On Wed, 22 Apr 2020 at 11:10, OpenSceneGraph Users <
osg-users@lists.openscenegraph.org> wrote:
> Worth pointing out that if you don’t want any camera manipulator, you can
> just call setCameraManipulator(NULL) on each of the Viewer’s views:
>
> Views views;
> pViewer->getViews(views);
> *for *(Views::iterator it = views.begin(); it != views.end(); it++) {
> (*it)->setCameraManipulator(NULL);
> }
>
The default TrackballManipulator is only added by the Viewer::run() method
when there are no other means for setting the view matrix, so if you don't
use the Viewer::run() convenience method and instead roll hour own frame
loop then you won't get the fallback TrackballManipulator being added.
To replace the viewer::run() usage all you have to do is:
viewer.realize();
while (!viewer.done())
{
viewer.frame();
}
You can also break the viewer.frame() down into it's constituent parts.
Have a look at the Viewer::run(), frame() methods to demystify what's
happen in these convenience methods.
Cheers,
Robert
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