[osg-users] How to actually play animation in osgt file

[Julien Valentin]

Hi
Have a look at osganimationviewer example
You can use it to check import have worked as expected and it's code tell you how to use AnimationManager
Cheers


Warren93 wrote:
> I am trying to render an animated model in an X-Plane 11 plugin using OSG 3.6.3 (using Viewer::setUpViewerAsEmbeddedInWindow and glEnableClientState). I can see the model, but the animation does not play. (The model was exported from Blender using the osgexport plugin).
> 
> This is the code I have to verify that there actually is an animation in the exported .osgt model:
> 
> 
> Code:
> osg::ref_ptr<osg::Group> osgModelGroup = dynamic_cast<osg::Group*>( osgModelNode.get() );
> if (osgModelGroup) {
>     osgAnimation::BasicAnimationManager* animationManager = dynamic_cast<osgAnimation::BasicAnimationManager*>(osgModelGroup->getUpdateCallback());
>     if (animationManager) {
>         std::cout << "got animation manager\n";
>         const osgAnimation::AnimationList& animations = animationManager->getAnimationList();
>         for (int i = 0; i < animations.size(); i++) {
>             anim = animations[i].get();
>             animDuration = anim->getDuration();
>             osg::Object* animObj = dynamic_cast<osg::Object*>(anim);
>             std::string animName = "";
>             if (animObj)
>                 animName = animObj->getName();
>             std::cout << "found an animation '" << animName << "' with duration " << animDuration << "\n";
>             animationManager->playAnimation(anim); // does nothing
>             std::cout << "animation has " << anim->getChannels().size() << "channels\n";
>         }
>     }
>     else {
>         std::cout << "no animation manager\n";
>     }
> }
> else {
>     std::cout << "no group for osgModelNode\n";
> }
> 
> 
> 
> The output is:
> got animation manager
> found an animation 'ArmatureAction' with duration 5.96667
> animation has 198channels
> 
> 
> And in X-Plane's draw loop, there is code to manually update the animation:
> 
> Code:
> std::cout << "Rendering OSG scene...\n";
> if (anim) {
>     animTime += 1 / 60.0f; // assuming osg interprets time as seconds and not frames...
>     if (animTime > animDuration);
>         animTime = 0;
>     anim->update(animTime);
>     std::cout << "updated animation\n";
> }
> mViewer->frame();
> 
> 
> 
> This also prints the expected output. What am I doing wrong here?
> 
> Thanks for any info.


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