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#ifndef __HALFEDGE_H

#define __HALFEDGE_H

#include "templates.h"

namespace HMesh

{

	typedef HalfEdge_template<Iters> HalfEdge;

	typedef Iters::HalfEdgeList HalfEdgeList;

	typedef Iters::HalfEdgeIter HalfEdgeIter;

	bool is_boundary(HalfEdgeIter h);

	/** Null Element for halfedge lists. This is used as the value of an iterator

			that points to nothing. */

	extern HalfEdgeIter NULL_HALFEDGE_ITER;

	/** Set the next and prev pointers of the first and second argument 

			respectively. */

	void link(HalfEdgeIter, HalfEdgeIter);

	/** Glue halfedges by letting the opp pointers point to each other. */

	void glue(HalfEdgeIter, HalfEdgeIter);

	/// Return the geometric length of a halfedge.

	float length(HalfEdgeIter);

}

#endif