此處理代碼的問題

Question

我要替換此綠色屏幕的像素。 只是不起作用...

def setup():
    size(852,480)

def draw():
    image1 = loadImage("l.jpg")
    image(image1,0,0,852,480)
    loadPixels()
    pixels1 = pixels[0:]

    image2 = loadImage("r.jpg")
    image(image2,0,0,852,480)
    loadPixels()
    pixels2 = pixels[0:]

    for i in range(0,width*480):
        r = red(pixels[i])
        g = green(pixels[i])
        b = blue(pixels[i])
        if g > 220:
            pixels[i] = pixels1[i]
        else:
            pixels[i] = pixels2[i]

Answer 1

根據文檔 ，每當調用loadPixels() ，都必須繼續調用updatePixels() 。