001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/model/spatialschema/Ring.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 /**
039 *
040 *
041 *
042 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
043 * @author last edited by: $Author: mschneider $
044 *
045 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
046 */
047 public interface Ring extends OrientableCurve {
048
049 /**
050 * @return true because a ring is always a cycle
051 */
052 public boolean isCycle();
053
054 /**
055 * @return true because a ring is always a simple
056 */
057 public boolean isSimple();
058
059 /**
060 * @return all positions the builds the ring
061 */
062 public Position[] getPositions();
063
064 /**
065 * @return the ring as an instance of <tt>CurveSegment</tt>
066 * @throws GeometryException
067 */
068 public CurveSegment getAsCurveSegment()
069 throws GeometryException;
070
071 /**
072 *
073 * @return CurveSegments a Ring is build from
074 */
075 public CurveSegment[] getCurveSegments();
076 }