1 #!/usr/bin/env python
2 '''
3 Copyright (C) 2005 Aaron Spike, aaron@ekips.org
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 '''
19 import inkex, simplestyle, pturtle, random
21 def rtree(turtle, size, min):
22 if size < min:
23 return
24 turtle.fd(size)
25 turn = random.uniform(20, 40)
26 turtle.lt(turn)
27 rtree(turtle, size*random.uniform(0.5,0.9), min)
28 turtle.rt(turn)
29 turn = random.uniform(20, 40)
30 turtle.rt(turn)
31 rtree(turtle, size*random.uniform(0.5,0.9), min)
32 turtle.lt(turn)
33 turtle.bk(size)
35 class RTreeTurtle(inkex.Effect):
36 def __init__(self):
37 inkex.Effect.__init__(self)
38 self.OptionParser.add_option("-s", "--size",
39 action="store", type="float",
40 dest="size", default=100.0,
41 help="initial branch size")
42 self.OptionParser.add_option("-m", "--minimum",
43 action="store", type="float",
44 dest="minimum", default=4.0,
45 help="minimum branch size")
46 def effect(self):
47 new = self.document.createElement('svg:path')
48 s = {'stroke-linejoin': 'miter', 'stroke-width': '1.0px',
49 'stroke-opacity': '1.0', 'fill-opacity': '1.0',
50 'stroke': '#000000', 'stroke-linecap': 'butt',
51 'fill': 'none'}
52 new.setAttribute('style', simplestyle.formatStyle(s))
53 t = pturtle.pTurtle()
54 rtree(t, self.options.size, self.options.minimum)
55 new.setAttribute('d', t.getPath())
56 self.document.documentElement.appendChild(new)
58 e = RTreeTurtle()
59 e.affect()