First cut offscreen canvas examples

note NOT working, race condition occuring, however offscreen canvases
for GL2ES2 and Jogl pipelines provably working elsewhere

5 files changed, 534 insertions, 7 deletions

diff --git a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenCanvas3D.java b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenCanvas3D.java
index 913bc74..bc72301 100644
--- a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenCanvas3D.java
+++ b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenCanvas3D.java
@@ -71,16 +71,16 @@ class OffScreenCanvas3D extends Canvas3D {
         printing = true;
 
     BufferedImage bImage = new BufferedImage(
-                                200, 200 , BufferedImage.TYPE_INT_ARGB);
+                                200, 200 , BufferedImage.TYPE_3BYTE_BGR);
 
     ImageComponent2D buffer = new ImageComponent2D(
-                                ImageComponent.FORMAT_RGBA, bImage, true, true);
+                                ImageComponent.FORMAT_RGB, bImage, true, true);
     buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
 
     this.setOffScreenBuffer(buffer);
     this.renderOffScreenBuffer();
 
-    if (toWait) {
+   if (toWait) {
 	this.waitForOffScreenRendering();
 	drawOffScreenBuffer();
     }
@@ -99,7 +99,7 @@ class OffScreenCanvas3D extends Canvas3D {
 
     BufferedImage bImage = this.getOffScreenBuffer().getImage();
     ImageComponent2D newImageComponent = new ImageComponent2D(
-	    ImageComponent.FORMAT_RGBA, bImage, true, true);
+	    ImageComponent.FORMAT_RGB, bImage, true, true);
 
     drawRaster.setImage(newImageComponent);
   }
diff --git a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenTest.java b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenTest.java
index dbb841e..ecfee83 100644
--- a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenTest.java
+++ b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenTest.java
@@ -95,7 +95,7 @@ public class OffScreenTest extends javax.swing.JFrame {
 
