Re: [osg-users] problems with CompositeViewer
Hi all, regarding the question yesterday about the problem with the compositeviewer, I attach the fragment of code that i am using. Has somebody any idea about where is the problem? Thank you very much. osg::ref_ptrosg::GraphicsContext::Traits traits = new osg::GraphicsContext::Traits; // Init the Windata Variable that holds the handle for the Window to display OSG in. osg::ref_ptrosg::Referenced windata = new osgViewer::GraphicsWindowWin32::WindowData(GetSafeHwnd()); // Setup the traits parameters traits-x = 0; traits-y = 0; traits-width = RectDLG.right - RectDLG.left; traits-height = RectDLG.bottom - RectDLG.top; traits-windowDecoration = false; traits-doubleBuffer = true; traits-sharedContext = 0; traits-setInheritedWindowPixelFormat = true; traits-inheritedWindowData = windata; // Create the Graphics Context osg::GraphicsContext* gc = osg::GraphicsContext::createGraphicsContext(traits.get()); // view 1: for 3D model /* Create the scene data */ // osgViewer::View* view1 = new osgViewer::View(); view1-getCamera()-setViewport(new osg::Viewport(traits-width/2,traits-y,traits-width/2,traits-height)); view1-getCamera()-setProjectionMatrixAsPerspective(30.0f, static_castdouble(traits-width/2)/static_castdouble(traits-height), 1.0f, 1.0f); view1-getCamera()-setGraphicsContext(gc); view1-setSceneData(BackgroundRoot); // view 2: for Background image /* Create the background image graph */ // osgViewer::View* view2 = new osgViewer::View(); view2-setSceneData(hudRoot); view2-getCamera()-setViewport(new osg::Viewport(0,0,traits-width,traits-height)); view2-getCamera()-setProjectionMatrixAsPerspective(30.0f, static_castdouble(traits-width)/static_castdouble(traits-height), 1.0f, 1.0f); view2-getCamera()-setGraphicsContext(gc); view2-setSceneData(ModelRoot); // Attach views to CompositeViewer sceneView-addView(view2); // Draw first? sceneView-addView(view1); - Original Message - From: David Oyarzun To: osg-users@lists.openscenegraph.org Sent: Tuesday, December 02, 2008 6:09 PM Subject: problems with CompositeViewer Hi all, I think I have a problem with the render order of the CompositeViewer. I am trying to program a osg-based windowed application that shows a 3D animated object centered in the right middle of the window. Moreover, it has a background image that fills all the window, including the right middle (behind the 3D model). I want that the application is modular, in the sense that depending the initial width and height fo the window, the 3D object appears always centered in the right middle. For doing that, I have created a CompositeViewer with 2 views, one of them setting the viewport to all the window and putting the background as SceneData, and the other one with the right middle size for putting the 3D object, but I only see the backgorund image. It seems like the backgorund image is always in the front, because if I delete its view, the 3D object is well positioned. Could be something related with the render order? If it is, how could I tell CompositeViewer to draw the background before the 3D model? Else, is it a good idea using the CompositeViewer for this kind of issue? Thank you in advance, David. __ Información de ESET NOD32 Antivirus, versión de la base de firmas de virus 3658 (20081202) __ ESET NOD32 Antivirus ha comprobado este mensaje. http://www.eset.com___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] problems with CompositeViewer
HI David, I'll stop being subtle about it then as you seem to have ignored my previous email which told you exactly what to do. Using two views to do what you want to do is *completely* the wrong way to tackle the problem. You task requires a single view, but with either a slave Camera or a in scene graph Camera. Please just abandon your currently code as a lost cause, and review the osghud example and learn about the different ways of using cameras. Robert. On Wed, Dec 3, 2008 at 9:25 AM, David Oyarzun [EMAIL PROTECTED] wrote: Hi all, regarding the question yesterday about the problem with the compositeviewer, I attach the fragment of code that i am using. Has somebody any idea about where is the problem? Thank you very much. osg::ref_ptrosg::GraphicsContext::Traits traits = new osg::GraphicsContext::Traits; // Init the Windata Variable that holds the handle for the Window to display OSG in. osg::ref_ptrosg::Referenced windata = new osgViewer::GraphicsWindowWin32::WindowData(GetSafeHwnd()); // Setup the traits parameters traits-x = 0; traits-y = 0; traits-width = RectDLG.right - RectDLG.left; traits-height = RectDLG.bottom - RectDLG.top; traits-windowDecoration = false; traits-doubleBuffer = true; traits-sharedContext = 0; traits-setInheritedWindowPixelFormat = true; traits-inheritedWindowData = windata; // Create the Graphics Context osg::GraphicsContext* gc = osg::GraphicsContext::createGraphicsContext(traits.get()); // view 1: for 3D model /* Create the scene data */ // osgViewer::View* view1 = new osgViewer::View(); view1-getCamera()-setViewport(new