001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/model/spatialschema/SurfaceBoundary.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.model.spatialschema;
038    
039    /**
040     *
041     * Defining the boundary of a surface. The surface boundary is defined as ring surrounding the exterior boundary of the
042     * surface and the rings surrounding each interior ring of the surface.
043     * <p>
044     * A SurfaceBoundary consists of some number of Rings, corresponding to the various components of its boundary. In the
045     * normal 2D case, one of these rings is distinguished as being the exterior boundary. In a general manifold this is not
046     * always possible, in which case all boundaries shall be listed as interior boundaries, and the exterior will be empty.
047     *
048     * <p>
049     * -----------------------------------------------------
050     * </p>
051     *
052     * @author Axel Schaefer
053     * @version $Revision: 18195 $ $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
054     *          <p>
055     */
056    
057    public interface SurfaceBoundary extends PrimitiveBoundary {
058    
059        /**
060         * get the exterior ring
061         *
062         * @return the exterior ring
063         */
064        public Ring getExteriorRing();
065    
066        /**
067         * gets the interior ring(s)
068         *
069         * @return the interior ring(s)
070         */
071        public Ring[] getInteriorRings();
072    
073    }