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It appears as though the scrollerProxy is initiated multiple times after routing which causes the matrix 3d animation to jump from -232213 to 0 and back. I think this is because the nuxt instance is kept while routing between pages that also use the _.vue page template but I cant figure out how to force it to forget the past scrollerProxy 😢 Any advice as to how to initiate smoothscrolling in Nuxt? // _.vue template <template> <div> </div> </template> <script> import { gsap } from 'gsap' import { ScrollTrigger } from 'gsap/ScrollTrigger' gsap.registerPlugin(ScrollTrigger) export default { mounted() { this.smooth() this.$forceUpdate() }, destroyed() { // used to kill the ScrollTrigger instance for this component this.expand = false }, methods: { smooth() { if (process.client) { window.scrollTo(0,0) const locoScroll = new this.LocomotiveScroll({ el: document.querySelector('.smooth-scroll'), smooth: true }) // each time Locomotive Scroll updates, tell ScrollTrigger to update too (sync positioning) locoScroll.on('scroll', ScrollTrigger.update) ScrollTrigger.scrollerProxy('.smooth-scroll', { scrollTop(value) { return arguments.length ? locoScroll.scrollTo(value, 0, 0) : locoScroll.scroll.instance.scroll.y }, // we don't have to define a scrollLeft because we're only scrolling vertically. getBoundingClientRect() { return {top: 0, left: 0, width: window.innerWidth, height: window.innerHeight} }, // LocomotiveScroll handles things completely differently on mobile devices - it doesn't even transform the container at all! So to get the correct behavior and avoid jitters, we should pin things with position: fixed on mobile. We sense it by checking to see if there's a transform applied to the container (the LocomotiveScroll-controlled element). pinType: document.querySelector('.smooth-scroll').style.transform ? 'transform' : 'fixed' }) // each time the window updates, we should refresh ScrollTrigger and then update LocomotiveScroll. ScrollTrigger.addEventListener('refresh', () => locoScroll.update()) // after everything is set up, refresh() ScrollTrigger and update LocomotiveScroll because padding may have been added for pinning, etc. ScrollTrigger.refresh() const headerItems = ['.header__logo', '.nav', '.header__trigger'] if (!this.isTouchDevice()) { headerItems.forEach((item) => { gsap.to(item, { scrollTrigger: { trigger: '.header', scroller: '.smooth-scroll', scrub: true, pin: true, start: 'top', end: document.querySelector('body').offsetHeight, pinSpacing: false, }, y: document.querySelector('body').offsetHeight, transformOrigin: 'center top', ease: 'none' }) }) const largeMedia = document.querySelectorAll('.large-media.no-controls') if (largeMedia) { largeMedia.forEach((media) => { let mediaItem = media.querySelector('video') if (media.querySelector('img')) { mediaItem = media.querySelector('img') } gsap.to(mediaItem, { scrollTrigger: { trigger: media, scroller: '.smooth-scroll', scrub: true, start: 'top', end: 'bottom', }, y: '100%', transformOrigin: 'center top', ease: 'none' }) }) } const nextCase = document.querySelector('.next-case') if (nextCase) { gsap.to('.next-case .large-media', { scale: 1, opacity: 0, scrollTrigger: { trigger: nextCase, scroller: '.smooth-scroll', start: `top-=${window.innerHeight / 2}`, end: `bottom-=${window.innerHeight}`, scrub: 1, } }) gsap.to('.next-case__background', { opacity: 1, scrollTrigger: { trigger: nextCase, scroller: '.smooth-scroll', start: `top-=${window.innerHeight / 2}`, end: `bottom-=${window.innerHeight}`, scrub: 1, } }) gsap.to('.large-text-header', { opacity: 1, scrollTrigger: { trigger: nextCase, scroller: '.smooth-scroll', start: `top-=${window.innerHeight / 2}`, end: `bottom-=${window.innerHeight}`, scrub: 1, } }) const observerTrigger = document.querySelector('.next-case__observer-trigger') const onIntersection = (entries) => { for (const entry of entries) { if (entry.isIntersecting) { this.loaded = entry.intersectionRatio if (entry.intersectionRatio > 0.95) { this.background = true if (!this.expand) { // window.location.href = nextCase.querySelector('a').getAttribute('href') // goor, doch effectief this.$router.push(nextCase.querySelector('a').getAttribute('href')) this.expand = true } } } } } let threshold = [] // create array with numbers between 0 and 1 for (var i = 0; i <= 100; i++) { threshold.push(i / 100) } const observer = new IntersectionObserver(onIntersection, { threshold }) observer.observe(observerTrigger) } } } }, isTouchDevice() { try { document.createEvent('TouchEvent') return true } catch (e) { return false } } }, } </script> -
