Please take a look at the following Webinar Quick Reference, if you are interested in learning:
how to Change the Roundness of your Rectangle Shapes, in the Animatron Editor.
(Example begins at: 8:51)
"I highly recommend watching through the entire Webinar video to get a better, fuller understanding of Creating Custom Shapes in the Animatron Editor" -Bryce (Your Animatron Guru)
View more Webinar Demos: Here, at our Youtube Webinar Archive!