Question

我想得到一个由pygame显示中每个像素的RGBA代码组成的数组

我尝试过：

for i in range(SCREEN_WIDTH):
    for j in range(SCREEN_HEIGHT):
        Pixels.append(pygame.Surface.get_at((i, j)))

但是我收到一条错误消息，Surface.get_at对元组不起作用，所以我拆下了一组括号，然后它告诉我Surface.get_at对整数不起作用，所以我很困惑，如何获得所有像素的RGBA值？谢谢

编辑，好的，发表评论后，我发布了完整的可运行代码：

import pygame
pygame.init()
PPM = 15
SCREEN_WIDTH, SCREEN_HEIGHT = 640, 480
pos_X = SCREEN_WIDTH/PPM/3
pos_Y = SCREEN_HEIGHT/PPM/3
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
FPS = 24
TIME_STEP = 1.0 / FPS
running = True

lead_x = pos_X*PPM
lead_y = pos_Y*PPM

k = 0
Pixels = []
while running:
    screen.fill((255, 255, 255, 255))
    for event in pygame.event.get():
        if event.type == pygame.KEYDOWN and event.key == K_ESCAPE:
            running = False

    if k == 0:
        for i in range(SCREEN_WIDTH):
            for j in range(SCREEN_HEIGHT):
                Pixels.append(pygame.Surface.get_at((i, j)))

        k +=1

    pygame.draw.rect(screen, (128,128,128),  [lead_x, lead_y,50,50])

    pygame.display.update()
    pygame.display.flip() # Update the full display Surface to the screen
    pygame.time.Clock().tick(FPS)

pygame.quit()

我得到了这些确切的错误，仅此而已：

Exception has occurred: TypeError
descriptor 'get_at' for 'pygame.Surface' objects doesn't apply to 'tuple' object

Answer 1

.get_at是Method Objects的实例函数方法（请参见pygame.Surface）。因此，必须在pygame.Surface的实例上调用它。 screen是表示窗口的Surface对象。因此必须是：

~~Pixels.append(pygame.Surface.get_at((i, j)))~~

Pixels.append(screen.get_at((i, j)))

分别

Pixels.append(pygame.Surface.get_at(screen, (i, j)))

如何在PyGame中获取屏幕上每个像素的颜色

1 个答案: