My current guess is that we’ll approximate Bezier curves with a polyline representation created by following the control points of 8 sub-curves of the original. Here’s a picture of the accuracy of that approximation.
I used SuzannaLinn’s SVG object example code, from her advanced SLua class to create these pictures. It was rather easy and had I not been just hacking them together, it would have been easier still. Good stuff, Suzanna!
Here’s another example:
Looks pretty good to me. We’ll have to test it on actual track of course, but I think it’s going to be just fine.
Safe paths!