/// <summary>
/// Returns the unitized sum of halfedge normals around the vertex.
/// </summary>
/// <returns></returns>
public static Vec3d GetNormal <V, E, F>(this HeVertex <V, E, F> vertex)
where V : HeVertex <V, E, F>, IPosition3d
where E : Halfedge <V, E, F>
where F : HeFace <V, E, F>
{
return(GetNormal(vertex, IPosition3d <V> .Get));
}
/// <summary>
///
/// </summary>
/// <typeparam name="V"></typeparam>
/// <typeparam name="E"></typeparam>
/// <typeparam name="K"></typeparam>
/// <param name="start"></param>
/// <param name="getKey"></param>
/// <returns></returns>
public static V NearestMin <V, E, K>(this HeVertex <V, E> start, Func <V, K> getKey)
where V : HeVertex <V, E>
where E : Halfedge <V, E>
where K : IComparable <K>
{
return(MeshUtil.NearestMin(start.Self, v => v.ConnectedVertices, getKey));
}
/// <summary>
///
/// </summary>
/// <typeparam name="V"></typeparam>
/// <typeparam name="E"></typeparam>
/// <typeparam name="K"></typeparam>
/// <param name="start"></param>
/// <param name="getKey"></param>
/// <returns></returns>
public static IEnumerable <V> WalkToMax <V, E, K>(this HeVertex <V, E> start, Func <V, K> getKey)
where V : HeVertex <V, E>
where E : Halfedge <V, E>
where K : IComparable <K>
{
return(MeshUtil.WalkToMax(start.Self, v => v.ConnectedVertices, getKey));
}
/// <summary>
/// Returns the unitized sum of halfedge normals around the vertex.
/// </summary>
/// <returns></returns>
public static Vec3d GetNormal <V, E, F>(this HeVertex <V, E, F> vertex, Func <V, Vec3d> getPosition)
where V : HeVertex <V, E, F>
where E : Halfedge <V, E, F>
where F : HeFace <V, E, F>
{
return(vertex.OutgoingHalfedges.Where(he => !he.IsHole).Sum(he => he.GetNormal(getPosition)).Unit);
}