Hi Ulrich,
Thank you again for your patience and insight.
Your code makes absolute sense. But I still get the same result. If I have no
trackball manipulator for either view, I get a black screen. When I have set it
up for one view, only that view gets an image. My code:
Code:
osg::Group* scene = new osg::Group();
osg::Node* groundNode = NULL;
osg::Node* tankNode = NULL;
groundNode = osgDB::readNodeFile("cow.osg");
scene->addChild(groundNode);
osgGA::TrackballManipulator* Tman = new osgGA::TrackballManipulator;
// construct the viewer.
osgViewer::CompositeViewer viewer(arguments);
if (arguments.read("-2"))
{
// view one
{
osg::Camera* camera = new osg::Camera;
osgViewer::View* view = new osgViewer::View;
view->setName("View one");
viewer.addView(view);
view->setUpViewOnSingleScreen(0);
view->setSceneData(scene);
// Get the scene bounding sphere
osg::BoundingSphere bsph = scene->getBound();
// Look at the center of the scene
osg::Vec3 lookAt = bsph.center();
// Place eye at an appropriate distance 'south' of the look-at point
osg::Vec3 eyef = lookAt + osg::Vec3(0,-1,0) * bsph.radius() * 3.5f;
// Set camera view matrix
camera->setViewMatrixAsLookAt(eyef, lookAt, osg::Vec3(0,0,1));
view->setCamera(camera);
}
// view two
{
osg::Camera* camera = new osg::Camera;
osgViewer::View* view = new osgViewer::View;
view->setName("View two");
viewer.addView(view);
view->setUpViewOnSingleScreen(1);
view->setSceneData(scene);
// Get the scene bounding sphere
osg::BoundingSphere bsph = scene->getBound();
// Look at the center of the scene
osg::Vec3 lookAt = bsph.center();
// Place eye at an appropriate distance 'south' of the look-at point
osg::Vec3 eyef = lookAt + osg::Vec3(0,-1,0) * bsph.radius() * 1.5f;
// Set camera view matrix
camera->setViewMatrixAsLookAt(eyef, lookAt, osg::Vec3(0,0,1));
view->setCamera(camera);
//view->setCameraManipulator(Tman);
}
}
viewer.realize();
while(!viewer.done())
{
viewer.frame();
}
I must be missing something obvious I guess, but for me it isn't obvious (yet).
Thank you!
Cheers,
Bart Jan
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=34900#34900
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