How do I squeeze the thickness of a torus?

[Brian Jones]

select the inner loop of polys (or two depending on the original torus being an even or odd number of segments) – select the Scale Tool enable Soft Selection and size the Radius of the Soft Selection so the yellow preview color covers as much of the polys as you need and scale. Probably one of the Falloff settings in Soft Selection will be best for what you are trying.

[Adam Trachtenberg]

My first thought is, why convert to polys when you can do this so easily with the primitive?

Assuming you have a good reason, though, here’s what I’d do:

* enable PLA animation in the time slider;
* select all polygons, record a KF, and use the “normal scale” function until you get the shape you want (and KF again);
* now enable the object tool and animate the object’s overall scale so the outer diameter remains constant.

You’ll have to set the object>scale keyframes to linear to match the linear PLA keyframes.

[Greg Neumayer]

Hi guys, thanks for your input. I’m working artwork that is already animated and textured, so I was just avoiding trying to start over with it.

The soft selection was a great fit, made even easier by simply selecting ALL the points. Since it was a circle (from the top), the selection center was already perfectly aligned if I selected everything. With a little tweaking of the strength, the fall-off of the selection effectively moved the inner points more than the outer points, which did the trick.

-Greg

Antifreeze Design
https://www.antifreezedesign.com