Re: [osg-users] Bug in OSG? getMatrix() and setByMatrix() is not enough to transrer camera state
Hi Dan, It was never my intention that the osgGA::CameraManipualtor would become THE way to manage cameras in OSG users applications, just a convenient tool for most OSG examples and basic OSG applications. They have kinda taken on a bit of life of their own, beyond what really the merit they have. So... rather than trying to make a square peg fit a round hole and try to make the existing CameraManipualators fit your needs I'd suggest you consider what you needs are for your own application. How do you want to manage camera control and interaction? If the osgGA camera manipulators don't fit the bill then don't feel uneasy about just rolling your own camera management to do things exactly how you require of them. Cheers, Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Bug in OSG? getMatrix() and setByMatrix() is not enough to transrer camera state
For now, existing manipulators does fit. Well... almost :) I have an idea to write my own, but for quick-n-dirty concept existing will be ok. Cheers, Dan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=62623#62623 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Bug in OSG? getMatrix() and setByMatrix() is not enough to transrer camera state
Thanx, Robert! Get it. I suppose, the most convenient way then - is to subclass KeySwitchMatrixManipulator and override handle() method. My app knows, what manipulators will be added to KeySwitcher, and will perform all required additional settings during switch. Cheers, Dan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=62621#62621 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Bug in OSG? getMatrix() and setByMatrix() is not enough to transrer camera state
Hi Dan, The getMatrix/setByMatrix methods in the CamaraManipulators might be convinient and sufficient for switching between some manipulators but there are too many settings in some of the manipulators to be able to set it purely from a 4x4 matrix so the manipulator has to make a guess at what might be intended. For instance a manipulator that uses a look distance, centre of rotation and look vector direction isn't able to compute the look distance from a 4x4 matrix, there simply is too my unknowns for the constraints available. So it's not a bug but a mathematical limitation. Robert. On 5 February 2015 at 12:00, Dan Shebounin danil.shebou...@gmail.com wrote: I have discovered, that when working with manipulators, it is not enough to call getMatrix() and setByMatrix(), when switching between manipulators, say, with KeySwitchManipulator. You can try it: run osgsimulation example and try to switch between manipulators with '1' and '2' keys. The camera become crazy. I do not know the source code well, but suppose, that some mean should be created, that notifies manipulator, when it is switched in and out. Cheers, Dan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=62609#62609 ___ 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] Bug in OSG? getMatrix() and setByMatrix() is not enough to transrer camera state
I have discovered, that when working with manipulators, it is not enough to call getMatrix() and setByMatrix(), when switching between manipulators, say, with KeySwitchManipulator. You can try it: run osgsimulation example and try to switch between manipulators with '1' and '2' keys. The camera become crazy. I do not know the source code well, but suppose, that some mean should be created, that notifies manipulator, when it is switched in and out. Cheers, Dan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=62609#62609 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
