Ocular Plugin: Mouse Navigation

[Astro-Martin]

-->Ocular Plugin: Mouse Navigation disabled in Ocular View

Expected Behaviour

Ocular View should not disable 'mouse navigation'
You can use the arrow keys to shift the image;
However, there are no arrow keys on a tablet PC.
'Image sensor frame' and 'Telrad sight' do not disable 'mouse navigation'

Actual Behaviour

Mouse navigation is enabled in the main application.
When switching to 'Ocular View', mouse navigation gets disabled.

Steps to reproduce

Enable mouse navigation in main application.
Switch to 'Ocular View', Check settings; mouse navigation is disabled

System

• Stellarium version: stellarium-0.20.3-win64.exe
• Operating system: windows 10 64-bit [Version 10.0.19041.508]
• Graphics Card: Intel(R) HD Graphics 4000
• Screen type (if applicable): 1366x768

Logfile

If possible, attach the logfile log.txt from your user data directory. Look into the Guide for its location.

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[alex-w]

You can freely use mouse to shift the view in the eyepiece mode

[gzotti]

This is deliberate. You can select a new target, and it will be centered.

[Astro-Martin]

You can freely use mouse to shift the view in the eyepiece mode

Sorry no. I can not.

[Astro-Martin]

This is deliberate. You can select a new target, and it will be centered.

That's what I thought. But it would be nice if the user could configure it.
And why then 'Image sensor frame' and 'Telrad sight' do not disable 'mouse navigation'?

[alex-w]

You can freely use mouse to shift the view in the eyepiece mode

Sorry no. I can not.

Why? I can do it freely

[gzotti]

On Windows, you cannot drag the window when in Oculars mode.

[Astro-Martin]

You can freely use mouse to shift the view in the eyepiece mode

Sorry no. I can not.

Why? I can do it freely

Don't know why. It doesn't work for others in our forum either

[alex-w]

Don't know why. It doesn't work for others in our forum either

Please try double-click by any celestial object within ocular FOV

[gzotti]

Yes, jump from object to object. No free drag. And I think this is deliberate and intentional.

[Astro-Martin]

On Windows, you cannot drag the window when in Oculars mode.

so it works on linux but not on windows?

[gzotti]

On WSL (Ubuntu under Windows) it works exactly as described for Windows, so I assume it works as described by me above also under native Linux. BTW only objects selected within the view circle are clickable. This is also intentional.

[alex-w]

No mouse drag, but yes for jumping by selection

[Astro-Martin]

I still think it's a bug, because 'Image sensor frame' and 'Telrad sight' don't disable mouse navigation.
That is inconsistent.

[alex-w]

I still think it's a bug, because 'Image sensor frame' and 'Telrad sight' don't disable mouse navigation.

This is not a bug

[gzotti]

This allows fine framing in sensor view. And a Telrad is usually attached on a Dobson which can also be shifted freely.
This behaviour is fully intended and has been honed for a decade or more.

[Astro-Martin]

But that is also just an 'opinion'

[axd1967]

Just to be sure: with "mouse navigation" Martin means dragging with the mouse, right?

The core issue here is that (apparently) a tablet PC has no arrow keys - so I assume we are talking about a touch-sensitive screen and there is no keyboard (?), and on-screen gestures do not include simple left/right/up/down inputs. (Martin might want to add a model name or a picture of that specific Tablet PC.)

Note that if there is no visible (selectable) object, clicking in an eyepiece view does nothing, IMHO this is a needless limitation. The idea could be that the view just centers on the clicked position if there is no nearby object. Sometimes a user just wants to centre an ocular circle over several objects, the workaround is then to use keyboard navigation for this. And this might not be possible on a Tablet PC.

[Astro-Martin]

Yes. I use google translate so it might be difficult for you to understand ...
In main application "enable mouse navigation" ist enabled.
If you switch to the 'eyepiece mode' and look at the settings again, the option is disabled.
You can set the option again, but if you switch to a different eyepiece, the setting is gone again.

I think it would be easy to implement so that the user can decide how the system should behave in this regard.
An entry in the 'ocular.ini' file. 'Disable_mouse_navigation' true / false

[gzotti]

A tablet PC fails to fulfill a minimum system requirement:

• keyboard

[Astro-Martin]

This is about "mouse navigation", not the keyboard. That was just an example. It is not logical that the operation of the software suddenly changes at one point.
I think it would be easy to implement so that the user can decide how the system should behave in this regard.

[gzotti]

Can you tell me the application case, benefit and purpose of not centering the ocular view on a visible object?
In Ocular view, the operation of the software changes also in other respects: E.g. You get information about how an object viewed with an optical instrument will appear in a circular-view eyepiece. Limiting magnitude can be limited to what the telescope may yield.

If really absolutely needed, you can still Shift-click to set and center on a marker anywhere in the void.

BTW this behaviour has been implemented on purpose in 2010. Just get used to it.