[Interest] sin wave with QPainterPath between two points

[Allan Sandfeld Jensen]

On Donnerstag, 20. Juli 2017 10:28:17 CEST Elvis Stansvik wrote:
> 2017-07-20 10:23 GMT+02:00 Jean-Michaël Celerier
> 
> <jeanmichael.celerier at gmail.com>:
> > You can just compute the sine directly :
> >    for(int i = 0; i < width; i++)
> >    {
> >    
> >      int x = i;
> >      int y = height / 2 + amplitude * std::sin(2 * M_PI * freq * i / width
> >      +
> > 
> > phase);
> > 
> >      path.lineTo(x, y);
> >    
> >    }
> 
> I think he wanted to avoid an approximation with straight lines and
> use cubic beziers.
> 
If he doesn't do it, Qt will just do it for him based on the bezier curves.

`Allan