from math import sin, cos, radians
from pyx import *

angle = 10
factor = 1.0 / (cos(radians(angle)) + sin(radians(angle)))

cc = canvas.canvas()
cc.stroke(path.rect(-2, -2, 4, 4))

c = canvas.canvas()
for i in range(10):
    c.insert(cc, [trafo.rotate(i*angle), trafo.scale(factor**i)])
c.writeEPSfile("insert")
c.writePDFfile("insert")
