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Walkway.js

351 points| connoratherton | 11 years ago |connoratherton.com | reply

50 comments

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[+] thedz|11 years ago|reply
Hey! Guy who did the Polygon PS4 and Xbox review SVG animations here.

This is really great stuff; has a super friendly API to boot.

FWIW, we also released a generalized library for some of the things we were doing WRT frame-based and duration-based animation:

https://github.com/voxmedia/metronome

(Reason being that for some animations, we wanted it to finish in a precise amount of time, but for others, maintaining frame rate was paramount, even if total elapsed time was longer)

[+] sergiosgc|11 years ago|reply
The current link does not work for me (Firefox 36.0a1 on Debian). The correct content seems to be here: http://connor-personal.herokuapp.com/walkway

Why doesn't it work? I imagine it's this funky DNS config:

  sergio@sergio-laptop:~ > dig www.connoratherton.com

  ;; QUESTION SECTION:
  ;www.connoratherton.com.		IN	A

  ;; ANSWER SECTION:
  www.connoratherton.com.	3529	IN	CNAME	http://connor-personal.herokuapp.com.
  http://connor-personal.herokuapp.com. 229 IN CNAME us-east-1-a.route.herokuapp.com.
  us-east-1-a.route.herokuapp.com. 55 IN	A	50.19.235.218
This is not valid CNAME content. Does this work on some browsers???
[+] connoratherton|11 years ago|reply
Switched to Google domains a few days ago, still configuring it properly. Thanks for letting me know about the link, looking into it.
[+] scott_karana|11 years ago|reply
Firefox 33.0.2 on OSX 10.9 here.

It renders well if the tab is in focus (fantastic work!) but there's a bug: if I open it in a tab in the background, and visit it later (after the animation would have completed?) I see only a nearly-blank page. Confused me for a bit, as I open mass-tabs here on HN...

[+] cturhan|11 years ago|reply
I guess OP doesn't use requestAnimationFrame, otherwise, it would wait for the tab being focused.

Edit: Checked the code. He uses requestAnimationFrame.

[+] experimental-|11 years ago|reply
In Linux, I get a varying, incomplete image with Firefox (33) and nothing with Chrome (38).
[+] popey456963|11 years ago|reply
I get the same problem, tried on both Chrome and Internet Explorer (Windows 7).
[+] maemre|11 years ago|reply
I got the same problem with Safari 8 on OS X 10.10
[+] connoratherton|11 years ago|reply
Sorry guys, I really didn't expect this much traffic. I still have to do some compatibility testing, I'm aiming to do it this weekend.
[+] JohnHaugeland|11 years ago|reply
Works well on Windows Phone 8.1.

I'm telling you because I'm pretty sure I'm the only Windows Phone user worldwide.

[+] jakelear|11 years ago|reply
Hey Connor, awesome work. You would have saved us a lot of work had you created this a year ago ;)
[+] thrush|11 years ago|reply
Really silly request, but could someone provide an implementation where I can just drop in an svg and it would have this effect? Please, and thank you.
[+] idid|11 years ago|reply
A bit of trouble on OS X Yosemite, running Chrome. if i open it an new tab, nothing happens. cmd + r and it works.
[+] liminal|11 years ago|reply
This seems like an awful lot of code for animating the path's strokeDashArray and strokeDashOffset attributes. Especially if you're already using another library with built in transitions, such as D3 or even jQuery.
[+] olso4052|11 years ago|reply
Very nice. It's funny, I keep clicking on these 'new JS library' links thinking, oh geez, not another one... but then I leave thinking, wow, that is very impressive and super useful.
[+] lnanek2|11 years ago|reply
make sure to leave and come back/hit refresh etc to try to get the animation to fire. looks cool, although there was nothing on the screen the first time i went to the tab on Chrome/MacOSX
[+] drunken_thor|11 years ago|reply
it seems that it doesnt run if I open this in a new tab and stay on the current page but if I reload the page it works (all done with chrome) Seems like a page focus event gone wrong
[+] coob|11 years ago|reply
Cool! We've been using a similar technique in our in-app sales page, also inspired by the Verge articles. I'll upload a video when I get a chance.
[+] jh47|11 years ago|reply
Works great for me on Safari 8 (Yosemite)!
[+] Mithaldu|11 years ago|reply
On my machine the animation never plays in Opera 12, and in Chrome and Firefox the black color is never applied.
[+] na85|11 years ago|reply
In Chrome on my machine, the black colour is not applied also.

Furthermore if I middleclick to open a new tab, the animation does not play.

[+] S4M|11 years ago|reply
"server not found".

I don't know if HN crashed the server or if there is some irony involved.

[+] erex78|11 years ago|reply
How would somebody do this w/ D3? Are there any similar bl.ocks that anybody knows about?
[+] RBerenguel|11 years ago|reply
Since you can write more or less, arbitrary "tween" functions in D3 (I learnt more than I wanted to about these when I wrote the dynamic "semaphore pie" we used here [1] ) it's relatively viable to do it for paths created from within D3. For paths already present and wanting to be selected... I guess it would work pretty much the same, since d3 selectors are more or less good to go with embedded SVGs, IIRC.

It's actually a very nice trick (and I love moving things around in graphs), and I'm intrigued by how I'd do it with D3. If I have any free time this weekend I'll look into it ;)

[1] VanillaSEO: http://vanillaseo.com/report/20141030fdec7fda61eafac3b8dca58...

Ninja edit (or almost): Here's the relevant part of d3 docs about tweens: https://github.com/mbostock/d3/wiki/Transitions