Adding upstream version 1.2.2.upstream/1.2.2upstream

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

1 files changed, 129 insertions, 0 deletions

diff --git a/share/extensions/lindenmayer.py b/share/extensions/lindenmayer.py
new file mode 100755
index 0000000..04e896a
--- /dev/null
+++ b/share/extensions/lindenmayer.py
@@ -0,0 +1,129 @@
+#!/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()