 	//Create a raster 
 	BufferedImage bImage = new BufferedImage(200, 200 ,
-						 BufferedImage.TYPE_INT_ARGB);        
+						 BufferedImage.TYPE_4BYTE_ABGR);        
 	ImageComponent2D buffer =
 	    new ImageComponent2D(ImageComponent.FORMAT_RGBA, bImage, true, true);
 	buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
diff --git a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenTestGL2ES2.java b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenTestGL2ES2.java
new file mode 100644
index 0000000..b549781
--- /dev/null
+++ b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/OffScreenTestGL2ES2.java
@@ -0,0 +1,231 @@
+/*
+ * Copyright (c) 2016 JogAmp Community. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+package org.jdesktop.j3d.examples.offscreen_canvas3d;
+
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsEnvironment;
+import java.awt.image.BufferedImage;
+
+import org.jogamp.java3d.BranchGroup;
+import org.jogamp.java3d.GraphicsConfigTemplate3D;
+import org.jogamp.java3d.ImageComponent;
+import org.jogamp.java3d.ImageComponent2D;
+import org.jogamp.java3d.Raster;
+import org.jogamp.java3d.Screen3D;
+import org.jogamp.java3d.Shape3D;
+import org.jogamp.java3d.Transform3D;
+import org.jogamp.java3d.TransformGroup;
+import org.jogamp.java3d.View;
+import org.jogamp.java3d.utils.shader.Cube;
+import org.jogamp.java3d.utils.universe.SimpleUniverse;
+import org.jogamp.vecmath.Point3f;
+import org.jogamp.vecmath.Vector3d;
+
+/**
+ * OffScreenTest programs with no UI.
+ */
+public class OffScreenTestGL2ES2 extends javax.swing.JFrame
+{
+
+	private SimpleUniverse univ = null;
+	private BranchGroup scene = null;
+	private Raster drawRaster = null;
+
+	private BranchGroup createSceneGraph()
+	{
+		// Create the root of the branch graph
+		BranchGroup objRoot = new BranchGroup();
+
+		// trans object has composited transformation matrix
+		Transform3D trans = new Transform3D();
+		Transform3D rot = new Transform3D();
+
+		trans.rotX(Math.PI / 4.0d);
+		rot.rotY(Math.PI / 5.0d);
+		trans.mul(rot);
+		trans.setScale(0.7);
+		trans.setTranslation(new Vector3d(-0.4, 0.3, 0.0));
+
+		TransformGroup objTrans = new TransformGroup(trans);
+		objRoot.addChild(objTrans);
+
+		// Create a simple shape leaf node, add it to the scene graph.
+		// ColorCube is a Convenience Utility class
+		objTrans.addChild(new Cube(0.4));
+
+		//Create a raster 
+		BufferedImage bImage = new BufferedImage(200, 200, BufferedImage.TYPE_3BYTE_BGR);
+		ImageComponent2D buffer = new ImageComponent2D(ImageComponent.FORMAT_RGB, bImage, true, true);
+		buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
+
+		drawRaster = new Raster(new Point3f(0.0f, 0.0f, 0.0f), Raster.RASTER_COLOR, 0, 0, 200, 200, buffer, null);
+
+		drawRaster.setCapability(Raster.ALLOW_IMAGE_WRITE);
+		Shape3D shape = new Shape3D(drawRaster);
+		objRoot.addChild(shape);
+
+		// Let Java 3D perform optimizations on this scene graph.
+		objRoot.compile();
+
+		return objRoot;
+	}
+
+	private OnScreenCanvas3D createOnScreenCanvasAndUniverse()
+	{
+		// Get the preferred graphics configuration for the default screen
+		GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
+
+		// Create a Canvas3D using the preferred configuration
+		OnScreenCanvas3D onScrCanvas = new OnScreenCanvas3D(config, false);
+
+		// Create simple universe with view branch
+		univ = new SimpleUniverse(onScrCanvas);
+
+		// This will move the ViewPlatform back a bit so the
+		// objects in the scene can be viewed.
+		univ.getViewingPlatform().setNominalViewingTransform();
+
+		// Ensure at least 5 msec per frame (i.e., < 200Hz)
+		univ.getViewer().getView().setMinimumFrameCycleTime(5);
+
+		/*BranchGroup objRoot = new BranchGroup();
+		Transform3D trans = new Transform3D();
+		Transform3D rot = new Transform3D();
+		
+		trans.rotX(Math.PI/4.0d);
+		rot.rotY(Math.PI/5.0d);
+		trans.mul(rot);
+		trans.setScale(0.7);
+		trans.setTranslation(new Vector3d(-0.4, 0.3, 0.0));
+		
+		TransformGroup objTrans = new TransformGroup(trans);
+		objRoot.addChild(objTrans);
+		
+		// Create a simple shape leaf node, add it to the scene graph.
+		// ColorCube is a Convenience Utility class
+		objTrans.addChild(new Cube(0.4));
+		
+		univ.addBranchGraph(objRoot);*/
+
+		return onScrCanvas;
+	}
+
+	private OffScreenCanvas3D createOffScreenCanvas()
+	{
+		// request an offscreen Canvas3D with a single buffer configuration
+		GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();
+		template.setDoubleBuffer(GraphicsConfigTemplate3D.UNNECESSARY);
+		GraphicsConfiguration gc = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()
+				.getBestConfiguration(template);
+
+		// Create a offscreen Canvas3D using the single buffer configuration.
+		OffScreenCanvas3D offScrCanvas = new OffScreenCanvas3D(gc, true, drawRaster);
+
+		return offScrCanvas;
+	}
+
+	/**
+	 * Creates new form OffScreenTest
+	 */
+	public OffScreenTestGL2ES2()
+	{
+		// Initialize the GUI components
+		initComponents();
+
+		// Create the content branch and add it to the universe
+		scene = createSceneGraph();
+
+		// Create an OnScreenCanvas3D and SimpleUniverse; add canvas to drawing panel
+		OnScreenCanvas3D onScreenCanvas = createOnScreenCanvasAndUniverse();
+		drawingPanel.add(onScreenCanvas, java.awt.BorderLayout.CENTER);
+
+		// Creante an OffScreenCanvas3D
+		OffScreenCanvas3D offScreenCanvas = createOffScreenCanvas();
+
+		// set the offscreen to match the onscreen
+		Screen3D sOn = onScreenCanvas.getScreen3D();
+		Screen3D sOff = offScreenCanvas.getScreen3D();
+		sOff.setSize(sOn.getSize());
+		sOff.setPhysicalScreenWidth(sOn.getPhysicalScreenWidth());
+		sOff.setPhysicalScreenHeight(sOn.getPhysicalScreenHeight());
+
+		// attach the same view to the offscreen canvas
+		View view = univ.getViewer().getView();
+		view.addCanvas3D(offScreenCanvas);
+
+		// tell onscreen about the offscreen so it knows to
+		// render to the offscreen at postswap
+		onScreenCanvas.setOffScreenCanvas(offScreenCanvas);
+
+		univ.addBranchGraph(scene);
+
+		view.stopView();
+		// Make sure that image are render completely
+		// before grab it in postSwap().
+		onScreenCanvas.setImageReady();
+		view.startView();
+	}
+
+	// ----------------------------------------------------------------
+
+	/** This method is called from within the constructor to
+	 * initialize the form.
+	 * WARNING: Do NOT modify this code. The content of this method is
+	 * always regenerated by the Form Editor.
+	 */
+	// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
+	private void initComponents()
+	{
+		drawingPanel = new javax.swing.JPanel();
+
+		setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
+		setTitle("Window Title");
+		drawingPanel.setLayout(new java.awt.BorderLayout());
+
+		drawingPanel.setPreferredSize(new java.awt.Dimension(500, 500));
+		getContentPane().add(drawingPanel, java.awt.BorderLayout.CENTER);
+
+		pack();
+	}// </editor-fold>//GEN-END:initComponents
+
+	/**
+	 * @param args the command line arguments
+	 */
+	public static void main(String args[])
+	{
+		System.setProperty("sun.awt.noerasebackground", "true");
+		System.setProperty("j3d.rend", "jogl2es2");
+		System.setProperty("j3d.displaylist", "false");
+		java.awt.EventQueue.invokeLater(new Runnable() {
+			public void run()
+			{
+				new OffScreenTestGL2ES2().setVisible(true);
+			}
+		});
+	}
+
+	// Variables declaration - do not modify//GEN-BEGIN:variables
+	private javax.swing.JPanel drawingPanel;
+	// End of variables declaration//GEN-END:variables
+
+}
diff --git a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/PrintFromButton.java b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/PrintFromButton.java
index e53a094..3b5db8a 100644
--- a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/PrintFromButton.java
+++ b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/PrintFromButton.java
@@ -48,6 +48,9 @@ import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsEnvironment;
 import java.awt.image.BufferedImage;
 
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
 import javax.swing.JPopupMenu;
 
 import org.jogamp.java3d.BranchGroup;
@@ -98,9 +101,9 @@ public class PrintFromButton extends javax.swing.JFrame {
 
 	//Create a raster 
 	BufferedImage bImage = new BufferedImage(200, 200 ,
-						 BufferedImage.TYPE_INT_ARGB);        
+						 BufferedImage.TYPE_3BYTE_BGR);        
 	ImageComponent2D buffer =
-	    new ImageComponent2D(ImageComponent.FORMAT_RGBA, bImage, true, true);
+	    new ImageComponent2D(ImageComponent.FORMAT_RGB, bImage, true, true);
 	buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
 	
 	drawRaster = new Raster(new Point3f(0.0f, 0.0f, 0.0f),
@@ -245,6 +248,14 @@ public class PrintFromButton extends javax.swing.JFrame {
 
     private void myButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_myButtonActionPerformed
         offScreenCanvas.print(false);
+        
+        ImageIcon ic = new ImageIcon(offScreenCanvas.getOffScreenBuffer().getImage());
+        JFrame f = new JFrame("Output");
+        f.getContentPane().add(new JLabel(ic) );
+        f.setSize(200, 200);
+        f.setVisible(true);
+        
+        
     }//GEN-LAST:event_myButtonActionPerformed
 
