Thanks, @bplus The rotation code you posted is what I started with, but I wanted to rotate the points along a different axis and I landed on ATAN2 which does exactly what I wanted - except for the screen location distortions. The "ship" is a 3D-ish view of the little triangular ship from my game, Rock Jockey. I attached the crude sketch that I made to find the points...
![[Image: sketch.jpg]](https://i.ibb.co/3WmkxLX/sketch.jpg)
The paint points are just for fun for now. The ATAN2 command takes the normally-rendered ship and "cracks its back" somehow. I like the weird shape, but I don't get what's really happening... And, yeh, there's no distortion when ATAN2 is removed and replaced with Sin(radians).
![[Image: sketch.jpg]](https://i.ibb.co/3WmkxLX/sketch.jpg)
The paint points are just for fun for now. The ATAN2 command takes the normally-rendered ship and "cracks its back" somehow. I like the weird shape, but I don't get what's really happening... And, yeh, there's no distortion when ATAN2 is removed and replaced with Sin(radians).