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#ifndef __VERTEX_H__
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#define __VERTEX_H__
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#include "templates.h"
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namespace HMesh
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{
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typedef Vertex_template<Iters> Vertex;
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typedef Iters::VertexList VertexList;
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typedef Iters::VertexIter VertexIter;
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/** Null Element for vertex lists. This is used as the value of an iterator
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that points to nothing. */
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extern VertexIter NULL_VERTEX_ITER;
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/// Compute valency, i.e. number of incident edges.
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int valency(VertexIter v);
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/** Compute the vertex normal. This function computes the angle
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weighted sum of incident face normals. */
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const CGLA::Vec3f normal(VertexIter v);
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/** Returns true if the two argument vertices are in each other's
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one-rings. */
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bool is_connected(VertexIter v1, VertexIter v2);
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}
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#endif
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