1 files changed, 0 insertions, 782 deletions
diff --git a/src/javax/media/j3d/BackgroundRetained.java b/src/javax/media/j3d/BackgroundRetained.java
deleted file mode 100644
index 847d8de..0000000
--- a/src/javax/media/j3d/BackgroundRetained.java
+++ /dev/null
@@ -1,782 +0,0 @@
-/*
- * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Sun designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Sun in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- */
-
-package javax.media.j3d;
-
-import java.util.ArrayList;
-
-import javax.vecmath.Color3f;
-
-
-/**
- * The Background leaf node defines either a solid background color
- * or a background image that is used to fill the window at the
- * beginning of each new frame.  It also specifies an application
- * region in which this background is active.
- */
-class BackgroundRetained extends LeafRetained {
-
-    static final int COLOR_CHANGED		= 0x00001;
-    static final int IMAGE_CHANGED		= 0x00002;
-    static final int GEOMETRY_CHANGED		= 0x00004;
-    static final int BOUNDS_CHANGED		= 0x00008;
-    static final int BOUNDINGLEAF_CHANGED	= 0x00010;
-    static final int IMAGE_SCALE_CHANGED        = 0x00020;
-    // Background color or image.  If non-null, the image overrides the
-    // color.
-    Color3f		color = new Color3f(0.0f, 0.0f, 0.0f);
-    ImageComponent2DRetained	image = null;
-    Texture2DRetained           texture = null;
-
-    // the image scale mode if image is used.
-    int imageScaleMode = Background.SCALE_NONE;
-
-    /**
-     * The Boundary object defining the lights's application region.
-     */
-    Bounds applicationRegion = null;
-
-    /**
-     * The bounding leaf reference
-     */
-    BoundingLeafRetained boundingLeaf = null;
-
-    /**
-     * Background geometry branch group
-     */
-    BranchGroup geometryBranch = null;
-
-    /**
-     * The transformed value of the applicationRegion.
-     */
-    Bounds transformedRegion = null;
-
-    /**
-     * The state structure used for Background Geometry
-     */
-    SetLiveState setLiveState = null;
-
-    /**
-     * The locale of this Background node since we don't have mirror object
-     *  when clearLive is called
-     * locale is set to null, we still want locale to have a
-     * non-null value, since renderingEnv structure may be using the
-     * locale
-     */
-    Locale cachedLocale = null;
-
-    // This is true when this background is referenced in an immediate mode context
-    boolean inImmCtx = false;
-
-// list of light nodes for background geometry
-ArrayList<LightRetained> lights = new ArrayList<LightRetained>();
-
-// list of fog nodes for background geometry
-ArrayList<FogRetained> fogs = new ArrayList<FogRetained>();
-
-// a list of background geometry atoms
-ArrayList<GeometryAtom> bgGeometryAtomList = new ArrayList<GeometryAtom>();
-
-// false is background geometry atoms list has changed
-boolean bgGeometryAtomListDirty = true;
-
-// an array of background geometry atoms
-GeometryAtom[] bgGeometryAtoms = null;
-
-    // Target threads to be notified when light changes
-    // Note, the rendering env structure only get notified
-    // when there is a bounds related change
-    final static int targetThreads = J3dThread.UPDATE_RENDERING_ENVIRONMENT |
-                                     J3dThread.UPDATE_RENDER;
-
-    // Is true, if the background is viewScoped
-    boolean isViewScoped = false;
-
-    BackgroundRetained () {
-        this.nodeType = NodeRetained.BACKGROUND;
-	localBounds = new BoundingBox((Bounds)null);
-    }
-
-    /**
-     * Initializes the background color to the specified color.
-     * This color is used
-     * if the image is null.
-     * @param color the new background color
-     */
-    final void initColor(Color3f color) {
-	this.color.set(color);
-    }
-
-
-    /**
-     * Sets the background color to the specified color.  This color is used
-     * if the image is null.
-     * @param color the new background color
-     */
-    final void setColor(Color3f color) {
-	initColor(color);
-	if (source.isLive()) {
-	    sendMessage(COLOR_CHANGED, new Color3f(color));
-	}
-    }
-
-    /**
-     * Initializes the background color to the specified color.
-     * This color is used
-     * if the image is null.
-     * @param r the red component of the background color
-     * @param g the green component of the background color
-     * @param b the blue component of the background color
-     */
-    final void initColor(float r, float g, float b) {
-	this.color.x = r;
-	this.color.y = g;
-	this.color.z = b;
-    }
-
-
-
-    /**
-     * Sets the background color to the specified color.  This color is used
-     * if the image is null.
