adds another 2d vector to it . concode_field_sep double x concode_elem_sep double y concode_field_sep Vector2D sub concode_elem_sep double getX concode_elem_sep double lengthSquared concode_elem_sep double getY concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep Vector2D normalize concode_elem_sep double length concode_elem_sep Vector2D scale concode_elem_sep String toString concode_elem_sep double dotProduct
Vector2D function ( Vector2D arg0 ) { return new Vector2D ( x + arg0 . x , y + arg0 . y ) ; }