There was a script query in the Geomagic forum about umbilic torus.
Uploaded the corrected script to the prior post.
Used the hypotrochoid script to form a deltoid. R = 9, r = 3, d = 3.
Drew a big circle and unwrapped it for a baseline.
Used twist and flow to make an umbilic torus. I'll guess that it is not distorted? May try a complete
script to check accuracy.

- Brian