パターン作成 made by Akiyoshi Kitaoka,August 10, 12, 13, 14, 15, 21, September 15, 2022
area 1 R G B area 2 R G B
canvas size w h patten thickness
sinusoidal gratings
horizontal lower R G B upper R G B period v shift
vertical lower R G B upper R G B period h shift
canvas size w h
HCV View from the top
radius