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There's a library out there for it - but DXF is kinda painful to read/write. *sigh* I should work in that, again. My thinking is you parse all the vertices, then do some sort of convex hull algorithm...

I'm gonna call BS on some of these answers with a couple caveats ... first, I'm a machinist and I've never cut wood. Second, I can't think in C (and don't feel like converting right now), so the...