Speed up SmoothNormals by ~2x and reduce memory allocation. #26
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On my sample I see the time fall from 33ms to 16ms. Allocation falls from 500 kB to 380 kB. * Compute the deduplication by hand instead of using Linq (vast bulk of the improvement) * Average by dividing rather than normalizing (0.41ms to 0.06ms) * Don't add the first normal to zero, just assign it (0.16ms to 0.10ms)
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On my sample I see the time fall from 33ms to 16ms. Allocation falls from 500 kB to 380 kB.