Thanks for your replying. I'm now using the release version 1.2, and I'm using it with the QT windowing system.
Now , the only way I can get something about camera is through the sceneview object in my QOSGWidget. How can I get the eye position and near far clip plane? Because I want to pass them to my GLSL fragment shader, or is there any way to get those variables directly in the GLSL shaders? I've searched the GLSL orange book, but all over the book, it assumes the eye position to be (0,0,0). If version 1.3 will clarify this camera thing, that'll really be great, and I'll definitely dig into that, but for now, I can't wait a month for that. _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Martz Sent: 2006?11?29? 11:43 To: 'osg users' Subject: RE: [osg-users] Camera Hi -- Welcome to the OSG community. OSG is currently in a state of flux. If you'll be using the latest/current CVS, I'd recommend you take a look at the examples named osgSimpleViewer* for the current approved method managing cameras with OSG. Producer had been OSG's camera library for quite some time. However, it is currently being replaced by osgViewer in the current CVS. All development moving forward should use osgViewer rather than Producer/osgProducer. The current CVS should be in a release form in about a month or so, tentatively called "OSG v1.3". Hope this helps, Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com <http://www.skew-matrix.com/> 303 859 9466 _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of xiaoshuxing Sent: Tuesday, November 28, 2006 7:52 PM To: [email protected] Subject: [osg-users] Camera Hi, everyone: I'm a beginner of OSG, and a problem about "Camera" puzzled me a lot, there're a lot of classes about camera which makes confused. Those are Producer::Camera & Producer::CameraGroup(which I think is a group of cameras), osgProducer::OsgCameraGroup,osg::CameraNode And then I read the article "Of Cameras And Scenes" of Don Burns from: <http://donburns.net/OSG/Articles/CamerasAndScenes/CamerasAndScenes.html> http://donburns.net/OSG/Articles/CamerasAndScenes/CamerasAndScenes.html don said camera should be independent with SceneGraph, which make sense to me. And there's also what puzzles me, what's the relation between osg::CameraNode and Producer::Camera, and what's the relation between osgProducer::OsgCameraGroup and Producer::CameraGroup. For example, if I want to get the eye position, which way should I use? SceneView->getCamera()->getViewMatrixAsLookAt() Or from the Producer::camera::getViewMatrix() If it's the later way, how can I get the Producer::camera object from my SceneView object? If I want to get the near far clip plane, should I use "SceneView->getCamera()->getProjectionMatrixAsPerspective()"? If so, then camera seems to be a node of the scenegraph. If not, how can I get the eye position and near far clip plane? I really need help to get me out of this bitter puzzled situation. Thanks in advance.
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