float vector2d::operator * (vector2d vec) const {
/*! \brief Calculates the scalar product of the object it is called on and the vector in the argument and returns the result.
* \param vec vector2d to multiply with.
* \return The scalar product.
*/
return ((_x * vec.getX()) + (_y * vec.getY()));
}
vector2d vector2d::operator - (vector2d vec) const {
/*! \brief Substracts the vector from the argument from this vector and returns the result.
* \param vec Vector to substract.
* \return The difference.
*/
vector2d tmp(_x - vec.getX(), _y - vec.getY());
return tmp;
}
vector2d vector2d::operator + (vector2d vec) const {
/*! \brief Adds the vector from the argument to this vector and returns the result.
* \param vec Vector to add.
* \return The sum.
*/
vector2d tmp(_x + vec.getX(), _y + vec.getY());
return tmp;
}
vector2d vector2d::operator += (vector2d vec) {
/*! \brief Adds the vector in the argument and returns the sum.
* \param vec The vektor2d to add.
* \return The resulting vector2d.
*/
_x += vec.getX();
_y += vec.getY();
return *this;
}
vector2d vector2d::operator -= (vector2d vec) {
/*! \brief Substracts the vector in the argument and returns the result.
* \param vec vektor2d to substract.
*
* \return The resulting vector2d.
*/
_x -= vec.getX();
_y -= vec.getY();
return *this;
}