edgeintersection.cpp

来自「一个很好的vc底层代码」· C++ 代码 · 共 78 行

/**********************************************************************
 * $Id: EdgeIntersection.cpp,v 1.2.2.1 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: EdgeIntersection.cpp,v $
 * Revision 1.2.2.1  2005/05/23 18:41:51  strk
 * Replaced sprintf uses with ostringstream
 *
 * Revision 1.2  2004/07/02 13:28:26  strk
 * Fixed all #include lines to reflect headers layout change.
 * Added client application build tips in README.
 *
 * Revision 1.1  2004/03/19 09:48:45  ybychkov
 * "geomgraph" and "geomgraph/indexl" upgraded to JTS 1.4
 *
 * Revision 1.9  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/geomgraph.h>

namespace geos {

EdgeIntersection::EdgeIntersection(const Coordinate& newCoord, int newSegmentIndex, double newDist) {
	coord=newCoord;
	segmentIndex=newSegmentIndex;
	dist=newDist;
}

EdgeIntersection::~EdgeIntersection() {
	//aaa
}

int EdgeIntersection::compare(int newSegmentIndex, double newDist) {
	if (segmentIndex<newSegmentIndex) return -1;
	if (segmentIndex>newSegmentIndex) return 1;
	if (dist<newDist) return -1;
	if (dist>newDist) return 1;
	return 0;
}

bool EdgeIntersection::isEndPoint(int maxSegmentIndex) {
	if (segmentIndex==0 && dist==0.0) return true;
	if (segmentIndex==maxSegmentIndex) return true;
	return false;
}

string EdgeIntersection::print(){
	ostringstream s;
	s<<coord.toString()<<" seg#="<<segmentIndex<<" dist="<<dist;
	return s.str();

}

int EdgeIntersection::compareTo(void* obj) {
	EdgeIntersection* other=(EdgeIntersection*) obj;
	return compare(other->segmentIndex,other->dist);
}

} // namespace geos