Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!)
Hi Erland, You could use osgViewer::GraphicsWindowEmbedded to replace SceneView, see the osgviewerGLUT and osgviewerSDL examples. Robert. On Thu, Apr 17, 2008 at 10:13 PM, [EMAIL PROTECTED] wrote: Hei Robert. I would like to do that, but im working in a company and right now im trying to integrating osg in a existing rendring system (which handles events, mfc window, renders 3d terrain++) for rendering simple objects, so i'd rather use SceneView as for now. I think i could be using LineProjector and IntersectVisitor to find intersections..? But havent testet yet. See attachment. Erlend -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: 17. april 2008 22:22 To: OpenSceneGraph Users Subject: Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!) Hi Erland, Would it not be possible just to use osgViewer rather than SceneView. One of the points of osgViewer is that it provides more higher level functionality that users commonly require, and in doing so avoid the pain of end users having to implement themselves, and the pain involved in trying to communicate all the low level details required to teach a 3rd party how to implement something already implemented for them. Robert. On Thu, Apr 17, 2008 at 8:49 PM, [EMAIL PROTECTED] wrote: I want to pick osg objects in the scene when pressing the mouse button on them. I am using sceneView so i guess i cant use the osgViewer::View. computeIntersections and i did not find PickVisitor! Im using osg 2.3.7. So i guess i have to use IntersectVisitor. Is there a utility function for getting a line from camera towards mouse position. Or do i: camera.pos - gluUnproject screen to world erlend ___ 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 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
Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!)
Looking at that example I see that swapbuffers has to be called manually in this case, but I fail to find the place in the source where Viewer checks if it is running embedded and therefore doesn't have to call swapbuffers itself. Can you give a hint where this is? Paul Robert Osfield wrote: Hi Erland, You could use osgViewer::GraphicsWindowEmbedded to replace SceneView, see the osgviewerGLUT and osgviewerSDL examples. Robert. On Thu, Apr 17, 2008 at 10:13 PM, [EMAIL PROTECTED] wrote: Hei Robert. I would like to do that, but im working in a company and right now im trying to integrating osg in a existing rendring system (which handles events, mfc window, renders 3d terrain++) for rendering simple objects, so i'd rather use SceneView as for now. I think i could be using LineProjector and IntersectVisitor to find intersections..? But havent testet yet. See attachment. Erlend -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: 17. april 2008 22:22 To: OpenSceneGraph Users Subject: Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!) Hi Erland, Would it not be possible just to use osgViewer rather than SceneView. One of the points of osgViewer is that it provides more higher level functionality that users commonly require, and in doing so avoid the pain of end users having to implement themselves, and the pain involved in trying to communicate all the low level details required to teach a 3rd party how to implement something already implemented for them. Robert. On Thu, Apr 17, 2008 at 8:49 PM, [EMAIL PROTECTED] wrote: I want to pick osg objects in the scene when pressing the mouse button on them. I am using sceneView so i guess i cant use the osgViewer::View. computeIntersections and i did not find PickVisitor! Im using osg 2.3.7. So i guess i have to use IntersectVisitor. Is there a utility function for getting a line from camera towards mouse position. Or do i: camera.pos - gluUnproject screen to world erlend ___ 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 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 mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!)
Hi Paul, On Fri, Apr 18, 2008 at 10:18 AM, Paul Melis [EMAIL PROTECTED] wrote: Looking at that example I see that swapbuffers has to be called manually in this case, but I fail to find the place in the source where Viewer checks if it is running embedded and therefore doesn't have to call swapbuffers itself. Can you give a hint where this is? osgViewer::Viewer/CompositeViewer don't check to see if the graphics window is an embedded one, they just assume its not, and go ahead and call makeCurrent and swapBuffers on the graphics window. In the case of GraphicsWindowEmbedded these are non ops, since they nothing about the actual graphics context, only the app does they can't do anything but non ops. This does sound like a bit of recipe for disaster... but, as long as the app is running the viewer with single context and single threaded and does the makeCurrent and swapBuffers as required in its own code everything works. GraphicsWindowEmbedded is really just a an adapter that fools osgViewer into behaving more like osgUtil::SceneView, just a far more capable version that supports events, event handlers, camera manipulators, database paging, all with the same API as the fullblown osgViewer base apps. This makes it much simpler to migrate to a full scalable OSG app just a few code changes in the client app. On of the key points about osgViewer is the ability to unify a full range of usage models all within the same set of classes, this makes providing a consistent set of API and functionality across the usage range, and make it easier to move between different usage styles, and for me it makes it easier to maintain, document and support. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!)
