test/functional/test_canvastrafoclip.py

   1 #!/usr/bin/env python
   2 import sys; sys.path[:0] = ["../.."]
   3
   4 from pyx import *
   5
   6 trafo1 = trafo.rotate(45)
   7 trafo2 = trafo.translate(1, 1)
   8 clip = canvas.clip(path.rect(-1, -1, 2, 2))
   9 content = canvas.canvas()
  10 content.fill(path.rect(-2, -2, 2, 2), [color.rgb.red])
  11 content.fill(path.rect(-2, 0, 2, 2), [color.rgb.green])
  12 content.fill(path.rect(0, -2, 2, 2), [color.rgb.blue])
  13 content.fill(path.rect(0, 0, 2, 2), [color.rgb.black])
  14
  15 def apply1(*args):
  16     c = canvas.canvas(args)
  17     c.insert(content)
  18     return c
  19
  20 def apply2(*args):
  21     c = sub = canvas.canvas()
  22     for arg in reversed(args):
  23         sub = sub.insert(canvas.canvas([arg]))
  24     sub.insert(content)
  25     return c
  26
  27 c = canvas.canvas()
  28
  29 c.insert(apply1(clip, trafo1, trafo2), [trafo.translate(0, 0)])
  30 c.stroke(apply1(clip, trafo1, trafo2).bbox().rect(), [trafo.translate(0, 0)])
  31
  32 c.insert(apply2(clip, trafo1, trafo2), [trafo.translate(0, 5)])
  33 c.stroke(apply2(clip, trafo1, trafo2).bbox().rect(), [trafo.translate(0, 5)])
  34
  35 c.insert(apply1(clip, trafo2, trafo1), [trafo.translate(5, 0)])
  36 c.stroke(apply1(clip, trafo2, trafo1).bbox().rect(), [trafo.translate(5, 0)])
  37
  38 c.insert(apply2(clip, trafo2, trafo1), [trafo.translate(5, 5)])
  39 c.stroke(apply2(clip, trafo2, trafo1).bbox().rect(), [trafo.translate(5, 5)])
  40
  41 c.insert(apply1(trafo1, clip, trafo2), [trafo.translate(10, 0)])
  42 c.stroke(apply1(trafo1, clip, trafo2).bbox().rect(), [trafo.translate(10, 0)])
  43
  44 c.insert(apply2(trafo1, clip, trafo2), [trafo.translate(10, 5)])
  45 c.stroke(apply2(trafo1, clip, trafo2).bbox().rect(), [trafo.translate(10, 5)])
  46
  47 c.insert(apply1(trafo2, clip, trafo1), [trafo.translate(15, 0)])
  48 c.stroke(apply1(trafo2, clip, trafo1).bbox().rect(), [trafo.translate(15, 0)])
  49
  50 c.insert(apply2(trafo2, clip, trafo1), [trafo.translate(15, 5)])
  51 c.stroke(apply2(trafo2, clip, trafo1).bbox().rect(), [trafo.translate(15, 5)])
  52
  53 c.insert(apply1(trafo1, trafo2, clip), [trafo.translate(20, 0)])
  54 c.stroke(apply1(trafo1, trafo2, clip).bbox().rect(), [trafo.translate(20, 0)])
  55
  56 c.insert(apply2(trafo1, trafo2, clip), [trafo.translate(20, 5)])
  57 c.stroke(apply2(trafo1, trafo2, clip).bbox().rect(), [trafo.translate(20, 5)])
  58
  59 c.insert(apply1(trafo2, trafo1, clip), [trafo.translate(25, 0)])
  60 c.stroke(apply1(trafo2, trafo1, clip).bbox().rect(), [trafo.translate(25, 0)])
  61
  62 c.insert(apply2(trafo2, trafo1, clip), [trafo.translate(25, 5)])
  63 c.stroke(apply2(trafo2, trafo1, clip).bbox().rect(), [trafo.translate(25, 5)])
  64
  65 c.writeEPSfile()
  66 c.writePDFfile()
  67 c.writeSVGfile()