GSAP 3.4 has arrived with some significant improvements to ScrollTrigger like: Accommodating different setups for various screen sizes, like a mobile version and desktop version - ScrollTrigger.matchMedia() Batching and staggering elements that enter the viewport, similar to what's often done with IntersectionObserver - ScrollTrigger.batch() Integrating with smooth scrolling libraries - ScrollTrigger.scrollerProxy() ScrollTrigger.matchMedia() You can use standard media queries to seamlessly transition between different ScrollTriggers. It's surprisingly simple to set up and let ScrollTrigger automatically handle all of the creating, undoing, and destroying for you. Basic setup ScrollTrigger.matchMedia({ // desktop "(min-width: 800px)": function() { // setup animations and ScrollTriggers for screens 800px wide or greater (desktop) here... // These ScrollTriggers will be reverted/killed when the media query doesn't match anymore. }, // mobile "(max-width: 799px)": function() { // The ScrollTriggers created inside these functions are segregated and get // reverted/killed when the media query doesn't match anymore. }, // all "all": function() { // ScrollTriggers created here aren't associated with a particular media query, // so they persist. } }); See the Pen ScrollTrigger.matchMedia() Demo by GreenSock (@GreenSock) on CodePen. There's a new ScrollTrigger.saveStyles() method that can be useful with matchMedia(). It saves the current inline styles for any element(s) so that they're reverted properly if animations added other inline styles. It's explained in the video above. See the ScrollTrigger.matchMedia() docs for details. ScrollTrigger.batch() Normally, each ScrollTrigger fires its callbacks (onEnter, onLeave, etc.) immediately when they occur but what if you want to coordinate an animation (like with staggers) of ALL the elements that fired a similar callback around the same time? ScrollTrigger.batch() creates a coordinated group of ScrollTriggers (one for each target element) that batch their callbacks within a certain interval, delivering a neat Array so that you can easily do something like create a staggered animation of all the elements that enter the viewport around the same time. It's a great alternative to IntersectionObserver because it's more widely compatible and easier to work with. Plus you're not restricted to only entering or exiting the viewport - batch() can use ANY start and end values! Demo See the Pen ScrollTrigger.batch() Demo by GreenSock (@GreenSock) on CodePen. See the ScrollTrigger.batch() docs for details. ScrollTrigger.scrollerProxy() ScrollTrigger purposefully avoids "scrolljacking" (disabling the browser's native scrolling behavior in favor of a custom, non-standard scrolling solution). However, smooth scrolling was by far the most requested feature to pair with ScrollTrigger. There are plenty of smooth-scrolling libraries out there, so we created the .scrollerProxy() method to make it simple to integrate any of them with ScrollTrigger (or create your own effects). Here's a basic example using Locomotive Scroll but check out the .scrollerProxy() docs for examples with other libraries. See the Pen ScrollTrigger with LocomotiveScroll by GreenSock (@GreenSock) on CodePen. And more... GSAP 3.4 also delivers various bug fixes, so we'd highly recommend installing the latest version today. There are many ways to get GSAP - see the Installation page for all the options (download, NPM, zip, Github, etc.). Resources Full release notes on Github Full documentation Getting started with GSAP Learning resources Community forums ScrollTrigger Express video course from Snorkl.tv Happy tweening!
