001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/model/spatialschema/SurfacePatch.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    import org.deegree.model.crs.CoordinateSystem;
040    
041    /**
042     *
043     * Defining the iso geometry <code>SurfacePatch</code> which is used for building surfaces. A surface patch is made of
044     * one exterior ring and 0..n interior rings. By definition there can't be a surface patch with no exterior ring. A
045     * polygon is a specialized surface patch.
046     *
047     * -----------------------------------------------------
048     *
049     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
050     * @version $Revision: 18195 $ $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
051     */
052    
053    public interface SurfacePatch extends GenericSurface {
054    
055        /**
056         * The interpolation determines the surface interpolation mechanism used for this SurfacePatch. This mechanism uses
057         * the control points and control parameters defined in the various subclasses to determine the position of this
058         * SurfacePatch.
059         *
060         * @return the surface interpolation of this surface
061         */
062        SurfaceInterpolation getInterpolation();
063    
064        /**
065         * @return the exterior ring of a surfacePatch
066         */
067        Position[] getExteriorRing();
068    
069        /**
070         * @return the interior rings of a surfacePatch
071         */
072        Position[][] getInteriorRings();
073    
074        /**
075         *
076         * @return the exterior ring of a surfacePatch
077         */
078        Ring getExterior();
079    
080        /**
081         *
082         * @return the interior rings of a surfacePatch
083         */
084        Ring[] getInterior();
085    
086        /**
087         * @return the coordinate system of the surface patch
088         */
089        CoordinateSystem getCoordinateSystem();
090    
091        /**
092         * The Boolean valued operation "intersects" shall return TRUE if this surfacepatch intersects another Geometry.
093         * Within a Complex, the Primitives do not intersect one another. In general, topologically structured data uses
094         * shared geometric objects to capture intersection information.
095         *
096         * @param gmo
097         * @return true if this surfacepatch intersects with given Geometry
098         */
099        boolean intersects( Geometry gmo );
100    
101        /**
102         * The Boolean valued operation "contains" shall return TRUE if this Geometry contains another Geometry.
103         *
104         * @param gmo
105         * @return true if this surfacepatch contains given Geometry
106         */
107        boolean contains( Geometry gmo );
108    
109        /**
110         * The operation "centroid" shall return the mathematical centroid for this surfacepatch. The result is not
111         * guaranteed to be on the object.
112         *
113         * @return the centroid
114         */
115        public Point getCentroid();
116    
117        /**
118         * The operation "area" shall return the area of this GenericSurface. The area of a 2 dimensional geometric object
119         * shall be a numeric measure of its surface area Since area is an accumulation (integral) of the product of two
120         * distances, its return value shall be in a unit of measure appropriate for measuring distances squared.
121         */
122        public double getArea();
123    
124    }