Hi Robert, Have you looked at the osgpick example?
Robert. On Tue, Oct 19, 2010 at 9:18 PM, Robert Gosztyla <[email protected]> wrote: > Hi, > > I have again basic question which is related to my previous one about terrain > editing. I can create terrain with lot of tiles, so now i want to have > posibility to choose particular tile by picking it. The way i tried to > implement is something like that: > > 1. create osgTerrain object > 2. add TerrainTiles objects to terrain > 3. create node visitor and pass terrain to it (terrain->accept) > 4. in visitor apply(osg::Geode) method i'm creating > osgUtil::LineSegmentIntersector and osgUtil::IntersectionVisitor objects > 5. passing visitor to view camera. > > And as i understand my terrain visitor visits all tiles of my terrain and > then inside terrain visitor apply method intersection visitor visits all > visible nodes of the scene testing intersection, what sounds for me as a > little nonsense. How to do it properly? I would like to do in such way: > > 1. 1. create osgTerrain object > 2. add TerrainTiles objects to terrain > 3. create node visitor and pass terrain to it (terrain->accept) > 4. in terrain visitor apply(osg::Geode) method i want to check if pick ray is > intersecting my geode. > > But how to get pick ray? I found something like osgUtil::PickVisitor, but i'm > not sure how to use it. Could somebody help with that? > > Thank you! > > Cheers, > Robert > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=32873#32873 > > > > > > _______________________________________________ > 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
