Directional Marquee

console.clear();

gsap.registerPlugin(Observer);

const scrollingText = gsap.utils.toArray('.rail h4');

const tl = horizontalLoop(scrollingText, {
 repeat: -1,
 paddingRight: 30,
});

Observer.create({
 onChangeY(self) {
 let factor = 2.5;
 if (self.deltaY < 0) {
 factor *= -1;
 } 
 gsap.timeline({
 defaults: {
 ease: "none",
 }
 })
 .to(tl, { timeScale: factor * 2.5, duration: 0.2, overwrite: true, })
 .to(tl, { timeScale: factor / 2.5, duration: 1 }, "+=0.3");
 }
});

/*
This helper function makes a group of elements animate along the x-axis in a seamless, responsive loop.

Features:
 - Uses xPercent so that even if the widths change (like if the window gets resized), it should still work in most cases.
 - When each item animates to the left or right enough, it will loop back to the other side
 - Optionally pass in a config object with values like "speed" (default: 1, which travels at roughly 100 pixels per second), paused (boolean), repeat, reversed, and paddingRight.
 - The returned timeline will have the following methods added to it:
 - next() - animates to the next element using a timeline.tweenTo() which it returns. You can pass in a vars object to control duration, easing, etc.
 - previous() - animates to the previous element using a timeline.tweenTo() which it returns. You can pass in a vars object to control duration, easing, etc.
 - toIndex() - pass in a zero-based index value of the element that it should animate to, and optionally pass in a vars object to control duration, easing, etc. Always goes in the shortest direction
 - current() - returns the current index (if an animation is in-progress, it reflects the final index)
 - times - an Array of the times on the timeline where each element hits the "starting" spot. There's also a label added accordingly, so "label1" is when the 2nd element reaches the start.
 */
function horizontalLoop(items, config) {
	items = gsap.utils.toArray(items);
	config = config || {};
	let tl = gsap.timeline({repeat: config.repeat, paused: config.paused, defaults: {ease: "none"}, onReverseComplete: () => tl.totalTime(tl.rawTime() + tl.duration() * 100)}),
		length = items.length,
		startX = items[0].offsetLeft,
		times = [],
		widths = [],
		xPercents = [],
		curIndex = 0,
		pixelsPerSecond = (config.speed || 1) * 100,
		snap = config.snap === false ? v => v : gsap.utils.snap(config.snap || 1), // some browsers shift by a pixel to accommodate flex layouts, so for example if width is 20% the first element's width might be 242px, and the next 243px, alternating back and forth. So we snap to 5 percentage points to make things look more natural
		totalWidth, curX, distanceToStart, distanceToLoop, item, i;
	gsap.set(items, { // convert "x" to "xPercent" to make things responsive, and populate the widths/xPercents Arrays to make lookups faster.
		xPercent: (i, el) => {
			let w = widths[i] = parseFloat(gsap.getProperty(el, "width", "px"));
			xPercents[i] = snap(parseFloat(gsap.getProperty(el, "x", "px")) / w * 100 + gsap.getProperty(el, "xPercent"));
			return xPercents[i];
		}
	});
	gsap.set(items, {x: 0});
	totalWidth = items[length-1].offsetLeft + xPercents[length-1] / 100 * widths[length-1] - startX + items[length-1].offsetWidth * gsap.getProperty(items[length-1], "scaleX") + (parseFloat(config.paddingRight) || 0);
	for (i = 0; i < length; i++) {
		item = items[i];
		curX = xPercents[i] / 100 * widths[i];
		distanceToStart = item.offsetLeft + curX - startX;
		distanceToLoop = distanceToStart + widths[i] * gsap.getProperty(item, "scaleX");
		tl.to(item, {xPercent: snap((curX - distanceToLoop) / widths[i] * 100), duration: distanceToLoop / pixelsPerSecond}, 0)
		 .fromTo(item, {xPercent: snap((curX - distanceToLoop + totalWidth) / widths[i] * 100)}, {xPercent: xPercents[i], duration: (curX - distanceToLoop + totalWidth - curX) / pixelsPerSecond, immediateRender: false}, distanceToLoop / pixelsPerSecond)
		 .add("label" + i, distanceToStart / pixelsPerSecond);
		times[i] = distanceToStart / pixelsPerSecond;
	}
	function toIndex(index, vars) {
		vars = vars || {};
		(Math.abs(index - curIndex) > length / 2) && (index += index > curIndex ? -length : length); // always go in the shortest direction
		let newIndex = gsap.utils.wrap(0, length, index),
			time = times[newIndex];
		if (time > tl.time() !== index > curIndex) { // if we're wrapping the timeline's playhead, make the proper adjustments
			vars.modifiers = {time: gsap.utils.wrap(0, tl.duration())};
			time += tl.duration() * (index > curIndex ? 1 : -1);
		}
		curIndex = newIndex;
		vars.overwrite = true;
		return tl.tweenTo(time, vars);
	}
	tl.next = vars => toIndex(curIndex+1, vars);
	tl.previous = vars => toIndex(curIndex-1, vars);
	tl.current = () => curIndex;
	tl.toIndex = (index, vars) => toIndex(index, vars);
	tl.times = times;
	tl.progress(1, true).progress(0, true); // pre-render for performance
	if (config.reversed) {
	 tl.vars.onReverseComplete();
	 tl.reverse();
	}
	return tl;
}

