manual/arrows.py

   1 #!/usr/bin/env python
   2 import sys
   3 sys.path[:0] = [".."]
   4 from pyx import *
   5
   6 text.set(mode="latex")
   7 text.preamble(r"\renewcommand{\familydefault}{\ttdefault}")
   8 c = canvas.canvas()
   9
  10 # positioning is quite ugly ... but it works at the moment
  11 x = 0
  12 y = 0
  13 dx = 6
  14 dy = -0.65
  15 length = 1.2
  16
  17 def drawdeco(name, showpath=0, default=0):
  18     global x,y
  19     p = path.path(path.moveto(x + 0.1, y+0.1 ),
  20                        path.rlineto(length/2.0, 0.3),
  21                        path.rlineto(length/2.0, -0.3))
  22     c.stroke(p, [style.linewidth.THIck,  eval("deco."+name)])
  23     if showpath:
  24         c.stroke(p, [style.linewidth.Thin, color.gray.white])
  25     if default:
  26         name = name + r"\rm\quad (default)"
  27     c.text(x + 1.5, y + 0.15, name, [text.size.footnotesize])
  28     y += dy
  29     if y < -16:
  30         y = 0
  31         x += dx
  32
  33 drawdeco("earrow.Small")
  34 drawdeco("earrow.small")
  35 drawdeco("earrow.normal")
  36 drawdeco("earrow.large")
  37 drawdeco("earrow.Large")
  38
  39 y += dy
  40
  41 drawdeco("barrow.normal")
  42
  43 y += dy
  44
  45 drawdeco("earrow.Large([deco.filled([color.rgb.red]), style.linewidth.normal])")
  46 drawdeco("earrow.normal(constriction=None)")
  47 drawdeco("earrow.Large([style.linejoin.round])")
  48 drawdeco("earrow.Large([deco.stroked.clear])")
  49
  50 c.writeEPSfile("arrows")