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...
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).
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).