On Sun, 2011-10-30 at 09:09 +0100, Stefanos Kougiou wrote: > Hi, > > I am building an application using OSGARt and I recently tried to use the > example: osgwidgetlabel to show some static labels on the viewer. > > I followed the procedure as in the example and the labels were visible on the > screen. The problem is that my testcube vanished as if the tracker could not > recognize it on the webcam stream. > > I found out that the camera was the problem, specifically the setup. > > To enable the widgets I created a window manager and added the labels. Then I > used the code from the function createOrthoCamera. > > osg::Camera* camera = new osg::Camera(); > > camera->getOrCreateStateSet()->setMode( > GL_LIGHTING, > osg::StateAttribute::PROTECTED | osg::StateAttribute::OFF > ); > > camera->setProjectionMatrix(osg::Matrix::ortho2D(0.0, width, 0.0f, > height)); > camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF); > camera->setViewMatrix(osg::Matrix::identity()); > camera->setClearMask(GL_DEPTH_BUFFER_BIT); > camera->setRenderOrder(osg::Camera::POST_RENDER); > > After the creation of the camera I used the standard procedure of OSGart, > meaning I added the tracker and the video stream. > > camera -> addChild(arTransform.get()); > camera -> addChild(videoBackground.get()); > > I know that the camera creation in OSGart must be done through the > calibration object -> osgART::Calibration > > so I think it is normal that the OrthoCamera Settings cannot function > correctly. > > Is there a way to make something like this to work?Does anyone know if there > is any documentation on the osgWidget objects? Any help would be appreciated.
How many total cameras are in your scene? Geometry/Geodes in osgWidget are no different than any other part of OSG, so you just need to make sure all of your objects expect to be viewed the same way. I've never used osgArt, so I can't really comment more beyond that... if the two kits are using different setups though, just try to keep them in sync. > Thank you for your time! > Stefanos > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=43632#43632 > > > > > > _______________________________________________ > 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
