On Tue, Apr 8, 2008 at 8:49 PM, rogx. libero <[EMAIL PROTECTED]> wrote:
> from documentation/opengl.html:
>
> "The easiest way to make an OpenGL display is to subclass Fl_Gl_Window.
> Your subclass must implement a draw() method which uses OpenGL calls to
> draw the display.
> Your main program should call redraw() when the display needs to change,
> and (somewhat later) FLTK will call draw()."
>
> I try do do a little 3d opengl animation with a sequence like:
>
> To show a number of frames:
>
> end=number of positions (frames)
> counter=0;
> while(counter<end)
> {
> do linear interpolation. %: (1/end) * counter;
> do trasformations for position;
> mywindow->redraw();
> counter++;
> }
>
> Well, I see only the last position, also if every thing seems
> to go in the right way.
>
> So, here are 2 questions:
>
> There is a way to know if draw() has finish?
> How long is "(somewhat later) FLTK will call draw()." ?
In order to let FLTK call draw, you have to yield control to fltk
(it's not multithreaded!), so at least call FL::wait or something
after mywindow->redraw();
Shai
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