nb-sdouglas

Here is a slightly less buggy version.

1. Coordinate system is no longer ridiculously flawed, but still needs some work.
2. Adding P1 crossovers are now fixed (neighbor pairing bug in DrawPath if..elseif statement, was giving a null pointer exception and breaking everything).
3. Path zooming is now handled by scaling (though the center point and/or x,y coords need to be adjusted so it doesn't appear move).
4. Switching slices is still broken (another null pointer exception probably caused by a similar bug or mistake in logic). I'll look at this soon.