Animating TweenMax slide on mouse scroll

Question

Basically following code based on ES6 and TweenMax , Its work fine, but I want to fix scroll event like when mouse scroll up slider animating (changed) from bottom to top and again mouse scroll down slider animating from top to bottom.

Also I want to changed slider on click based on right center navigation !

Thanks Advanced !

 class Slider { constructor() { this.bindAll(); this.el = document.querySelector(".js-slider"); this.inner = this.el.querySelector(".js-slider__inner"); this.slides = [...this.el.querySelectorAll(".js-slide")]; this.bullets = [...this.el.querySelectorAll(".js-slider-bullet")]; this.renderer = null; this.scene = null; this.clock = null; this.camera = null; this.images = [ "https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/bg1.jpg", "https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/bg2.jpg", "https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/bg3.jpg" ]; this.data = { current: 0, next: 1, total: this.images.length - 1, delta: 0 }; this.state = { animating: false, text: false, initial: true }; this.textures = null; this.init(); } bindAll() { ["render", "nextSlide"].forEach(fn => (this[fn] = this[fn].bind(this))); } setStyles() { this.slides.forEach((slide, index) => { if (index === 0) return; TweenMax.set(slide, { autoAlpha: 0 }); }); this.bullets.forEach((bullet, index) => { if (index === 0) return; const txt = bullet.querySelector(".js-slider-bullet__text"); const line = bullet.querySelector(".js-slider-bullet__line"); TweenMax.set(txt, { alpha: 0.25 }); TweenMax.set(line, { scaleX: 0, transformOrigin: "left" }); }); } cameraSetup() { this.camera = new THREE.OrthographicCamera( this.el.offsetWidth / -2, this.el.offsetWidth / 2, this.el.offsetHeight / 2, this.el.offsetHeight / -2, 1, 1000 ); this.camera.lookAt(this.scene.position); this.camera.position.z = 1; } setup() { this.scene = new THREE.Scene(); this.clock = new THREE.Clock(true); this.renderer = new THREE.WebGLRenderer({ alpha: true }); this.renderer.setPixelRatio(window.devicePixelRatio); this.renderer.setSize(this.el.offsetWidth, this.el.offsetHeight); this.inner.appendChild(this.renderer.domElement); } loadTextures() { const loader = new THREE.TextureLoader(); loader.crossOrigin = ""; this.textures = []; this.images.forEach(image => { const texture = loader.load(image + "?v=" + Date.now(), this.render); texture.minFilter = THREE.LinearFilter; this.textures.push(texture); }); this.disp = loader.load( "https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/rock-_disp.png", this.render ); this.disp.magFilter = this.disp.minFilter = THREE.LinearFilter; this.disp.wrapS = this.disp.wrapT = THREE.RepeatWrapping; } createMesh() { this.mat = new THREE.ShaderMaterial({ uniforms: { dispPower: { type: "f", value: 0.0 }, intensity: { type: "f", value: 0.5 }, texture1: { type: "t", value: this.textures[0] }, texture2: { type: "t", value: this.textures[1] }, disp: { type: "t", value: this.disp } }, transparent: true, vertexShader: document.querySelector("#vertexShader").textContent, fragmentShader: document.querySelector("#fragmentShader").textContent }); const geometry = new THREE.PlaneBufferGeometry( this.el.offsetWidth, this.el.offsetHeight, 1 ); const mesh = new