Adding upstream version 1.0.2.upstream/1.0.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 93 insertions, 0 deletions

diff --git a/share/extensions/lindenmayer.py b/share/extensions/lindenmayer.py
new file mode 100755
index 0000000..7ff76e1
--- /dev/null
+++ b/share/extensions/lindenmayer.py
@@ -0,0 +1,93 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+import random
+import inkex
+from inkex import turtle as pturtle
+
+class Lindenmayer(inkex.GenerateExtension):
+    def add_arguments(self, pars):
+        pars.add_argument("--tab")
+        pars.add_argument("--order", type=int, default=3, help="number of iteration")
+        pars.add_argument("--langle", type=float, default=16.0, help="angle for turning left")
+        pars.add_argument("--rangle", type=float, default=16.0, help="angle for turning right")
+        pars.add_argument("--step", type=float, default=25.0, help="step size")
+        pars.add_argument("--randomizestep", type=float, default=0.0, help="randomize step")
+        pars.add_argument("--randomizeangle", type=float, default=0.0, help="randomize angle")
+        pars.add_argument("--axiom", default="++F", help="initial state of system")
+        pars.add_argument("--rules", default="F=FF-[-F+F+F]+[+F-F-F]", help="replacement rules")
+        self.stack = []
+        self.turtle = pturtle.pTurtle()
+
+    def iterate(self):
+        self.rules = dict([map((lambda s: s.strip()), i.split("=")) for i in self.options.rules.upper().split(";") if i.count("=") == 1])
+        string = self.__recurse(self.options.axiom.upper(), 0)
+        self.__compose_path(string)
+        return self.turtle.getPath()
+
+    def __compose_path(self, string):
+        self.turtle.pu()
+        point = self.svg.namedview.center
+        self.turtle.setpos(point)
+        self.turtle.pd()
+        for c in string:
+            if c in 'ABCDEF':
+                self.turtle.pd()
+                self.turtle.fd(self.options.step * (random.normalvariate(1.0, 0.01 * self.options.randomizestep)))
+            elif c in 'GHIJKL':
+                self.turtle.pu()
+                self.turtle.fd(self.options.step * (random.normalvariate(1.0, 0.01 * self.options.randomizestep)))
+            elif c == '+':
+                self.turtle.lt(self.options.langle * (random.normalvariate(1.0, 0.01 * self.options.randomizeangle)))
+            elif c == '-':
+                self.turtle.rt(self.options.rangle * (random.normalvariate(1.0, 0.01 * self.options.randomizeangle)))
+            elif c == '|':
+                self.turtle.lt(180)
+            elif c == '[':
+                self.stack.append([self.turtle.getpos(), self.turtle.getheading()])
+            elif c == ']':
+                self.turtle.pu()
+                pos, heading = self.stack.pop()
+                self.turtle.setpos(pos)
+                self.turtle.setheading(heading)
+
+    def __recurse(self, rule, level):
+        level_string = ''
+        for c in rule:
+            if level < self.options.order:
+                try:
+                    level_string = level_string + self.__recurse(self.rules[c], level + 1)
+                except KeyError:
+                    level_string = level_string + c
+            else:
+                level_string = level_string + c
+        return level_string
+
+    def generate(self):
+        self.options.step = self.svg.unittouu(str(self.options.step) + 'px')
+        sty = {'stroke-linejoin': 'miter', 'stroke-width': str(self.svg.unittouu('1px')),
+             'stroke-opacity': '1.0', 'fill-opacity': '1.0',
+             'stroke': '#000000', 'stroke-linecap': 'butt',
+             'fill': 'none'}
+        return inkex.PathElement(style=str(inkex.Style(sty)), d=self.iterate())
+
+
+if __name__ == '__main__':
+    Lindenmayer().run()