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#ifndef __FACE_H__

#define __FACE_H__

#include "templates.h"

namespace HMesh

{

	/// Compute the number of edges of a face

	int no_edges(FaceIter v);

	/** Compute the normal of a face. If the face is not a triangle,

			the normal is not defined, but computed using the first three

			vertices of the face. */

	CGLA::Vec3f normal(FaceIter f);

	/** Compute the area of a face. */

	float area(FaceIter f);

	/** Compute the centre of a face */

	CGLA::Vec3f centre(FaceIter f);

}

#endif