Stagger effect not applying on grid

[nelsonsantos]

Hello everyone, I'm currently trying to  replicate the effect demonstrated in the uploaded GIF. While I've successfully implemented the easing effect, I'm encountering difficulties with the stagger effect. I've experimented with various approaches, with the latest attempt shown below. I can prepare a CodePen example if needed. Perhaps I'm overlooking something simple. Any guidance or suggestions would be greatly appreciated. Thank you!
 

useGSAP(() => {
    let proxy = { translate: 0 },
        translateSetter = gsap.quickSetter(".video-grid-content-container", "translateY", "px"),
        clamp = gsap.utils.clamp(-40, 40);

    ScrollTrigger.create({
        onUpdate: (self) => {
            let translate = clamp(self.getVelocity() / -100);
            if (Math.abs(translate) > Math.abs(proxy.translate)) {
                proxy.translate = translate;
                gsap.to(proxy, {
                    translate: 0,
                    duration: 0.4,
                    stagger: {
                        amount: 10,
                        from: "start"
                    },
                    overwrite: true,
                    onUpdate: () => translateSetter(proxy.translate)
                });
            }
        }
    });
});

[GSAP Helper]

Hi @nelsonsantos and welcome to the GSAP Forums!

 

Without a minimal demo, it's very difficult to troubleshoot; the issue could be caused by CSS, markup, a third party library, a 3rd party script, etc. Would you please provide a very simple CodePen or Stackblitz that illustrates the issue? 

 

Please don't include your whole project. Just some colored <div> elements and the GSAP code is best. See if you can recreate the issue with as few dependencies as possible. Start minimal and then incrementally add code bit by bit until it breaks. Usually people solve their own issues during this process! If not, at least we have a reduced test case which greatly increases your chances of getting a relevant answer.

 

See the Pen aYYOdN by GreenSock (@GreenSock) on CodePen

that loads all the plugins. Just click "fork" at the bottom right and make your minimal demo: 

 

Using a framework/library like React, Vue, Next, etc.? 

CodePen isn't always ideal for these tools, so here are some Stackblitz starter templates that you can fork and import the gsap-trial NPM package for using any of the bonus plugins: 

• React (please read this article!)
• Next
• Svelte
• Sveltekit
• Vue
• Nuxt

 

Please share the StackBlitz link directly to the file in question (where you've put the GSAP code) so we don't need to hunt through all the files. 

 

Once we see an isolated demo, we'll do our best to jump in and help with your GSAP-specific questions. ✅

[nelsonsantos]

Shure, give me some time!

[nelsonsantos]

https://stackblitz.com/edit/react-ncl7wh?file=src%2FApp.js

I prepared this sample snippet. The scroll effect is spot-on, so you can easily tell the difference between a gentle roll and a more intense one. I've also thrown in the stagger property, and it behaves just like it does on my own machine.

[Rodrigo]

Hi,

 

The first issue in your code is that you're using the quick setter on the parent element, that is the element that contains the grid, and not the grid elements so staggering will have no effect whatsoever.

 

Then I fail to see the point of a quick setter if you can achieve the same with just a GSAP Tween that gets overwritten if another is created. Something like this:

useGSAP(() => {
  let proxy = { translate: 0 },
      translateSetter = gsap.quickSetter('.video-container', 'y', 'px'),
      clamp = gsap.utils.clamp(-1000, 1000);

  ScrollTrigger.create({
    onUpdate: (self) => {
      translateSetter(clamp(self.getVelocity() / -100));
      gsap.to('.video-container', {
        y: 0,
        duration: 0.2,
        stagger: 0.05,
        overwrite: true,
      });
    },
  });
});

Here is a fork of your demo with that approach:
https://stackblitz.com/edit/react-hnfbhc?file=src%2FApp.js

 

Hopefully this helps.

Happy Tweening!

[nelsonsantos]

Hi @Rodrigo,
 

Thank you so much for your time and guidance. I'm relatively new to GSAP, and it turns out the solution was much simpler than I initially thought. I suppose I just need to dedicate more time to studying! The stagger effect is now working flawlessly. I only need to make a few adjustments, but overall, the effect is achieving exactly what I wanted.

Thanks again!!