Rotating a 'quad' .. How to?

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big10p
 #1
Trix, I'm still not 100% convinced, tbh. I'm sure I tried my demo using Birdie's TurnTriangle function and found it to be slower. Although, I don't think Birdie's function used sin/cos lookup tables but LUTs seem to be of limited use with modern CPUs.

Got any demo code that'll convince me? :)