THREE.Mesh(geometry, this.mat); this.scene.add(mesh); } transitionNext() { TweenMax.to(this.mat.uniforms.dispPower, 2.5, { value: 1, ease: Expo.easeInOut, onUpdate: this.render, onComplete: () => { this.mat.uniforms.dispPower.value = 0.0; this.changeTexture(); this.render.bind(this); this.state.animating = false; } }); const current = this.slides[this.data.current]; const next = this.slides[this.data.next]; const currentImages = current.querySelectorAll(".js-slide__img"); const nextImages = next.querySelectorAll(".js-slide__img"); const currentText = current.querySelectorAll(".js-slider__text-line div"); const nextText = next.querySelectorAll(".js-slider__text-line div"); const currentBullet = this.bullets[this.data.current]; const nextBullet = this.bullets[this.data.next]; const currentBulletTxt = currentBullet.querySelectorAll( ".js-slider-bullet__text" ); const nextBulletTxt = nextBullet.querySelectorAll( ".js-slider-bullet__text" ); const currentBulletLine = currentBullet.querySelectorAll( ".js-slider-bullet__line" ); const nextBulletLine = nextBullet.querySelectorAll( ".js-slider-bullet__line" ); const tl = new TimelineMax({ paused: true }); if (this.state.initial) { TweenMax.to(".js-scroll", 1.5, { yPercent: 100, alpha: 0, ease: Power4.easeInOut }); this.state.initial = false; } tl .staggerFromTo( currentImages, 1.5, { yPercent: 0, scale: 1 }, { yPercent: -185, scaleY: 1.5, ease: Expo.easeInOut }, 0.075 ) .to( currentBulletTxt, 1.5, { alpha: 0.25, ease: Linear.easeNone }, 0 ) .set( currentBulletLine, { transformOrigin: "right" }, 0 ) .to( currentBulletLine, 1.5, { scaleX: 0, ease: Expo.easeInOut }, 0 ); if (currentText) { tl.fromTo( currentText, 2, { yPercent: 0 }, { yPercent: -100, ease: Power4.easeInOut }, 0 ); } tl .set(current, { autoAlpha: 0 }) .set( next, { autoAlpha: 1 }, 1 ); if (nextText) { tl.fromTo( nextText, 2, { yPercent: 100 }, { yPercent: 0, ease: Power4.easeOut }, 1.5 ); } tl .staggerFromTo( nextImages, 1.5, { yPercent: 150, scaleY: 1.5 }, { yPercent: 0, scaleY: 1, ease: Expo.easeInOut }, 0.075, 1 ) .to( nextBulletTxt, 1.5, { alpha: 1, ease: Linear.easeNone }, 1 ) .set( nextBulletLine, { transformOrigin: "left" }, 1 ) .to( nextBulletLine, 1.5, { scaleX: 1, ease: Expo.easeInOut }, 1 ); tl.play(); } prevSlide() {} nextSlide() { if (this.state.animating) return; this.state.animating = true; this.transitionNext(); this.data.current = this.data.current === this.data.total ? 0 : this.data.current + 1; this.data.next = this.data.current === this.data.total ? 0 : this.data.current + 1; } changeTexture() { this.mat.uniforms.texture1.value = this.textures[this.data.current]; this.mat.uniforms.texture2.value = this.textures[this.data.next]; } listeners() { window.addEventListener("wheel", this.nextSlide, { passive: true }); } render() { this.renderer.render(this.scene, this.camera); } init() { this.setup(); this.cameraSetup(); this.loadTextures(); this.createMesh(); this.setStyles(); this.render(); this.listeners(); } } // Toggle active link const links = document.querySelectorAll(".js-nav a"); links.forEach(link => { link.addEventListener("click", e => { e.preventDefault(); links.forEach(other => other.classList.remove("is-active")); link.classList.add("is-active"); }); }); // Init classes const slider = new Slider(); 