     private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_exitMenuItemActionPerformed
diff --git a/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/PrintFromButtonGL2ES2.java b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/PrintFromButtonGL2ES2.java
new file mode 100644
index 0000000..5b1bcf5
--- /dev/null
+++ b/src/main/java/org/jdesktop/j3d/examples/offscreen_canvas3d/PrintFromButtonGL2ES2.java
@@ -0,0 +1,285 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2007 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, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+package org.jdesktop.j3d.examples.offscreen_canvas3d;
+
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsEnvironment;
+import java.awt.image.BufferedImage;
+
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPopupMenu;
+
+import org.jogamp.java3d.BranchGroup;
+import org.jogamp.java3d.GraphicsConfigTemplate3D;
+import org.jogamp.java3d.ImageComponent;
+import org.jogamp.java3d.ImageComponent2D;
+import org.jogamp.java3d.Raster;
+import org.jogamp.java3d.Screen3D;
+import org.jogamp.java3d.Shape3D;
+import org.jogamp.java3d.Transform3D;
+import org.jogamp.java3d.TransformGroup;
+import org.jogamp.java3d.View;
+import org.jogamp.java3d.utils.geometry.ColorCube;
+import org.jogamp.java3d.utils.universe.SimpleUniverse;
+import org.jogamp.vecmath.Point3f;
+import org.jogamp.vecmath.Vector3d;
+
+/**
+ * PrintFromButton programs with simple UI.
+ */
+public class PrintFromButtonGL2ES2 extends javax.swing.JFrame {
+
+    private SimpleUniverse univ = null;
+    private BranchGroup scene = null;
+    private Raster drawRaster = null;    
+    private OffScreenCanvas3D offScreenCanvas = null;
+
+    public BranchGroup createSceneGraph() {
+	// Create the root of the branch graph
+	BranchGroup objRoot = new BranchGroup();
+
+	// trans object has composited transformation matrix
+	Transform3D trans = new Transform3D();
+	Transform3D rot = new Transform3D();
+
+	trans.rotX(Math.PI/4.0d);
+	rot.rotY(Math.PI/5.0d);
+	trans.mul(rot);
+	trans.setScale(0.7);
+	trans.setTranslation(new Vector3d(-0.4, 0.3, 0.0));
+
+	TransformGroup objTrans = new TransformGroup(trans);
+	objRoot.addChild(objTrans);
+
+	// Create a simple shape leaf node, add it to the scene graph.
+	// ColorCube is a Convenience Utility class
+	objTrans.addChild(new ColorCube(0.4));
+
+	//Create a raster 
+	BufferedImage bImage = new BufferedImage(200, 200 ,
+						 BufferedImage.TYPE_3BYTE_BGR);        
+	ImageComponent2D buffer =
+	    new ImageComponent2D(ImageComponent.FORMAT_RGB, bImage, true, true);
+	buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
+	
+	drawRaster = new Raster(new Point3f(0.0f, 0.0f, 0.0f),
+				       Raster.RASTER_COLOR,
+				       0, 0, 200, 200, buffer, null);
+	
+	drawRaster.setCapability(Raster.ALLOW_IMAGE_WRITE);        
+	Shape3D shape = new Shape3D(drawRaster);
+	objRoot.addChild(shape);
+
+	// Let Java 3D perform optimizations on this scene graph.
+	objRoot.compile();
+
+	return objRoot;
+    }
+
+    private OnScreenCanvas3D createOnScreenCanvasAndUniverse() {
+        // Get the preferred graphics configuration for the default screen
+	GraphicsConfiguration config =
+	    SimpleUniverse.getPreferredConfiguration();
+
+        // Create a Canvas3D using the preferred configuration
+	OnScreenCanvas3D onScrCanvas = new OnScreenCanvas3D(config, false);
+
+        // Create simple universe with view branch
+	univ = new SimpleUniverse(onScrCanvas);
+
+	// This will move the ViewPlatform back a bit so the
+	// objects in the scene can be viewed.
+	univ.getViewingPlatform().setNominalViewingTransform();
+
+	// Ensure at least 5 msec per frame (i.e., < 200Hz)
+	univ.getViewer().getView().setMinimumFrameCycleTime(5);
+
+	return onScrCanvas;
+    }
+
+    private OffScreenCanvas3D createOffScreenCanvas() {
+	// request an offscreen Canvas3D with a single buffer configuration
+	GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();
+	template.setDoubleBuffer(GraphicsConfigTemplate3D.UNNECESSARY);
+	GraphicsConfiguration gc = 
+                GraphicsEnvironment.getLocalGraphicsEnvironment().
+                getDefaultScreenDevice().getBestConfiguration(template);
+
+        // Create a offscreen Canvas3D using the single buffer configuration.
+        OffScreenCanvas3D offScrCanvas = 
+                new OffScreenCanvas3D(gc, true, drawRaster);
+
+        return offScrCanvas;
+    }
+
+    /**
+     * Creates new form PrintFromButton
+     */
+    public PrintFromButtonGL2ES2() {
