geodeticdatum.java

GEo 地理操作源代码

/*$************************************************************************************************
 **
 ** $Id: GeodeticDatum.java,v 1.1 2004/05/06 15:51:50 desruisseaux Exp $
 **
 ** $Source: /cvsroot/geoapi/src/org/opengis/referencing/datum/GeodeticDatum.java,v $
 **
 ** Copyright (C) 2003 Open GIS Consortium, Inc. All Rights Reserved. http://www.opengis.org/Legal/
 **
 *************************************************************************************************/
package org.opengis.referencing.datum;


/**
 * Defines the location and precise orientation in 3-dimensional space of a defined ellipsoid
 * (or sphere) that approximates the shape of the earth. Used also for Cartesian coordinate
 * system centered in this ellipsoid (or sphere).
 *
 * @UML abstract CD_GeodeticDatum
 * @author ISO 19111
 * @author <A HREF="http://www.opengis.org">OpenGIS&reg; consortium</A>
 * @version <A HREF="http://www.opengis.org/docs/03-073r1.zip">Abstract specification 2.0</A>
 *
 * @see Ellipsoid
 * @see PrimeMeridian
 */
public interface GeodeticDatum extends Datum {
    /**
     * Returns the ellipsoid.
     *
     * @return The ellipsoid.
     * @UML association usesEllipsoid
     */
    Ellipsoid getEllipsoid();

    /**
     * Returns the prime meridian.
     *
     * @return The prime meridian.
     * @UML association usesPrimeMeridian
     */
    PrimeMeridian getPrimeMeridian();
}