PointMassNode.java

/**
 * Copyright (c) 2003-2009, Xith3D Project Group all rights reserved.
 * 
 * Portions based on the Java3D interface, Copyright by Sun Microsystems.
 * Many thanks to the developers of Java3D and Sun Microsystems for their
 * innovation and design.
 * 
 * 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 the 'Xith3D Project Group' 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 LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) A
 * RISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE
 */
package org.xith3d.scenegraph.particles.jops;

import org.openmali.spatial.bodies.Frustum;
import org.openmali.vecmath2.Colorf;
import org.xith3d.scenegraph.UpdatableNode;
import org.xith3d.scenegraph.Transform3D;
import org.xith3d.scenegraph.TransformGroup;
import org.xith3d.scenegraph.View;
import org.xith3d.scenegraph.primitives.Sphere;

import org.softmed.jops.modifiers.Modifier;
import org.softmed.jops.modifiers.PointMass;

/**
 * Insert comment here.
 * 
 * @author Guilherme Gomes (aka guilhermegrg)
 */
public class PointMassNode extends TransformGroup implements UpdatableNode
{
    private PointMass pointMass;
    
    private Sphere sphere = new Sphere( 0.1f, 5, 5, Colorf.RED );
    
    public void setPointMass( PointMass pointMass )
    {
        this.pointMass = pointMass;
        
        update();
    }
    
    public Modifier getPointMass()
    {
        return ( pointMass );
    }
    
    protected void update()
    {
        if ( pointMass != null )
        {
            setTransform( new Transform3D( pointMass.getPosition() ) );
        }
    }
    
    /**
     * {@inheritDoc}
     */
    public boolean update( View view, Frustum frustum, long nanoTime, long nanoStep )
    {
        update();
        
        return ( true );
    }
    
    public PointMassNode()
    {
        addChild( sphere );
    }
}