[ODE] How to define new joints

[Thomas Paviot]

Hello,

I would like to use a joint with 2 degrees of freedom (DOF) between two 
parts : a rotational and linear freedom along the same axis. It would be 
a kind of mix between a slider and an hinge joint. I'm new to ODE and 
didn't found any answer in the archive list or over the internet.

I had an idea to go around the problem : define an new body, without 
mass paramters set to 0, and set an hinge joint between this body and 
part 1, and a slider joint between this body and Part 2. I think it's 
not very clean.

Any idea or suggestion?

Thomas