/// <summary>
/// Determines whether the surface contains the face.
/// </summary>
/// <param name="face">The face to locate.</param>
/// <returns><c>true</c> if the face is found in the surface; otherwise, <c>false</c>.</returns>
public bool ContainsFace(Face face)
{
return(faces.ContainsValue(face));
}
private void RemoveFaceUsageFromEdge(Edge edge, Face face)
{
edge.RemoveUser(face);
RemoveEdgeUsageFromVertex(edge.a, edge);
RemoveEdgeUsageFromVertex(edge.b, edge);
}