boundary.java

GEo 地理操作源代码

/*$************************************************************************************************
 **
 ** $Id: Boundary.java,v 1.5 2004/03/09 20:02:54 desruisseaux Exp $
 **
 ** $Source: /cvsroot/geoapi/src/org/opengis/spatialschema/geometry/Boundary.java,v $
 **
 ** Copyright (C) 2003 Open GIS Consortium, Inc. All Rights Reserved. http://www.opengis.org/Legal/
 **
 *************************************************************************************************/
package org.opengis.spatialschema.geometry;

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


/**
 * The abstract root data type for all the data types used to represent the boundary of geometric
 * objects. Any subclass of {@link Geometry} will use a subclass of <code>Boundary</code> to
 * represent its boundary through the operation {@link Geometry#getBoundary}. By the nature of
 * geometry, boundary objects are cycles.
 *
 * @UML type GM_Boundary
 * @author ISO/DIS 19107
 * @author <A HREF="http://www.opengis.org">OpenGIS&reg; consortium</A>
 * @version 2.0
 */
public interface Boundary extends Complex {
    /**
     * Always returns <code>true</code> since boundary objects are cycles.
     *
     * @return Always <code>true</code>.
     */
    public boolean isCycle();
}