/* StyleGallery host styles: independent replacement for unavailable shared Pen CSS. */
:root{--color-just-black:#111522;--color-surface-white:#f7f3ec;--color-surface75:#cfccc6;--color-surface50:#898e9f;--color-surface25:#414859;--color-shockingly-green:#95efd2;--color-lt-green:#b5f4da;--color-pink:#fbadce;--color-purple:#897dff;--color-lilac:#b5a1ff;--color-orangey:#ffd28c;--color-blue:#75d8ed;--color-ui-gradient:linear-gradient(135deg,#fbadce,#897dff);--color-ui-gradient-background:linear-gradient(135deg,#fbadce,#897dff);--color-text-gradient:linear-gradient(135deg,#fbadce,#897dff);--gradient-summer-fair:linear-gradient(135deg,#ffd28c,#fbadce);--gradient-lipstick:linear-gradient(135deg,#fbadce,#fc7f8e);--gradient-macha:linear-gradient(135deg,#b5f4da,#75d8ed);--color-grey:#898e9f;--color-grey-dark:#414859;--color-scroll-pink-lt:#fbadce;--color-text-purple:#b5a1ff;--surface50:#898e9f;--light:#f7f3ec;--dark:#111522;--mid:#898e9f}
*{box-sizing:border-box}body{background:#111522;color:#f7f3ec;font-family:system-ui,sans-serif;margin:0;min-height:100vh;width:100%}button,input{font:inherit}button,.button{background:#111522;border:1px solid #898e9f;border-radius:.55rem;color:#f7f3ec;cursor:pointer;padding:.65rem 1rem}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #95efd2;outline-offset:4px}h1,h2,h3,h4{line-height:1.15}h4{font-weight:500}code{font-family:ui-monospace,monospace}.heading-l{font-size:clamp(2rem,6vw,5rem)}.heading-text{font-size:clamp(1.5rem,4vw,3rem)}.box{background:#95efd2;border-radius:14px;height:clamp(38px,12vw,80px);width:clamp(38px,12vw,80px)}.green{background:#95efd2}.purple{background:#897dff}.orange{background:#ffd28c}.gradient-pink{background:linear-gradient(140deg,#fbadce,#fc7f8e)}.gradient-purple{background:linear-gradient(140deg,#b5a1ff,#537ff7)}.center{align-items:center;display:flex;justify-content:center}.text-center{text-align:center}.panel{min-height:100vh;width:100%}.flair:not(img){background-image:url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDgiIGhlaWdodD0iMjQ4IiB2aWV3Qm94PSIwIDAgMjQ4IDI0OCI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJnIiB4Mj0iMSIgeTI9IjEiPjxzdG9wIHN0b3AtY29sb3I9IiNiNWExZmYiLz48c3RvcCBvZmZzZXQ9IjEiIHN0b3AtY29sb3I9IiM3NWQ4ZWQiLz48L2xpbmVhckdyYWRpZW50PjwvZGVmcz48ZyBmaWxsPSJ1cmwoI2cpIj48cGF0aCBkPSJNODcgMjBoNzR2NjdoNjd2NzRoLTY3djY3SDg3di02N0gyMFY4N2g2N1oiLz48L2c+PC9zdmc+");background-position:center;background-repeat:no-repeat;background-size:contain;height:80px;width:80px}.flair--3:not(img){background-image:url("data:image/svg+xml;base64,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")}.braces{font-size:1rem}img{max-width:100%}
/* External font programs are omitted; preserve readable fallback typography. */
body,button,input,h1,h2,h3,h4,p,span,div{font-family:inherit}body{font-family:system-ui,sans-serif}code,pre{font-family:ui-monospace,monospace}