osg::Viewport(traits-width/2,traits-y,traits-width/2,traits-height)); view1-getCamera()-setProjectionMatrixAsPerspective(30.0f, static_castdouble(traits-width/2)/static_castdouble(traits-height), 1.0f, 1.0f); view1-getCamera()-setGraphicsContext(gc); view1-setSceneData(BackgroundRoot); // view 2: for Background image /* Create the background image graph */ // osgViewer::View* view2 = new osgViewer::View(); view2-setSceneData(hudRoot); view2-getCamera()-setViewport(new osg::Viewport(0,0,traits-width,traits-height)); view2-getCamera()-setProjectionMatrixAsPerspective(30.0f, static_castdouble(traits-width)/static_castdouble(traits-height), 1.0f, 1.0f); view2-getCamera()-setGraphicsContext(gc); view2-setSceneData(ModelRoot); // Attach views to CompositeViewer sceneView-addView(view2); // Draw first? sceneView-addView(view1); - Original Message - From: David Oyarzun To: osg-users@lists.openscenegraph.org Sent: Tuesday, December 02, 2008 6:09 PM Subject: problems with CompositeViewer Hi all, I think I have a problem with the render order of the CompositeViewer. I am trying to program a osg-based windowed application that shows a 3D animated object centered in the right middle of the window. Moreover, it has a background image that fills all the window, including the right middle (behind the 3D model). I want that the application is modular, in the sense that depending the initial width and height fo the window, the 3D object appears always centered in the right middle. For doing that, I have created a CompositeViewer with 2 views, one of them setting the viewport to all the window and putting the background as SceneData, and the other one with the right middle size for putting the 3D object, but I only see the backgorund image. It seems like the backgorund image is always in the front, because if I delete its view, the 3D object is well positioned. Could be something related with the render order? If it is, how could I tell CompositeViewer to draw the background before the 3D model? Else, is it a good idea using the CompositeViewer for this kind of issue? Thank you in advance, David. __ Información de ESET NOD32 Antivirus, versión de la base de firmas de virus 3658 (20081202) __ ESET NOD32 Antivirus ha comprobado este mensaje. http://www.eset.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] problems with CompositeViewer
Hi all, I think I have a problem with the render order of the CompositeViewer. I am trying to program a osg-based windowed application that shows a 3D animated object centered in the right middle of the window. Moreover, it has a background image that fills all the window, including the right middle (behind the 3D model). I want that the application is modular, in the sense that depending the initial width and height fo the window, the 3D object appears always centered in the right middle. For doing that, I have created a CompositeViewer with 2 views, one of them setting the viewport to all the window and putting the background as SceneData, and the other one with the right middle size for putting the 3D object, but I only see the backgorund image. It seems like the backgorund image is always in the front, because if I delete its view, the 3D object is well positioned. Could be something related with the render order? If it is, how could I tell CompositeViewer to draw the background before the 3D model? Else, is it a good idea using the CompositeViewer for this kind of issue? Thank you in advance, David.___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] problems with CompositeViewer
Hi David, The Camera::setRenderOrder(..) method is used to control order in which the cameras on a GraphicsWindow are rendered. In you application the wish to have a background image is not served well by creating a separate view for it. A far better solution would be to insert a Camera into the scene graph that works as HUD. See the osghud example, this would be simpler to manage, and conceptually a far better fit. Robert. On 12/2/08, David Oyarzun [EMAIL PROTECTED] wrote: Hi all, I think I have a problem with the render order of the CompositeViewer. I am trying to program a osg-based windowed application that shows a 3D animated object centered in the right middle of the window. Moreover, it has a background image that fills all the window, including the right middle (behind the 3D model). I want that the application is modular, in the sense that depending the initial width and height fo the window, the 3D object appears always centered in the right middle. For doing that, I have created a CompositeViewer with 2 views, one of them setting the viewport to all the window and putting the background as SceneData, and the other one with the right middle size for putting the 3D object, but I only see the backgorund image. It seems like the backgorund image is always in the front, because if I delete its view, the 3D object is well positioned. Could be something related with the render order? If it is, how could I tell CompositeViewer to draw the background before the 3D model? Else, is it a good idea using the CompositeViewer for this kind of issue? Thank you in advance, David. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
