car to pol coordinate map distorsion with td.repos.jxs or any other shader

Hi,

I am trying to wrap the image or movie into polar world with td.repos.jxs but I just can't figure how. I would basically like to do exactly the same thing as jit.repos does in its help file.

I was also checking Vade's v001.cartopol.jxs but it doesn't do what I need.

Below is the patch where jit.repos and td.repos.jxs help files are combined:

Thanks for any help!