Hi, The problem is that I can't find any osgTerrain:Terrain node in the file generated by VPB.
The following command always returns NULL: osgTerrain::Terrain* testNode = findTopMostNodeOfType<osgTerrain::Terrain>(terrainNode); /David -----Ursprungligt meddelande----- Från: [email protected] [mailto:[email protected]] För J.P. Delport Skickat: den 26 februari 2009 10:20 Till: OpenSceneGraph Users Ämne: Re: [osg-users] How to use setSampleRatio on terrain generated with VPB? Hi, have a look at the osgmultitexturecontrol example. Search for setSampleRatio. jp David Karlsson wrote: > Hello, > > I'm having problem with my terrain generated using Virtual planet builder. > Basically, what I want to do is to control the resolution/lod-scale of the > rendered terrain. If I simply add the node to the scene graph, the terrain is > rendered using the most detailed lod-level very far away from the camera > resulting in a lot of unnecessary geometry: > > http://www.student.itn.liu.se/~davka531/render_wireframe2.jpg > > I found out that I can control this by using setLODScale(...) on the camera, > but this will unfortunately change the behaviour of all lod-nodes in the > scene - not only the level of detail of the terrain. > > Instead I tried to use setSampleRatio(...) on the terrain node. The problem > in this case is that I can't find a osgTerrain::Terrain node in the .ive file > generated from vpb. All I got are osgTerrain::TerrainTile nodes, and I can't > get the osgTerrain::TerrainTile::getTerrain(...) functions to return a valid > pointer. What have I missed? Aren't TerrainTiles supposed to be connected to > a Terrain node? > > Some addtional info: > > The command used to build the terrain: > > osgdem.exe --geocentric --TERRAIN --PagedLOD > --max-visible-distance-of-top-level 200000 --layer 0 -t dir1 --layer 1 > -t dir2 --layer 2 -t dir3 -d heightDir -l 10 -o terrain.ive > > OSG version: 2.8.0 > VPB version: 0.9.9 (revision 953) > > Finally, I would like to say thank you to the osg community for helping me > out with some of my previous posts. Very appreciated! > > /David > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph. > org > -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
