description of error** The boolean modifier disables vertex groups for whatever modifiers is under it on that mesh. [halp.blend](https://archive.blender.org/developer/F6715539/halp.blend) ![bool on top.png](https://archive.blender.org/developer/F6715527/bool_on_top.png) ![bool on bot.png](https://archive.blender.org/developer/F6715542/bool_on_bot.png) I used the boolean modifier and smooth modifier for this example. the mid section is where the vertex group is The first picture is with the boolean modifier on top. The whole thing is smoothed when only the mid section is supposed to be smoothed. The second picture is with the smooth modifier on top. Only the mid section is smoothed **Exact steps for others to reproduce the error** I added a cylinder and edited the cylinder to make it look like this in the picture. I added the middle vertices of the cylinder to a vertex group named "group" and attached a smooth modifier with the "group" as the vertext group. I added a cube i added a boolean modifier to the cylinder with the cube as the object and set it to difference apologies for bad english

ronald johnson commented

2019-02-26 07:25:47 +01:00

Added subscriber: @billyand

Sebastian Parborg commented

2019-02-26 16:45:39 +01:00

Added subscribers: @Sergey, @ZedDB

Sebastian Parborg commented

2019-02-26 16:45:39 +01:00

@Sergey I guess this is the intended behaviour? I'm guessing that the decision taken in #52763 still stands.

Sergey Sharybin commented

2019-02-26 17:03:58 +01:00

@ZedDB, this seems to be different from the report you've found. The limitation which is tricky to solve was related on preserving weight groups for the new vertices. Here it seems the weights are lost for the vertices which are not affected by boolean modifier.
Would expect this case to be working the same with and without boolean modifier.
At least form quick looking into the problem.

@ZedDB, this seems to be different from the report you've found. The limitation which is tricky to solve was related on preserving weight groups for the new vertices. Here it seems the weights are lost for the vertices which are not affected by boolean modifier. Would expect this case to be working the same with and without boolean modifier. At least form quick looking into the problem.

Campbell Barton was assigned by Sebastian Parborg

2019-02-26 17:22:08 +01:00

Sebastian Parborg commented

2019-02-26 17:22:08 +01:00

@Sergey ah, my bad.

ronald johnson commented

2019-02-28 06:05:55 +01:00

@Sergey Sharybin (sergey) will there be a notification or something when this is fixed?

Brecht Van Lommel commented

2019-03-04 18:45:09 +01:00

Closed as duplicate of #60552

Brecht Van Lommel closed this issue

2019-03-04 18:45:09 +01:00

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the Boolean modifier disables the vertex group of the mesh #61967