[JAVA3D] one view - two screens

[Svein Tore Edvardsen]

  Hi

I'm trying to set up a view with to canvas3D attached which should
be showed in two screens (left and right).

My problem is that when I modify the view TransformGroup the objects in
the scene seems to be stretched in the x-direction as they move from
left to right.

I suspect that the problem can be that I create the two
Canvas3D with the same GraphicsConfiguration object...

Anybody who can see what I'm doing wrong?

Thanks in advance

Svein T. Edvardsen

Here is my code:

        GraphicsConfigTemplate3D tmpl = new GraphicsConfigTemplate3D();
        GraphicsEnvironment graphicsEnv =
GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice device = graphicsEnv.getDefaultScreenDevice();
        GraphicsConfiguration config = device.getBestConfiguration(tmpl);

        leftCanvas3D = new Canvas3D(config);
        Screen3D leftScreen = leftCanvas3D.getScreen3D();
        //set the physical width and height of the screen
        leftScreen.setPhysicalScreenWidth(physicalScreenWidth);
        leftScreen.setPhysicalScreenHeight(physicalScreenHeight);
        //set the center of coexistence to the center between the screens
        Transform3D leftTrackerBaseToImagePlateT3D = new Transform3D();
        Vector3d leftTranslateV3d = new Vector3d(physicalScreenWidth,
physicalScreenHeight/2 ,0);
        leftTrackerBaseToImagePlateT3D.set(leftTranslateV3d);

leftScreen.setTrackerBaseToImagePlate(leftTrackerBaseToImagePlateT3D);

        rightCanvas3D = new Canvas3D(config);
        Screen3D rightScreen = rightCanvas3D.getScreen3D();
        //set the physical width and height of the screen
        rightScreen.setPhysicalScreenWidth(physicalScreenWidth);
        rightScreen.setPhysicalScreenHeight(physicalScreenHeight);
        //set the center of coexistence to the center between the screens
        Transform3D rightTrackerBaseToImagePlateT3D = new Transform3D();
        Vector3d rightTranslateV3d = new Vector3d(0,
physicalScreenHeight/2 ,0);
        rightTrackerBaseToImagePlateT3D.set(rightTranslateV3d);

rightScreen.setTrackerBaseToImagePlate(rightTrackerBaseToImagePlateT3D);
        viewPlatform = new ViewPlatform();
        viewPlatform.setViewAttachPolicy(View.NOMINAL_SCREEN);

        viewT3D = new Transform3D();
        viewTG = new TransformGroup();
        /* set capabilities on view transformgroup */
        viewTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        viewTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);

        body = new PhysicalBody();
        env = new PhysicalEnvironment();

env.setCoexistenceCenterInPworldPolicy(View.NOMINAL_SCREEN);//default

        view = new View();
        //set up view for a room mounted system with multiple (two) screens
        view.setViewPolicy(View.SCREEN_VIEW);
        view.setWindowEyepointPolicy(View.RELATIVE_TO_COEXISTENCE);
        view.setWindowMovementPolicy(View.VIRTUAL_WORLD);
        view.setWindowResizePolicy(View.VIRTUAL_WORLD);
        view.setCoexistenceCenteringEnable(false);
        //set up the viewers eyes relative to the center of coexistence
        view.setLeftManualEyeInCoexistence(new
Point3d(-(eyeSeparation/2), 0.0, viewerDistanceFromScreen));
        view.setRightManualEyeInCoexistence(new Point3d(eyeSeparation/2,
0.0, viewerDistanceFromScreen));
        view.addCanvas3D(leftCanvas3D);
        view.addCanvas3D(rightCanvas3D);
        view.setBackClipDistance(200);
        view.setFrontClipDistance(0.1);
        view.setPhysicalBody(body);
        view.setPhysicalEnvironment(env);
        view.attachViewPlatform(viewPlatform);

        viewTG.setTransform(viewT3D);
        viewTG.addChild(viewPlatform);

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