-     * @param r the red component of the background color
-     * @param g the green component of the background color
-     * @param b the blue component of the background color
-     */
-    final void setColor(float r, float g, float b) {
-	setColor(new Color3f(r, g, b));
-    }
-
-
-    /**
-     * Retrieves the background color.
-     * @param color the vector that will receive the current background color
-     */
-    final void getColor(Color3f color) {
-	color.set(this.color);
-    }
-
-    /**
-     * Initialize the image scale mode to the specified mode
-     * @imageScaleMode the image scale mode to the used
-     */
-    final void initImageScaleMode(int imageScaleMode){
-	this.imageScaleMode = imageScaleMode;
-    }
-
-    /**
-     * Sets the image scale mode for this Background node.
-     * @param imageScaleMode the image scale mode
-     */
-    final void setImageScaleMode(int imageScaleMode){
-	initImageScaleMode(imageScaleMode);
-	if(source.isLive()){
-	    sendMessage(IMAGE_SCALE_CHANGED, new Integer(imageScaleMode));
-	}
-    }
-
-    /**
-     * gets the image scale mode for this Background node.
-     */
-    final int getImageScaleMode(){
-	return imageScaleMode;
-    }
-
-    /**
-     * Initializes the background image to the specified image.
-     * @param image new ImageCompoent2D object used as the background image
-     */
-    final void initImage(ImageComponent2D img) {
-        int texFormat;
-
-        if (img == null) {
-            image = null;
-            texture = null;
-            return;
-        }
-
-        if (img.retained != image ) {
-            image = (ImageComponent2DRetained) img.retained;
-            image.setEnforceNonPowerOfTwoSupport(true);
-            switch(image.getNumberOfComponents()) {
-                case 1:
-                    texFormat = Texture.INTENSITY;
-                    break;
-                case 2:
-                    texFormat = Texture.LUMINANCE_ALPHA;
-                    break;
-                case 3:
-                    texFormat = Texture.RGB;
-                    break;
-                case 4:
-                    texFormat = Texture.RGBA;
-                    break;
-                default:
-                    assert false;
-                    return;
-            }
-
-            Texture2D tex2D = new Texture2D(Texture.BASE_LEVEL, texFormat,
-                    img.getWidth(), img.getHeight());
-            texture = (Texture2DRetained) tex2D.retained;
-            // Background is special case of Raster.
-            texture.setUseAsRaster(true);
-            // Fix to issue 373 : ImageComponent.set(BufferedImage) ignored when used by Background
-            image.addUser(texture);
-            texture.initImage(0,img);
-        }
-    }
-
-    /**
-     * Sets the background image to the specified image.
-     * @param image new ImageCompoent3D object used as the background image
-     */
-    final void setImage(ImageComponent2D img) {
-	if (source.isLive()) {
-	    if (texture != null) {
-		texture.clearLive(refCount);
-	    }
-	}
-	initImage(img);
-        if (source.isLive()) {
-            if (texture != null) {
-                texture.setLive(inBackgroundGroup, refCount);
-            }
-
-            sendMessage(IMAGE_CHANGED,
-                    (texture != null ? texture.mirror : null));
-
-        }
-    }
-
-    /**
-     * Retrieves the background image.
-     * @return the current background image
-     */
-    final ImageComponent2D getImage() {
-        return (image == null ? null :
-		(ImageComponent2D)image.source);
-    }
-
-    /**
-     * Initializes the background geometry branch group to the specified branch.
-     * @param branch new branch group object used for background geometry
-     */
-    final void initGeometry(BranchGroup branch) {
-        geometryBranch = branch;
-    }
-
-
-    /**
-     * Sets the background geometry branch group to the specified branch.
