Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Hi,
I created a new class that inherits from CSplitterWndEx ( I am using the MFC
feature pack, but it should apply to CSplitterWnd )
and added these methods
virtual void StartTracking(int ht);
virtual void StopTracking(BOOL bAccept);
virtual void OnInvertTracker(const CRect rect);
If enableTrackSplitter_=false, you will no longer get the nasty trails left
over the 3D window.
void CTransposableSplitterWnd::StartTracking(int ht)
{
CSplitterWndEx::StartTracking(ht);
}
void CTransposableSplitterWnd::StopTracking(BOOL bAccept)
{
CSplitterWndEx::StopTracking(bAccept);
}
void CTransposableSplitterWnd::OnInvertTracker(const CRect rect)
{
if(enableTrackSplitter_){
CSplitterWndEx::OnInvertTracker(rect);
}
}
Cheers,
Andrew
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=64238#64238
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Hi, I've managed to solve the rubber-band selection by drawing a openscenegraph quad in screen coordinates. I used the Screen Aligned Quad tutorial from Delta3D. I hope another newbie will find this helpful: http://delta3d.org/deltawiki/index.php?title=Tutorials. I still need help with the MFC splitter window though. Thanks in advance. ... Thank you! Cheers, Lincoln -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=64216#64216 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Hi Émeric, Could you please share more information on your MFC code? Can you perhaps share the code? I'm using CDC to draw the rectangle but it keeps getting erased when the frame is redrawn. I would really appreciate your help. Thanks in advance. ... Thank you! Cheers, Kulani -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=62963#62963 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Hi Andrew, Could you please post your MFC code to handle the splitter window? I am not sure where and how you change the background of the 3D window. Which class is the 3D Window? ... Thank you! Cheers, Lincoln -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=64204#64204 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Hi, 2015-01-09 23:58 GMT+01:00 Andrew Cunningham andr...@mac.com: Hi, I finally got around to resolving these MFC/Aero issues using the following . snip Hope someone finds this helpful While I didn't hit the Aero issue you're talking about (I'm still on Windows XP), this post remains helpful as I'm getting performance issue with a similar MFC/OSG application. By contrast with the osgviewerMFC example where the cOSG class (that makes the glue between OSG and MFC) is a component of the view (CMFC_OSG_MDIView), I imagine that in your situation, this cannot be the case, as each view of your CSplitterWnd would otherwise have it's own OSG viewer/scene graph, right? I also imagine that you're using a CompositeViewer rather than a Viewer instance to manage the OSG part of your different CSplitterWnd views? Where did you put the instance of this CompositeViewer, as a member variable of the child frame? In my application, I'm relying upon a CompositeViewer, a member variable of the child frame. This child frame also has a CSplitterWnd member variable. Each view of the CompositeViewer inherits the window data from the CSplitterWnd view's HWND. With this architecture, the performances are far from stellar. Basically, the framerate is divided by the number of views. If it does matter, I'm using a separate render thread for each CompositeViewer. Since there's one CompositeViewer per child frame, there's in fact one distinct CompositeViewer by opened document. I don't know if it's the optimum architecture. For the records, I've also tried one unique CompositeViewer and render thread at the application level, shared by all the child frames/opened documents, but I was getting random crashes. But that's another story, back to the performance problem. Do you also notice performance issue with your application? I don't know where it comes from, maybe context switching as each view of the CompositeViewer inherit a different graphics context from the CSplitterWnd view? I've discarded the CSplitterWnd as the cause, as I'm getting the same kind of performance drop simply replacing the Viewer in the osgviewerMFC example with a CompositeViewer holding two views of the same scene graph. For completeness, I've also looked at the osgviewerQt example that makes use of a CompositeViewer, each view also having it's own graphics context. I'm not seeing any performance problem there on the same PC. Cheers, Émeric ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Andrew, I think you will find that not many people really dug into using MFC with OSG ( as you can tell by the deafening silence on the forum on these topics) Yes, indeed... I am using a separate CMFC_OSG_MDIView for each CView. I am not sure why you see that would be a problem. It does mean a separate Camera and separate osgViewer::Viewer etc for each CView but as you can share ,osg::Group/osg::Geometry objects as needed between