Feature request: customizable animation speed

[mawkler]

I would like the ability to modify the speed of the scrolling animation. I don't know how difficult it would be to implement, but I would love if it were configurable by setting the duration time of the animation in milliseconds. If that's not possible, perhaps an animation factor that for instance doubles the duration of the animation if set to 2 and halves the duration if set to 0.5.

[subnut]

You might want to tweak with g:smoothie_update_interval and g:smoothie_base_speed

[mawkler]

Oh yeah that's it, thanks! I had no clue these already existed since they're not mentioned anywhere in the README and there are no helpfiles. Perhaps they should be added to the customization section in the README? :)

[psliwka]

Oh yeah that's it, thanks! I had no clue these already existed since they're not mentioned anywhere in the README and there are no helpfiles. Perhaps they should be added to the customization section in the README? :)

These actually were omitted from the README for a reason. Both are somewhat unstable:

• Changing smoothie_update_interval distorts the acceleration curve. This should not happen (it should only change the refresh rate). I have not yet identified why is that so.
• smoothie_base_speed may change its meaning drastically in the future, since the velocity curve algorithm is still WIP at this point.

I decided to hide these params from a casual user for now, until they are either fixed or replaced with more user-friendly counterparts.

[pvonmoradi]

@psliwka After latest update, I feel like the animation is somewhat "choppy" and "low-fps-like". Sorry, I can't describe it better :)

VIM - Vi IMproved 8.2 (2019 Dec 12, compiled Jan 15 2021 01:33:55)
Included patches: 1-2349

Peek.2021-01-17.15-38.mp4

[psliwka]

Note to myself: the @pvonmoradi's report came in before pushing out velocity curve tweaks (6cd5dea and 4bb75e5).

[psliwka]

@pvonmoradi: could you please clarify whether your problem appeared after vim-smoothie update, or an update of Vim itself?

[pvonmoradi]

@psliwka I'm not 100% sure, but I think after vim-smoothie update.
FWIW, here is the new animation after your most recent update:

Peek.2021-01-17.21-20.mp4

[myermakov]

Similar issue - love me more linear tweening... perhaps I'm too used to vim-smooth-scroll. I think the generous roll-off at the end is what contributes to perceived "choppiness". I ended up setting g:smoothie_speed_linear_factor=60 and g:smoothie_speed_exponentiation_factor=0.5.
tasty plugin 😋

[psliwka]

@pvonmoradi: it is likely that your issue has been fixed in f2aaab1.

[pvonmoradi]

@pvonmoradi: it is likely that your issue has been fixed in f2aaab1.

Thanks for the heads up. Just updated. Now PageUp/PageDown don't do anything. Also it seems the scroll is way faster (not as smooth/slow before).

[psliwka]

Now PageUp/PageDown don't do anything.

Ah, I escaped them incorrectly. Fixed with 3b87e35.

Also it seems the scroll is way faster (not as smooth/slow before).

It is likely that for you it used to run way slower than I intended, and now it is running the way I wanted it to run in the first place ;) It should look like that now:

Screen.Recording.2022-05-04.at.13.25.36.mov