Re: [osg-users] View::setCameraManipulator
Hi Robert, I'm simply saying that setCameraManipulator should just set the camera manipulator into the view and not also set the node implicitly got from the scene data: it is not his responisibility. And that's not always a desirable behavior since in other part of the code the node should be already set to a node different from the root scene data. That means setCameraManipulator overrides the node I have already set to the manipulator (and I don't want the home position to be computed again too). In my case I'm switching manipulators and I want that each manipulator maintains its node reference and not been reset by the call setCameraManipulator. So from my point of view it's up to the programmer to set the proper node to a manipulator. Regards, Gianni -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58568#58568 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] View::setCameraManipulator
HI Gianni, On 12 March 2014 09:07, Gianni Ambrosio ga...@vi-grade.com wrote: Hi Robert, I'm simply saying that setCameraManipulator should just set the camera manipulator into the view and not also set the node implicitly got from the scene data: it is not his responisibility. And that's not always a desirable behavior since in other part of the code the node should be already set to a node different from the root scene data. That means setCameraManipulator overrides the node I have already set to the manipulator (and I don't want the home position to be computed again too). In my case I'm switching manipulators and I want that each manipulator maintains its node reference and not been reset by the call setCameraManipulator. So from my point of view it's up to the programmer to set the proper node to a manipulator. The CameraManipulator scheme is far from perfect and need a revamp, but currently all the CameraManipulator implementations assume that the Viewer sets the node to use with the CameraManipualtor, rather than assuming that the end user will set it, we can't change that without breaking the existing manipulator or user code that uses them. If the CameraManipulators don't work ideally for you as they are there is nothing stopping you from developing your own Camera management scheme in place of the CameraManipulators - osgViewer has been designed so that the osgGA CameraManipulators are just optionally, and are only used if you they are assigned by the viewer. If you want your own scheme simply set the Camera view matrices/projection matrices as you require on each new frame. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] View::setCameraManipulator
Hi, is there a place where to submit a change request for this code? Regards, Gianni -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58561#58561 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] View::setCameraManipulator
HI Gianni, The root node of scene graph is passed onto the CameraManipulator by the Viewer in setCameraManipulator() and setSceneData() to ensure that the CameraManipulator's know what the root node is so can account for it when doing calculations on home position etc. Reading between the lines I'm guessing you want to override this and have the manipulators base themselves on a node other than the root scene graph. Could you explain what you are doing and what end result you are after? Robert. On 3 March 2014 16:43, Gianni Ambrosio ga...@vi-grade.com wrote: Hi, is there a reason why View::setCameraManipulator method also sets the manipulator node? It seems that this method does more than what it states. In particular if I already set a node into the manipulator calling setManipulator erases the previous node. Regards, Gianni -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58412#58412 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] View::setCameraManipulator
Hi, is there a reason why View::setCameraManipulator method also sets the manipulator node? It seems that this method does more than what it states. In particular if I already set a node into the manipulator calling setManipulator erases the previous node. Regards, Gianni -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58412#58412 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
