Re: [Interest] sin wave with QPainterPath between two points

2017-07-20 Thread 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 > > : > > You can just compute the sine directly : > >for(int i = 0; i < width; i++) > >{ > > > > int x = i; > > int y = height

Re: [Interest] sin wave with QPainterPath between two points

2017-07-20 Thread Elvis Stansvik
2017-07-20 10:30 GMT+02:00 Patrick Stinson : > Also it should be between two arbitrary points, so the sine wave may go from > top-right to bottom left, for example. Right, but that's just a transformation of the bezier control points once you have them. Elvis > > On Jul

Re: [Interest] sin wave with QPainterPath between two points

2017-07-20 Thread Patrick Stinson
Also it should be between two arbitrary points, so the sine wave may go from top-right to bottom left, for example. > On Jul 20, 2017, at 1:28 AM, Elvis Stansvik wrote: > > 2017-07-20 10:23 GMT+02:00 Jean-Michaël Celerier >

Re: [Interest] sin wave with QPainterPath between two points

2017-07-20 Thread Elvis Stansvik
2017-07-20 10:23 GMT+02:00 Jean-Michaël Celerier : > 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); >

Re: [Interest] sin wave with QPainterPath between two points

2017-07-20 Thread Jean-Michaël Celerier
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); } --- Jean-Michaël Celerier http://www.jcelerier.name On Thu, Jul 20, 2017 at