Wishlist/Improvement suggestion: "Snap to Horizon"

[Trost Looser]

Hi everyone,

I like the new feature of the vertical offset allowing to see more of the sky and less of the landscape. As a further improvement I like to suggest introducing a new option of "stabilizing the view around the flat horizon" when dragging the sky with the left mouse button. The snap point would be the point when the horizon is absolutely flat with no curvature. This occurs at a certain point with most of the available projections. Around this point the mouse should become less sensitive to vertical mouse movement (vertical movement only) and ignore vertical movement to a certain extent. This would allow the user to easily pan the view horizontally keeping the horizon flat. Only if the user moves the mouse more up or down beyond a certain threshold, the view could "unsnap" and return to normal mode as it is right now.
A lot of times I have the horizon flat looking in one direction, then drag the the sky to pan the view horizontally and having to bring the horizon flat again when looking in the new direction. This "snap to horizon" could be a nice feature I think. I hope you got the idea.

Once again, this is only a suggestion for improvement. I am interested to see how you guys are thinking about this.

Thanks
Trost

[gzotti (georg-zotti)]

Such zero-ing in is better done with scripts. You could write a script along the idea of "getAzimuth; moveto(azimuth, 0)" and assign this to a key. If you just use the keyboard arrowa left/right, you don't change altitude. Other option, some shift/ctrl-mousedrag combination? Not before summer, though (or somebody else please).

[Alexander Wolf (alexwolf)]

The bug report was moved to https://github.com/Stellarium/stellarium/issues/426