Hi Mario, The viewer doens't know that you want it to update the camera position when you add/remove elements to the scene graph. You'll need to call home/set home on the viewer. FYI pressing ' ' simply calls home on the camera manipulator, the viewer.home() will do the same.
Robert. On 9/26/07, Mario Valle <[EMAIL PROTECTED]> wrote: > I create and display an empty scene and later add my model to it. > It works, but the camera position is not reset after adding the model, > so half of it lies outside the screen. Pressing space obviously reset > the camera position and all my model appears on the screen. > > What I'm doing is: > sceneRoot = new osg::Group; > viewer->setSceneData(sceneRoot.get()); > ... and later after some GUI selection ... > osg::ref_ptr<osg::Group> myscene = new osg::Group; > ... fill myscene ... > sceneRoot->addChild(scene.get()); > > I tried various combination of dirtyBound() and computeBound() on > sceneRoot and myscene without success. > > Also trying to explicitly set the camera position as below seems to have > no effect: for example I change the eye position but the scene > looks always the same. > const osg::BoundingSphere& boundingSphere= scene->getBound(); > osg::Vec3 eye = boundingSphere._center+osg::Vec3(0.0f, -3.5f * > boundingSphere._radius, 0.0f); > osg::Vec3 center = boundingSphere._center; > osg::Vec3 up = osg::Vec3(0.0f, 0.0f, 1.0f); > viewer->getCamera()->setViewMatrixAsLookAt(eye, center, up); > > The only thing that makes a difference is to move the > viewer->setSceneData(sceneRoot.get()); statement after my model load, > but this does not works if I want an empty scene that is later filled. > > The application is derived from osgviewerWX on WinXP with osg 2.1.9 > Thanks for your suggestions! > mario > > -- > Ing. Mario Valle > Visualization Group | http://www.cscs.ch/~mvalle > Swiss National Supercomputing Centre (CSCS) | Tel: +41 (91) 610.82.60 > v. Cantonale Galleria 2, 6928 Manno, Switzerland | Fax: +41 (91) 610.82.82 > > _______________________________________________ > 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
