import TurtleDraw

angleChange = 1.0
lengthChange = 0.75

def makeTree(turtle, ang, length, depth):
    if depth == 0:
        return

    turtle.DrawForward(length)
    turtle.SaveState()
    turtle.Rotate(-ang)
    makeTree(turtle, ang*angleChange, length*lengthChange, depth-1)
    turtle.RecoverState()
    makeTree(turtle, ang*angleChange, length*lengthChange, depth-1)
    turtle.SaveState()
    turtle.Rotate(ang)
    makeTree(turtle, ang*angleChange, length*lengthChange, depth-1)
    turtle.RecoverState()
    turtle.SaveState()
    makeTree(turtle, ang*angleChange, length*lengthChange, depth-1)
    turtle.RecoverState()
    

tur = TurtleDraw.Turtle(200, 350)
makeTree(tur, 25, 30, 6)
del tur

TurtleDraw.run()