1 files changed, 120 insertions, 0 deletions
diff --git a/share/extensions/inkex/turtle.py b/share/extensions/inkex/turtle.py
new file mode 100644
index 0000000..cee7dad
--- /dev/null
+++ b/share/extensions/inkex/turtle.py
@@ -0,0 +1,120 @@
+# 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 math
+import random
+
+
+class pTurtle(object):
+    """A Python path turtle"""
+
+    def __init__(self, home=(0, 0)):
+        self.__home = [home[0], home[1]]
+        self.__pos = self.__home[:]
+        self.__heading = -90
+        self.__path = ""
+        self.__draw = True
+        self.__new = True
+
+    def forward(self, mag):
+        self.setpos((self.__pos[0] + math.cos(math.radians(self.__heading)) * mag,
+                     self.__pos[1] + math.sin(math.radians(self.__heading)) * mag))
+
+    def backward(self, mag):
+        self.setpos((self.__pos[0] - math.cos(math.radians(self.__heading)) * mag,
+                     self.__pos[1] - math.sin(math.radians(self.__heading)) * mag))
+
+    def right(self, deg):
+        self.__heading -= deg
+
+    def left(self, deg):
+        self.__heading += deg
+
+    def penup(self):
+        self.__draw = False
+        self.__new = False
+
+    def pendown(self):
+        if not self.__draw:
+            self.__new = True
+        self.__draw = True
+
+    def pentoggle(self):
+        if self.__draw:
+            self.penup()
+        else:
+            self.pendown()
+
+    def home(self):
+        self.setpos(self.__home)
+
+    def clean(self):
+        self.__path = ''
+
+    def clear(self):
+        self.clean()
+        self.home()
+
+    def setpos(self, arg):
+        if self.__new:
+            self.__path += "M" + ",".join([str(i) for i in self.__pos])
+            self.__new = False
+        self.__pos = arg
+        if self.__draw:
+            self.__path += "L" + ",".join([str(i) for i in self.__pos])
+
+    def getpos(self):
+        return self.__pos[:]
+
+    def setheading(self, deg):
+        self.__heading = deg
+
+    def getheading(self):
+        return self.__heading
+
+    def sethome(self, arg):
+        self.__home = list(arg)
+
+    def getPath(self):
+        return self.__path
+
+    def rtree(self, size, minimum, pt=False):
+        if size < minimum:
+            return
+        self.fd(size)
+        turn = random.uniform(20, 40)
+        self.lt(turn)
+        self.rtree(size * random.uniform(0.5, 0.9), minimum, pt)
+        self.rt(turn)
+        turn = random.uniform(20, 40)
+        self.rt(turn)
+        self.rtree(size * random.uniform(0.5, 0.9), minimum, pt)
+        self.lt(turn)
+        if pt:
+            self.pu()
+        self.bk(size)
+        if pt:
+            self.pd()
+
+    fd = forward
+    bk = backward
+    rt = right
+    lt = left
+    pu = penup
+    pd = pendown