#include <iostream.h>#include "global.h"ostream& operator<<(ostream& o, camera& c) {        o<<"camera {\n";        o<<"location "<<c.l<<"\n";        o<<"sky "<<c.s<<"\n";        o<<"direction "<<c.d<<"\n";        o<<"up "<<c.u<<"\n";        o<<"right "<<c.r<<"\n";        o<<"look at "<<c.a<<"\n";        o<<c.T;        o<<"}\n";        return o;}camera actcamera;