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/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2011, Open Source Geospatial Foundation (OSGeo)
 *    (C) 2008, Open Geospatial Consortium Inc.
 *
 *    All Rights Reserved. http://www.opengis.org/legal/
 */
package org.opengis.style;

import org.opengis.annotation.XmlElement;

/**
 * The OverlapBehavior element tells a system how to behave when multiple raster images in a layer
 * overlap each other, for example with satellite-image scenes. LATEST_ON_TOP and EARLIEST_ON_TOP
 * refer to the time the scene was captured. AVERAGE means to average multiple scenes together. This
 * can produce blurry results if the source images are not perfectly aligned in their
 * geo-referencing. RANDOM means to select an image (or piece thereof) randomly and place it on top.
 * This can produce crisper results than AVERAGE potentially more efficiently than LATEST_ON_TOP or
 * EARLIEST_ON_TOP. The default behaviour is system-dependent.
 *
 * @return LATEST_ON_TOP, EARLIEST_ON_TOP, AVERAGE or RANDOM
 * @version Symbology Encoding
 *     Implementation Specification 1.1.0
 * @author Open Geospatial Consortium
 * @author Johann Sorel (Geomatys)
 * @since GeoAPI 2.2
 */
@XmlElement("OverlapBehavior")
public enum OverlapBehavior {
    LATEST_ON_TOP,
    EARLIEST_ON_TOP,
    AVERAGE,
    RANDOM
}




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