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Hi ! Hope you're all doing well, I have a question but not much time to provide a minimal demo, so let me explain my question easily : Let say I have a circle, and I want this circle, when an event fire, to change size, from 0px to 25px, or in reverse from 25px to 0, and when another event fire, from 25px to 100px, and also in reverse from 100px to 25px. I can just create for example two timelines, with a .fromTo(), pass my start and finish values, and use it with the play() and reverse() methods, which works well. But what if I want my circle to change from 25px to 100px ? My first idea was to control the progress(), just by tweening it from let's say : 0.25 to 1. But there is no such thing done smooth (the progress() methods is just a setter). How can I do it with elegance, without creating a third timeline ? Have a nice day ! Thanks !

I want to trigger an animation from a scrolltrigger in both directions, i.e it starts growing when the .intro class comes up into the viewport and then reverses when it scrolls back down again. I am hence looking to use Toggle Actions. I want the animation to continue unless the the class moves away. I can get it to work where its fully controlled by the scroll i.e. if the user stops scrolling, the animation stops, but I want the animation to complete or complete reverse once it has been triggered. In the code below, I've set it up with a separate scrolltrigger and tween, but you'll see commented out code where I tried to do it all in one. In the current version, it says "Cannot read properties of undefined (reading 'progress')" within drawStopSign, presumably because self.progress isn't defined. self.progress does work in the commented out consolidated version of scrolltrigger/ tween. Here is my code https://svelte.dev/repl/d09e192bca00453cae102eb91b4625c3?version=3.32.3

Hey Greensock Would be great to have the progress() function return 0-1 normalized with the selected easing. I just animated the rotation of car wheels, and needed that rotation to match the easing of the tween of the car's movement. Ended up using my own method, by fetching one of the tweened properties ( (current_value-start_value)/(end_value-start_value) ), but a generic progressWithEasing(), or another property to the progress() method, like 'normalize with easing' or something would be great... Cheers.

I've been struggling with the issue for 3 days, rewriting, refactoring code few times. Please help me if possible, guys. I use ReactJS and GSAP to create different computed animations ( overlays over a video ). What happens is that when I seek to specific percentage completed, for example 0.19 out of 49s timeline total length, it does seek to the first 1s part of the animation timeline cycle, and doesn't show the animation at the stage expected based on the progress percentage. I couldn't upload project to codesandbox as 1) it is nda signed and 2) it says that it has exceeded the 500-module items limit; I'm really sorry for that. Could someone please help me? I can share the source code or give access to my github repository. Thanks in advance everyone! import gsap from 'gsap'; import RightTitleStyles from '../../../../styles/right-title.module.css'; import React from 'react'; interface RightTitleProps { range: Object; name: string; currentTime: number; isPreview: boolean; type: 'smaller' | 'bigger'; isVisible: boolean; style: any; subtitle: string; title: string; } const RightTitle = React.memo( ({ videoRef, setStyle, range, name, currentTime, isPreview, type, isVisible, style, title, subtitle, }: RightTitleProps) => { const titleRef = React.useRef(); const { current: tl } = React.useRef(gsap.timeline({ paused: true })); const [ rangeIntervals, setRangeIntervals ] = React.useState< Array< number > >( range.timeIntervals ); const connectTitleRef = ( el : HTMLElement ) => { if (titleRef.current || !el || !videoRef || isPreview ) { if ( isPreview || !el || rangeIntervals === range.timeIntervals ) { return; } else { tl.killAll(); // just clearing out some tweens for repeated recreation } } tl.progress(1 - (range.timeIntervals[1] - currentTime) / (range.timeIntervals[1] - range.timeIntervals[0])); titleRef.current = el; console.log( titleRef.current.id, videoRef, ); console.log('configuring...'); tl.fromTo(videoRef, { width: '100%' }, { duration: 1, width: '63%' }).to(videoRef, { duration: range.timeIntervals[1] - range.timeIntervals[0] - 1 - 1, width: '63%' }).to(videoRef, { duration: 1, width: '100%' }); console.log( 'video configured', ); tl.fromTo( el, { x: name === 'Right Title' ? 150 : -150 }, { duration: 1, x: 0 }, ) .to(el, { x: 0, duration: range.timeIntervals[1] - range.timeIntervals[0] - 1 - 1, }) .to(`#${ el.id }`, { duration: 1, x: name === 'Right Title' ? 150 : -150, }); console.log(range.timeIntervals[1] - range.timeIntervals[0] - 1 - 1); }; // console.log( style, ); React.useEffect(() => { if (!titleRef.current || isPreview) return; console.log( 'styles applied to titleRef', titleRef.current._gsTransform ); console.log( 'these are tweens', tl.getChildren().map( child => child.vars.x || child.vars.width ) ); console.log( 'these are tweens', tl.getChildren().map( child => child.vars ) ); if (!(range.timeIntervals[0] <= currentTime && currentTime <= range.timeIntervals[1])) { console.log( 'current timing doesn`t fit the intervals' ); setStyle({}); tl.progress(0); return; } setStyle({ marginLeft: name === 'Left Title' ? 'auto' : 'unset', marginRight: name === 'Right Title' ? 'auto' : 'unset', }); tl.progress(1 - (range.timeIntervals[1] - currentTime) / (range.timeIntervals[1] - range.timeIntervals[0])); console.log(range.timeIntervals[1] - range.timeIntervals[0] - 1 - 1) console.log( currentTime, range.timeIntervals, 1 - (range.timeIntervals[1] - currentTime) / (range.timeIntervals[1] - range.timeIntervals[0]), ); }, [range.timeIntervals, currentTime]); const show = isVisible; if ( isPreview ) { return <div style={{ top: type === 'smaller' && 0, height: type === 'smaller' && '100%', ...style }} className={RightTitleStyles.aligningWrapper} > <div style={{ transform: isPreview && 'scale(0.55)' }}> <h1> {title} </h1> <p> {subtitle} </p>{' '} </div> </div> } return ( <div ref={ connectTitleRef } id={`${isPreview ? 'previewMode' : 'notPreviewMode'}3${range.color.slice(1)}`} style={{ visibility : !( currentTime + 1 >= range.timeIntervals[0] && currentTime - 1 <= range.timeIntervals[1] ) ? 'hidden' : 'visible', top: type === 'smaller' && 0, height: type === 'smaller' && '100%', ...style }} className={RightTitleStyles.aligningWrapper} > <div style={{ transform: isPreview && 'scale(0.55)' }}> <h1> {title} </h1> <p> {subtitle} </p>{' '} </div> </div> ); } ); export default RightTitle; Title.tsx animation.tsx

