科赫曲线绘制

递归思想：函数加分支 递归链条：线段的组合 递归基例：初始线段

#科赫雪花绘制小包裹 import turtle as tu def koch(size, n): if n == 0: tu.fd(size) else: for angle in [0, 60, -120, 60]: tu.left(angle) koch(size / 3, n - 1) def main(): tu.setup(800, 400) tu.penup() tu.goto(-300, -50) tu.pendown() tu.pensize(2) koch(600, 3) tu.hideturtle()

科赫雪花

#科赫雪花绘制小包裹 import turtle as tu def koch(size, n): if n == 0: tu.fd(size) else: for angle in [0, 60, -120, 60]: tu.left(angle) koch(size / 3, n - 1) def main(): tu.setup(600, 600) tu.penup() tu.goto(-200, 100) tu.pendown() tu.pensize(2) level = 3 koch(400, level) tu.right(120) koch(400, level) tu.right(120) koch(400, level) tu.hideturtle() main()

运行效果