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今天使用Python的Turtle库画一幅五星红旗庆祝国庆。
turtle库最初来自于 Wally Feurzeig, Seymour Papert 和 Cynthia Solomon 于 1967 年所创造的 Logo 编程语言。使用海龟绘图可以编写重复执行简单动作的程序画出精细复杂的形状。 代码如下：
import turtleimport time
def draw__stars(tur, step, x, y, arg): """ 绘制五角星 :param tur: turtle object :param step: 五角星一条边的长度 :param x: 开始绘制五角星的起点x坐标 :param y: 开始绘制五角星的起点y坐标 :param arg: :return: """ tur.pencolor('yellow') tur.fillcolor('yellow') tur.up() tur.goto(x, y) tur.begin_fill() tur.down() tur.right(arg) tur.forward(step) tur.right(144) tur.forward(step) tur.right(144) tur.forward(step) tur.right(144) tur.forward(step) tur.right(144) tur.forward(step) tur.right(144) tur.end_fill()
def draw__flag(tur, wide, height): """ 绘制国旗的长方形形状 :param tur: turtle object :param wide: the width of the flag :param height: the height of the flag :return: None """ tur.pencolor('red') tur.fillcolor('red') tur.goto(- wide / 2, height / 2) tur.begin_fill() tur.forward(wide) tur.right(90) tur.forward(height) tur.right(90) tur.forward(wide) tur.right(90) tur.forward(height) tur.end_fill()
if __name__ == '__main__': """ main 函数 """ # tur = turtle.Turtle() turtle.screensize(canvwidth=3000, canvheight=2000, bg=None) # 绘制star的turtle对象 tur_star = turtle.Turtle() # 绘制flag的turtle对象 tur_flag = turtle.Turtle() tur_flag.speed(9) tur_star.speed(9) # 隐藏turtle对象 tur_star.hideturtle() tur_flag.hideturtle() # 间隔3秒，可以没有，这个是我调试时加上去的 time.sleep(3) # 绘制长方形 draw__flag(tur_flag, 630, 420) # 绘制五角星，在合适的位置进行绘制五角星 # 调用五次函数绘制五颗五角星 draw__stars(tur_star, step=60, x=-280, y=155, arg=0) draw__stars(tur_star, step=25, x=-182, y=177, arg=- 25) draw__stars(tur_star, step=25, x=-175, y=125, arg=41) draw__stars(tur_star, step=25, x=-208, y=79, arg=23) draw__stars(tur_star, step=25, x=-265, y=75, arg=48) # 使画面锁定 turtle.penup() turtle.goto(-150,-260) turtle.hideturtle() turtle.pendown() turtle.color('red') turtle.write('基算仿真祝大家国庆节快乐',font=(1000)) turtle.done()
运行效果如下：
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