examples/circles.py

   1 from pyx import *
   2
   3 circ1 = path.normpath(path.circle(0, 0, 1)) # you don't really need normpath,
   4 circ2 = path.normpath(path.circle(1, 1, 1)) # but its better to have it once
   5                                             # for those operations
   6 (circ1a, circ1b), (circ2a, circ2b) = circ1.intersect(circ2)
   7 intersection = (circ1.split([circ1a, circ1b])[0]
   8                 << circ2.split([circ2b, circ2a])[0])
   9 intersection.append(path.closepath())
  10
  11 union = (circ1.split([circ1a, circ1b])[1]
  12          << circ2.split([circ2b, circ2a])[1])
  13 union.append(path.closepath())
  14
  15 c = canvas.canvas()
  16 c.fill(union, [color.rgb.blue])
  17 c.fill(intersection, [color.rgb.red])
  18 c.stroke(circ1)
  19 c.stroke(circ2)
  20 c.writeEPSfile("circles")