private void ConstructCubeFaceNames( string name )
{
string baseName, ext;
string[] postfixes = { "_rt", "_lf", "_up", "_dn", "_fr", "_bk" };
int pos = name.LastIndexOf( "." );
baseName = name.Substring( 0, pos );
ext = name.Substring( pos );
for ( int i = 0; i < 6; i++ )
{
cubeFaceNames[ i ] = baseName + postfixes[ i ] + ext;
}
}