code: public void moveLocation(double extrp, double vx, double vy)
      {
          checkHorizontalLimit(extrp, vx);
          checkVerticalLimit(extrp, vy);
      }
docs: Move camera by using specified vector.
  
  @param extrp The extrapolation value.
  @param vx The horizontal vector.
  @param vy The vertical vector.