new: animation

Author: Jakub Klinkovský

animation.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+
+import builtins
+import turtle as t
+import time
+import math
+
+import fractals._lib as _lib
+from fractals import *
+
+builtins.position = (-300, -250)
+
+_lib.init()
+
+for i in range(7):
+    t.clear()
+    t.penup()
+    t.setpos(position)
+    t.setheading(heading)
+    t.pendown()
+
+    arrowhead_curve(i, size)
+#    caesaro(i, size)
+#    dragon_curve(i, size)
+#    h_tree(i, size, angle=90, par=1/math.sqrt(2))
+#    h_tree(i, size, angle=85, par=0.69)
+#    h_tree(i, size, angle=45, par=1/math.sqrt(2))
+#    stochastic(i, size, angle=45, par=1/math.sqrt(2), factor=0.3)
+#    koch_antisnowflake(i, size)
+#    koch_curve(i, size)
+#    koch_snowflake(i, size)
+#    sierpinski_triangle(i, size)
+
+    t.update()
+    time.sleep(1)
+
+_lib.exit()

fractals/H-tree.py fractals/H_tree.pyfractals/H-tree.py renamed to fractals/H_tree.py

@@ -23,16 +23,17 @@ def h_tree(iteration, size, angle=90, par=1/math.sqrt(2)):
     t.left(angle)
     t.backward(size)
 
-_lib.init()    
+if __name__ == "__main__":
+    _lib.init()    
 
-## classic H-tree
-h_tree(iteration, size, angle=90, par=1/math.sqrt(2))
+    ## classic H-tree
+    h_tree(iteration, size, angle=90, par=1/math.sqrt(2))
 
-## different angle
-#h_tree(iteration, size, angle=85, par=0.69)
+    ## different angle
+#    h_tree(iteration, size, angle=85, par=0.69)
 
-## Pythagoras tree
-#builtins.size = 200
-#h_tree(iteration, size, angle=45, par=1/math.sqrt(2))
+    ## Pythagoras tree
+#    builtins.size = 200
+#    h_tree(iteration, size, angle=45, par=1/math.sqrt(2))
 
-_lib.exit()
+    _lib.exit()

fractals/H-tree_stochastic.py fractals/H_tree_stochastic.pyfractals/H-tree_stochastic.py renamed to fractals/H_tree_stochastic.py

@@ -26,6 +26,7 @@ def stochastic(iteration, size, angle, par, factor=0.3):
     t.left(angle2)
     t.backward(size2)
 
-_lib.init()
-stochastic(iteration, size, angle=45, par=1/math.sqrt(2), factor=0.3)
-_lib.exit()
+if __name__ == "__main__":
+    _lib.init()
+    stochastic(iteration, size, angle=45, par=1/math.sqrt(2), factor=0.3)
+    _lib.exit()

fractals/__init__.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+
+import os
+import sys
+
+# hack - enable importing from _this_ directory
+sys.path.append(os.path.dirname(__file__))
+
+from arrowhead_curve import *
+from caesaro_fractal import *
+from dragon_curve import *
+from dragon_curve_tiling import *
+from H_tree import *
+from H_tree_stochastic import *
+from koch_antisnowflake import *
+from koch_curve import *
+from koch_snowflake import *
+from sierpinski_triangle import *

fractals/dragon_curve_tiling.py

@@ -15,12 +15,16 @@
 def changeColor():
     t.pencolor(colors.pop())
 
-_lib.init()
-for heading in [0, 90, 180, 270]:
-    t.penup()
-    t.home()
-    t.setheading(heading)
-    changeColor()
-    t.pendown()
-    dragon_curve(iteration, size, swap=True)
-_lib.exit()
+def dragon_curve_tiling():
+    for heading in [0, 90, 180, 270]:
+        t.penup()
+        t.home()
+        t.setheading(heading)
+        changeColor()
+        t.pendown()
+        dragon_curve(iteration, size, swap=True)
+
+if __name__ == "__main__":
+    _lib.init()
+    dragon_curve_tiling()
+    _lib.exit()