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#ifndef __VERTEX_H__

#define __VERTEX_H__

#include "templates.h"

namespace HMesh

{

	typedef Vertex_template<Iters> Vertex;

	typedef Iters::VertexList VertexList;

	typedef Iters::VertexIter VertexIter;

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

			that points to nothing. */

	extern VertexIter NULL_VERTEX_ITER;

	/// Compute valency, i.e. number of incident edges.

	int valency(VertexIter v);

	/** Compute the vertex normal. This function computes the angle

			weighted sum of incident face normals. */

	const CGLA::Vec3f normal(VertexIter v);

	/** Returns true if the two argument vertices are in each other's 

			one-rings. */

	bool is_connected(VertexIter v1, VertexIter v2);

	/** Returns true if the vertex is a boundary vertex. */

	bool is_boundary(VertexIter v);

	/** Check and enforce boundary consistency. */

	void check_boundary_consistency(VertexIter v);

}

#endif