"""
淡入淡出显示图形的两个函数,
注意,在显示的过程中没有进行事件检测
"""
import pygame
from time import sleep
from pygame.locals import *
def fade_in_image(screen,image):
"""淡入显示图像"""
for a in range(0,256):
image.set_alpha(a)
screen.fill((0,0,0))
screen.blit(image,(0,0))
pygame.display.update()
sleep(0.01)
def fade_out_image(screen,image):
"""淡出显示图像"""
for a in range(255,-1,-1):
image.set_alpha(a)
screen.fill((0,0,0))
screen.blit(image,(0,0))
pygame.display.update()
sleep(0.01)
if __name__ == "__main__":
screen = pygame.display.set_mode((480,360))
cover = pygame.image.load("封面.png").convert()
fade_in_image(screen,cover)
fade_out_image(screen,cover)
