gistfile1.py

    soBase = (HOscillator().
              speed(1).
              range(-5, 5).
              freq(4).
              property(H.ROTATION))
    rects = [HRect(rectDiameter)
             .fill(141, 73, 63, choice([64, 196]))
             .noStroke()
             .loc(x, y)
             .anchorAt(H.CENTER)
             .rotation(random(-5, 5))
             for x in range(50, 550, rectDiameter)
             for y in range(50, 550, rectDiameter)]
    for rect in rects:
        H.add(rect)
        soBase.target(rect)