
native class IPVS
{
	bool IsEmptyPVS();
	bool IsInPVS( int numSources, CastTo[Vector*] void* sources, Vector position );
	bool IsAbsBoxInPVS( int numSources, CastTo[Vector*] void* sources, Vector mins, Vector maxs );
	bool IsSkyVisibleFromPosition( Vector position );
	bool IsSunVisibleFromPosition( Vector position );
}