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Cube stills from an old Processing.org program.  More from this program

hexhedronArrayCrystal hexhedronFishEyeErfCity hexhedronFishEyeErfOj hexhedronFishEyeErfOj2 hexhedronFishEyeErfRunway hexhedronFishEyeGreyGrid hexhedronFishEyeGreySpace hexhedronFishEyeWhiteOj hexhedronGridFrost hexhedronGridJung hexhedronMatrixCrystal hexhedronMatrixJung