/*
* OSGeom -- Geometry Collab
*
* (C) 2009, Open Source Geospatial Foundation (OSGeo)
* (C) 2001-2009 Department of Geography, University of Bonn
* (C) 2001-2009 lat/lon GmbH
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.osgeo.geometry.primitive.patches;
/**
* The <code>Cone</code> class represents (according to GML-3.1 spec ) a gridded surface given as a family of
* conic sections whose control points vary linearly.
* A 5-point ellipse with all defining positions identical is a point. Thus, a truncated elliptical cone can be
* given as a 2x5 set of control points <<P1, P1, P1, P1, P1>, <P2, P3, P4, P5, P6>>. P1 is the apex of the
* cone. P2, P3, P4, P5 and P6 are any five distinct points around the base ellipse of the cone. If the horizontal
* curves are circles as opposed to ellipses, the circular cone can be constructed using <<P1, P1, P1>, <P2, P3,
* P4>>.
*
* @author <a href="mailto:ionita@lat-lon.de">Andrei Ionita</a>
* @author last edited by: $Author$
*
* @version $Revision$, $Date$
*/
public interface Cone extends GriddedSurfacePatch {
// nothing new here, this interface is only necessary for a type-based differentiation
/**
* Must always return {@link GriddedSurfacePatch.GriddedSurfaceType#CONE}.
*
* @return {@link GriddedSurfacePatch.GriddedSurfaceType#CONE}
*/
public GriddedSurfaceType getGriddedSurfaceType();
}