examples/connect.py

   1 from pyx import *
   2
   3 unit.set(uscale=3)
   4
   5 c = canvas.canvas()
   6
   7 textattrs = [text.halign.center, text.vshift.middlezero]
   8 A = c.text(0, 0, r"\bf A", textattrs)
   9 B = c.text(1, 0, r"\bf B", textattrs)
  10 C = c.text(1, 1, r"\bf C", textattrs)
  11 D = c.text(0, 1, r"\bf D", textattrs)
  12
  13 for X in [A, B, C, D]:
  14     c.stroke(X.bbox().enlarged(0.1).rect())
  15
  16 for X,Y in [[A, B], [B, C], [C, D], [D, A]]:
  17     c.stroke(connector.arc(X, Y, boxdists=0.25), [color.rgb.red, deco.earrow.normal])
  18
  19 c.stroke(connector.curve(D, B, boxdists=0.25, relangle1=45, relangle2=-45, relbulge=0.8),
  20          [color.rgb.blue, deco.earrow.normal])
  21
  22 c.writetofile("connect")