pygame慢画炫彩圆圈.py

"""pygame慢画炫彩圆圈.py,本程序演示一只看不见的画笔在慢慢地画酷炫的圆圈,用到了三角正弦和余弦函数与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.angle = 0
        self.radius =radius
        self.screen = screen
        self.scr_width = screen.get_width()  # 屏幕宽度
        self.scr_height = screen.get_height()# 屏幕高度
        
    def move(self):
        self.x = int(self.scr_width//2 + self.radius *  math.cos(math.radians(self.angle)))
        self.y = int(self.scr_height//2 + self.radius *  math.sin(math.radians(self.angle)))
        pygame.draw.circle(self.screen,self.color,(self.x,self.y),20, 0) # 画圆点
        self.angle = self.angle + 1
        
    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("python慢画炫彩圆圈_pygame_作者:李兴球")
    pen  = Pen(100,(255,0,0),2,screen)
    clock = pygame.time.Clock()
    运行中 = True
    
    while 运行中:
        for event in pygame.event.get():
            if event.type==QUIT:运行中=False
        pen.move()
        pen.coloradd()
        pygame.display.update()      
        clock.tick(30)
        
    pygame.quit()

if __name__=="__main__":
    main()