add another vector to this one . concode_field_sep double x concode_elem_sep double y concode_field_sep void setY concode_elem_sep double getX concode_elem_sep void setX concode_elem_sep double getY concode_elem_sep double distance concode_elem_sep void subtract concode_elem_sep void normalize concode_elem_sep double length concode_elem_sep double cross concode_elem_sep void scale concode_elem_sep void scale concode_elem_sep String toString concode_elem_sep void translate
void function ( Vector2d arg0 ) { x += arg0 . x ; y += arg0 . y ; }