/// <summary>
/// Add a new vertex to the end of the Vertex list.
/// </summary>
/// <param name="tag">The type of vertex tag, such as smooth or corner.</param>
/// <param name="vertex">Location of new vertex.</param>
/// <returns>The newly added vertex.</returns>
/// <exception cref="ArgumentOutOfRangeException">If tag is unset or non-defined.</exception>
/// <since>7.0</since>
public SubDVertex Add(SubDVertexTag tag, Point3d vertex)
{
if (!SubD.IsSubDVertexTagDefined(tag))
{
throw new ArgumentOutOfRangeException("tag");
}
IntPtr ptr_subd = m_subd.NonConstPointer();
uint id = 0;
IntPtr ptr_vertex = UnsafeNativeMethods.ON_SubD_AddVertex(ptr_subd, tag, vertex, ref id);
if (ptr_vertex != IntPtr.Zero)
{
return(new SubDVertex(m_subd, ptr_vertex, id));
}
return(null);
}
internal static bool IsSubDVertexTagDefined(SubDVertexTag tag)
{
return(tag > SubDVertexTag.Unset && tag <= SubDVertexTag.Dart);
}