From 2b954ff1fe88f35b59da6c6f6b82fde70274a6ef Mon Sep 17 00:00:00 2001
From: Michael Bien <mbien@fh-landshut.de>
Date: Sat, 27 Mar 2010 23:24:13 +0100
Subject: refactoring: renamed com.sun.opengl -> com.jogamp.opengl.
---
.../com/jogamp/opengl/util/awt/ImageUtil.java | 127 +++++++++++++++++++++
1 file changed, 127 insertions(+)
create mode 100755 src/jogl/classes/com/jogamp/opengl/util/awt/ImageUtil.java
(limited to 'src/jogl/classes/com/jogamp/opengl/util/awt/ImageUtil.java')
diff --git a/src/jogl/classes/com/jogamp/opengl/util/awt/ImageUtil.java b/src/jogl/classes/com/jogamp/opengl/util/awt/ImageUtil.java
new file mode 100755
index 000000000..a3139b16a
--- /dev/null
+++ b/src/jogl/classes/com/jogamp/opengl/util/awt/ImageUtil.java
@@ -0,0 +1,127 @@
+/*
+ * 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.jogamp.opengl.util.awt;
+
+import java.awt.*;
+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);
+ }
+ }
+
+ /**
+ * Creates a <code>BufferedImage</code> with a pixel format compatible with the graphics
+ * environment. The returned image can thus benefit from hardware accelerated operations
+ * in Java2D API.
+ *
+ * @param width The width of the image to be created
+ * @param height The height of the image to be created
+ *
+ * @return A instance of <code>BufferedImage</code> with a type compatible with the graphics card.
+ */
+ public static BufferedImage createCompatibleImage(int width, int height) {
+ GraphicsConfiguration configuration =
+ GraphicsEnvironment.getLocalGraphicsEnvironment().
+ getDefaultScreenDevice().getDefaultConfiguration();
+ return configuration.createCompatibleImage(width, height);
+ }
+
+ /**
+ * Creates a thumbnail from an image. A thumbnail is a scaled down version of the original picture.
+ * This method will retain the width to height ratio of the original picture and return a new
+ * instance of <code>BufferedImage</code>. The original picture is not modified.
+ *
+ * @param image The original image to sample down
+ * @param thumbWidth The width of the thumbnail to be created
+ *
+ * @throws IllegalArgumentException If thumbWidth is greater than image.getWidth()
+ *
+ * @return A thumbnail with the requested width or the original picture if thumbWidth = image.getWidth()
+ */
+ public static BufferedImage createThumbnail(BufferedImage image, int thumbWidth) {
+ // Thanks to Romain Guy for this utility
+ if (thumbWidth > image.getWidth()) {
+ throw new IllegalArgumentException("Thumbnail width must be greater than image width");
+ }
+
+ if (thumbWidth == image.getWidth()) {
+ return image;
+ }
+
+ float ratio = (float) image.getWidth() / (float) image.getHeight();
+ int width = image.getWidth();
+ BufferedImage thumb = image;
+
+ do {
+ width /= 2;
+ if (width < thumbWidth) {
+ width = thumbWidth;
+ }
+
+ BufferedImage temp = createCompatibleImage(width, (int) (width / ratio));
+ Graphics2D g2 = temp.createGraphics();
+ g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+ RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+ g2.drawImage(thumb, 0, 0, temp.getWidth(), temp.getHeight(), null);
+ g2.dispose();
+ thumb = temp;
+ } while (width != thumbWidth);
+
+ return thumb;
+ }
+
+}
--
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