
Maya only converts when you run the convert command, and most of the time is successful, although there are a few unusual cases where the conversion fails. I imagine that Imagine and Shape is doing something similar, but I honestly don’t know. T-Splines for Rhino converts to NURBS for display, so anytime you’re looking at a T-Spline, you’re actually looking at the NURBS conversion (you can toggle this option for speed if you want). The conversion can’t be exact near star points (extraordinary points), for mathematical reasons. They all convert to NURBS when requested.

Sub-D modeling is used in Maya, T-Splines, and Imagine and Shape, and they all need to keep a control mesh around to work on.


Saw this come up on my alerts, figured I’d give a quick response…
