Hi Adrian, Personally I'd write the code to retrieve the tiles as an OSG plugin or using a Registry::ReadFileCallback.
The pager now support multiple database reading threads to the latency between request and when it's loaded needn't be long. This would simplify your code significantly and would avoid the need for subclassing of the DatabasePager. Robert. On Wed, Nov 12, 2008 at 4:06 PM, Adrian Egli OpenSceneGraph (3D) <[EMAIL PROTECTED]> wrote: > Hi all , > > One of our application is working with a derrived class of database pager. > Our class has just over written > ::requestNodeFile(const std::string& inFileName,osg::Group* group, float > priority, const osg::FrameStamp* framestamp,osg::ref_ptr<osg::Referenced> > &databaseRequest) > method. There we get a request form osgDB core (osgUtil::cull visitor) and > we generate a event to generate the right tile from a database. the event > gets handled in a second thread, once he has finish > generating the right tile, we insert the information into a list. once a > requested tile is in a liste we can make use of the common database pager > requestnodefile method. so we just call > DatabasePager::requestNodeFile(inFileName,group,priority,framestamp,databaseRequest); > so it seams to work, but unfortunatelly there are > in some cases missing requestnodefile calls, means the database pager should > still have such missing tiles, but i don't get right informed, or the > database pager doesn't page in the tiles, may there is > something wrong with the framestamp. or is there something implement to give > a maximum of time to page in a tile. ? after such a time slot there will no > longer paged in the requested tile. ? > > adrian > > -- > ******************************************** > Adrian Egli > > _______________________________________________ > 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
