text: /**********************************************************************
   *
   * GEOS - Geometry Engine Open Source
   * http://geos.osgeo.org
   *
   * Copyright (C) 2006 Refractions Research Inc.
   *
   * This is free software; you can redistribute and/or modify it under
   * the terms of the GNU Lesser General Public Licence as published
   * by the Free Software Foundation. 
   * See the COPYING file for more information.
   *
   **********************************************************************/
  
  #ifndef GEOS_GEOM_LOCATION_H
  #define GEOS_GEOM_LOCATION_H
  
  #include <geos/export.h>
  #include <iostream> // for ostream
  
  #include <geos/inline.h>
  
  namespace geos {
  namespace geom { // geos::geom
  
  /** \brief
   *
   *  Constants representing the location of a point relative to a geometry.
   *
   *  They  can also be thought of as the row or column index of a DE-9IM matrix.
   *  For a description of the DE-9IM, see the <A
   *  HREF="http://www.opengis.org/techno/specs.htm">OpenGIS Simple Features
   *  Specification for SQL</A> .
   */
  class GEOS_DLL Location {
  public:
  	enum Value {
  
  		/**
  		 *  Used for uninitialized location values.
  		 */
  		UNDEF=-1,   // Instead of NULL
  
  		/**
  		 * DE-9IM row index of the interior of the first geometry and
  		 * column index of the interior of the second geometry.
  		 * Location value for the interior of a geometry.
  		 */
  		INTERIOR = 0,
  
  		/**
  		 * DE-9IM row index of the boundary of the first geometry and
  		 * column index of the boundary of the second geometry.
  		 * Location value for the boundary of a geometry.
  		 */
  		BOUNDARY = 1,
  
  		/**
  		 * DE-9IM row index of the exterior of the first geometry and
  		 * column index of the exterior of the second geometry.
  		 * Location value for the exterior of a geometry.
  		 */
  		EXTERIOR = 2
  	};
  
  	static char toLocationSymbol(int locationValue);
  };
  
  } // namespace geos::geom
  } // namespace geos
  
  //#ifdef GEOS_INLINE
  //# include "geos/geom/Location.inl"
  //#endif
  
  #endif // ndef GEOS_GEOM_LOCATION_H
  
  