#ifndef VECTOR_H
#define VECTOR_H

class VECTOR {
  double x, y, z;

public:
  VECTOR () {};

  VECTOR (double x, double y, double z)
  {
    this -> x = x;
    this -> y = y;
    this -> z = z;
  }

  VECTOR set (double x, double y, double z)
  {
    this -> x = x;
    this -> y = y;
    this -> z = z;

    return *this;
  }

  VECTOR normalize ();

  VECTOR add (VECTOR v2);
  VECTOR operator+ (VECTOR v2);

  VECTOR subtract (VECTOR v2);
  VECTOR operator- (VECTOR v2);

  VECTOR multiply (VECTOR v2);
  VECTOR operator* (VECTOR v2);

  VECTOR scalar_mult (double s);
  VECTOR operator* (double s);

  VECTOR scalar_divide (double s);
  VECTOR operator/ (double s);

  double dot (VECTOR v2);

  double sum (void);

  double length (void);

};

#endif