Hi All, I have now completed the bulk of my work on the new osg::Callback class, this along with the more familiar callbacks like NodeCallback can now be found in the include/osg/Callback header file. You can now subclass directly from osg::Callback and attach to Node/Drawable/StateSet/StateAttribute, or use the old callback classes. These changes are now checked into svn/trunk.
With these changes the unit test of update callbacks that Pjotr wrote now generates the correct output - try osgcallback --test, you should see all 7 entries. I haven't yet done full testing of all the different ways you can add callbacks. I also have yet tested whether you can assign script callbacks to Node/Drawable via the Node::setUpdateCallback etc methods, but in theory this should now be possible. I'll test more of this tomorrow. I have to make quite a number of changes to the core OSG to get things working, but fingers crossed most users shouldn't need to make too many changes to their own code. Main issues would be if you do a osg::NodeCallback* cb = node->getUpdateCallback(), as getUpdateCallback() now returns an osg::Callback, just changing to osg::Callback* cb = node->getUpdateCallback() should mostly address the issue. Another compile issue I came across was when handling classes that use multiple inheritance and had to explicitly specifying the osg::Obejct copy construction as osg::Object used to be inherited as a virtual inheritance. Whereas now the callback subclass subclass via virtual inheritance from osg::Callback instead so you need to specify osg::Callback copy construction in place of the osg::Object entry in the subclasses copy constructor. I hope that makes sense.. Let me know if you see any problems. I have only been able to test under Linux, fingers crossed I haven't missed any OSG_EXPORT, but if I have let me know and get fixes checked in as soon as possible. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
