Adding timeScale to timeline.reverse()

[beliy333 2 Likes (Newbie)]

Is it possible to add timeScale when playing a timeline with this method:?

timeline.reverse()

I'm running play timeline within a 'if scroll is this' loop and would like to reverse the timeline with faster speed on the 'else' statement like this:

if (scrollTop < 64) {
        timeline.play();
} 

else {
        timeline.reverse();
}

Thanks for your time.

Yan

See the Pen pgWZed?editors=001 by anon (@anon) on CodePen

[PointC 8,599 Likes (Superhero)]

Hi beliy333  ,

 

You can just do something like this:

      if (distance < 64) {
        timeline.play().timeScale(1);
      } else {
        timeline.reverse().timeScale(3);
      }

Obviously, you can enter any timeScale value you like. Hopefully this helps.

 

[beliy333 2 Likes (Newbie)]

Oh well that's just too simple!

 

Expanding on the question–do you see anything wrong with using either of those calls within my 'requestAnimationFrame' loop? I mean am I loading up the browser heavily by making it run those calls on repeat? Or is that a common practice when you're triggering events by scroll position and I shouldn't worry about it?

 

Thanks,

Yan

[PointC 8,599 Likes (Superhero)]

Personally, I use Scroll Magic for all my scroll triggered animations so I'm not sure about common or best practices.

 

I've only played with requestAnimationFrame, but never used it in the wild for a scroll triggered animation so I'll let someone a bit more experienced with it give you that part of the answer.

 

[OSUblake 9,990 Likes (Superhero)]

Check out this recent thread about scrolling.

http://greensock.com/forums/topic/13514-reaching-tweenmax-from-local-scope/?hl=scroll#entry56483

 

You're doing that for the most part using rAF, although you're still running logic on every tick (calculating the scroll distance). So here's your example using GSAP's ticker and a flag. The function only gets called if a scroll happened.

See the Pen bEojxr?editors=001 by osublake (@osublake) on CodePen