一段有意思的processing代码，旋转的方块

t=0

def setup():
size(600,600)

def draw():
global t
background(255)
translate(width/2,height/2)
rotate(radians(t))
for i in range(12):
pushMatrix()
translate(100,0)
rotate(radians(t))
rect(100,0,50,50)
popMatrix()
rotate(radians(30))
t+=0.1