//------------------------------------------------------------------------------
//
// This file is part of Toolkit for Conceptual Modeling (TCM).
// (c) copyright 1999, Vrije Universiteit Amsterdam and University of Twente.
// Author: Frank Dehne (frank@cs.vu.nl).
// Author: Henk van de Zandschulp (henkz@cs.utwente.nl).
//
// TCM is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// TCM 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with TCM; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//-----------------------------------------------------------------------------
#ifndef _SQANCHORLINKEDGE_H
#define _SQANCHORLINKEDGE_H

#include "edge.h"
#include "textshape.h"
class SQGraph;

/// binary anchor link edge class in a SQD.
class SQAnchorLinkEdge: public Edge {
/*@Doc: {\large {\bf scope:} TSQD} */
public:
	///
	SQAnchorLinkEdge(SQGraph *g, Subject *n1, Subject *n2);
	///
	Subject *Clone() {return new SQAnchorLinkEdge(*this);}
	///
	int GetClassType() const {return Code::CBD_OBJECT_LINK_EDGE;}
	///
	const Point *GetAnchor1() const {return &anchor1;} 
	///
	const Point *GetAnchor2() const {return &anchor2;} 
	///
	void SetAnchor1(const Point *pt) {anchor1=*pt;} 
	///
	void SetAnchor2(const Point *pt) {anchor2=*pt;} 
	///
	bool ReadMembers(InputFile *ifile, double format);
	///
	void WriteMembers(OutputFile *ofile);
private:
	///
	Point anchor1;
	///
	Point anchor2;
};
#endif
