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Dear All,

I am using NVDIA Quadro 980 XGL graphics card. I am trying to call the
quad buffer for stereo rendering through java3d.

I am facing two problems

1) When I am trying to render the stereo images in immediate mode I do
not get any results (even with the stereo flag is set to true). However
if I draw a grphic like a small color cube I get the proper result that
is stereo rendering happens.
I am not able to figure out why this is happening is it a bug in
Java3D?

If I uncomment the following lines in paint method then my programs
works fine.

//If the line below uncommented then this test program
//runs correctly
// _gc3D.draw(new ColorCube(0.00));

2) Once the stereo rendering is switched on I want to translate the
image when a Mouse Drag event occurs. But when I am calling repaint
with in the mouse drag method , my program is hangging.

I would be grateful if anyone can share there experince or shed some
light on these problems.

Thank you in advance

Regards
-Chintan

PS: If anyone is intereseted in looking at the code I am posting it
with this mail

Following is the code.

import java.awt.*;
import java.awt.image.*;
import java.awt.color.*;
import javax.vecmath.*;
import javax.media.j3d.*;
import com.sun.j3d.utils.universe.SimpleUniverse;
import javax.swing.event.*;
import java.awt.event.*;
import javax.media.j3d.*;
import javax.media.jai.*;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.j3d.utils.geometry.ColorCube;
import java.awt.image.renderable.*;
import java.io.*;
import javax.swing.*;
import java.awt.geom.AffineTransform;
import javax.media.j3d.Transform3D;
import javax.vecmath.Vector3d;

public class IDLTestJava3D extends Canvas3D implements MouseListener,
MouseMotionListener {

private GraphicsContext3D _gc3D;
private J3DGraphics2D _j3DG2D;
private BufferedImage _imageLeft;
private BufferedImage _imageRight;
private MouseEventHandler eventHandler=null;
private AffineTransform _aft = null;
private Transform3D _t3d = null;
int X;
int Y;
int dx;
int dy;

public IDLTestJava3D(GraphicsConfiguration config,
BufferedImage imageLeft,
BufferedImage imageRight)
{
super(config);
this.dx=0;
this.dy=0;

_imageLeft = imageLeft;
_imageRight = imageRight;

addMouseListener(this);
addMouseMotionListener(this);
//Make sure that stereo is enabled
setStereoEnable(true);
this._aft=AffineTransform.getTranslateInstance(0,0);
this._t3d = new Transform3D();
this.X=0;
this.Y=0;
this.dx=0;
this.dx=0;

//Stop the renderer, since we use immediate mode rendering.
stopRenderer();

// Create a simple scene and attach it to the virtual universe
SimpleUniverse universe = new SimpleUniverse(this);

// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.

universe.getViewingPlatform().setNominalViewingTransform();
}

public void paint(Graphics g)
{
super.paint(g);

if(_gc3D == null || _j3DG2D == null) {

setDoubleBufferEnable(false);

_gc3D = getGraphicsContext3D();
_gc3D.setBufferOverride(true);
_gc3D.setAppearance(new Appearance());
_gc3D.setBackground(new Background(new
Color3f(Color.black)));

}

_j3DG2D = getGraphics2D();
_gc3D.clear();
_j3DG2D.flush(true);

_gc3D.setModelTransform(this._t3d);

_gc3D.setStereoMode(GraphicsContext3D.STEREO_LEFT);

//If the line below uncommented then this test program
//runs correctly
// _gc3D.draw(new ColorCube(0.00));

_j3DG2D.drawAndFlushImage(_imageLeft, this.dx, this.dy,
null);

_gc3D.setStereoMode(GraphicsContext3D.STEREO_RIGHT);
//If the line below uncommented then this test program
//runs correctly
//_gc3D.draw(new ColorCube(0.0));

_j3DG2D.drawAndFlushImage(_imageRight, this.dx, this.dy,
null);

}

public void mouseClicked(MouseEvent e) {

}

public void mouseEntered(MouseEvent e) {

}
public void mouseExited(MouseEvent e) {

}

public void mousePressed(MouseEvent e) {

}

public void mouseReleased(MouseEvent e) {

}
public void mouseDragged(MouseEvent e) {
int X,Y,dx,dy;

X= e.getX();
Y= e.getY();

dx = X - this.X;
dy = Y - this.Y;
this.dx = dx;
this.dy = dy;

this._aft.translate(dx,dy);

this.X = X;
this.Y = Y;
repaint()

}

public void mouseMoved(MouseEvent e) {

}

public static void main(String[] argv)
{
if(argv.length != 2) {
System.out.println("Usage: java StereoCanvas
imageLeftFileName imageRightFileName");
}
GraphicsConfigTemplate3D template = new
GraphicsConfigTemplate3D();
template.setStereo(GraphicsConfigTemplate.REQUIRED) ;
GraphicsConfiguration config
=
GraphicsEnvironment.getLocalGraphicsEnvironment().

getDefaultScreenDevice().getBestConfiguration(template);
PlanarImage imageLeft = JAI.create("fileload", argv[0]);
PlanarImage imageRight = JAI.create("fileload", argv[1]);
IDLTestJava3D myCanvas3D =
new IDLTestJava3D(config,
imageLeft.getAsBufferedImage(),
imageRight.getAsBufferedImage());

JFrame jFrame = new JFrame();
jFrame.getContentPane().setLayout(new BorderLayout());

jFrame.getContentPane().add(myCanvas3D,
BorderLayout.CENTER);

jFrame.pack();
jFrame.setSize(200, 300);
jFrame.setVisible(true);
}
}