#include <math.h>
-#include <list>
-#include <vector>
-#include <string>
-
#include <simgear/compiler.h>
#include <simgear/constants.h>
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/props/tiedpropertylist.hxx>
#include <FDM/groundcache.hxx>
-using std::list;
-using std::vector;
-using std::string;
-
namespace simgear {
class BVHMaterial;
}