scene graphs, I am not sure why this would have any downside. OK, there's the difference. You're still using an osgViewer::Viewer instance per CMFC_OSG_MDIView, while on my side, I was trying to use one osgViewer::CompositeViewer to manage all the osgViewer::View inheriting the CMFC_OSG_MDIView window data. The big difference between what I do and the OSG MFC examples is that - I am single threaded I'm running a separate render thread. I found that the osg threading mechanism seemed to be flawed, as I had 4 osg threads using 100% of the CPU even when the app was idle. Perhaps I was missing something. But it seems fundamental that , for example, the cull thread is always running and never sleeping. Great for real-time games, not so much for applications that need to be 'nice'. Could it be that you're using continuous rendering (default option) rather than on-demand rendering? You can change this with osgViewer::ViewerBase::setRunFrameScheme(osgViewer::ViewerBase::ON_DEMAND). The drawback is that you'll thus have to override the MFC stack to trigger osgViewer::View::requestRedraw() when required (e.g. OnSize). - I then completely bypass the viewer OSG event handler and handle all events using the standard MFC event mechanism. That is I handle OnPaint, OnKeyDown,OnLButtonDown etc etc and do what is needed. For example, in my OnDraw(CDC *cdc) I call viewer()-frame(); I had to do a couple of funky things to get this to work properly . I can give you more details if you want to go that way. I see. In this case, the above on-demand rendering trick won't work as ViewerBase::run() performs various tests in order to determine if osgViewer::ViewerBase::frame() should be called to redraw the display. Émeric ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Hi, I finally got around to resolving these MFC/Aero issues using the following . For drawing the selection box over a complex scene... - Capture the 3D scene image as a texture map - Turn off the 3D scene - map the texture onto a 2D quad that will in the background filling the window - While interactively drawing the zoom/selection box draw a outlined QUAD into a HUD over the 2D texture mapped quad. MFC CSplitterWnd issues - Overridde CSplitterWnd::OnInvertTracker to be a no-op to prevent 'trails' being left on the 3D window while you drag the splitter. - Handle these Windows messages for the Frame containing the CSplitterWnd ON_WM_ENTERSIZEMOVE() ON_WM_EXITSIZEMOVE() In between these two calls, handle OnDraw in the 3D window by filling the Window with a solid color ( or whatever) using GDI, not by trying to render OpenGL/OSG. Hope someone finds this helpful Cheers, Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=62278#62278 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
Yeah, I'm afraid you may have to do that. Once the double-buffer has been swapped to the screen, you can't draw on it anymore. Some implementations may allow you to hint that you want a COPY swap, which leaves the buffer still intact in the back buffer after swap, so you could draw on it, but I don't think you can guarantee it. You probably want to RTT render the main scene to a texture, then to display it, just rasterize it onto a fullscreen quad each time. This makes it efficient to draw _any_ UI elements on top of it, without having to XOR (XOR is hard to see on mid-grey colors anyway) because you're actually clearing and re-blitting the texture on each update redraw. On Tue, Sep 24, 2013 at 6:26 PM, Andrew Cunningham andr...@mac.com wrote: I am using a double-buffered window as per the OSG MFC example. traits-doubleBuffer = true; The MFC example shows a nice overlay HUD of rendering statistics. This just seems such a typical 3D UI interaction - to show a rectangular area on the screen under mouse control for selection or zooming that it surprises me there is not a canned solution. I suppose I could grab the pixel buffer and make that a static background while I draw the rectangle. It is crucial the full 3D scene be not continuously redrawn while drawing this zoom box. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=56474#56474 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel https://twitter.com/alphapixel facebook.com/alphapixel (775) 623-PIXL [7495] ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Oldie, but goodie... Aero themes and OpenGL/MFC
I am using a double-buffered window as per the OSG MFC example. traits-doubleBuffer = true; The MFC example shows a nice overlay HUD of rendering statistics. This just seems such a typical 3D UI interaction - to show a rectangular area on the screen under mouse control for selection or zooming that it surprises me there is not a canned solution. I suppose I could grab the pixel buffer and make that a static background while I draw the rectangle. It is crucial the full 3D scene be not continuously redrawn while drawing this zoom box. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=56474#56474 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
