IRIX 6.5 Applications 2004 May/SGI IRIX 6.5 Applications 2004 May.iso/dist/java3d.idb/usr/demos/java/j3d/programs/examples/OffScreenCanvas3D/OffScreenTest.java.z/OffScreenTest.java

Java Source | 2003-08-08 | 5.0 KB | 164 lines

/*
 *    @(#)OffScreenTest.java 1.13 02/10/21 13:46:49
 *
 * Copyright (c) 1996-2002 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:
 *
 * - Redistributions 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 AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THE 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 SOFTWARE,
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that Software is not designed,licensed or intended
 * for use in the design, construction, operation or maintenance of
 * any nuclear facility.
 */

import com.sun.j3d.utils.geometry.ColorCube;
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;

/**
 * OffScreenTest issues renderOffScreenBuffer from the postSwap callback
 * of the OnScreen canvas.
 */
public class OffScreenTest extends Applet {

    private SimpleUniverse u = null;

  public BranchGroup createSceneGraph(Raster drawRaster)
  {
    // Create the root of the branch graph
    BranchGroup objRoot = new BranchGroup();

    // spin object has composited transformation matrix
    Transform3D spin = new Transform3D();
    Transform3D tempspin = new Transform3D();

    spin.rotX(Math.PI/4.0d);
    tempspin.rotY(Math.PI/5.0d);
    spin.mul(tempspin);
    spin.setScale(0.7);
    spin.setTranslation(new Vector3d(-0.4, 0.3, 0.0));

    TransformGroup objTrans = new TransformGroup(spin);
    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
    Shape3D shape = new Shape3D(drawRaster);
    objRoot.addChild(shape);

    // Let Java 3D perform optimizations on this scene graph.
    objRoot.compile();

    return objRoot;
  }

  public OffScreenTest ()
  {
  }

    public void init() {
    setLayout(new BorderLayout());
    GraphicsConfiguration config =
        SimpleUniverse.getPreferredConfiguration();

    BufferedImage bImage = new BufferedImage(200, 200 ,
                         BufferedImage.TYPE_INT_ARGB);

    ImageComponent2D buffer =
        new ImageComponent2D(ImageComponent.FORMAT_RGBA, bImage);
    buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);

    Raster 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);

    // create the main scene graph
    BranchGroup scene = createSceneGraph(drawRaster);

    // create the on-screen canvas
    OnScreenCanvas3D d = new OnScreenCanvas3D(config, false);
    add("Center", d);

    // create a simple universe
    u = new SimpleUniverse(d);

    // This will move the ViewPlatform back a bit so the
    // objects in the scene can be viewed.
    u.getViewingPlatform().setNominalViewingTransform();

    // create an off Screen Canvas

    OffScreenCanvas3D c = new OffScreenCanvas3D(config, true, drawRaster);

    // set the offscreen to match the onscreen
    Screen3D sOn = d.getScreen3D();
    Screen3D sOff = c.getScreen3D();
    sOff.setSize(sOn.getSize());
    sOff.setPhysicalScreenWidth(sOn.getPhysicalScreenWidth());
    sOff.setPhysicalScreenHeight(sOn.getPhysicalScreenHeight());

    // attach the same view to the offscreen canvas
    View v = u.getViewer().getView();
    v.addCanvas3D(c);

    // tell onscreen about the offscreen so it knows to
    // render to the offscreen at postswap
    d.setOffScreenCanvas(c);

    u.addBranchGraph(scene);
    v.stopView();
    // Make sure that image are render completely
    // before grab it in postSwap().
    d.setImageReady();
    v.startView();

    }

    public void destroy() {
    u.cleanup();
    }


  public static void main(String argv[])
  {
    new MainFrame(new OffScreenTest(), 500, 500);
  }
}