Re: [osg-users] How to know when a geode is visible by the camera?
Thrall, Bryan wrote: You could attach a DrawCallback to the Geode's Drawables, which would be called each time that Drawable is rendered. Make sure your callback makes the call on the Drawable to actually render it, though! Alternatively, you could add a CullCallback to the Geode, and launch the timer when the Geode is not culled (you'd want to use the same culling logic that would normally happen; see osgUtil::CullVisitor). OK I tried both of your solution and finally choose one. I chose the CullCallback because you can use it directly on a Node object while the DrawCallback is implented into the Drawable objects and in my case I have many Drawable into one Geode, moreover I created my own node type for this project that contains two distinct Geodes but one cannot be manipulated. Thank you so much for your help. OSG is a very powerful tool but hard to learn with its hundreds of classes and more subclasses ;) See Ya Adrien -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9274#9274 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to know when a geode is visible by the camera?
Thanks for the tip and sorry to answer you so late. I'll try your solution this afternoon and tell you my feedback. OSG is very powerful but, in my opinion, so huge that it's difficult to know every functionality. It also too less documented, but that's only my opinion. Anyway, thanks for your help ;) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9086#9086 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] How to know when an geode is visible bye the camera?
Hi everybody, I have to develop an OSG application with timer trigger. Each object (ie. Geode) into my scene have to launch a timer when there are displayed (ie. in front of the camera, visible, showed or whatever you call it). When the timer is done, object have to trigger a function. My problem is to know when an object is visible by the camera. Is there any way to do it with OSG? I'm a old beginner with OSG (ie. a beginner since 6 month now :P) Thank you so much for your help Adrien -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8783#8783 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
