001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/model/spatialschema/GenericSurface.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 * The interface defines the basis of surfaces and surface patches
042 *
043 * <p>
044 * -----------------------------------------------------
045 * </p>
046 *
047 * @author Andreas Poth
048 * @version $Revision: 18195 $ $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
049 * <p>
050 */
051 public interface GenericSurface {
052
053 /**
054 * @return the length of all boundaries of the surface in a reference system appropriate for measuring distances.
055 */
056 double getPerimeter();
057
058 /**
059 * The operation "area" shall return the area of this GenericSurface. The area of a 2 dimensional geometric object
060 * shall be a numeric measure of its surface area Since area is an accumulation (integral) of the product of two
061 * distances, its return value shall be in a unit of measure appropriate for measuring distances squared.
062 *
063 * @return the area
064 */
065 double getArea();
066
067 /**
068 * @return the bounding box of the surface
069 */
070 Envelope getEnvelope();
071
072 }