Thanks for your reply Robert. I did end up stepping through and turns out
it is an issue with the EarthManipulator setting a duration for the
viewpoint change. I'll post on the osgEarth forum.
Thanks again,
Scott
On Monday, February 17, 2020 at 1:07:59 PM UTC-5, Robert Osfield wrote:
>
> Hi Scott,
>
> I don't know where the issue lies, but most likely it's in the windowing
> integration side rather than the core OSG as it doesn't look like you'll be
> relying on any of the OSG's native windowing/event handling. There might
> be an issue with osgQt, but I'm not the author of maintainer for it so will
> have to defer to others on this. Or it could be an issue with osgEarth.
>
> The best I can suggest is that you build the OSG, osgEarth, osgQt and your
> application in debug mode, then step through the code in a debugger to see
> where the control flow passes when the wheelEvent happens.
>
> Cheers,
> Robert.
>
> On Thursday, 13 February 2020 07:58:17 UTC, Scott Shaw wrote:
>>
>> I think I'm running into a bug in OSG. I've implemented my own versions
>> of mouse events in a sub-classed osgQt::GLWidget so I can redraw the 3D
>> view only when necessary:
>>
>> void Osg3dViewCM::mousePressEvent(QMouseEvent* event)
>> {
>> m_mouseDown = true;
>>
>> if (_cameraManipulator.valid())
>> {
>> osgQt::GLWidget::mousePressEvent(event);
>>
>> frame();
>> }
>> }
>>
>> void Osg3dViewCM::mouseReleaseEvent(QMouseEvent* event)
>> {
>> m_mouseDown = false;
>>
>> if (_cameraManipulator.valid())
>> {
>> osgQt::GLWidget::mouseReleaseEvent(event);
>>
>> frame();
>> }
>>
>> emit cameraChanged(_cameraManipulator->getInverseMatrix());
>> }
>>
>> void Osg3dViewCM::mouseMoveEvent(QMouseEvent* event)
>> {
>> if (_cameraManipulator.valid() && m_mouseDown)
>> {
>> osgQt::GLWidget::mouseMoveEvent(event);
>>
>> frame();
>> }
>> }
>>
>> void Osg3dViewCM::wheelEvent(QWheelEvent *event)
>> {
>> if (_cameraManipulator.valid())
>> {
>> osgQt::GLWidget::wheelEvent(event);
>>
>> frame();
>> }
>> }
>>
>> I'm using a default osgEarth::Util::EarthManipulator and clicking and
>> dragging on the view updates it without an issue rotating or panning
>> properly. For some reason, when I scroll the wheel, the frame function
>> doesn't update the view. If I click on the view after scrolling, it gets
>> updated with the zoom operation applied. Am I missing something?
>>
>> Thank you,
>> Scott
>>
>
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