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2020/sketch_2020_06_28a/sketch_2020_06_28a.pyde

@@ -0,0 +1,28 @@
+n = 32
+t = 0
+
+def setup():
+    global s
+    noStroke()
+    frameRate(2)
+    size(320, 320)
+
+def draw():
+    s = width / n
+    textAlign(CENTER, CENTER)
+    textSize(14)
+    colorMode(HSB)
+    for x in range(n):
+        for y in range(n):
+            c = (frameCount + y) ** 2
+            bv = left_padded_bin(c, n)
+            if bv[x] == '0':
+                fill(0)
+            else:
+                fill(255)
+            rect(x * s, y * s, s, s)
+
+
+def left_padded_bin(v, n):
+    f = '{{:0{}b}}'.format(n)
+    return f.format(v)