貯藏子圖像數據

Question

所以我有以下代碼：

package animation; 

import java.awt.Graphics; 
import java.awt.Image; 
import java.awt.image.BufferedImage; 
import java.io.File; 
import java.io.IOException; 
import javax.imageio.ImageIO; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 

public class AnimTest 
{ 
public static void main(String[] args) 
{ 
    AnimTest test = new AnimTest(); 
    test.go(); 
} 

public void go() 
{ 
    JFrame frame = new JFrame(); 
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    MyDrawP drawP = new MyDrawP(); 
    frame.getContentPane().add(drawP); 
    frame.setSize(500,500); 
    frame.setVisible(true); 
} 
} 

class MyDrawP extends JPanel 
{ 

public void paintComponent(Graphics g) 
{ 
    super.paintComponent(g); 
    try { 

     BufferedImage bigImg = ImageIO.read(new File("C:/Users/scott/Desktop/Personal Work/Pixel Art/terrain.png")); 

     final int width = 64; 
     final int height = 64; 
     final int rows = 5; 
     final int cols = 16; 
     BufferedImage[][] sprites = new BufferedImage[rows][cols]; 

     int x = 0; 
     int y = 0; 

     for (int i = 0; i < rows; i++) 
     { 
      for (int j = 0; j < cols; j++) 
      { 
       sprites[i][j] = bigImg.getSubimage(i * width, j * height, width, height); 
       //g.drawImage(sprites[i][j], 5, 5, this); 
      } 
     } 
     //Image subImage = bigImg.getSubimage(x, y, width, height); 
     g.drawImage(sprites[0][0], 5, 5, this); 

    } catch (IOException e) { 
     e.printStackTrace(); 
    } 

} 
} 

生成以下錯誤：

Exception in thread "AWT-EventQueue-0" java.awt.image.RasterFormatException: (y +  height) is outside of Raster 
at sun.awt.image.ByteInterleavedRaster.createWritableChild(Unknown Source) 
at java.awt.image.BufferedImage.getSubimage(Unknown Source) 
at animation.MyDrawP.paintComponent(AnimTest.java:55) 
at javax.swing.JComponent.paint(Unknown Source) 
at javax.swing.JComponent.paintChildren(Unknown Source) 
at javax.swing.JComponent.paint(Unknown Source) 
at javax.swing.JComponent.paintChildren(Unknown Source) 
at javax.swing.JComponent.paint(Unknown Source) 
at javax.swing.JLayeredPane.paint(Unknown Source) 
at javax.swing.JComponent.paintChildren(Unknown Source) 
at javax.swing.JComponent.paintToOffscreen(Unknown Source) 
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source) 
at javax.swing.RepaintManager$PaintManager.paint(Unknown Source) 
at javax.swing.RepaintManager.paint(Unknown Source) 
at javax.swing.JComponent.paint(Unknown Source) 
at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source) 
at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) 
at sun.awt.SunGraphicsCallback.runComponents(Unknown Source) 
at java.awt.Container.paint(Unknown Source) 
at java.awt.Window.paint(Unknown Source) 
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source) 
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source) 
at javax.swing.RepaintManager.seqPaintDirtyRegions(Unknown Source) 
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source) 
at java.awt.event.InvocationEvent.dispatch(Unknown Source) 
at java.awt.EventQueue.dispatchEventImpl(Unknown Source) 
at java.awt.EventQueue.access$000(Unknown Source) 
at java.awt.EventQueue$1.run(Unknown Source) 
at java.awt.EventQueue$1.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue.dispatchEvent(Unknown Source) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.run(Unknown Source) 

現在，它說什麼是錯的55行，但我不明白爲什麼我的代碼會產生這種錯誤; RasterFormatException。

所以我想知道的是：

我的代碼是否正確？我試着去讓存儲我的主圖像文件的子圖像到所述陣列的二維數組，所以我可以隨意根據自己的陣列位置後調用。

謝謝。

Answer 1

java.awt.image.RasterFormatException: (y +  height) is outside of Raster 

也許你跑出來的圖像尺寸的？看看documentation。