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Tunnel update

After publishing the tunnel effect, I got some feedback from Jonas Lund on Google+. He suggested using fixed point math for all calculations, which resulted in a speed increase at around ten times what I initially had. This increase in speed almost makes it unneeded to have several levels of quality for present computers. His suggestions also included a few other tricks I was not aware of, which definitely will improve the next project I work on. You gotta love the internet.
Sunday February 17. 2013