Hi Robert,
Thank you for the answer. I like this method:
"One way is to create a Camera (with otho projection) and subgraph to
render the widgets and assign this Camera to the GraphicsWindow and set
the Camera's RenderOrder so it get drawn last."
As I have only to draw 2D widgets, can I create a fake camera that does
not need the scene graph interface where I can draw directly in openGL?
If I can, how should I do that?
Cheers,
Noè
On 17/08/19 15:36, Robert Osfield wrote:
> HI Noè,
>
> You can do an overall like this several ways. One way is to create a
> Camera (with otho projection) and subgraph to render the widgets and
> assign this Camera to the GraphicsWindow and set the Camera's
> RenderOrder so it get drawn last. Another way is create another View
> and then have this Camera below that.
>
> I think the osgsequence and osgtesselate examples illustrates this type
> of usage case. Do a search for Camera in the examples should illuminate
> other ways Camera's are used.
>
> To toggle on/off the widget overall simply set the Camera's NodeMask to
> 0x0 for switching it off, and back to 0xffffffff (or any non zero should
> also do) to switch it back on again.
>
> Robert.
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