001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/crs/coordinatesystems/VerticalCRS.java $
002    /*----------------------------------------------------------------------------
003     This file is part of deegree, http://deegree.org/
004     Copyright (C) 2001-2009 by:
005       Department of Geography, University of Bonn
006     and
007       lat/lon GmbH
008    
009     This library is free software; you can redistribute it and/or modify it under
010     the terms of the GNU Lesser General Public License as published by the Free
011     Software Foundation; either version 2.1 of the License, or (at your option)
012     any later version.
013     This library is distributed in the hope that it will be useful, but WITHOUT
014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016     details.
017     You should have received a copy of the GNU Lesser General Public License
018     along with this library; if not, write to the Free Software Foundation, Inc.,
019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020    
021     Contact information:
022    
023     lat/lon GmbH
024     Aennchenstr. 19, 53177 Bonn
025     Germany
026     http://lat-lon.de/
027    
028     Department of Geography, University of Bonn
029     Prof. Dr. Klaus Greve
030     Postfach 1147, 53001 Bonn
031     Germany
032     http://www.geographie.uni-bonn.de/deegree/
033    
034     e-mail: info@deegree.org
035    ----------------------------------------------------------------------------*/
036    
037    package org.deegree.crs.coordinatesystems;
038    
039    import org.deegree.crs.Identifiable;
040    import org.deegree.crs.components.Axis;
041    import org.deegree.crs.components.VerticalDatum;
042    
043    /**
044     * The <code>VerticalCRS</code> represents a crs based on one axis only, typically this crs is used as an extension on
045     * an already present crs, and adds a 'heightaxis' to the original crs.
046     *
047     * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
048     *
049     * @author last edited by: $Author: mschneider $
050     *
051     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
052     *
053     */
054    public class VerticalCRS extends CoordinateSystem {
055    
056        private static final long serialVersionUID = 6647817667781900545L;
057    
058        /**
059         * @param datum
060         * @param axisOrder
061         * @param identity
062         */
063        public VerticalCRS( VerticalDatum datum, Axis[] axisOrder, Identifiable identity ) {
064            super( datum, axisOrder, identity );
065            checkForNullObject( axisOrder, "VerticalCRS", "axisOrder" );
066            if ( axisOrder.length != 1 ) {
067                throw new IllegalArgumentException( "A vertical crs can only be 1 dimensional." );
068            }
069        }
070    
071        @Override
072        public int getDimension() {
073            return 1;
074        }
075    
076        @Override
077        public int getType() {
078            return CoordinateSystem.VERTICAL_CRS;
079        }
080    
081        /**
082         * @return the axis of this vertical crs.
083         */
084        public Axis getVerticalAxis() {
085            return getAxis()[0];
086        }
087    }