Daily Python kata rendered with Drawbot

py_kata_eliheuer_01_01_16.py

#!
# render with drawbot
# forked from https://gist.github.com/justvanrossum/bde7e9b5ae5f9b67dd52
canvas = 512   # canvas size
sq_size = 32   # square size
sq_num = 32   # number of squares
sq_dist = 24    # distance between squares

# used to center the object
width = sq_num * sq_dist 

frames_num = 50

for frame in range(frames_num):
    newPage(canvas, canvas)
    frameDuration(1/20)
    
    fill(1)
    rect(0, 0, canvas, canvas)

    # angle in radians
    phase = 2 * pi * frame / frames_num
    start_angle = 90 * sin(phase + 1 * pi)
    end_angle = 180 * sin(phase + 1 * pi)

    translate(canvas/2 - width/2.32, canvas/2)

    fill(0.2)
  
    for i in range(sq_num + 1):
        f = i / sq_num
        save()
        translate(i * sq_dist, 0)
        scale(2, 6)
        rotate(start_angle + f * (end_angle - start_angle))
        fill(1, i * 0.04, 0.2)
        rect(-sq_size/2, -sq_size/2, sq_size/16, sq_size)
        restore()

saveImage("StackOfSquares.gif")