001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/model/spatialschema/OrientablePrimitiveImpl.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    package org.deegree.model.spatialschema;
037    
038    import java.io.Serializable;
039    
040    import org.deegree.model.crs.CoordinateSystem;
041    
042    /**
043     * default implementation of the OrientablePrimitive interface from package deegree.model. the implementation is
044     * abstract because it doesn't make sense to instantiate it.
045     *
046     *
047     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
048     * @author last edited by: $Author: mschneider $
049     *
050     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
051     */
052    public abstract class OrientablePrimitiveImpl extends PrimitiveImpl implements OrientablePrimitive, Serializable {
053        /** Use serialVersionUID for interoperability. */
054        private final static long serialVersionUID = 5655221930434396483L;
055    
056        protected char orientation = '+';
057    
058        /**
059         * the constructor sets the curves orientation
060         *
061         * @param crs
062         *            spatial reference system of the geometry
063         * @param orientation
064         *            orientation of the curve ('+'|'-')
065         *
066         * @exception GeometryException
067         *                will be thrown if orientation is invalid
068         */
069        protected OrientablePrimitiveImpl( CoordinateSystem crs, char orientation ) throws GeometryException {
070            super( crs );
071            setOrientation( orientation );
072        }
073    
074        /**
075         * returns the orientation of a curve
076         *
077         * @return curve orientation ('+'|'-')
078         *
079         */
080        public char getOrientation() {
081            return orientation;
082        }
083    
084        /**
085         * sets the curves orientation
086         *
087         * @param orientation
088         *            orientation of the curve ('+'|'-')
089         *
090         * @exception GeometryException
091         *                will be thrown if orientation is invalid
092         *
093         */
094        public void setOrientation( char orientation )
095                                throws GeometryException {
096            if ( ( orientation != '+' ) && ( orientation != '-' ) ) {
097                throw new GeometryException( orientation + " isn't a valid direction" );
098            }
099    
100            this.orientation = orientation;
101        }
102    
103    }