World Unit for Vertex Paint Brush Size?

[zoyt]

Hello,

I've been heavy user of MeshLab and PyMeshLab or many years at this point, and truly love using the software. Thank you all for your incredible work on it!

A while ago, I was working on annotating a mesh with vertex color, and noticed that the two options for brush size were pixels (based on the viewport) and percentage of bounding box, and that world unit, which is an option for many other MeshLab features, was not an option. I do not know how hard of a feature this would be to implement, but I think it would be incredibly helpful for many use cases. At the moment, if I need a specific size, I measure with the measuring tool, then try to get the closest value as a %BBox, which works fine, but is very clunky.

I feel that this would be an incredibly helpful feature for MeshLab to add, particularly because it isn't currently possible with any other free mesh manipulation/processing software that I am aware of.

Would it be feasable to add this to an upcoming version of MeshLab?

Thank you very much.