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jMonkeyEngine is a 3-D game engine for adventurous Java developers

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/*
 * Copyright (c) 2009-2012 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions 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 'jMonkeyEngine' nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.jme3.scene;

/**
 * SceneGraphVisitorAdapter is used to traverse the scene
 * graph tree. The adapter version of the interface simply separates 
 * between the {@link Geometry geometries} and the {@link Node nodes} by
 * supplying visit methods that take them.
 * Use by calling {@link Spatial#depthFirstTraversal(com.jme3.scene.SceneGraphVisitor) }
 * or {@link Spatial#breadthFirstTraversal(com.jme3.scene.SceneGraphVisitor)}.
 */
public class SceneGraphVisitorAdapter implements SceneGraphVisitor {
    
    /**
     * Called when a {@link Geometry} is visited.
     * 
     * @param geom The visited geometry
     */
    public void visit(Geometry geom) {}
    
    /**
     * Called when a {@link Node} is visited.
     * 
     * @param node The visited node
     */
    public void visit(Node node) {}

    @Override
    public final void visit(Spatial spatial) {
        if (spatial instanceof Geometry) {
            visit((Geometry)spatial);
        } else {
            visit((Node)spatial);
        }
    }
}