uniquecoordinatearrayfilter.cpp

来自「一个很好的vc底层代码」· C++ 代码 · 共 68 行

/**********************************************************************
 * $Id: UniqueCoordinateArrayFilter.cpp,v 1.7 2004/07/08 19:34:50 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: UniqueCoordinateArrayFilter.cpp,v $
 * Revision 1.7  2004/07/08 19:34:50  strk
 * Mirrored JTS interface of CoordinateSequence, factory and
 * default implementations.
 * Added DefaultCoordinateSequenceFactory::instance() function.
 *
 * Revision 1.6  2004/07/02 13:28:29  strk
 * Fixed all #include lines to reflect headers layout change.
 * Added client application build tips in README.
 *
 * Revision 1.5  2004/04/10 22:41:25  ybychkov
 * "precision" upgraded to JTS 1.4
 *
 * Revision 1.4  2003/11/07 01:23:43  pramsey
 * Add standard CVS headers licence notices and copyrights to all cpp and h
 * files.
 *
 *
 **********************************************************************/


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

namespace geos {

UniqueCoordinateArrayFilter::UniqueCoordinateArrayFilter() {
	list=new DefaultCoordinateSequence();
}
UniqueCoordinateArrayFilter::~UniqueCoordinateArrayFilter() {
	delete list;
}
/**
*  Returns the gathered <code>Coordinate</code>s.
*
*@return    the <code>Coordinate</code>s collected by this <code>CoordinateArrayFilter</code>
*/
const CoordinateSequence* UniqueCoordinateArrayFilter::getCoordinates() const {
	return list;
}

void UniqueCoordinateArrayFilter::filter_ro(const Coordinate *coord) {
	if (CoordinateSequence::indexOf(coord,list)==-1) {
		list->add(*coord);
	}
}

void UniqueCoordinateArrayFilter::filter_rw(Coordinate *coord) {
	throw new UnsupportedOperationException("UniqueCoordinateArrayFilter is a read-only filter");
}

}