-     * @param branch new branch group object used for background geometry
-     */
-    final void setGeometry(BranchGroup branch) {
-        int numMessages = 0;
-        int i;
-
-        if (source.isLive()) {
-	    J3dMessage m[];
-            if (geometryBranch != null)
-                numMessages+=2; // REMOVE_NODES, ORDERED_GROUP_REMOVED
-            if (branch != null)
-                numMessages+=2; // INSERT_NODES, ORDERED_GROUP_INSERTED
-            m = new J3dMessage[numMessages];
-            for (i=0; i<numMessages; i++) {
-                m[i] = new J3dMessage();
-            }
-            i = 0;
-            if (geometryBranch != null) {
-                clearGeometryBranch((BranchGroupRetained)geometryBranch.retained);
-                m[i].threads = (J3dThread.UPDATE_RENDER |
-				J3dThread.UPDATE_RENDERING_ENVIRONMENT);
-                m[i].type = J3dMessage.ORDERED_GROUP_REMOVED;
-                m[i].universe = universe;
-                m[i].args[0] = setLiveState.ogList.toArray();
-                m[i].args[1] = setLiveState.ogChildIdList.toArray();
-		m[i].args[3] = setLiveState.ogCIOList.toArray();
-		m[i].args[4] = setLiveState.ogCIOTableList.toArray();
-                i++;
-
-                m[i].threads = setLiveState.notifyThreads;
-                m[i].type = J3dMessage.REMOVE_NODES;
-                m[i].universe = universe;
-                m[i].args[0] = setLiveState.nodeList.toArray();
-                i++;
-
-            }
-            if (branch != null) {
-                setGeometryBranch((BranchGroupRetained)branch.retained);
-                m[i].threads = (J3dThread.UPDATE_RENDER |
-				J3dThread.UPDATE_RENDERING_ENVIRONMENT);
-                m[i].type = J3dMessage.ORDERED_GROUP_INSERTED;
-                m[i].universe = universe;
-                m[i].args[0] = setLiveState.ogList.toArray();
-                m[i].args[1] = setLiveState.ogChildIdList.toArray();
-		m[i].args[2] = setLiveState.ogOrderedIdList.toArray();
-		m[i].args[3] = setLiveState.ogCIOList.toArray();
-		m[i].args[4] = setLiveState.ogCIOTableList.toArray();
-                i++;
-
-                m[i].threads = setLiveState.notifyThreads;
-                m[i].type = J3dMessage.INSERT_NODES;
-                m[i].universe = universe;
-                m[i].args[0] = setLiveState.nodeList.toArray();
-            }
-            VirtualUniverse.mc.processMessage(m);
-	    // Free up memory
-	    setLiveState.reset(null);
-        }
-        initGeometry(branch);
-    }
-
-    /**
-     * Retrieves the background geometry branch group.
-     * @return the current background geometry branch group
-     */
-    final BranchGroup getGeometry() {
-        return geometryBranch;
-    }
-
-    /**
-     * Initializes the Background's application region.
-     * @param region a region that contains the Backgound's new application bounds
-     */
-    final void initApplicationBounds(Bounds region) {
-	if (region != null) {
-	    applicationRegion = (Bounds) region.clone();
-	} else {
-	    applicationRegion = null;
-	}
-    }
-
-    /**
-     * Set the Background's application region.
-     * @param region a region that contains the Backgound's new application bounds
-     */
-    final void setApplicationBounds(Bounds region) {
-	initApplicationBounds(region);
-	// Don't send the message if there is a valid boundingleaf
-	if (boundingLeaf == null) {
-	    J3dMessage createMessage = new J3dMessage();
-	    createMessage.threads = targetThreads |
-		J3dThread.UPDATE_RENDERING_ENVIRONMENT;
-	    createMessage.type = J3dMessage.BACKGROUND_CHANGED;
-	    createMessage.universe = universe;
-	    createMessage.args[0] = this;
-	    createMessage.args[1]= new Integer(BOUNDS_CHANGED);
-	    if (region != null)
-		createMessage.args[2] = region.clone();
-	    else
-		createMessage.args[2] = null;
-	    VirtualUniverse.mc.processMessage(createMessage);
-	}
-    }
-
-    /**
-     * Get the Backgound's application region.
-     * @return this Backgound's application region information
-     */
-    final Bounds getApplicationBounds() {
-	return (applicationRegion != null ?  (Bounds) applicationRegion.clone() : null);
-    }
-
-    /**
-     * Initializes the Background's application region
-     * to the specified Leaf node.
-     */
-    void initApplicationBoundingLeaf(BoundingLeaf region) {
-	if (region != null) {
-	    boundingLeaf = (BoundingLeafRetained)region.retained;
-	} else {
-	    boundingLeaf = null;
-	}
-    }
-
-    /**
-     * Set the Background's application region to the specified Leaf node.