I want to pick osg objects in the scene when pressing the mouse button on them. I am using sceneView so i guess i cant use the osgViewer::View. computeIntersections and i did not find PickVisitor! Im using osg 2.3.7. So i guess i have to use IntersectVisitor. Is there a utility function for getting a line from camera towards mouse position. Or do i: camera.pos - gluUnproject screen to world erlend ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!)
Hi Erland, Would it not be possible just to use osgViewer rather than SceneView. One of the points of osgViewer is that it provides more higher level functionality that users commonly require, and in doing so avoid the pain of end users having to implement themselves, and the pain involved in trying to communicate all the low level details required to teach a 3rd party how to implement something already implemented for them. Robert. On Thu, Apr 17, 2008 at 8:49 PM, [EMAIL PROTECTED] wrote: I want to pick osg objects in the scene when pressing the mouse button on them. I am using sceneView so i guess i cant use the osgViewer::View. computeIntersections and i did not find PickVisitor! Im using osg 2.3.7. So i guess i have to use IntersectVisitor. Is there a utility function for getting a line from camera towards mouse position. Or do i: camera.pos - gluUnproject screen to world erlend ___ 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
Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!)
Hei Robert. I would like to do that, but im working in a company and right now im trying to integrating osg in a existing rendring system (which handles events, mfc window, renders 3d terrain++) for rendering simple objects, so i'd rather use SceneView as for now. I think i could be using LineProjector and IntersectVisitor to find intersections..? But havent testet yet. See attachment. Erlend -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: 17. april 2008 22:22 To: OpenSceneGraph Users Subject: Re: [osg-users] picking osg objects using osgUtil::SceneView (cant find osgUtil::PickVisitor!) Hi Erland, Would it not be possible just to use osgViewer rather than SceneView. One of the points of osgViewer is that it provides more higher level functionality that users commonly require, and in doing so avoid the pain of end users having to implement themselves, and the pain involved in trying to communicate all the low level details required to teach a 3rd party how to implement something already implemented for them. Robert. On Thu, Apr 17, 2008 at 8:49 PM, [EMAIL PROTECTED] wrote: I want to pick osg objects in the scene when pressing the mouse button on them. I am using sceneView so i guess i cant use the osgViewer::View. computeIntersections and i did not find PickVisitor! Im using osg 2.3.7. So i guess i have to use IntersectVisitor. Is there a utility function for getting a line from camera towards mouse position. Or do i: camera.pos - gluUnproject screen to world erlend ___ 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 osgManipulator::PointerInfo pInfo; pInfo.setMousePosition(mouse_x, mouse_y); pInfo.setCamera(_sceneViewer-getCamera()); osg::ref_ptrosgManipulator::LineProjector lineProj = new osgManipulator::LineProjector; osg::Vec3 point; lineProj-project(pInfo, point); osg::ref_ptrosg::LineSegment pickLine = new osg::LineSegment(lineProj-getLineStart(), lineProj-getLineEnd()); osgUtil::IntersectVisitor visitor; //visitor.setEyePoint(_sceneViewer-getCamera()-getPosition()); visitor.addLineSegment(pickLine.get()); _root-accept(visitor); osgUtil::IntersectVisitor::HitList hitList = visitor.getHitList(pickLine.get()); osgUtil::Hit firstHit = hitList.front(); std::string id = firstHit.getDrawable()-getName();___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
