001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/model/spatialschema/GenericSurface.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2006 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53115 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042
043 ---------------------------------------------------------------------------*/
044
045 package org.deegree.model.spatialschema;
046
047 /**
048 *
049 * The interface defines the basis of surfaces and surface patches
050 *
051 * <p>-----------------------------------------------------</p>
052 *
053 * @author Andreas Poth
054 * @version $Revision: 6259 $ $Date: 2007-03-20 10:15:15 +0100 (Di, 20 Mär 2007) $
055 * <p>
056 */
057 public interface GenericSurface {
058
059 /**
060 * returns the length of all boundaries of the surface
061 * in a reference system appropriate for measuring distances.
062 */
063 double getPerimeter();
064
065 /**
066 * The operation "area" shall return the area of this GenericSurface.
067 * The area of a 2 dimensional geometric object shall be a numeric
068 * measure of its surface area Since area is an accumulation (integral)
069 * of the product of two distances, its return value shall be in a unit
070 * of measure appropriate for measuring distances squared.
071 */
072 double getArea();
073
074 /**
075 * returns the bounding box of the surface
076 */
077 Envelope getEnvelope();
078
079 }
080 /* ********************************************************************
081 Changes to this class. What the people have been up to:
082 $Log$
083 Revision 1.5 2006/07/12 14:46:15 poth
084 comment footer added
085
086 ********************************************************************** */