Реферат: Трехмерная графика Теория

Vector& operator /= ( double );

friend Vector operator + ( const Vector&, const Vector& );

friend Vector operator - ( const Vector&, const Vector& );

friend Vector operator * ( const Vector&, const Vector& );

friend Vector operator * ( double, const Vector& );

friend Vector operator * ( const Vector&, double );

friend Vector operator / ( const Vector&, double );

friend Vector operator / ( const Vector&, const Vector& );

friend double operator & ( const Vector& u, const Vector& v )

{ return u.x * v.x + u.y * v.y + u.z * v.z; };

friend Vector operator ^ ( const Vector&, const Vector& );

double operator ! () { return (double) sqrt ( x * x + y * y + z * z ); };

double& operator [] ( int n ) { return *( &x + n ); };

int operator < ( double v ) { return x < v && y < v && z < v; };

int operator > ( double v ) { return x > v && y > v && z > v; };

};

class Ray

{

public:

Vector Org;

Vector Dir;

Ray () {};

Ray ( Vector& o, Vector& d ) { Org = o, Dir = d; };

Vector Point ( double t ) { return Org + Dir * t; };

};

inline Vector Vector :: operator - () const

{

return Vector ( -x, -y, -z );

}