Hi Simon, My loop was something totally independant from the camera movement. You can imagine what you want with it. And about capturing a different size, I guess no, you'll probably have to resize your image with your encogind API.
Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ Le Fri, 19 Dec 2008 17:57:15 +0100, Simon Loic <simon1l...@gmail.com> a écrit: > Thanks Jean-Sebastien, > Your reply is very helpful. I don't have the time to day to implement it but > I will try during the next week. > Of course I'm interested by your new ScreenCaptureHandler class. BTW do you > think that with this approach it's possible to have a capture resolution > different from the one of the screen? > I will give a look to ffmpeg too. > > > > > On Fri, Dec 19, 2008 at 4:40 PM, Jean-Sébastien Guay < > jean-sebastien.g...@cm-labs.com> wrote: > >> Hello Simon, >> >> Second, I tried some times ago to do an offscreen rendering but If you >>> know an easy way in osg to do it I'm interested (I think there are ways >>> based on osg::Camera::DrawCallBack). >>> >> >> There is now (since OSG 2.6) an osgViewer::ScreenCaptureHandler which you >> can use. Unfortunately it only responds to key presses right now, but you >> can subclass it like this to get it to capture programmatically: >> >> class OurScreenCaptureHandler : >> public osgViewer::ScreenCaptureHandler >> { >> public: >> OurScreenCaptureHandler(CaptureOperation* defaultOperation = 0) >> : osgViewer::ScreenCaptureHandler(defaultOperation) >> { >> } >> >> /** Capture the given viewer's views on the next frame. */ >> virtual void captureNextFrame(osgViewer::ViewerBase& viewer) >> { >> addCallbackToViewer(viewer); >> } >> }; >> >> Then in your frame loop, you can just call >> >> screenCaptureHandler->captureNextFrame(viewer); >> >> (note: I'll be sending a new version of ScreenCaptureHandler which includes >> this method soon, I had to do it for our framework recently, so it will >> probably be included in OSG after that, no need to subclass) >> >> Eventually, do you know some good (easy to handle) API for compressing >>> video? >>> >> >> Once you have images of each frame, you can just use ffmpeg to compress the >> sequence into a video. See the ffmpeg man page or web page for more >> information. >> >> Hope this helps, >> >> J-S >> -- >> ______________________________________________________ >> Jean-Sebastien Guay jean-sebastien.g...@cm-labs.com >> http://www.cm-labs.com/ >> http://whitestar02.webhop.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
