/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2011, Open Source Geospatial Foundation (OSGeo)
 *    (C) 2004-2005, Open Geospatial Consortium Inc.
 *    
 *    All Rights Reserved. http://www.opengis.org/legal/
 */
package org.opengis.metadata.extent;

import org.opengis.annotation.UML;

import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;


/**
 * Geographic position of the dataset. This is only an approximate
 * so specifying the co-ordinate reference system is unnecessary.
 *
 *
 * @source $URL: http://svn.osgeo.org/geotools/trunk/modules/library/opengis/src/main/java/org/opengis/metadata/extent/GeographicBoundingBox.java $
 * @version <A HREF="http://www.opengeospatial.org/standards/as#01-111">ISO 19115</A>
 * @author  Martin Desruisseaux (IRD)
 * @since   GeoAPI 1.0
 */
@UML(identifier="EX_GeographicBoundingBox", specification=ISO_19115)
public interface GeographicBoundingBox extends GeographicExtent {
    /**
     * Returns the western-most coordinate of the limit of the
     * dataset extent. The value is expressed in longitude in
     * decimal degrees (positive east).
     *
     * @return The western-most longitude between -180 and +180°.
     * @unitof Angle
     */
    @UML(identifier="westBoundLongitude", obligation=MANDATORY, specification=ISO_19115)
    double getWestBoundLongitude();

    /**
     * Returns the eastern-most coordinate of the limit of the
     * dataset extent. The value is expressed in longitude in
     * decimal degrees (positive east).
     *
     * @return The eastern-most longitude between -180 and +180°.
     * @unitof Angle
     */
    @UML(identifier="eastBoundLongitude", obligation=MANDATORY, specification=ISO_19115)
    double getEastBoundLongitude();

    /**
     * Returns the southern-most coordinate of the limit of the
     * dataset extent. The value is expressed in latitude in
     * decimal degrees (positive north).
     *
     * @return The southern-most latitude between -90 and +90°.
     * @unitof Angle
     */
    @UML(identifier="southBoundLatitude", obligation=MANDATORY, specification=ISO_19115)
    double getSouthBoundLatitude();

    /**
     * Returns the northern-most, coordinate of the limit of the
     * dataset extent. The value is expressed in latitude in
     * decimal degrees (positive north).
     *
     * @return The northern-most latitude between -90 and +90°.
     * @unitof Angle
     */
    @UML(identifier="northBoundLatitude", obligation=MANDATORY, specification=ISO_19115)
    double getNorthBoundLatitude();
}