Re: [Flightgear-devel] Canvas Windows PopOut

[Fernando G. L. <fer...@gm...>]

On Thu, Jul 4, 2019 at 4:55 PM Josh Davidson
<jos...@gm...> wrote:
> Would it be possible to make the Canvas Windows leave the FlightGear borderspace? Like in P3D, I can right click a window and click “Undock Window”, which then gives it its own system title bar and then I can put it on other monitors.

It's possible to do, but it's definitely not trivial. There are two
showstoppers:

- Canvas uses nested cameras, not viewer-level slave cameras. You can
only assign another GraphicsContext (another window) to slave cameras
as nested cameras inherit their GraphicsContext from the main viewer
camera. I think Tim Moore mentioned somewhere that he had a patch to
move Canvas to slave cameras, but I'm not too sure.
- CameraGroup hasn't been thought out from the beginning to support
dynamic creation of windows. At startup the property tree in
/sim/rendering/camera-group is read and the specified windows/cameras
are created. I guess supporting this would require some architectural
changes to CameraGroup.

Fernando