location.cpp

一个很好的vc底层代码

/**********************************************************************
 * $Id: Location.cpp,v 1.9.2.1 2005/05/23 18:41:51 strk Exp $
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.refractions.net
 *
 * Copyright (C) 2001-2002 Vivid Solutions 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.
 *
 **********************************************************************
 * $Log: Location.cpp,v $
 * Revision 1.9.2.1  2005/05/23 18:41:51  strk
 * Replaced sprintf uses with ostringstream
 *
 * Revision 1.9  2004/07/02 13:28:26  strk
 * Fixed all #include lines to reflect headers layout change.
 * Added client application build tips in README.
 *
 * Revision 1.8  2003/11/07 01:23:42  pramsey
 * Add standard CVS headers licence notices and copyrights to all cpp and h
 * files.
 *
 *
 **********************************************************************/


#include <sstream>
#include <geos/geom.h>
#include <geos/util.h>

namespace geos {

/**
 *  Converts the location value to a location symbol, for example, <code>EXTERIOR => 'e'</code>.
 *
 *@param  locationValue  either EXTERIOR, BOUNDARY, INTERIOR or NULL
 *@return                either 'e', 'b', 'i' or '-'
 */
char Location::toLocationSymbol(int locationValue) {
	switch (locationValue) {
		case EXTERIOR:
			return 'e';
		case BOUNDARY:
			return 'b';
		case INTERIOR:
			return 'i';
		case UNDEF: //NULL
			return '-';
		default:
			ostringstream s;
			s<<"Unknown location value: "<<locationValue;
			throw new IllegalArgumentException(s.str());
	}
}
}