1 files changed, 59 insertions, 0 deletions
diff --git a/share/extensions/rtree.py b/share/extensions/rtree.py
new file mode 100755
index 000000000..8728ed7a3
--- /dev/null
+++ b/share/extensions/rtree.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python 
+'''
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+'''
+import inkex, simplestyle, pturtle, random
+
+def rtree(turtle, size, min):
+	if size < min:
+		return
+	turtle.fd(size)
+	turn = random.uniform(20, 40)
+	turtle.lt(turn)
+	rtree(turtle, size*random.uniform(0.5,0.9), min)
+	turtle.rt(turn)
+	turn = random.uniform(20, 40)
+	turtle.rt(turn)
+	rtree(turtle, size*random.uniform(0.5,0.9), min)
+	turtle.lt(turn)
+	turtle.bk(size)
+
+class RTreeTurtle(inkex.Effect):
+	def __init__(self):
+		inkex.Effect.__init__(self)
+		self.OptionParser.add_option("-s", "--size",
+						action="store", type="float", 
+						dest="size", default=100.0,
+						help="initial branch size")
+		self.OptionParser.add_option("-m", "--minimum",
+						action="store", type="float", 
+						dest="minimum", default=4.0,
+						help="minimum branch size")
+	def effect(self):
+		new = self.document.createElement('svg:path')
+		s = {'stroke-linejoin': 'miter', 'stroke-width': '1.0px', 
+			'stroke-opacity': '1.0', 'fill-opacity': '1.0', 
+			'stroke': '#000000', 'stroke-linecap': 'butt', 
+			'fill': 'none'}
+		new.setAttribute('style', simplestyle.formatStyle(s))
+		t = pturtle.pTurtle()
+		rtree(t, self.options.size, self.options.minimum)
+		new.setAttribute('d', t.getPath())
+		self.document.documentElement.appendChild(new)
+
+e = RTreeTurtle()
+e.affect()