Javascript :: Find To Go Forward Or Reverse In Two Points On A Wrapping Timeline?

Mar 29, 2011

I have a time line of 500 points. On a timeline that wraps around how do I find if the shortest distance between two points is to go forward or backward? Example,I'm on frame 30, the target frame is 100 and the total frames are 500. I know that going it will take 70 frames to get to 100 going forward and 430 to go in reverse but I don't know the codes to figure this out. I'm using ActionScript but I think I would understand the codes if it were written in other professional languages like JavaScript.

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