so everytime the keyboardhandler is called, the camera matrix is updated through this function ?
not really, this apply method is called on update traversal of the scenegraph. the keyboard handler is updating your objects .... -Nick On Thu, May 20, 2010 at 9:49 PM, Trajce (Nick) Nikolov < [email protected]> wrote: > apply is called automatically by the internals of osg, you dont have to > call it. In your camera apply you have to set the view matrix of the camera. > like > > virtual void apply(osg::Node* node, osg::NodeVisitor* nv) > { > osg::Camera* camera = dynamic_cast<osg::Camera*>(node); > osg::Vec3 eye; > osg::Vec3 center; > osg::Vec3 up; > camera->getViewMatrixAsLookAt(eye,center,up); > > camera->setViewMatrixAsLookAt(eye,myObjectPosition,up); > > traverse(node); > > } > > so your camera update callback need to know about your object position. and > you only set the update callback and thats it :) > > > -Nick > > > > On Thu, May 20, 2010 at 8:37 PM, Sanat Talmaki <[email protected]>wrote: > >> I tried to implement the apply function as below, most of the examples >> just had this basic implementation: >> >> void CameraFollowMyNodeCallback::apply(osg::Node* node, osg::NodeVisitor* >> nv) >> { >> osg::Camera* camera = dynamic_cast<osg::Camera*>(node); >> traverse(camera, nv); >> // Here you set from the snippet bellow >> } >> >> so everytime the keyboardhandler is called, the camera matrix is updated >> through this function ? >> >> Thanks >> >> ------------------ >> Read this topic online here: >> http://forum.openscenegraph.org/viewtopic.php?p=28089#28089 >> >> >> >> >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > >
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