shell.java

GEo 地理操作源代码

/*$************************************************************************************************
 **
 ** $Id: Shell.java,v 1.3 2004/03/09 20:02:56 desruisseaux Exp $
 **
 ** $Source: /cvsroot/geoapi/src/org/opengis/spatialschema/geometry/primitive/Shell.java,v $
 **
 ** Copyright (C) 2003 Open GIS Consortium, Inc. All Rights Reserved. http://www.opengis.org/Legal/
 **
 *************************************************************************************************/
package org.opengis.spatialschema.geometry.primitive;

// OpenGIS direct dependencies
import org.opengis.spatialschema.geometry.complex.CompositeSurface;


/**
 * Represents a single connected component of a {@linkplain SolidBoundary solid boundary}.
 * A shell consists of a number of references to {@linkplain OrientableSurface orientable
 * surfaces} connected in a topological cycle (an object whose boundary is empty). Unlike a
 * {@linkplain Ring ring}, a <code>Shell</code>'s elements have no natural sort order. Like
 * {@linkplain Ring rings}, <code>Shell</code>s are simple.
 *
 * @UML type GM_Shell
 * @author ISO/DIS 19107
 * @author <A HREF="http://www.opengis.org">OpenGIS&reg; consortium</A>
 * @version 2.0
 *
 * @see SolidBoundary
 * @see Ring
 */
public interface Shell extends CompositeSurface {
    /**
     * Always returns <code>true</code> since shell objects are simples.
     *
     * @return Always <code>true</code>.
     */
    public boolean isSimple();
}