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Different Speed for Reverse Animations #141

wondergiant opened this Issue · 2 comments

2 participants

wondergiant Jan Paepke

I was curious if anyone has found a way to change the speed of animations when scrolling up?

For Example:
I have a box that animates in for 4 seconds. On reverse I want it to animate out in 1 second.

What I have tried to far is:

  • Check which way we are scrolling, and change the 'duration' in the Tween (unsuccessful)
  • Check which way we are scrolling and change the 'timeScale' of the TimelineLite (unsuccessful)

Here is an oversimplified version of my timeline code:

var tl = new TimelineMax ({timeScale:10});
tl.append([ TweenMax.fromTo( $('#box'), .5, {left:0}, {left:400}) ])
controller.addTween('#box', tl, 0, 0 );

It almost feels like SuperScrollorama ignores any timeScale properties, and that once a TimelineLite has been added to the controller, it can't be updated.

Any ideas?


It never fails. As soon as you post for help you figure it out.

In my function that tests which direction you are scrolling, I was setting the timeScale property incorrectly. Here is a rough idea of how to change the timescale when scrolling up/down.

// Define the timeline
var tl = new TimelineMax ({timeScale:0});
tl.append([ TweenMax.fromTo( $('#box'), 4, {left:0}, {left:400}) ])

// Check which way you are scrolling
var lastScrollTop = 0;
       var st = $(window).scrollTop();
       if (st > lastScrollTop){
           // down code
       } else {
          // up code
       lastScrollTop = st;

// Add your timeline to the scrollorama controller
controller.addTween('#box', tl, 0, 0 ); // scroll duration, offset, reverse
Jan Paepke

Hi wondergiant,

thanks for sharing your solution! :)
I will keep this in mind when continuing work on ScrollMagic.

thanks & regards,

Jan Paepke janpaepke closed this
Jan Paepke janpaepke self-assigned this
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