 @font-face { font-family: 'font'; src: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/OakesGrotesk-Semi-Bold.woff2") format("woff2"); src: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/OakesGrotesk-Semi-Bold.woff") format("woff"); font-weight: 600; font-style: normal; } @font-face { font-family: 'font-2'; src: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/MaisonNeue-Book.woff2") format("woff2"); src: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/MaisonNeue-Book.woff") format("woff"); font-weight: normal; font-style: normal; } html { font-size: 16px; } html, body { height: 100%; } body { display: flex; align-items: center; justify-content: center; background-color: #111; font-family: 'font'; overflow: hidden; } a { color: #fff; text-decoration: none; } .scroll { position: absolute; bottom: 2rem; left: 50%; -webkit-transform: translateX(-50%); transform: translateX(-50%); color: rgba(255, 255, 255, 0.5); font-family: 'font-2'; font-size: calc(0.5rem + 0.35vw); z-index: 10; } .logo { position: absolute; top: 2rem; left: 50%; -webkit-transform: translateX(-50%); transform: translateX(-50%); padding: 0; margin: 0; z-index: 10; } .logo img { display: block; height: 1rem; width: auto; } ul, li { list-style: none; padding: 0; margin: 0; } .nav { position: absolute; top: 2rem; z-index: 10; } .nav--left { left: 1rem; } .nav--right { right: 1rem; } .nav ul { display: flex; align-items: center; height: 1rem; } .nav li { display: block; margin: 0 1rem; padding: 0; } .nav a { position: relative; display: flex; align-items: center; font-size: calc(0.5rem + 0.35vw); font-family: 'font-2'; } .nav a span { position: relative; } .nav a span:before { content: ''; position: absolute; left: 0; bottom: -0.35rem; width: 100%; height: 1px; background-color: rgba(255, 255, 255, 0.25); transition: -webkit-transform .75s ease; transition: transform .75s ease; transition: transform .75s ease, -webkit-transform .75s ease; -webkit-transform-origin: right; transform-origin: right; -webkit-transform: scaleX(0); transform: scaleX(0); } .nav a:hover span:before, .nav a.is-active span:before { -webkit-transform: scaleX(1); transform: scaleX(1); -webkit-transform-origin: left; transform-origin: left; } .vert-text { position: absolute; bottom: 2rem; right: 2rem; width: 15rem; display: flex; align-items: center; z-index: 10; } .vert-text span { display: block; color: #fff; text-transform: uppercase; line-height: 1.1; -webkit-transform: rotate(-90deg) translateY(15rem); transform: rotate(-90deg) translateY(15rem); -webkit-transform-origin: bottom left; transform-origin: bottom left; font-size: 1.35rem; } .cart-total { display: block; height: 2rem; width: 2rem; background-color: rgba(255, 255, 255, 0.25); border-radius: 50%; text-align: center; line-height: 2rem; margin-left: 1rem; } .slider { position: absolute; left: 0; top: 0; right: 0; bottom: 0; } .slider__text { position: absolute; bottom: calc(2rem + 3vw); left: calc(2rem + 3vw); z-index: 10; font-size: calc(1rem + 4vw); text-transform: uppercase; -webkit-transform-origin: top; transform-origin: top; line-height: 1.075; color: #fff; } .slider__text-line { overflow: hidden; } .slider__inner { position: absolute; left: 0; top: 0; right: 0; bottom: 0; } .slider__nav { position: absolute; top: 50%; right: 0; -webkit-transform: translateY(-50%); transform: translateY(-50%); z-index: 10; } .slider-bullet { display: flex; align-items: center; padding: 1rem 0; } .slider-bullet__text { color: #fff; font-size: 0.65rem; margin-right: 1rem; } .slider-bullet__line { background-color: #fff; height: 1px; width: 1rem; } .slider canvas { position: absolute; left: 0; top: 0; right: 0; bottom: 0; } .slide { position: absolute; left: 0; top: 0; right: 0; bottom: 0; overflow: hidden; } .slide__content { display: flex; align-items: center; justify-content: center; position: absolute; left: 0; top: 0; right: 0; bottom: 0; } .slide__img { position: relative; width: 25vw; height: 70vh; padding: 0; margin: 0; min-width: 12.5rem; -webkit-transform-origin: top; transform-origin: top; } .slide__img:first-child { top: -1.5rem; } .slide__img:last-child { bottom: -1.5rem; } .slide__img img { display: block; position: absolute; left: 0; top: 0; width: 100%; height: 100%; -o-object-fit: cover; object-fit: cover; } 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/2.0.2/TweenMax.