Hi Michael, osgViewer::CompositeViewer is the appropriate tool for this type of work, although you can use a slave camera in osgViewer::Viewer to as well, but this isn't as logically clean. The osghud examples provide a range of examples of use of an iscene graph camera, a slave camera, and a separate view - its for doing a HUD but the ideas are similar.
As to why it isn't working for you, but best guess is that there is a rendering order issue with the cameras - the full screen view rendering after the insert view. osg::Camera has support for specifying the rendering order, so try something like insert_camera->setRenderOrder(osg::Camera::POST_RENDER); You can also provide an int to setRenderOrder as a second parameter to help differentiate between multiple post/pre draw cameras. Robert. On Nov 17, 2007 3:54 AM, Berg, Michael <[EMAIL PROTECTED]> wrote: > I'm trying to use OSG 2.2 to create a main display of the primary scene > with a smaller "picture-in-picture"-style display of a completely > different scene in one of the corners. > > The few examples that I've found so far have been for the older OSG 1.2 > (using the old Producer interface). > > I initially looked at using a slave camera, but got the impression from > some mailing list postings and the API that that was for a different > view of the same scene. > > Based on that and other mailing list posts, I've been trying to use the > new CompositeViewer. > I've tried running the example "osgcompositeviewer" executable with > every combination of the -1, -2, and -3 flags possible from the code, > but I can only ever get it to show one scene on my single display. > http://www.openscenegraph.org/projects/osg/browser/OpenSceneGraph/trunk/examples/osgcompositeviewer/osgcompositeviewer.cpp > > If I use completely separate windows in my code, I can get each scene to > show up in a separate windows, but this isn't what I want. > > By using an osg::GraphicsContext::Traits and > view->setUpViewOnSingleScreen(0), I've been able to get one scene to > show up in only the specified portion of the monitor, but I still can't > get two scenes on the monitor at the same time. > > Below is a very stripped down skeleton of the basic code I've been > working with and trying to add different osg::GraphicsContext::Traits > and Viewports too. > > ========== > #include <osgViewer/CompositeViewer> > #include <osgViewer/Viewer> > #include <osgViewer/ViewerEventHandlers> > > #include <osgDB/ReadFile> > > #include <osgGA/GUIEventHandler> > #include <osgGA/StateSetManipulator> > > > int main (void) > { > osg::ref_ptr<osg::Node> cessna = osgDB::readNodeFile("cessna.osg"); > osg::ref_ptr<osg::Node> cow = osgDB::readNodeFile("cow.osg"); > > osgViewer::CompositeViewer viewer; > > // Main scene (fullscreen on a 1600x1200 screen) > { > osg::ref_ptr<osgViewer::View> view = new osgViewer::View(); > view->setSceneData(cessna.get()); > > viewer.addView(view.get()); > } > > // Other scene in one corner ("picture-in-picture" style) > { > osg::ref_ptr<osgViewer::View> view = new osgViewer::View(); > view->setSceneData(cow.get()); > view->getCamera()->setViewport > (new osg::Viewport(0, 512, 0, 512)); > > viewer.addView(view.get()); > } > > return (viewer.run()); > } > ========== > > I've tried putting the cessna in a viewport that doesn't overlap with > the cow viewport, but I only ever see either a fullscreen cessna. > > Am I one the right track, or am I completely off base here? > > Any pointers on how to achieve my desired picture-in-picture view of two > separate scenes would be greatly appreciated. > > - Michael Berg > > _______________________________________________ > 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
