/*****************************************************************************
 *                        J3D.org Copyright (c) 2000
 *                               Java Source
 *
 * This source is licensed under the GNU LGPL v2.1
 * Please read http://www.gnu.org/copyleft/lgpl.html for more information
 *
 * This software comes with the standard NO WARRANTY disclaimer for any
 * purpose. Use it at your own risk. If there's a problem you get to fix it.
 *
 ****************************************************************************/

package org.j3d.ui.navigation;

// Standard imports
// none

// Application specific imports
// none

/**
 * A marker interface to indicate that an item of geometry contains height map
 * information that will be useful for terrain following and collision
 * detection.
 * <p>
 *
 * This implementation is used to mark any geometry items that exists in the
 * scene The interface is used by the navigation code to help simplify the
 * calculations needed to follow terrain. Picking is performed on the scene
 * graph and checks are made for user data being available. If it is, it
 * will ignore any other detail intersection calcs an immediately ask this
 * for resolution of the height for the given X,Z location (it will have
 * previously transformed into the correct coordinate systems so you don't
 * need to worry about that). You return it the height (which may have to
 * be interpolated from your underlying data) at that position.
 *
 * @author Justin Couch
 * @version $Revision: 1.2 $
 */
public interface HeightMapGeometry extends HeightDataSource
{
}