-     */
-    void setApplicationBoundingLeaf(BoundingLeaf region) {
-	if (boundingLeaf != null)
-	    boundingLeaf.mirrorBoundingLeaf.removeUser(this);
-
-	if (region != null) {
-	    boundingLeaf = (BoundingLeafRetained)region.retained;
-	    boundingLeaf.mirrorBoundingLeaf.addUser(this);
-	} else {
-	    boundingLeaf = null;
-	}
-	J3dMessage createMessage = new J3dMessage();
-	createMessage.threads = targetThreads |
-	    J3dThread.UPDATE_RENDERING_ENVIRONMENT;
-	createMessage.type = J3dMessage.BACKGROUND_CHANGED;
-	createMessage.universe = universe;
-	createMessage.args[0] = this;
-	createMessage.args[1]= new Integer(BOUNDINGLEAF_CHANGED);
-	if (boundingLeaf != null) {
-	    createMessage.args[2] = boundingLeaf.mirrorBoundingLeaf;
-	    createMessage.args[3] = null;
-	} else {
-	    createMessage.args[2] = null;
-	    if (applicationRegion != null)
-		createMessage.args[3] = applicationRegion.clone();
-	    else
-		createMessage.args[3] = null;
-	}
-	VirtualUniverse.mc.processMessage(createMessage);
-    }
-
-
-    /**
-     * Get the Background's application region
-     */
-    BoundingLeaf getApplicationBoundingLeaf() {
-	return (boundingLeaf != null ?
-		(BoundingLeaf)boundingLeaf.source : null);
-    }
-
-    /**
-     * This sets the immedate mode context flag
-     */
-    void setInImmCtx(boolean inCtx) {
-        inImmCtx = inCtx;
-    }
-
-    /**
-     * This gets the immedate mode context flag
-     */
-    boolean getInImmCtx() {
-        return (inImmCtx);
-    }
-
-    void setGeometryBranch(BranchGroupRetained branch) {
-        setLiveState.reset(locale);
-        setLiveState.inBackgroundGroup = true;
-
-        setLiveState.geometryBackground = this;
-        setLiveState.currentTransforms[0] = new Transform3D[2];
-        setLiveState.currentTransforms[0][0] = new Transform3D();
-        setLiveState.currentTransforms[0][1] = new Transform3D();
-	setLiveState.currentTransformsIndex[0] = new int[2];
-	setLiveState.currentTransformsIndex[0][0] = 0;
-	setLiveState.currentTransformsIndex[0][1] = 0;
-
-	setLiveState.localToVworld = setLiveState.currentTransforms;
-	setLiveState.localToVworldIndex = setLiveState.currentTransformsIndex;
-
-	setLiveState.branchGroupPaths = new ArrayList<BranchGroupRetained[]>();
-	setLiveState.branchGroupPaths.add(new BranchGroupRetained[0]);
-
-	setLiveState.orderedPaths = new ArrayList<OrderedPath>(1);
-	setLiveState.orderedPaths.add(new OrderedPath());
-
-	setLiveState.switchStates = new ArrayList<SwitchState>(1);
-	setLiveState.switchStates.add(new SwitchState(false));
-
-	branch.setLive(setLiveState);
-
-
-    }
-
-    void clearGeometryBranch(BranchGroupRetained branch) {
-        setLiveState.reset(locale);
-        setLiveState.inBackgroundGroup = true;
-        setLiveState.geometryBackground = this;
-        branch.clearLive(setLiveState);
-        branch.setParent(null);
-        branch.setLocale(null);
-
-    }
-
-    /**
-     * This setLive routine first calls the superclass's method, then
-     * it adds itself to the list of lights
-     */
-    @Override
-    void setLive(SetLiveState s) {
-	super.doSetLive(s);
-
-        if (inImmCtx) {
-           throw new IllegalSharingException(
-				J3dI18N.getString("BackgroundRetained1"));
-        }
-        if (inBackgroundGroup) {
-            throw new
-              IllegalSceneGraphException(J3dI18N.getString("BackgroundRetained5"));
-        }
-
-	if (inSharedGroup) {
-	    throw new
-		IllegalSharingException(J3dI18N.getString("BackgroundRetained6"));
-	}
-
-
-        if (geometryBranch != null) {
-            BranchGroupRetained branch =
-                (BranchGroupRetained)geometryBranch.retained;
-            if (branch.inBackgroundGroup == true)
-               throw new IllegalSharingException(
-				J3dI18N.getString("BackgroundRetained0"));
-
-            if (branch.parent != null)
-               throw new IllegalSharingException(
-				J3dI18N.getString("BackgroundRetained3"));
-
-            if (branch.locale != null)
-               throw new IllegalSharingException(
-				J3dI18N.getString("BackgroundRetained4"));
-
-	    if (setLiveState == null) {
-	   	setLiveState = new SetLiveState(universe);
-		setLiveState.universe = universe;
-	    }
-            setGeometryBranch((BranchGroupRetained)geometryBranch.retained);
-	    // add background geometry nodes to setLiveState's nodeList
-            s.nodeList.addAll(setLiveState.nodeList);
-	    s.notifyThreads |= setLiveState.notifyThreads;
-	    s.ogList.addAll(setLiveState.ogList);
-	    s.ogChildIdList.addAll(setLiveState.ogChildIdList);
-	    s.ogOrderedIdList.addAll(setLiveState.ogOrderedIdList);
-	    // Free up memory.
