pygame慢画正弦曲线sin.py

"""pygame慢画正弦曲线sin.py,本程序演示一只看不见的画笔在慢慢地画酷炫的正弦曲线,用到了三角正弦函数与draw的画圆命令。"""

__author__ = "李兴球"
__date__ = "2018年7月"
__company__ = "风火轮少儿编程"

import pygame
from pygame.locals import *
import math
import colorsys

class Pen():
    def __init__(self,radius,color,thickness,screen):
        self.color = color         # 笔颜色
        self.thickness = thickness # 笔迹宽度
        self.sw = screen.get_width()
        self.sh = screen.get_height()
        self.x = self.sw//2 - 180
        self.y = self.sh//2
        self.angle = 0
        self.radius =radius
        self.screen  = screen
    def setxy(self,angle):
        self.x = int(self.sw//2 +   angle)
        self.y = int(self.sh//2 -  100*math.sin(math.radians(angle)))
        pygame.draw.circle(self.screen,self.color,(self.x,self.y),10, 0) # 画圆点
         
    def coloradd(self):
        h,l,s, = colorsys.rgb_to_hls(self.color[0]/255,self.color[1]/255,self.color[2]/255)
        h =  h + 0.01
        r,g,b = colorsys.hls_to_rgb(h,l,s)
        self.color = (int(r*255),int(g*255),int(b*255))
        
def main():

    pygame.init()
    screenWidth,screenHeight=480,360
    screen = pygame.display.set_mode((screenWidth,screenHeight))
    pygame.display.set_caption("pygame慢画炫彩正弦曲线_作者:李兴球")

    pen  = Pen(100,(255,0,0),2,screen)
    clock = pygame.time.Clock()    
    
    for angle in range(-180,181):
        for event in pygame.event.get():
            pass
        pen.setxy(angle)
        pen.coloradd()
        pygame.display.update()      
        clock.tick(60)

    running = True 
    while running:        
        for event in pygame.event.get():
            if event.type==QUIT:running=False
        pygame.display.update()
        clock.tick(10)
    pygame.quit()
 

if __name__=="__main__":
    main()