Canvas Splines

I have no idea if this is even feasible at all, but a canvas item that ‘generates’ along a spline and can have its width changed would be immensely useful.

The main thing I can see this being used for is for tracks, like roads or train tracks.
It’s very difficult, if not impossible, to create a road that simultaneously curves up and at an angle that is completely smooth, which means you can’t really go crazy with racetrack layouts, so being able to create a spline and have the curves in the track made for you would be immensely useful.
It would also just be nice to be able to create one long spline for a train that rides around a huge map rather than agonizingly placing each canvas shape to make it.

This is planned!