Re: [JAVA3D] The example of Offscreen-Canvas3D which Onscreen-Canvas3D isn't u sed.

[Charmaine Lee]

Included in the attachment is a simple offscreen test that does not use
onscreen canvas3D.

-Charmaine Lee
Java3D Engineering Team


> MIME-Version: 1.0
> Date: Tue, 25 Jul 2000 19:11:23 +0900
> From: Norihito Hiruma <[EMAIL PROTECTED]>
> Subject: [JAVA3D] The example of Offscreen-Canvas3D which Onscreen-Canvas3D
isn't u sed.
> To: [EMAIL PROTECTED]
>
> Hello J3D developers!
>
> The example of Offscreen-Canvas3D which is in J3D 1.2 uses
> Onscreen-Canvas3D.
> But, I don't want to use Onscreen-Canvas3D.
> Could someone please give me the example of Offscreen-Canvas3D which
> Onscreen-Canvas3D isn't used.
>
> Thank you very much.
> Norix Hiruma
>
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/*
 *
 *    "@(#)SimpleOffScreenTest.java 1.1 99/11/17"
 *
 * Copyright (c) 1996-1998 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * 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.
 *
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

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

public class SimpleOffScreenTest extends Applet {

    static final int WIDTH = 200;
    static final int HEIGHT = 200;

    ImageComponent2D buffer;

    public SimpleOffScreenTest() {
        createOffScreenImage();
    }

    public void paint(Graphics g) {
        g.drawImage(buffer.getImage(), 0, 0, this);
    }

    void createOffScreenImage() {
        Canvas3D c = getOffScreenCanvas();

        SimpleUniverse u = new SimpleUniverse(c);
        u.getViewingPlatform().setNominalViewingTransform();
        BranchGroup bg = createSceneGraph();
        u.addBranchGraph(bg);

        createBufferImage();
        c.setOffScreenBuffer(buffer);
        c.renderOffScreenBuffer();
        c.waitForOffScreenRendering();
    }

    Canvas3D getOffScreenCanvas() {
        GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
        Canvas3D c = new Canvas3D(config, true);
        Screen3D scr = c.getScreen3D();
        scr.setSize(new Dimension(1280, 1024));
        scr.setPhysicalScreenWidth(0.36124);
        scr.setPhysicalScreenHeight(0.28899555);
        return c;
    }

    void createBufferImage() {
        BufferedImage offScreenImg = new BufferedImage(WIDTH, WIDTH ,
                                               BufferedImage.TYPE_INT_ARGB);
        buffer = new ImageComponent2D(ImageComponent.FORMAT_RGBA, offScreenImg);
        buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ);
    }

    BranchGroup createSceneGraph() {
        BranchGroup objRoot = new BranchGroup();
        objRoot.addChild(new ColorCube(0.4));
        return objRoot;
    }

    public static void main(String argv[]) {
        new MainFrame(new SimpleOffScreenTest(), WIDTH, HEIGHT);
    }
}