Thanks GS team for providing the Keeping ScrollTrigger same progress on resize codepen. How can I adapt this part of the code for multiple ScrollTriggers? ScrollTrigger.addEventListener("refreshInit", () => progress = ST.progress); ScrollTrigger.addEventListener("refresh", () => ST.scroll(progress * ScrollTrigger.maxScroll(window))); I have 12 ScrollTriggers set up, and they are all set up anonymously, like this: gsap.timeline({ scrollTrigger: {... How can I reference and update the progress for each one? I'm hesitant to rewrite them with separate, named timelines, because I noticed that when I crated the scrollTrigger separately for one of my animations using the create method: ScrollTrigger.create({... ...and passed in my timeline, the start/end triggers were in the wrong spot. (Even though it was written in DOM order, and ST.sort() was applied, the triggers were still appearing far too early). I'll also be using matchMedia. And, is there any advantage to using a function like: end: () => innerHeight * 4, instead of: end: innerHeight * 4, Many thanks!

Hi, do you have any tips how make a dragger/timeline or progress bar fulfill by itself as the mouse is being moved? Additionally, how to read its value in real time? I want to update mood.progress() value adequately. In short words - the goal is for pet's mood to get better as you move your mouse. Right now you can do it by dragging a dot on a slider. I'm using GSAP since yesterday. I've been fighting all day with it and cannot think of any proper solution. Thanks! [EDIT] Solved

Hey legends! Thanks for all the amazing work y'all do. Absolutely loving the GSAP journey. I have the following challenge: - I'm trying to create a form that always opens on page 1. - Once open, the user can then click back and forth between the pages - If they close the form from page 2 and then reopen, it opens on page 1 again. - The page section animation has a matchmedia associated with it as well (thanks to Blake!) I've got reduced test case, which almost works. I've built 2 timelines (1 to open the form and 1 to switch pages). The problem lies somewhere in my approach/logic. After closing the form from page 2 and reopening it, it successfully opens on page 1, because I’m using onComplete tl.seek(0).reverse(). HOWEVER, once reopened, the click event to swap pages does not work on the first click and requires the user to click "next" again to switch pages. My goal is to get it to swap pages on the first click. Hopefully that makes sense. Any help on how to approach/fix this would be greatly appreciated Much respect

So, in the Codepen we have a fairly simple animation. On click of the button, we animate the <header> and <nav> elements in, and click it again, we animate them out. It's a toggle button. However, on mobile, we don't want to run the animation but instead want things to appear instantly. We have achieved this using calls to progress(0) or progress(1), however, we've noticed that if you first toggle the animation on desktop, and then go to mobile, and toggle it again, that without the calls to tl.reversed(false) or tl.reversed(true), the animation still tries to animate and doesn't work correctly. Does anybody have any ideas why adding those lines would make it work as I would expect it? What am I missing? To reproduce: On desktop, or anything matching the media query in the Pen (1000px), click the 'Play animation' button, then click it again to hide the animation. Reduce your screen size down to trigger the mobile code, and again, toggle the 'Play animation' button. Note: the code in the Codepen works, you'll need to remove calls to tl.reversed() on lines 18 and 21 to see the issue. Any help would be much appreciated!

