Hi Tommes,
In the past the jitter has been down to fighting between the camera
manipulators and the main loop setting the view matrix. I'm afriad I
don't really have any ideas what might be up once you take this
possibility out.
As for what you can try now, I don't know. You could try your luck
with the new osgViewer library, but since I don't know what is wrong
in the first place I can't really say what might help.
Robert.
On 6/5/07, Tommes <[EMAIL PROTECTED]> wrote:
Hi Robert,
switching off all camera manipulators does not make disappear the
jitter. I create my viewer with
viewer->setUpViewer(osgProducer::Viewer::NO_EVENT_HANDLERS |
osgProducer::Viewer::HEAD_LIGHT_SOURCE) and do not add any camera
manipulators elsewhere. But I get the same unlovely effect when I move
the window. Is there another possibility? What else could I try?
Tommes
2007/6/4, Robert Osfield <[EMAIL PROTECTED]>:
> Hi Tommes,
>
> The jitter you see is most likely down to the viewer's camera
> manipulator fighting with the Producer Camera's view matrix. If you
> want to set the view matrix yourself then you'll need to switch off
> the Viewer's default camera manipulators. Use options mask in the
> Viewer::setUpViewer(options) to select what facilities you need.
>
> Robert.
>
> On 6/4/07, Tommes <[EMAIL PROTECTED]> wrote:
> > Hi Robert, hi Chase,
> >
> > thank you very much for your fast response! And yes, I'm developing a
> > Win32 application.
> >
> > Adapting the window resize behavior in my
> > MyGUIEventHandler::handle(ea,us) method works fine. Or should I move
> > this in the main Producer event loop (somewhere between
> > viewer->sync(), viewer->update(), and viewer->frame())?
> >
> > I tried to adapt the window move behavior in the same way, but this
> > produces a kind of jitter as long as I move the window. It looks as
> > though the scene is moved/rendered in the common way first and
> > "corrected" by my handle() routine afterwards. How can I avoid this or
> > is there another reason for this?
> >
> > For horizontal movements I use the following code:
> >
> > if ( ea.getEventType() == osgGA::GUIEventAdapter::FRAME )
> > {
> > ...
> > Producer::Camera* cam = _viewer->getCamera(0);
> > cam->getRenderSurface()->getWindowRectangle(x, y, width, height);
> >
> > if(_width != width) {
> > // Get matrix as view frustum
> > Producer::Matrix prodMatrix(_cam->getProjectionMatrix());
> > osg::Matrixd osgMatrix(osg::Matrix(prodMatrix.ptr()));
> > osgMatrix.getFrustum(left, right, bottom, top, near, far);
> > // Calculate differences and set new view frustum
> > sizeDiff = width - _width;
> > frustDiff = sizeDiff/_width * (right-left);
> > _cam->setLensFrustum(left, right+frustDiff, bottom, top, near, far);
> > }
> > ...
> > }
> >
> > Tommes.
> >
> >
> > 2007/6/4, Bradford, Chase <[EMAIL PROTECTED]>:
> > > If this is for a Win32 application, the code in Producer (not
> > > osgProducer) that processes WM_SIZE events and triggers the callback to
> > > add the resize event to osgGA's event queue is currently commented out.
> > > When I uncomment it and rebuild Producer, mouse coordinate tracking gets
> > > messed up because the coordinates are normalized inside the Producer
> > > event processor and again in the osgGA, but as long as a resize event is
> > > never dispatched, osgGA assumes the window is a 1x1 screen.
> > >
> > > Chase
> > >
> > >
> > > > -----Original Message-----
> > > > From: [EMAIL PROTECTED] [mailto:osg-users-
> > > > [EMAIL PROTECTED] On Behalf Of Robert Osfield
> > > > Sent: Monday, June 04, 2007 3:54 AM
> > > > To: osg users
> > > > Subject: Re: [osg-users] osgProducer::Viewer - Window resize events
> > > >
> > > > Hi Tommes,
> > > >
> > > > Producer does not generate resize events, it catches them internally
> > > > and tracks. On each new frame you can query the window dimensions and
> > > > do what you want with it. There are also some controls for the aspect
> > > > ratio of the camera lens that you could try out.
> > > >
> > > > Alternatively you could look at the new osgViewer library, it does
> > > > pass on window resize events that you can catch by attaching the event
> > > > handling to the viewer. The Camera's on the window being resized will
> > > > also be automatically be resized like in Producer, and there are also
> > > > controls of how the projection matrix is adjusted on resize.
> > > >
> > > > Robert.
> > > >
> > > > On 6/4/07, Tommes <[EMAIL PROTECTED]> wrote:
> > > > > Hello,
> > > > >
> > > > > I need to handle window resize events in my application, which is
> > > > > based on osgProducer::Viewer. I want to avoid the viewer from
> > > > > automatically scaling the scene to fit in the new window (for
> > > example
> > > > > when toggling from fullscreen to window mode). What's the best way
> > > to
> > > > > do this?
> > > > > Where does Producer handle this event? Or is this done by the OS?
> > > > >
> > > > > Any advices appreciated.
> > > > > Tommes
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