init

drawing_recursively.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+from turtle import Pen
+
+
+def draw_ornament(pen, scale=150):
+    if scale > 1:
+        for angle in range(0, 360, 90):
+            pen.setheading(angle)
+            back = pen.pos()
+            if scale <= 10:
+                pen.pd()
+            pen.forward(scale)
+            draw_ornament(pen, scale // 2)
+            pen.pu()
+            pen.setpos(back)
+
+def setup_pen():
+    pen = Pen()
+    pen.ht()
+    pen.pu()
+    pen.speed(0)
+    pen.screen.setup(1000, 900)
+    pen.screen.title("Watch me running")
+    pen.screen.bgcolor("white")
+    pen.screen.tracer(n=10) # draws only nth frame to speed up drawing
+    pen.color("blue")
+    pen.setpos(0, 0)
+    return pen
+
+if __name__ == '__main__':
+    pen = setup_pen()
+    try:
+        draw_ornament(pen)
+    except KeyboardInterrupt:
+        exit()
+    input('All done!\nPress Enter to quit')
+    exit()

turtle_tree.py

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+#!/usr/bin/env python3
+from turtle import Pen
+
+
+def draw_tree(pen, scale=50):
+    pen.color("brown")
+    for angle in range(int(pen.heading() - 80), int(pen.heading() + 60), 51):
+        pen.setheading(angle)
+        back = pen.pos()
+        pen.pd()
+        for _ in range(5):
+            pen.forward(scale)
+            pen.left(10)
+        if scale >= 10:
+            draw_tree(pen, scale // 2)
+        elif scale < 10:
+            draw_leaf(pen, scale)
+        else:
+            pass
+        pen.pu()
+        pen.setpos(back)
+            
+def draw_leaf(pen, scale=5):
+    back = pen.pos()
+    pen.color("green")
+    pen.pd()
+    factor_width = 1
+    factor_length = scale
+    for _ in range(20):
+        pen.forward(factor_length)
+        pen.begin_fill()
+        pen.circle(scale * factor_width)
+        pen.circle(-scale * factor_width)
+        pen.end_fill()
+        factor_width *= 0.8
+        factor_length *= 0.7
+    pen.setpos(back)
+    pen.color("brown")
+    
+    
+
+def setup_pen():
+    pen = Pen()
+    pen.ht()
+    pen.pu()
+    pen.setheading(90)
+    pen.speed(0)
+    pen.screen.setup(1000, 550)
+    pen.screen.title("Beautiful tree :)")
+    pen.screen.bgcolor("white")
+    pen.setpos(0, -240)
+    return pen
+
+if __name__ == '__main__':
+    pen = setup_pen()
+##    draw_leaf(pen, 50)
+    draw_tree(pen)
+    input('All done!\nPress Enter to quit')
+    exit()

umbrella.py

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+#!/usr/bin/env python3
+from turtle import Pen
+
+
+def draw_ornament(pen, scale=300):
+    if scale > 3:
+        pen.pd()
+        pen.forward(scale)
+        back = pen.pos()
+        for angle in range(int(pen.heading() - 75), int(pen.heading() + 76), 15):
+            pen.setheading(angle)
+            pen.forward(scale // 3)
+            draw_ornament(pen, scale // 5)
+            pen.setpos(back)
+
+def setup_pen():
+    pen = Pen()
+    pen.ht()
+    pen.pu()
+    pen.speed(0)
+    pen.screen.setup(1000, 900)
+    pen.screen.title("Watch me running")
+    pen.screen.bgcolor("white")
+    pen.screen.tracer(n=10) # draws only nth frame to speed up drawing
+    pen.color("blue")
+    pen.setpos(0, -450)
+    pen.setheading(90)
+    return pen
+
+if __name__ == '__main__':
+    pen = setup_pen()
+    try:
+        draw_ornament(pen)
+    except KeyboardInterrupt:
+        exit()
+    input('All done!\nPress Enter to quit')
+    exit()