光柵格式異常（JAVA）

Question

我試圖使用像上看到另一個問題，一些代碼回答：https://stackoverflow.com/a/621849/1044984

在使用此我得到以下錯誤：

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 main.Grid.paintComponent(Grid.java:111) 
    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) 

下面是代碼與此錯誤：

try { 

      tileSheetBig = ImageIO.read(new File("sprites/tiles.png")); 
      charSheetBig = ImageIO.read(new File("sprites/player.png")); 

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

     final int tileWidth = 64; 
     final int tileHeight = 64; 
     final int tileRows = 1; 
     final int tileCols = 11; 
     tileSheet = new BufferedImage[tileRows * tileCols]; 

     for (int i = 0; i < tileRows; i++) { 
      for (int j = 0; j < tileCols; j++) { 
       tileSheet[(i * tileCols) + j] = tileSheetBig.getSubimage(i 
         * tileWidth, j * tileHeight, tileWidth, tileHeight); 
      } 
     } 

     final int charWidth = 16; 
     final int charHeight = 23; 
     final int charRows = 2; 
     final int charCols = 3; 
     charSheet = new BufferedImage[charRows * charCols]; 

     for (int i = 0; i < charRows; i++) { 
      for (int j = 0; j < charCols; j++) { 
       charSheet[(i * charCols) + j] = charSheetBig.getSubimage(i 
         * charWidth, j * charHeight, charWidth, charHeight); 
      } 
     } 

由於沒有多少是從設在回答我看不到這個問題可能是什麼的代碼改變。我試圖谷歌的錯誤，但沒有很多答案與我的問題有關。

Answer 1

即RasterFormatException是thrown通過getSubImage()當由[X，Y：X +寬度，Y +高度]指定的區域不在BufferedImage區域內含有。

檢查您的tiles.png圖片至少是704x64像素（寬* cols，高*行），同樣，player.png至少爲48x46像素。

編輯： 對不起，我沒有注意到它乍一看; player.png必須是32x69 px和tiles.png 64x704 px

編輯2： 這會修復您的代碼而不編輯精靈;對瓷磚做同樣的工作

final int charWidth = 64; 
final int charHeight = 64; 
final int charCols = 11; 
final int charRows = 1; 
for (int i = 0; i < charCols; i++) { 
    for (int j = 0; j < charRows; j++) { 
     charSheet[i * charRows + j] = charSheetBig 
      .getSubimage(i * charWidth, j * charHeight, charWidth, charHeight); 
    } 
}