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Scrolltrigger can't refresh the start value of an element inside a pinned parent

Soufiane LASRI test
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Go to solution Solved by Cassie,

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Hi GSAP team,

First of all, thanks again for your work,

I'm trying to achieve a specific effect for a project
I have sections which look like tiles. When we scroll, the next tile is pinned under the current one and then scrolls naturally with the page once the "tile" is fully shown.

Like if you have a deck of cards in your hand and you remove them one by one by pushing them to the top.

 

But inside one tile, I have another Scrolltrigger (the black container in the Codepen) and its start value is calculated "well" but as the tile is pinned for one moment, the start value becomes wrong and I would like to recalculate it but it looks like Scrolltrigger cannot do that

 

Do you have an idea of how I can manage this use case?

 

I did a Codepen to show my issue, the markers are supposed to stick to the top and the bottom of the black box

 

Bonus question: I don't understand why the last ".content" background is cut?

 

Cheers 🫰

See the Pen VwBVLpv?editors=0110 by SoufianeLasri (@SoufianeLasri) on CodePen

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Hiya!

 

Could you explain what you're trying to achieve with the position sticky element?

This bit of code isn't doing anything at all. It's just adding some markers, but there's no animation or pinning at all associated with it.

ScrollTrigger.create({
  trigger: ".article",
  start: "top top",
  end: "bottom bottom",
  markers: true,
  refreshPriority: 20
});

 

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Hey @cassie

 

For my project I need this Scrolltrigger to do some animations and stuffs, but in my Codepen example I simplified the code so it just adds markers

I need the markers to be placed at the top and the bottom of the black container.

Right now they're floating in the page but not following the black container, because the black container stops scrolling for a moment when its parent get pinned, so the calculation of the top and the bottom are "wrong"

 

I hope this is more clear

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  • Solution

Gotcha!

 

Thanks for that. You're after pinnedContainer
 

pinnedContainer Element | String - If your ScrollTrigger's trigger/endTrigger element is INSIDE an element that gets pinned by another ScrollTrigger (pretty uncommon), that would cause the start/end positions to be thrown off by however long that pin lasts, so you can set the pinnedContainer to that parent/container element to have ScrollTrigger calculate those offsets accordingly. Again, this is very rarely needed. Important: nested pinning is not supported, so this feature is only for non-pinning ScrollTriggers (added in 3.7.0)

 

You have a strange 200px gap at the bottom because of your start values which were adding a 200px offset. Here you go, like this?

See the Pen LYBXQbw?editors=1010 by GreenSock (@GreenSock) on CodePen

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