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#ifndef __HALFEDGE_H
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#define __HALFEDGE_H
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#include "templates.h"
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namespace HMesh
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{
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typedef HalfEdge_template<Iters> HalfEdge;
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typedef Iters::HalfEdgeList HalfEdgeList;
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typedef Iters::HalfEdgeIter HalfEdgeIter;
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/// Returns true if the halfedge is a boundary halfedge.
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bool is_boundary(HalfEdgeIter h);
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/** Null Element for halfedge lists. This is used as the value of an iterator
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that points to nothing. */
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extern HalfEdgeIter NULL_HALFEDGE_ITER;
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/** Set the next and prev pointers of the first and second argument
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respectively. */
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void link(HalfEdgeIter, HalfEdgeIter);
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/** Glue halfedges by letting the opp pointers point to each other. */
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void glue(HalfEdgeIter, HalfEdgeIter);
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/// Return the geometric length of a halfedge.
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float length(HalfEdgeIter);
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}
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#endif
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