-            setLiveState.reset(null);
-        }
-
-	if ((s.viewScopedNodeList != null) && (s.viewLists != null)) {
-	    s.viewScopedNodeList.add(this);
-	    s.scopedNodesViewList.add(s.viewLists.get(0));
-	} else {
-	    s.nodeList.add(this);
-	}
-	// System.err.println("bkg.setlive nodeList " + s.nodeList);
-
-        // process switch leaf
-        if (s.switchTargets != null && s.switchTargets[0] != null) {
-            s.switchTargets[0].addNode(this, Targets.ENV_TARGETS);
-        }
-	switchState = s.switchStates.get(0);
-
-	// Initialize some mirror values
-	if (boundingLeaf != null) {
-	    transformedRegion = boundingLeaf.mirrorBoundingLeaf.transformedRegion;
-	}
-	else { // Evaluate applicationRegion if not null
-	    if (applicationRegion != null) {
-		transformedRegion = (Bounds)applicationRegion.clone();
-		transformedRegion.transform(
-					applicationRegion,
-					getLastLocalToVworld());
-	    }
-	    else {
-		transformedRegion = null;
-	    }
-
-	}
-	cachedLocale = s.locale;
-
-        // add this node to the transform target
-        if (s.transformTargets != null && s.transformTargets[0] != null) {
-            s.transformTargets[0].addNode(this, Targets.ENV_TARGETS);
-	    s.notifyThreads |= J3dThread.UPDATE_TRANSFORM;
-        }
-
-	s.notifyThreads |= J3dThread.UPDATE_RENDERING_ENVIRONMENT|
-	    J3dThread.UPDATE_RENDER;
-
-	if (texture != null) {
-	    texture.setLive(inBackgroundGroup, refCount);
-	}
-	super.markAsLive();
-
-    }
-
-    /**
-     * This clearLive routine first calls the superclass's method, then
-     * it removes itself to the list of lights
-     */
-    @Override
-    void clearLive(SetLiveState s) {
-        super.clearLive(s);
-	if ((s.viewScopedNodeList != null) && (s.viewLists != null)) {
-	    s.viewScopedNodeList.add(this);
-	    s.scopedNodesViewList.add(s.viewLists.get(0));
-	} else {
-	    s.nodeList.add(this);
-	}
-        if (s.transformTargets != null && s.transformTargets[0] != null) {
-            s.transformTargets[0].addNode(this, Targets.ENV_TARGETS);
-	    s.notifyThreads |= J3dThread.UPDATE_TRANSFORM;
-        }
-
-        if (s.switchTargets != null && s.switchTargets[0] != null) {
-            s.switchTargets[0].addNode(this, Targets.ENV_TARGETS);
-        }
-
-        if (geometryBranch != null) {
-            BranchGroupRetained branch = (BranchGroupRetained)geometryBranch.retained;
-            clearGeometryBranch(branch);
-            // add background geometry nodes to setLiveState's nodeList
-            s.nodeList.addAll(setLiveState.nodeList);
-            s.ogList.addAll(setLiveState.ogList);
-            s.ogChildIdList.addAll(setLiveState.ogChildIdList);
-	    s.notifyThreads |= setLiveState.notifyThreads;
-	    // Free up memory.
-	    setLiveState.reset(null);
-            lights.clear();
-            fogs.clear();
-        }
-
-	if (texture != null) {
-	    texture.clearLive(refCount);
-	}
-
-	s.notifyThreads |= J3dThread.UPDATE_RENDERING_ENVIRONMENT|
-	    J3dThread.UPDATE_RENDER;
-    }
-
-    // The update Object function.