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/97/three.min.js"></script> <nav class="nav nav--left js-nav"> <ul> <li> <a href="#"><span>Mens</span></a> </li> <li> <a href="#"><span>Womens</span></a> </li> <li> <a href="#" class="is-active"><span>Collections</span></a> </li> </ul> </nav> <figure class="logo"> <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/logo_copy_copy.svg"> </figure> <nav class="nav nav--right"> <ul> <li> <a href="https://twitter.com/Jesper_Landberg?lang=en" target="_blank"><span>Say hi</span></a> </li> <li> <a href="#"> <span>Cart</span> <div class="cart-total">0</div> </a> </li> </ul> </nav> <div class="slider js-slider"> <div class="slider__inner js-slider__inner"></div> <div class="slide js-slide"> <div class="slide__content"> <figure class="slide__img js-slide__img"> <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/photo1.jpg"> </figure> <figure class="slide__img js-slide__img"> <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/photo2.jpg"> </figure> </div> <div class="slider__text js-slider__text"> <div class="slider__text-line js-slider__text-line"> <div>Black is</div> </div> <div class="slider__text-line js-slider__text-line"> <div>timeless. Black is</div> </div> <div class="slider__text-line js-slider__text-line"> <div>the colour of</div> </div> <div class="slider__text-line js-slider__text-line"> <div>Eternity.</div> </div> </div> </div> <div class="slide js-slide"> <div class="slide__content"> <figure class="slide__img js-slide__img"> <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/photo3.jpg"> </figure> <figure class="slide__img js-slide__img"> <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/photo4.jpg"> </figure> </div> </div> <div class="slide js-slide"> <div class="slide__content"> <figure class="slide__img js-slide__img"> <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/photo5.jpg"> </figure> <figure class="slide__img js-slide__img"> <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/58281/photo6.jpg"> </figure> </div> </div> <nav class="slider__nav js-slider__nav"> <div class="slider-bullet js-slider-bullet"> <span class="slider-bullet__text js-slider-bullet__text">01</span> <span class="slider-bullet__line js-slider-bullet__line"></span> </div> <div class="slider-bullet js-slider-bullet"> <span class="slider-bullet__text js-slider-bullet__text">02</span> <span class="slider-bullet__line js-slider-bullet__line"></span> </div> <div class="slider-bullet js-slider-bullet"> <span class="slider-bullet__text js-slider-bullet__text">03</span> <span class="slider-bullet__line js-slider-bullet__line"></span> </div> </nav> <div class="scroll js-scroll">Scroll</div> </div> <div class="vert-text"> <span> Wings+Horns<br> X Kyoto Black </span> </div> <script id="vertexShader" type="x-shader/x-vertex"> varying vec2 vUv; void main() { vUv = uv; gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0); } </script> <script id="fragmentShader" type="x-shader/x-fragment"> varying vec2 vUv; uniform sampler2D texture1; uniform sampler2D texture2; uniform sampler2D disp; uniform float dispPower; uniform float intensity; void main() { vec2 uv = vUv; vec4 disp = texture2D(disp, uv); vec2 dispVec = vec2(disp.x, disp.y); vec2 distPos1 = uv + (dispVec * intensity * dispPower); vec2 distPos2 = uv + (dispVec * -(intensity * (1.0 - dispPower))); vec4 _texture1 = texture2D(texture1, distPos1); vec4 _texture2 = texture2D(texture2, distPos2); gl_FragColor = mix(_texture1, _texture2, dispPower); } </script> 

Answer 1

You're already capturing the wheel event in your nextSlide function. All you need to do now is read its event.deltaY value to determine whether the scroll was up or down. Here's some pseudocode:

var prevY = 0;
var newY = 0;

nextSlide(event) {
    newY = event.deltaY;

    if(newY > prevY){
        slideDown();
    }else if(newY < prevY) {
        slideUp();
    }

    // Store deltaY into prevY for comparison on next scroll
    prevY = event.deltaY;
}