test/functional/test_arrow.py

   1 #!/usr/bin/env python
   2 import sys; sys.path[:0] = ["../.."]
   3
   4 import pyx
   5 from pyx import *
   6 from pyx.path import *
   7 import math
   8
   9 def testarrow(c):
  10     c.stroke(path(moveto(10,20),
  11                 curveto(12,16,14,15,12,19),
  12                 rcurveto(-3,2,3,3,-2,4)),
  13              [deco.barrow.small, deco.earrow.normal])
  14
  15     c.stroke(path(arc(8,15,4,10,70)), [deco.barrow.small, deco.earrow.normal])
  16     c.stroke(path(arc(8,15,3,10,70)), [deco.barrow.small, deco.earrow.normal])
  17     c.stroke(path(arc(8,15,2,10,70)), [deco.barrow.small, deco.earrow.normal])
  18     c.stroke(path(arc(8,15,1,10,70)), [deco.barrow.small, deco.earrow.normal])
  19     c.stroke(path(arc(8,15,0.5,10,70)), [deco.barrow.small, deco.earrow.normal])
  20
  21     base = 2
  22
  23     c.stroke(path(moveto(5,10), rlineto(5,0)),
  24            [deco.barrow(size=base/math.sqrt(8)*unit.t_pt, constriction=None),
  25             deco.earrow.SMall])
  26     c.stroke(path(moveto(5,10.5), rlineto(5,0)),
  27            [deco.barrow(size=base/math.sqrt(4)*unit.t_pt, constriction=None),
  28             deco.earrow.Small])
  29     c.stroke(path(moveto(5,11), rlineto(5,0)),
  30            [deco.barrow(size=base/math.sqrt(2)*unit.t_pt, constriction=None),
  31             deco.earrow.small])
  32     c.stroke(path(moveto(5,11.5), rlineto(5,0)),
  33            [deco.barrow(size=base/math.sqrt(1)*unit.t_pt, constriction=None),
  34             deco.earrow.normal])
  35     c.stroke(path(moveto(5,12), rlineto(5,0)),
  36            [deco.barrow(size=base*math.sqrt(2)*unit.t_pt, constriction=None),
  37             deco.earrow.large])
  38     c.stroke(path(moveto(5,12.5), rlineto(5,0)),
  39            [deco.barrow(size=base*math.sqrt(4)*unit.t_pt, constriction=None),
  40             deco.earrow.Large])
  41     c.stroke(path(moveto(5,13), rlineto(5,0)),
  42            [deco.barrow(size=base*math.sqrt(8)*unit.t_pt, constriction=None),
  43             deco.earrow.LArge])
  44     c.stroke(path(moveto(5,13.5), rlineto(5,0)),
  45            [deco.barrow(size=base*math.sqrt(16)*unit.t_pt, constriction=None),
  46             deco.earrow.LARge])
  47
  48     lt = style.linewidth.THick
  49
  50     c.stroke(path(moveto(11,10), rlineto(5,0)),
  51            [lt,
  52             deco.barrow(size=base/math.sqrt(8)*unit.t_pt, constriction=None),
  53             deco.earrow.SMall])
  54     c.stroke(path(moveto(11,10.5), rlineto(5,0)),
  55            [lt,
  56             deco.barrow(size=base/math.sqrt(4)*unit.t_pt, constriction=None),
  57             deco.earrow.Small])
  58     c.stroke(path(moveto(11,11), rlineto(5,0)),
  59            [lt,
  60             deco.barrow(size=base/math.sqrt(2)*unit.t_pt, constriction=None),
  61             deco.earrow.small])
  62     c.stroke(path(moveto(11,11.5), rlineto(5,0)),
  63            [lt,
  64             deco.barrow(size=base/math.sqrt(1)*unit.t_pt, constriction=None),
  65             deco.earrow.normal])
  66     c.stroke(path(moveto(11,12), rlineto(5,0)),
  67            [lt,
  68             deco.barrow(size=base*math.sqrt(2)*unit.t_pt, constriction=None),
  69             deco.earrow.large])
  70     c.stroke(path(moveto(11,12.5), rlineto(5,0)),
  71            [lt,
  72             deco.barrow(size=base*math.sqrt(4)*unit.t_pt, constriction=None),
  73             deco.earrow.Large])
  74     c.stroke(path(moveto(11,13), rlineto(5,0)),
  75            [lt,
  76             deco.barrow(size=base*math.sqrt(8)*unit.t_pt, constriction=None),
  77             deco.earrow.LArge(attrs=[style.linestyle.dashed, color.rgb.green])])
  78     c.stroke(path(moveto(11,13.5), rlineto(5,0)),
  79            [lt,
  80             deco.barrow(size=base*math.sqrt(16)*unit.t_pt, constriction=None),
  81             deco.earrow.LARge(attrs=[color.rgb.red,
  82                                      deco.stroked([style.linejoin.round]),
  83                                      deco.filled([color.rgb.blue])])])
  84
  85
  86
  87 c=canvas.canvas()
  88 testarrow(c)
  89 c.writeEPSfile("test_arrow", paperformat="a4", rotated=0, fittosize=1)
  90 c.writePDFfile("test_arrow", paperformat="a4")
  91