001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/model/spatialschema/SurfacePatch.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 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 import org.deegree.model.crs.CoordinateSystem;
048
049 /**
050 *
051 * Defining the iso geometry <code>SurfacePatch</code> which is used for building surfaces. A
052 * surface patch is made of one exterior ring and 0..n interior rings. By definition there can't be
053 * a surface patch with no exterior ring. A polygon is a specialized surface patch.
054 *
055 * -----------------------------------------------------
056 *
057 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
058 * @version $Revision: 9343 $ $Date: 2007-12-27 14:30:32 +0100 (Do, 27 Dez 2007) $
059 */
060
061 public interface SurfacePatch extends GenericSurface {
062
063 /**
064 * The interpolation determines the surface interpolation mechanism used for this SurfacePatch.
065 * This mechanism uses the control points and control parameters defined in the various
066 * subclasses to determine the position of this SurfacePatch.
067 */
068 SurfaceInterpolation getInterpolation();
069
070 /**
071 * @return the exterior ring of a surfacePatch
072 */
073 Position[] getExteriorRing();
074
075 /**
076 * @return the interior rings of a surfacePatch
077 */
078 Position[][] getInteriorRings();
079
080 /**
081 *
082 * @return the exterior ring of a surfacePatch
083 */
084 Ring getExterior();
085
086 /**
087 *
088 * @return the interior rings of a surfacePatch
089 */
090 Ring[] getInterior();
091
092 /**
093 * @return the coordinate system of the surface patch
094 */
095 CoordinateSystem getCoordinateSystem();
096
097 /**
098 * The Boolean valued operation "intersects" shall return TRUE if this Geometry intersects
099 * another Geometry. Within a Complex, the Primitives do not intersect one another. In general,
100 * topologically structured data uses shared geometric objects to capture intersection
101 * information.
102 */
103 boolean intersects( Geometry gmo );
104
105 /**
106 * The Boolean valued operation "contains" shall return TRUE if this Geometry contains another
107 * Geometry.
108 */
109 boolean contains( Geometry gmo );
110
111 /**
112 * The operation "centroid" shall return the mathematical centroid for this Geometry. The result
113 * is not guaranteed to be on the object.
114 */
115 public Point getCentroid();
116
117 /**
118 * The operation "area" shall return the area of this GenericSurface. The area of a 2
119 * dimensional geometric object shall be a numeric measure of its surface area Since area is an
120 * accumulation (integral) of the product of two distances, its return value shall be in a unit
121 * of measure appropriate for measuring distances squared.
122 */
123 public double getArea();
124
125 }