Hi Miroslav, I'd also recommend you check out the osgEarthUtil::ObjectPlacer class as it is meant to help you position your models using lat/lon coordinates.
Thanks! Jason On Mon, Aug 24, 2009 at 3:54 AM, Robert Osfield <[email protected]>wrote: > Hi Miroslav, > > I'm not sure where to start as I'm not sure what level of > understanding about the coordinate systems in play, it does look like > you are missing a few things as your transform certainly isn't > relevent to a Earth Center Earth Fixed (ECEF) coordinate system like > osgEarth sets up typically. > > The best I can do is recommend you read up on the web about ECEF, and > have a look at the osgsimulation example as it places a loaded model > around a ECEF globe. > > Robert. > > On Mon, Aug 24, 2009 at 8:20 AM, miroslav > karpis<[email protected]> wrote: > > Hi, > > > > please can you help me with this? I have a node globe (from osgEarth). > All I want now is add a new model (for example helicopter) and place it on > top of the surface of the globe and set camera so that it points like from > the helicopter model..... > > > > I have tried MatrixTransfrom, but most probably am not using it right... > > > > Here is what I made until now..(I'm not able to see both nodes together. > only globe, or helicopter...) > > > > > > Code: > > > > osg::Group* root = new osg::Group(); > > osg::ref_ptr<osg::Node> globe = > osgDB::readNodeFile("multiple_heightfields.earth"); > > osg::ref_ptr<osg::Node> heliNode = osgDB::readNodeFile("CH-146 > Griffon.flt"); > > > > osg::MatrixTransform* mNavTrans = new osg::MatrixTransform(); > > > > root->addChild(globe.get()); > > root->addChild(mNavTrans); > > > > double s = 100.0; > > > > osg::Quat rotation; > > osg::MatrixTransform* mModelTrans = new osg::MatrixTransform(); > > mModelTrans->preMult(osg::Matrix::rotate(-90.0f, 1.0f, 0.0f, 40.0f)); > > mModelTrans->setMatrix(osg::Matrixd::scale(s,s,s));// I have tried only > with scale but it didn't work > > > > mModelTrans->addChild(heliNode.get()); > > mNavTrans->addChild(mModelTrans); > > > > osgUtil::Optimizer optimizer; > > optimizer.optimize(root); > > > > > > > > > > > > Thank you! > > > > Cheers, > > miroslav[code] > > > > ------------------ > > Read this topic online here: > > http://forum.openscenegraph.org/viewtopic.php?p=16625#16625 > > > > > > > > > > > > _______________________________________________ > > 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 >
_______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
