[Xastir-dev] feasibility of extra drawing threads?

[Derrick J Brashear]

As I was moving across Ohio at highway speed, and zoomed to level 16 on a 
set of 1:24k USGS DRGs, I had a thought: a predictive drawing thread or 
threads which prepared what would be the next screen image if the 
autopanning moved you in the direction the cursor is most likely to go off 
the screen in next.

I can probably do the math to figure out what we should be drawing and by 
when, I don't think I can figure out how to draw an alternate image into 
an alternate pane. how feasible is this?