1 files changed, 64 insertions, 0 deletions
diff --git a/src/classes/com/sun/opengl/util/ImageUtil.java b/src/classes/com/sun/opengl/util/ImageUtil.java
new file mode 100755
index 000000000..1ce77fecf
--- /dev/null
+++ b/src/classes/com/sun/opengl/util/ImageUtil.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package com.sun.opengl.util;
+
+import java.awt.image.*;
+
+/** Utilities for dealing with images. */
+
+public class ImageUtil {
+  private ImageUtil() {}
+
+  /** Flips the supplied BufferedImage vertically. This is often a
+      necessary conversion step to display a Java2D image correctly
+      with OpenGL and vice versa. */
+  public static void flipImageVertically(BufferedImage image) {
+    WritableRaster raster = image.getRaster();
+    Object scanline1 = null;
+    Object scanline2 = null;
+      
+    for (int i = 0; i < image.getHeight() / 2; i++) {
+      scanline1 = raster.getDataElements(0, i, image.getWidth(), 1, scanline1);
+      scanline2 = raster.getDataElements(0, image.getHeight() - i - 1, image.getWidth(), 1, scanline2);
+      raster.setDataElements(0, i, image.getWidth(), 1, scanline2);
+      raster.setDataElements(0, image.getHeight() - i - 1, image.getWidth(), 1, scanline1);
+    }
+  }
+}