getSubImage外部光栅

Question

我有一个宽度为512px的图像。这段代码会抛出

RasterFormatException (x+width) is outside Raster 

我不明白什么即时做错了，当我检查栅格尺寸它说，它512

private void automaticStaticSpriteLoader(String loadedName, String imgLoc, BufferedImage[] biArray, int numberOfSpritesToLoad, int numberOfSpritesInImage, int percentComplete){ 
    try { 
     temporaryBigImg = ImageIO.read(getClass().getResource(imgLoc + ".png")); 
    } catch (IOException e) { 
     System.out.println(classNumber + " Error Loading Sprite Images. Shutting Down."); 
     e.printStackTrace(); 
    } 
    for(int i = 0; i<numberOfSpritesToLoad;i++){ 
     biArray[i] = temporaryBigImg.getSubimage(counterX, counterY, 32, 32); 
     System.out.println("CounterX = " + counterX + " CounterY = " + counterY + " Current Index = " + i); 
     if(counterX == 512){ 
      counterY += 32; 
      counterX = -32; 
     } 
     counterX+=32; 
    } 
} 

Answer 1

要更新counterX和counterY为时已晚。

你必须检查是否counterX >= 512，并最终增加counterY和重置你叫getSubImagecounterX之前。

代码，如在您的文章中将首先呼叫getSubImage(512, 0, 32, 32)，然后测试是否counterX == 512（但测试从未达到）。尝试打印您传入的实际值，然后您会看到错误。