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
> > _______________________________________________
> > osg-users mailing list
> > [email protected]
> > http://openscenegraph.net/mailman/listinfo/osg-users
> > http://www.openscenegraph.org/
> >
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