It's meant to be simple and easy to use, and therefore it has been made as a custom editor of MeshFilter. It needs no preparations.
Drop the file in an Editor folder.
- store the normals length i editor prefs
- adjust the normals length in the mesh filter inspector
Hi @fakkoweb. I just tried the script in 2021.2.10 and it worked like expected. I tested with the default cube. I'm not quite sure why it doesn't work on your end. You should see yellow lines drawn along the normals of the mesh, in the scene view.