Hi Ralf,

osg-submissions is for actual code changes/fixes not general discussion,
the best place for this on osg-users mailing list/forum.  Could you repost
on osg-users and I'll answer there.

Thanks,
Robert

On 14 August 2017 at 08:06, Ralf Habacker <[email protected]> wrote:

> Hi,
>
> for
> http://www.openscenegraph.org/index.php/gallery/use-cases/189-fm-profil
> we are trying to add animation trigger support to the scene by a
> specific plugins. Animation trigger support means to start an animation
> if the user clicks a specific object.  The recent implementation uses a
> dedicated pick handler to be called if a user selects an object and
> starts an animation by using the preset class
> AnimationViewerModelController. The connection between the trigger
> object and the related animation has been designed by using a specific
> object name postfix including the animation name to make the pick
> handler to find the related animation. The animation itself is created
> with blender and exported with the osgexport plugin
> (https://github.com/cedricpinson/osgexport).
>
> The pick handler needs to be added to the viewer, which is normally
> instantiated in the main application. Because we need to support several
> viewers and we do not want to patch all related viewer (some of them are
> 3rdparty like https://github.com/ChrisDenham/osgopenvrviewer) we are
> looking for a way to place all this mentioned stuff into an osg plugin,
> which could be loaded by any viewer by appending the plugin extension
> (which is animtrigger) to the model files e.g. osgviewer
> test.osgt.animtrigger.
>
> The mentioned pick handler needs to be added to the viewer like shown below
>
>     AnimationPickHandler *pickHandler = new AnimationPickHandler();
>     viewer->addEventHandler(pickHandler);
>
> To have it in a plugin the plugin needs access to the global viewer
> instances, which is not possible with recent code and I'm looking for a
> way to add such support to osg.
>
> From my recent osg knowledge I would say that one of the available
> viewer classes needs to be extended to register itself into some global
> accessable list or "viewer manager" class.
>
> Are there any hints for implementing this ?
>
> Regards
> Ralf
>
>
>
>
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