///
/// Returns the horizontal component of the line's vector.
///
/// **See also:** [`dy()`]
/// [`point_at()`]
Returns the horizontal component of the line's vector.
Returns the horizontal component of the line ' s vector .
pub fn dx(&self) -> f32 {
        let (obj_data, funcs) = self.get_line_f_obj_funcs();
        unsafe {
            let ret_val = ((*funcs).dx)(obj_data);
            ret_val
        }
    }
pub fn dx ( & self ) -> f32 { let ( obj_data , funcs ) = self . get_line_f_obj_funcs ( ) ; unsafe { let ret_val = ( ( * funcs ) . dx ) ( obj_data ) ; ret_val } }
Returns the horizontal component of the line's vector.
Returns the horizontal component of the line ' s vector .
&self