[QGIS-Developer] QGIS 3D: navigation questions

Andreas Neumann a.neumann at carto.net
Wed Dec 13 21:54:06 PST 2017

forwarding this to the list as well.

Too early in the morning to properly use an e-mail client ;-)

On 14.12.2017 06:48, Andreas Neumann wrote:
> Hi Nyall,
> Thanks for your replies!
> On 13.12.2017 23:08, Nyall Dawson wrote:
>> On 14 December 2017 at 00:25, Andreas Neumann <a.neumann at carto.net> 
>> wrote:
>>> Hi,
>>> I think I heard several people stating that the navigation in QGIS 
>>> 3D is too
>>> fast. Nyall has a PR to slow down navigation when holding the 
>>> Ctrl-key -
>>> which unfortunately hadn't been merged to master yet.
>> I'll update based on Martin's comments, just gotta find some time...
> Thanks for merging. Currently compiling ...
>>> To me the question is: when the majority of users think that 
>>> navigation is
>>> too fast, shouldn't the default already be slower?
>> I think so too :)
> @Martin - can we do that?
>>> Other navigation issues I have:
>>> * I did not find a way to lower or raise the altitude of the 
>>> "camera" while
>>> staying it the same positions and not changing all the viewing 
>>> angles (like
>>> taking the helicopter up and down at the same position). Is there a 
>>> hidden
>>> shortcut for that?
>> Not that I can find, but we need this too. Maybe page up/page down 
>> could work?
> Page up/Page down would be awesome for this purpose. Just need to make 
> sure that the steps aren't too large (like it is currently with the 
> arrow keys)
>> I also think we need a way to modify the camera rotation without
>> altering its position. See https://issues.qgis.org/issues/17653
> Right - that is exactly what I would need as well!
>>> Is there any documentation somewhere about how the navigation should 
>>> work? I
>>> read something about support for keyboard (arrow keys) - but if I 
>>> use the
>>> arrow keys, only the main 2D canvas is panned, not the 3D view. Also 
>>> the
>>> Shift key, which should be used according to
>>> https://www.lutraconsulting.co.uk/blog/2017/10/16/buildings-in-qgis3d/ 
>>> has
>>> no effect on my machine - maybe another KDE/Plasma issue?
>> I believe this is a bug on all platforms when the canvas is docked.
>> Try undocking it.
> Confirmed. Undocking the 3d widgets brings back the arrow keys. So it 
> really is a bug with the docked state of the 3D widget. Is there an 
> issue reported on it already?
> Thanks,
> Andreas

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