39 	Point operator+(const Point &P, const Vector &v)  in operator +()  argument
41 		return Point(P.x + v.x, P.y + v.y, P.z + v.z);  in operator +()
44 	Point operator-(const Point &P, const Vector &v)  in operator -()  argument
46 		return Point(P.x - v.x, P.y - v.y, P.z - v.z);  in operator -()
49 	Vector operator-(const Point &P, const Point &Q)  in operator -()  argument
51 		return Vector(P.x - Q.x, P.y - Q.y, P.z - Q.z);  in operator -()
54 	Point operator*(const Matrix &M, const Point &P)  in operator *()  argument
56 		return Point(M(1, 1) * P.x + M(1, 2) * P.y + M(1, 3) * P.z + M(1, 4),  in operator *()
57 		             M(2, 1) * P.x + M(2, 2) * P.y + M(2, 3) * P.z + M(2, 4),  in operator *()
58 		             M(3, 1) * P.x + M(3, 2) * P.y + M(3, 3) * P.z + M(3, 4));  in operator *()
61 	Point operator*(const Point &P, const Matrix &M)  in operator *()  argument
63 		return Point(P.x * M(1, 1) + P.y * M(2, 1) + P.z * M(3, 1),  in operator *()
64 		             P.x * M(1, 2) + P.y * M(2, 2) + P.z * M(3, 2),  in operator *()
65 		             P.x * M(1, 3) + P.y * M(2, 3) + P.z * M(3, 3));  in operator *()
68 	Point &operator*=(Point &P, const Matrix &M)  in operator *=()  argument
70 		return P = P * M;  in operator *=()
73 	float Point::d(const Point &P) const  in d()
75 		return Vector::N(*this - P);  in d()
78 	float Point::d2(const Point &P) const  in d2()
80 		return Vector::N2(*this - P);  in d2()
83 	float Point::d(const Point &P, const Point &Q)  in d()  argument
85 		return Vector::N(P - Q);  in d()
88 	float Point::d2(const Point &P, const Point &Q)  in d2()  argument
90 		return Vector::N2(P - Q);  in d2()