com.sun.j3d.utils.scenegraph.io.SceneGraphStreamWriter Maven / Gradle / Ivy
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/*
* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or
* maintenance of any nuclear facility.
*
*/
package com.sun.j3d.utils.scenegraph.io;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.HashMap;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.DanglingReferenceException;
import com.sun.j3d.utils.scenegraph.io.retained.StreamControl;
import com.sun.j3d.utils.universe.SimpleUniverse;
/**
* Writes a Java3D SceneGraph to a Java OutputStream.
* Using this class to write to a FileOutputStream is not recommended. Use
* SceneGraphFileWriter instead to achieve maximum performance and flexibility.
*/
public class SceneGraphStreamWriter extends java.lang.Object {
private StreamControl control;
private DataOutputStream out;
/** Creates new SceneGraphStreamWriter that will write to the supplied stream */
public SceneGraphStreamWriter(java.io.OutputStream outputStream ) throws IOException {
this.out = new java.io.DataOutputStream( outputStream );
control = new StreamControl( out );
control.writeStreamHeader();
}
/**
* Write universe to the Stream.
*
* If writeContent is true then all BranchGraphs attached to the
* universe will be saved. If it is false then only the universe
* data structures will be output (PlatformGeometry, ViewerAvatar, Locales,
* and the MultiTransformGroup between the ViewingPlatform and the View).
*
* If writeContent is true then all the BranchGraphs
* attached to the Locales of the universe must have the
* ALLOW_DETACH capability set. If they do not, a CapabilityNotSetException
* will be thrown
*
* @param universe The universe to write
* @param writeContent Flag enabling the BranchGraphs to be written
*
* @exception IOException
* @exception UnsupportedUniverseException Thrown if the universe class is not
* supported by this implementation
*/
public void writeUniverse( SimpleUniverse universe, boolean writeContent ) throws IOException, UnsupportedUniverseException {
control.writeUniverse( out, universe, writeContent );
}
/**
* Write the entire graph to the stream.
*
* The API will correctly handle NodeComponents that are shared
* between seperate graphs. However Nodes cannot be referenced
* in other Graphs.
*
* If a reference to a Node in another graph is encountered a
* DanglingReferenceException will be thrown.
*
* namedObjects can contain a mapping between a key and a SceneGraphObject
* in the graph. During the read process this can be used to locate nodes
* in the graph.
*/
public void writeBranchGraph( BranchGroup graph, HashMap namedObjects ) throws IOException, DanglingReferenceException, NamedObjectException {
// TODO Add namedObjects to SymbolTable
control.addNamedObjects( namedObjects );
control.writeBranchGraph( graph, null );
}
/**
* Close the SceneGraphStreamWriter and the associated stream
*/
public void close() throws IOException {
control.close();
out.close();
}
}