+        // Initialize the GUI components
+        JPopupMenu.setDefaultLightWeightPopupEnabled(false);
+        initComponents();
+
+        // Create the content branch and add it to the universe
+        scene = createSceneGraph();
+        
+        // Create an OnScreenCanvas3D and SimpleUniverse; add canvas to drawing panel
+        OnScreenCanvas3D onScreenCanvas = createOnScreenCanvasAndUniverse();
+        drawingPanel.add(onScreenCanvas, java.awt.BorderLayout.CENTER);	
+
+	// Creante an OffScreenCanvas3D
+        offScreenCanvas = createOffScreenCanvas();
+        
+	// set the offscreen to match the onscreen
+	Screen3D sOn = onScreenCanvas.getScreen3D();
+	Screen3D sOff = offScreenCanvas.getScreen3D();
+	sOff.setSize(sOn.getSize());
+	sOff.setPhysicalScreenWidth(sOn.getPhysicalScreenWidth());
+	sOff.setPhysicalScreenHeight(sOn.getPhysicalScreenHeight());
+	
+	// attach the same view to the offscreen canvas
+	View view = univ.getViewer().getView();
+	view.addCanvas3D(offScreenCanvas);
+	
+        univ.addBranchGraph(scene);
+    }
+
+    // ----------------------------------------------------------------
+    
+    /** This method is called from within the constructor to
+     * initialize the form.
+     * WARNING: Do NOT modify this code. The content of this method is
+     * always regenerated by the Form Editor.
+     */
+    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
+    private void initComponents() {
+        java.awt.GridBagConstraints gridBagConstraints;
+
+        guiPanel = new javax.swing.JPanel();
+        myButton = new javax.swing.JButton();
+        drawingPanel = new javax.swing.JPanel();
+        jMenuBar1 = new javax.swing.JMenuBar();
+        fileMenu = new javax.swing.JMenu();
+        exitMenuItem = new javax.swing.JMenuItem();
+
+        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
+        setTitle("Window Title");
+        guiPanel.setLayout(new java.awt.GridBagLayout());
+
+        myButton.setText("Print");
+        myButton.addActionListener(new java.awt.event.ActionListener() {
+            public void actionPerformed(java.awt.event.ActionEvent evt) {
+                myButtonActionPerformed(evt);
+            }
+        });
+
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
+        gridBagConstraints.insets = new java.awt.Insets(4, 4, 4, 4);
+        guiPanel.add(myButton, gridBagConstraints);
+
+        getContentPane().add(guiPanel, java.awt.BorderLayout.NORTH);
+
+        drawingPanel.setLayout(new java.awt.BorderLayout());
+
+        drawingPanel.setPreferredSize(new java.awt.Dimension(500, 500));
+        getContentPane().add(drawingPanel, java.awt.BorderLayout.CENTER);
+
+        fileMenu.setText("File");
+        exitMenuItem.setText("Exit");
+        exitMenuItem.addActionListener(new java.awt.event.ActionListener() {
+            public void actionPerformed(java.awt.event.ActionEvent evt) {
+                exitMenuItemActionPerformed(evt);
+            }
+        });
+
+        fileMenu.add(exitMenuItem);
+
+        jMenuBar1.add(fileMenu);
+
+        setJMenuBar(jMenuBar1);
+
+        pack();
+    }// </editor-fold>//GEN-END:initComponents
+
+    private void myButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_myButtonActionPerformed
+        offScreenCanvas.print(false);
+        
+        ImageIcon ic = new ImageIcon(offScreenCanvas.getOffScreenBuffer().getImage());
+        JFrame f = new JFrame("Output");
+        f.getContentPane().add(new JLabel(ic) );
+        f.setSize(200, 200);
+        f.setVisible(true);
+        
+        
+    }//GEN-LAST:event_myButtonActionPerformed
+
+    private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_exitMenuItemActionPerformed
+        System.exit(0);
+    }//GEN-LAST:event_exitMenuItemActionPerformed
+    
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String args[]) {System.setProperty("sun.awt.noerasebackground", "true"); 
+        java.awt.EventQueue.invokeLater(new Runnable() {
+            public void run() {
+                new PrintFromButtonGL2ES2().setVisible(true);
+            }
+        });
+    }
+    
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    private javax.swing.JPanel drawingPanel;
+    private javax.swing.JMenuItem exitMenuItem;
+    private javax.swing.JMenu fileMenu;
+    private javax.swing.JPanel guiPanel;
+    private javax.swing.JMenuBar jMenuBar1;
+    private javax.swing.JButton myButton;
+    // End of variables declaration//GEN-END:variables
+    
+}