Joint version 1: uvs are (nearly) ok.
The error in vertices calculation is to have only one vertices at each corner on the bottom plane. This involves have only 1 uv coordinate for these vertices, where 2 are required – see uvunwrap here below.
Each joint can receive a configuration to deform the height of its faces. this will certainly be done via shader later.
That’s it for this week, back on monday for other adventures!