public override string ToString()
{
return string.Format( "TriIndex({0},{1}) VertIndex({2},{3}) SharedVertIndex({4},{5}) IsDegenerate = {6}",
triIndex[ 0 ], triIndex[ 1 ], vertIndex[ 0 ], vertIndex[ 1 ], sharedVertIndex[ 0 ], sharedVertIndex[ 1 ], isDegenerate );
}