public function scalarTripleProduct(Vector3D $second, Vector3D $third) : float
    {
        return $this->dotProduct($second->crossProduct($third));
    }
public function scalarTripleProduct(Vector3D $second, Vector3D $third) : float
    {
        return $this->dotProduct($second->crossProduct($third));
    }
public function scalarTripleProduct ( Vector3D $ second , Vector3D $ third ) : float { return $ this -> dotProduct ( $ second -> crossProduct ( $ third ) ) ; }
Computes the scalar triple product of this and two other Vectors.

@param   Vector3D    $second     The second Vector of the triple product.
@param   Vector3D    $third      The third Vector of the triple product.
@return  float                   The scalar triple product of the three Vectors.
Computes the scalar triple product of this and two other Vectors .