window.__STYLEGALLERY_ASSETS__={};
console.clear();
gsap.registerPlugin(Observer);
const scrollingText = gsap.utils.toArray(".rail h4");
const tl = horizontalLoop(scrollingText, {
  repeat: -1,
  paddingRight: 30
});
Observer.create({
  onChangeY(self) {
    let factor = 2.5;
    if (self.deltaY < 0) {
      factor *= -1;
    }
    gsap.timeline({
      defaults: {
        ease: "none"
      }
    }).to(tl, { timeScale: factor * 2.5, duration: 0.2, overwrite: true }).to(tl, { timeScale: factor / 2.5, duration: 1 }, "+=0.3");
  }
});
function horizontalLoop(items, config) {
  items = gsap.utils.toArray(items);
  config = config || {};
  let tl2 = gsap.timeline({ repeat: config.repeat, paused: config.paused, defaults: { ease: "none" }, onReverseComplete: () => tl2.totalTime(tl2.rawTime() + tl2.duration() * 100) }), length = items.length, startX = items[0].offsetLeft, times = [], widths = [], xPercents = [], curIndex = 0, pixelsPerSecond = (config.speed || 1) * 100, snap = config.snap === false ? (v) => v : gsap.utils.snap(config.snap || 1), totalWidth, curX, distanceToStart, distanceToLoop, item, i;
  gsap.set(items, {
    // convert "x" to "xPercent" to make things responsive, and populate the widths/xPercents Arrays to make lookups faster.
    xPercent: (i2, el) => {
      let w = widths[i2] = parseFloat(gsap.getProperty(el, "width", "px"));
      xPercents[i2] = snap(parseFloat(gsap.getProperty(el, "x", "px")) / w * 100 + gsap.getProperty(el, "xPercent"));
      return xPercents[i2];
    }
  });
  gsap.set(items, { x: 0 });
  totalWidth = items[length - 1].offsetLeft + xPercents[length - 1] / 100 * widths[length - 1] - startX + items[length - 1].offsetWidth * gsap.getProperty(items[length - 1], "scaleX") + (parseFloat(config.paddingRight) || 0);
  for (i = 0; i < length; i++) {
    item = items[i];
    curX = xPercents[i] / 100 * widths[i];
    distanceToStart = item.offsetLeft + curX - startX;
    distanceToLoop = distanceToStart + widths[i] * gsap.getProperty(item, "scaleX");
    tl2.to(item, { xPercent: snap((curX - distanceToLoop) / widths[i] * 100), duration: distanceToLoop / pixelsPerSecond }, 0).fromTo(item, { xPercent: snap((curX - distanceToLoop + totalWidth) / widths[i] * 100) }, { xPercent: xPercents[i], duration: (curX - distanceToLoop + totalWidth - curX) / pixelsPerSecond, immediateRender: false }, distanceToLoop / pixelsPerSecond).add("label" + i, distanceToStart / pixelsPerSecond);
    times[i] = distanceToStart / pixelsPerSecond;
  }
  function toIndex(index, vars) {
    vars = vars || {};
    Math.abs(index - curIndex) > length / 2 && (index += index > curIndex ? -length : length);
    let newIndex = gsap.utils.wrap(0, length, index), time = times[newIndex];
    if (time > tl2.time() !== index > curIndex) {
      vars.modifiers = { time: gsap.utils.wrap(0, tl2.duration()) };
      time += tl2.duration() * (index > curIndex ? 1 : -1);
    }
    curIndex = newIndex;
    vars.overwrite = true;
    return tl2.tweenTo(time, vars);
  }
  tl2.next = (vars) => toIndex(curIndex + 1, vars);
  tl2.previous = (vars) => toIndex(curIndex - 1, vars);
  tl2.current = () => curIndex;
  tl2.toIndex = (index, vars) => toIndex(index, vars);
  tl2.times = times;
  tl2.progress(1, true).progress(0, true);
  if (config.reversed) {
    tl2.vars.onReverseComplete();
    tl2.reverse();
  }
  return tl2;
}

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GSAP 3.15.0
Copyright 2026, GreenSock. All rights reserved.
Subject to the Standard No Charge License: https://gsap.com/standard-license.
The full notice in each original GSAP library file is preserved.


StyleGallery host adapter and replacement SVG subjects: locally authored.