// **********************************************************************//// <copyright>////  BBN Technologies//  10 Moulton Street//  Cambridge, MA 02138//  (617) 873-8000////  Copyright (C) BBNT Solutions LLC. All rights reserved.//// </copyright>// **********************************************************************//// $Source: /cvs/distapps/openmap/src/j3d/com/bbn/openmap/tools/j3d/OM3DManager.java,v $// $RCSfile: OM3DManager.java,v $// $Revision: 1.2.2.2 $// $Date: 2005/08/11 21:03:15 $// $Author: dietrick $//// **********************************************************************package com.bbn.openmap.tools.j3d;import java.awt.*;import javax.media.j3d.*;import javax.vecmath.*;/** * An abstract 3D manager object, containing content, canvas, camera * and the universe. The canvase is the thing you add to the GUI to * see the 3D world. *  * @author dietrick */public abstract class OM3DManager implements OM3DConstants {    protected float scaleFactor = 1f;    /**     * The Universe for the scene.     */    protected UniverseManager universe = null;    /**     * The root branch group of worldly objects.     */    protected BranchGroup objRootBG = null;    /**     * The camera, the viewer's eye.     */    protected Camera cam = null;    /**     * The bounding sphere radius for the root branch group.     */    protected double boundsDimension = DEFAULT_BOUNDS_DIMENSION;    /**     * The Background to the universe.     */    protected Background background = new Background();    /**     */    protected Canvas3D canvas = null;    protected OM3DManager() {        init();    }    /**     * Set up the canvas and the universe.     */    protected void init() {        // Try to set a GraphicsConfiguration...        GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();        GraphicsDevice device = env.getDefaultScreenDevice();        GraphicsConfiguration config = device.getBestConfiguration(template);        canvas = new Canvas3D(config);        canvas.setSize(new Dimension(DEFAULT_DIMENSION, DEFAULT_DIMENSION));        objRootBG = new BranchGroup();        objRootBG.setCapability(Group.ALLOW_CHILDREN_EXTEND);        constructWorld(objRootBG);    }    /**     * Construct everything that we want in the basic test world     *      * @param worldBranchGroup Description of the Parameter     */    protected void constructWorld(BranchGroup worldBranchGroup) {        // create the basic universe        UniverseManager univ = new UniverseManager(worldBranchGroup);        cam = new Camera();        Vector3f loc = new Vector3f(0, 0, 0);        cam.setLocation(loc);        cam.setHeadLight(true);        cam.setCanvas(canvas);        univ.addCamera(cam);        universe = univ;    }    /**     * Get the Camera, which is controlling the viewer's perspective.     *      * @return The camera value     */    public Camera getCamera() {        return cam;    }    public Canvas3D getCanvas() {        return canvas;    }    /**     * Get the BranchGroup that represents the head of the world     * object tree.     *      * @return The world value     */    public BranchGroup getWorld() {        return objRootBG;    }    public void setScaleFactor(float sf) {        scaleFactor = sf;    }    public float getScaleFactor() {        return scaleFactor;    }    public void setBoundsDimension(double bd) {        boundsDimension = bd;    }    public double getBoundsDimension() {        return boundsDimension;    }    public VirtualUniverse getUniverse() {        return universe;    }    public void setSceneBackground(Background background) {        this.background = background;    }    public Background getSceneBackground() {        return background;    }}