-    synchronized void updateImmediateMirrorObject(Object[] objs) {
-	int component = ((Integer)objs[1]).intValue();
-	// If initialization
-
-	// Bounds message only sent when boundingleaf is null
-	if  ((component & BOUNDS_CHANGED) != 0) {
-	    if (objs[2] != null) {
-		transformedRegion = ((Bounds) objs[2]).copy(transformedRegion);
-		transformedRegion.transform(
-			(Bounds) objs[2], getCurrentLocalToVworld());
-	    }
-	    else {
-		transformedRegion = null;
-	    }
-	}
-	else if  ((component & BOUNDINGLEAF_CHANGED) != 0) {
-	    if (objs[2] != null) {
-		transformedRegion = ((BoundingLeafRetained)objs[2]).transformedRegion;
-	    }
-	    else { // Evaluate applicationRegion if not null
-		Bounds appRegion = (Bounds)objs[3];
-		if (appRegion != null) {
-		    transformedRegion = appRegion.copy(transformedRegion);
-		    transformedRegion.transform(
-			appRegion, getCurrentLocalToVworld());
-		}
-		else {
-		    transformedRegion = null;
-		}
-
-	    }
-	}
-
-    }
-
-    /** Note: This routine will only be called
-     * to  update the object's
-     * transformed region
-     */
-    @Override
-    void updateBoundingLeaf() {
-        if (boundingLeaf != null &&
-		boundingLeaf.mirrorBoundingLeaf.switchState.currentSwitchOn) {
-            transformedRegion =
-                        boundingLeaf.mirrorBoundingLeaf.transformedRegion;
-        } else { // Evaluate applicationRegion if not null
-            if (applicationRegion != null) {
-		transformedRegion = applicationRegion.copy(transformedRegion);
-                transformedRegion.transform(
-			applicationRegion, getCurrentLocalToVworld());
-            } else {
-                transformedRegion = null;
-            }
-        }
-    }
-
-    void updateImmediateTransformChange() {
-        // If bounding leaf is null, tranform the bounds object
-        if (boundingLeaf == null) {
-            if (applicationRegion != null) {
-		transformedRegion = applicationRegion.copy(transformedRegion);
-                transformedRegion.transform(
-			applicationRegion, getCurrentLocalToVworld());
-            }
-        }
-    }
-
-
-    final void sendMessage(int attrMask, Object attr) {
-	J3dMessage createMessage = new J3dMessage();
-	createMessage.threads = targetThreads;
-	createMessage.universe = universe;
-	createMessage.type = J3dMessage.BACKGROUND_CHANGED;
-	createMessage.args[0] = this;
-	createMessage.args[1]= new Integer(attrMask);
-	createMessage.args[2] = attr;
-	VirtualUniverse.mc.processMessage(createMessage);
-    }
-
-void addBgGeometryAtomList(GeometryAtom geomAtom) {
-	bgGeometryAtomList.add(geomAtom);
-	bgGeometryAtomListDirty = true;
-}
-
-void removeBgGeometryAtomList(GeometryAtom geomAtom) {
-	bgGeometryAtomList.remove(geomAtom);
-	bgGeometryAtomListDirty = true;
-}
-
-GeometryAtom[] getBackgroundGeometryAtoms() {
-	if (bgGeometryAtomListDirty) {
-		int nAtoms = bgGeometryAtomList.size();
-		if (nAtoms == 0) {
-			bgGeometryAtoms = null;
-		}
-		else {
-			bgGeometryAtoms = bgGeometryAtomList.toArray(new GeometryAtom[nAtoms]);
-			bgGeometryAtomListDirty = false;
-		}
-	}
-	return bgGeometryAtoms;
-}
-
-    @Override
-    void mergeTransform(TransformGroupRetained xform) {
-	super.mergeTransform(xform);
-        if (applicationRegion != null) {
-            applicationRegion.transform(xform.transform);
-        }
-    }
-
-    // notifies the Background object that the image data in a referenced
-    // ImageComponent object is changed.
-    // Currently we are not making use of this information.
-
-    void notifyImageComponentImageChanged(ImageComponentRetained image,
-                                        ImageComponentUpdateInfo value) {
-    }
-    @Override
-    void getMirrorObjects(ArrayList leafList, HashKey key) {
-	leafList.add(this); // No Mirror in this case
-    }
-}