public static Vector3 GetNormal <TVertex2>(ref TVertex2 vertex) where TVertex2 : struct, IVertex
{
INormalVertex ipv = vertex as INormalVertex;
if (ipv != null)
{
return(ipv.GetNormal());
}
return(Vector3.Zero);
}
public static void SetNormal <TVertex2>(ref TVertex2 vertex, ref Vector3 normal) where TVertex2 : struct, IVertex
{
INormalVertex inv = vertex as INormalVertex;
if (inv != null)
{
inv.SetNormal(normal);
vertex = (TVertex2)inv;
}
}
