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2019/sketch_191219a/sketch_191219a.pyde

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+def setup():
+    size(600, 600, P3D)
+    strokeWeight(3)
+    noFill()
+    colorMode(HSB)
+
+def draw():
+    background(0)
+    translate(width / 2, height / 2)
+    rotateY(radians(mouseX))
+    rotateX(radians(mouseY))
+    num_points = 180
+    step = TWO_PI / num_points
+    for z in range(-width / 2, width / 2, 10):
+        beginShape()
+        for i in range(num_points):
+            sin_a = sin(i * step)
+            cos_a = cos(i * step)
+            fra_z = (frameCount + z) * .003
+            n =  noise(abs(cos_a) + cos_a + sin_a,
+                       abs(sin_a) + sin_a + cos_a,
+                       fra_z)
+            r = height / 2 * n
+            x = r * sin_a
+            y = r * cos_a
+            stroke(r % 256, 255, 255)
+            vertex(x, y, z)
+        endShape(CLOSE)
+
+
+def keyPressed():
+    if key == 's':
+        saveFrame("####.png")