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
@mandarinx Thanks for this handy tool!
@fakkoweb I just used the script in 2019.4.14f1 and it workes for me. In the Mesh Filter component there's a new attribute called "Normals length", which is set to 0 by default. When I increase it, yellow lines appear, like mandarinx described.
It doesn't work when multiple meshes are selected.