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GitHub Repository: jackfrued/Python-100-Days
 Path: blob/master/Day01-15/code/Day01/flag.py
Views: 729
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"""

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用Python的turtle模块绘制国旗

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"""

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import turtle

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def draw_rectangle(x, y, width, height):

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    """绘制矩形"""

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    turtle.goto(x, y)

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    turtle.pencolor('red')

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    turtle.fillcolor('red')

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    turtle.begin_fill()

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    for i in range(2):

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        turtle.forward(width)

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        turtle.left(90)

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        turtle.forward(height)

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        turtle.left(90)

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    turtle.end_fill()

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def draw_star(x, y, radius):

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    """绘制五角星"""

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    turtle.setpos(x, y)

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    pos1 = turtle.pos()

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    turtle.circle(-radius, 72)

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    pos2 = turtle.pos()

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    turtle.circle(-radius, 72)

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    pos3 = turtle.pos()

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    turtle.circle(-radius, 72)

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    pos4 = turtle.pos()

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    turtle.circle(-radius, 72)

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    pos5 = turtle.pos()

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    turtle.color('yellow', 'yellow')

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    turtle.begin_fill()

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    turtle.goto(pos3)

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    turtle.goto(pos1)

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    turtle.goto(pos4)

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    turtle.goto(pos2)

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    turtle.goto(pos5)

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    turtle.end_fill()

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def main():

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    """主程序"""

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    turtle.speed(12)

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    turtle.penup()

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    x, y = -270, -180

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    # 画国旗主体

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    width, height = 540, 360

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    draw_rectangle(x, y, width, height)

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    # 画大星星

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    pice = 22

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    center_x, center_y = x + 5 * pice, y + height - pice * 5

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    turtle.goto(center_x, center_y)

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    turtle.left(90)

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    turtle.forward(pice * 3)

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    turtle.right(90)

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    draw_star(turtle.xcor(), turtle.ycor(), pice * 3)

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    x_poses, y_poses = [10, 12, 12, 10], [2, 4, 7, 9]

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    # 画小星星

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    for x_pos, y_pos in zip(x_poses, y_poses):

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        turtle.goto(x + x_pos * pice, y + height - y_pos * pice)

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        turtle.left(turtle.towards(center_x, center_y) - turtle.heading())

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        turtle.forward(pice)

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        turtle.right(90)

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        draw_star(turtle.xcor(), turtle.ycor(), pice)

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    # 隐藏海龟

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    turtle.ht()

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    # 显示绘图窗口

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    turtle.mainloop()

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if __name__ == '__main__':

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    main()

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