View this model with the command
unitile2d -s t -w 8 -l 8 | poly_weave -p 0,1,0:0.0:-0.1:-0.3:-0.4:-0.3:-0.1:0FEV | off_util -M a | off_color -f U -e F -v F | antiview -x f -v 0.1 -e 0.1