Hey yall, I'm new to greensock, and I love the library and this forum. This forum has especially been helpful as I practice and learn gsap technique. I have a new project that is supposed to animate a background SVG, and it has the following requirements: The background diagonals are supposed to slowly move downwards, kind of like a parallax effect. It's a big SVG with lines running across it When the user scrolls, it supposed to speed up the parallax progress a little bit with some easing, but continues to progress down the timeline When the user scrolls upwards, its supposed to reverse the tween timeline I've been able to achieve a few things, but the things i'm still having trouble with are Reversing the scroll direction with the scroll event is upwards. Also right now, I have the progress of the scroll animation tied to the height percent of the `window.innerHeight`. but after testing, i don't think this is a good idea. Because the window height percent is not compatible with the progress of the timeline. So i should find another way to progress the timeline.. but i'm not sure what. For reference I used this post to get started, which as been really helpful: If anyone has advice from doing something similar to this, please please let me know. My knowledge is not advanced enough to debug. Thank you Thank you!! PS please excuse the messy code, i'm just trying to get this thing working. Best, Gabriel

Checkout the codepen. If you use the buttons to set timeline progress(), you can go back and forth between 0 and 0.5 no problem, but as soon as you go to 1, you can't get back to 0. I've experimented with other values as well, and everything seems to work until you go to 1 for the first time. After that, when you try and return to 0 it reevaluates to 1. Does this look like a bug, or do I have my logic wrong? Thanks!

this is my first attempt using GSAP (it seemed to be the best animation library I could find). I'm trying to create a simple slot machine. Here is a codepen with the minimal amount of code. http://codepen.io/dax006/pen/LGoNrE It does 3 things. After creating a random symbol, it 1) creates a 'constantly spinning' tween and saves it 2) creates a 'slowing' tween and saves it 3) resets the progress of each tween/symbol to be 1/4th down the screen. Bug/problem #1 - Tweens are playing yet NOWHERE do I play() the tween. The tweens are PAUSED by default. Even if they are not paused, I IMMEDIATELY pause() them in resetslot(). Problem #2 - Progress() does not seem to be setting all symbols accurately (you can immediately see that the top symbol is askew) Problem #3 - Setting a tweens progress() to zero triggers its onComplete (watch the console) Problem #4 - Setting a tweens progress to 1 triggers its onComplete even though I have SuppressEvents:true (watch the console) I'm very frustrated with GSAP at the moment . Any help is appreciated -John Edit:problem 5 can't pause the codepen demo so can't read console

Greetings everyone! Thank you for taking the time to read my question. I am using TweenLite and TimelineLite to create an animation timeline that simulates a user navigating a set of "sections". When the user clicks a button, I create a tween that animates a percent value over the course of 0.3 seconds. On "update" of this tween, the "progress" of my timeline is set using TimelineLite.progress(x). My issue is that if one of the sections is tweened for another reason to a different position on screen, when the timeline is progressed, the section immediately snaps back to where the timeline wants it, based on the original creation. What I would like is that the position of the section would tween from it's new, updated position, to the endpoint defined in the timeline. Is this possible? Here is some pseudo-code that should help illustrate my question. var percentObj = { current: 0 }; var myTimeline = new TimelineLite(); // ---------- // Set starting positions myTimeline.add( TweenLite.set($('#section1'), { 'css': { 'y': 0 } }), TweenLite.set($('#section2'), { 'css': { 'y': 1000 } }), TweenLite.set($('#section3'), { 'css': { 'y': 1000 } }) ); // ---------- // Now that starting values are set, // pause the timeline myTimeline.pause(); // ---------- // Create future animations that // will be triggered by the user // Animate to section2 myTimeline.add( TweenLite.to($('#section2', 1, { 'css': { 'y': 0 }, 'ease': 'Power1.easeInOut' }) ); // Animate to section3 myTimeline.add( TweenLite.to($('#section3', 1, { 'css': { 'y': 0 }, 'ease': 'Power1.easeInOut' }) ); // ==================== function buttonClick() { TweenLite.to(percentObj, 0.3, { 'current': 0.5, 'onUpdate': updateProgress } } function updateProgress() { myTimeline.progress(percentObj.current); }