Add-on: Selecting similar vertices

If you select the Similar sub menu when in vertex edit mode Blender already offers a few options to extend your current selection of vertices.

And although useful I frequently find myself in a situation where the available options are not sufficient. Especially in hard edge modeling of objects with identical sub parts I often want to be able to select vertices that not just share the same number of faces but where the these shared faces have something else in common. For example in the object shown below we have two different collections of bumps but the is no way to select just all the spiky tips in one go.

The simple add-on I present here fills this gap: it checks not only if vertices have the same number of surrounding faces but also whether the average angle between the face normals and the vertex normals is similar. This will allow you to distinguish between flat and spiky. The amount of similarity can be tweaked to allow for round-off errors or non smooth meshes.

Availability and usage

After downloading, installing and enabling the add-on from GitHub, the new selection option is available in vertex edit mode from the Select -> Select_similar -> Neighborhood

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