Python pygame实现图像基本变换的示例详解

import pygame

def showImg(img):
    pygame.init()
    rect = img.get_rect()
    screen = pygame.display.set_mode((rect.width, rect.height))
    while True:
        for e in pygame.event.get():
            if e.type==pygame.QUIT:
                pygame.quit()
                return
        screen.blit(img, rect)
        pygame.display.flip()


ball = pygame.image.load("intro_ball.gif")
showImg(ball)

import pygame.transform as pt
xFlip = pt.flip(ball, True, False)
yFlip = pt.flip(ball, False, True)
xyFlip = pt.flip(ball, True, True)

xScale = pt.scale_by(ball, (2,1))
yScale = pt.scale(ball, (111,222))

import time

pygame.init()

size = width, height = 640, 320
speed = [10, 0]

screen = pygame.display.set_mode(size)

ball = pygame.image.load("intro_ball.gif")
rect = ball.get_rect()

th = 0
while True:
    if pygame.QUIT in [e.type for e in pygame.event.get()]:
        break
    time.sleep(0.02)
    rect = rect.move(speed)
    if rect.right>width:
        speed = [10, 0]
        rect = ball.get_rect()
    if rect.bottom>height:
        speed[1] = -speed[1]
    speed[1] += 1
    th += 5
    screen.fill("black")
    screen.blit(pt.rotate(ball, th), rect)
    pygame.display.flip()

pygame.quit()