Two-finger scroll moves through time instead of space • Hacker News Board

Re: Two-finger scroll moves through time instead of space

#21

Post by melloclello » Sun, Mar 05, 2017, 12:27 AM UTC

vmarsy wrote: post #4

Is that doing Ctrl+Z , Ctrl+Y in the background? Before opening the link I was thinking this was going to be a cool feature that lets you scroll through older revisions of a file in git. This, paired with a git blame GUI would be awesome. A minority report for git repos Sweet feature regardless :)

I once built a calculator app where you could two-finger swipe to undo/redo: https://appsto.re/nz/oxLx3.i

Previous/future states simply appear adjacent to one another so you can scroll through them easily.

I absolutely believe that version control history is something that needs to be treated as a dimension like any other

Re: Two-finger scroll moves through time instead of space

#22

Post by ams6110 » Sun, Mar 05, 2017, 12:47 AM UTC

HenryBemis wrote: post #20

Absolute respect to XKCD!! and never forget Little Bobby Tables!!!

Since I remap Ctrl Caps Lock on all my machines, it's especially funny to me.

Re: Two-finger scroll moves through time instead of space

#23

Post by mintplant » Sun, Mar 05, 2017, 1:37 AM UTC

necubi wrote: post #15

This is just a few lines in emacs: https://www.reddit.com/r/emacs/comments/5xi92h/a_scroll_whee...

vim:

    " scroll wheel moves through time instead of space
    " 
    set mouse=a
    nnoremap  u
    nnoremap  
    inoremap  ui
    inoremap  i

Re: Two-finger scroll moves through time instead of space

#24

Post by H4CK3RM4N » Sun, Mar 05, 2017, 1:48 AM UTC

smexy wrote: post #12

anakron wrote: post #7

Relevant xkcd - https://xkcd.com/1806/ And don't forget the alt text!

Relevant relevant xkcd - http://thomaspark.co/2017/01/relevant-xkcd/

The link only works one layer down :(

Re: Two-finger scroll moves through time instead of space

#25

Post by tedunangst » Sun, Mar 05, 2017, 1:55 AM UTC

jlgaddis wrote: post #18

anakron wrote: post #7

Relevant xkcd - https://xkcd.com/1806/ And don't forget the alt text!

Yeah, it's linked -- twice -- right there on the page.

Where's the karma in that?

Re: Two-finger scroll moves through time instead of space

#26

Post by deckar01 » Sun, Mar 05, 2017, 2:19 AM UTC

melloclello wrote: post #21

vmarsy wrote: post #4

Is that doing Ctrl+Z , Ctrl+Y in the background? Before opening the link I was thinking this was going to be a cool feature that lets you scroll through older revisions of a file in git. This, paired with a git blame GUI would be awesome. A minority report for git repos Sweet feature regardless :)

I once built a calculator app where you could two-finger swipe to undo/redo: https://appsto.re/nz/oxLx3.i Previous/future states simply appear adjacent to one another so you can scroll through them easily. I absolutely believe that version control history is something that needs to be treated as a dimension like any other

I once built a motion controlled drawing app that mapped rotating hands to scrubbing through the undo/redo stack.

https://youtu.be/DM1JtYyr88k

Skip to 0:18 to skip calibration.

It would be cool to make a calculator that recognized number gestures.

Re: Two-finger scroll moves through time instead of space

#27

Post by bobwaycott » Sun, Mar 05, 2017, 8:33 AM UTC

HammondSmoking wrote: post #5

vmarsy wrote: post #4

Is that doing Ctrl+Z , Ctrl+Y in the background? Before opening the link I was thinking this was going to be a cool feature that lets you scroll through older revisions of a file in git. This, paired with a git blame GUI would be awesome. A minority report for git repos Sweet feature regardless :)

You can easily do that using magit in emacs [1]. [1] https://magit.vc/manual/magit/Blaming.html

As a two-finger horizontal scroll?

Re: Two-finger scroll moves through time instead of space

#28

Post by rgrau » Sun, Mar 05, 2017, 8:37 AM UTC

amelius wrote: post #14

"Moving through time" seems to be actually a smart way to avoid branching in undo/redo histories.

That's how emacs does it by default. if you want the 'branching model', there's undo-tree-mode.

Re: Two-finger scroll moves through time instead of space

#29

Post by HammondSmoking » Sun, Mar 05, 2017, 8:38 AM UTC

bobwaycott wrote: post #27

HammondSmoking wrote: post #5

Earlier quoted context omitted.

You can easily do that using magit in emacs [1]. [1] https://magit.vc/manual/magit/Blaming.html

As a two-finger horizontal scroll?

The elisp functions to go back and forth in history are there, I'm sure it's just a matter of remapping them.

Re: Two-finger scroll moves through time instead of space

#30

Post by CMay » Sun, Mar 05, 2017, 8:56 AM UTC

Cyphase wrote: post #9

anakron wrote: post #7

Relevant xkcd - https://xkcd.com/1806/ And don't forget the alt text!

Inspiring* xkcd. :) I had a feeling someone was going to implement this when I saw xkcd yesterday.

Well, I know it has been done several times before, but it's not common.

A recent example is that some apps support this using the Surface Dial: https://youtu.be/8BJisE80wAc?t=116

Whether it's mapped to a two-finger slide, a scroll wheel, a dial, etc isn't the important part. The novel-feeling part is that as computers get faster and people improve at engineering performant software we can have the software provide results in realtime to analog inputs which makes people feel connected to the software in exciting ways.

A basic example would be a virtual DJ type app that lets you slide across an on-screen LP to scratch forward/backward. Obviously something more visually or conceptually impressive as seen in games which support time rewinding would be closer to the spirit of the post.

I would certainly like to encourage more developers to make use of scrolling/sliding input in unique ways.