python模拟水波纹，单击会画同心圆，用来模拟ripple

以下是部分代码预览:

''' 本程序模拟水波纹，单击会画同心圆，用来模拟ripple'''

from turtle import Turtle,Screen     # 导入海龟类
from random import randint
 
def draw(x,y):     
    radius = 10
    t = Turtle(visible = False)
    t.color(29,153,231)
    t.pensize(4)
    t.penup()
    t.speed(0)
    
if __name__ == "__main__":

    bg_index = 0                             
    screen = Screen()
    screen.title('水波纹模拟用circle画的圆环 by lixingqiu')     # 写上窗口标题
    screen.setup(800,600)        # 设定窗口大小
    screen.bgcolor('black')      # 背景颜色为黑
    screen.delay(0)
    screen.colormode(255)   
    
    screen.onclick(draw)
    screen.onclick(clear_draw,3)
    animate_screen()
    screen.mainloop()

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