Develop Reference

How to rotate 4 children within a circle 90 degrees every 3 seconds using CSS custom properties and transform?

I'm trying to rotate 4 children (.feat) elements within a circle 90 degrees every 3 seconds using a CSS custom property called --angle, but it doesn't seem to work as expected:
function rotation() {
let inner = document.querySelector('[inn]');
let rota = inner.style.transform;
}
setInterval(rotation, 3000);
.feat-cont {
width: 60vmax;
height: 60vmax;
}
.feat-cont p {
display: inline-block;
}
.inner {
--angle: 0;
position: relative;
background-color: yellow;
transform: rotate(var(--angle) * 1deg);
width: 100%;
height: 100%;
border-radius: 50%;
}
.feat {
position: absolute;
}
.feat1 {
left: 25vmax;
}
.feat2 {
left: 50vmax;
top: 25vmax;
}
.feat3 {
left: 25vmax;
top: 50vmax;
}
.feat4 {
top: 25vmax;
}
<div class='feat-cont'>
<div class='inner' inn>
<div class='feat feat1' f1>
<img src="https://img.icons8.com/nolan/64/fast-forward.png"/>
<p>Fast Performance</p>
</div>
<div class='feat feat2' f2>
<img src="https://img.icons8.com/color/48/000000/memory-slot.png"/>
<p>64 GBs of memory</p>
</div>
<div class='feat feat3' f3>
<img src="https://img.icons8.com/nolan/64/camera.png"/>
<p>3K MP camera</p>
</div>
<div class='feat feat4' f4>
<img src="https://img.icons8.com/dusk/64/000000/branding.png"/>
<p>Trusted brand</p>
</div>
</div>
</div>

You can change the angle CSS custom property using CSSStyleDeclaration.setProperty():
circle.style.setProperty('--angle', `${ angle }deg`);
Also, note you use it as transform: rotate(var(--angle)), not as rotate(var(--angle) * 1deg), so the unit should already be included in the CSS property.
If you don't want to use CSS properties, you can change the style attribute directly:
circle.style.transform = `rotate(${ angle }deg)`;
However, I guess you need to rotate the circle in one direction while rotating all the children (.feat) in the opposite direction to keep them straight, so using CSS properties is probably more convenient, as otherwise, you would have to change the style attribute in all 4 children:
const circle = document.querySelector('.circle');
const prev = document.querySelector('.prev');
const next = document.querySelector('.next');
const step = 90;
let angle = 0;
let intervalID = null;
function updateRotation() {
circle.style.setProperty('--angle', `${ angle }deg`);
circle.style.setProperty('--angle-inverse', `${ -angle }deg`);
}
function autoRotate() {
intervalID = setInterval(() => {
angle += step;
updateRotation();
}, 3000);
}
prev.onclick = () => {
clearInterval(intervalID);
angle -= step;
updateRotation();
autoRotate();
};
next.onclick = () => {
clearInterval(intervalID);
angle += step;
updateRotation();
autoRotate();
};
autoRotate();
body {
font-family: monospace;
}
.container {
width: 60vmax;
height: 60vmax;
margin: 0 auto;
overflow: hidden;
}
.circle {
--angle: 0;
--angle-inverse: 0;
position: relative;
background-color: yellow;
width: 100%;
height: 100%;
border-radius: 50%;
transition: transform linear 1s;
transform: rotate(var(--angle));
}
.feat {
position: absolute;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
width: 20vmax;
height: 20vmax;
text-align: center;
transition: transform linear 1s;
}
.feat > img {
width: 10vmax;
height: 10vmax;
}
.feat > p {
margin: 8px 0 0;
}
.feat1 {
top: 0;
left: 50%;
transform: translate(-50%, 0) rotate(var(--angle-inverse));
}
.feat2 {
right: 0;
top: 50%;
transform: translate(0, -50%) rotate(var(--angle-inverse));
}
.feat3 {
bottom: 0;
left: 50%;
transform: translate(-50%, 0) rotate(var(--angle-inverse));
}
.feat4 {
left: 0;
top: 50%;
transform: translate(0, -50%) rotate(var(--angle-inverse));
}
.button {
position: fixed;
top: 0;
bottom: 0;
background: transparent;
border: 0;
padding: 32px;
outline: none;
font-family: monospace;
font-size: 32px;
}
.button:hover {
background: rgba(0, 0, 0, .0625);
}
.prev {
left: 0;
}
.next {
right: 0;
}
<div class="container">
<button class="button prev">‹</button>
<div class="circle">
<div class="feat feat1">
<img src="https://img.icons8.com/nolan/64/fast-forward.png"/>
<p>Fast Performance</p>
</div>
<div class="feat feat2">
<img src="https://img.icons8.com/color/48/000000/memory-slot.png"/>
<p>64 GBs of memory</p>
</div>
<div class="feat feat3">
<img src="https://img.icons8.com/nolan/64/camera.png"/>
<p>3K MP camera</p>
</div>
<div class="feat feat4">
<img src="https://img.icons8.com/dusk/64/000000/branding.png"/>
<p>Trusted brand</p>
</div>
</div>
<button class="button next">›</button>
</div>

I have added a pure CSS solution, You might not need javascript manipulations at all, it's lightweight too.
Just use CSS inbuilt Animation property.
.inner{animation: rotate 12s infinite;}
#keyframes rotate{
0%{transform: rotate(0deg);}
25%{transform: rotate(90deg);}
50%{transform: rotate(180deg);}
75%{transform: rotate(270deg);}
100%{transform: rotate(360deg);}
}
Find the codepen here
.feat-cont {
width: 60vmax;
height: 60vmax;
}
.feat-cont p {
display: inline-block;
}
.inner {
position: relative;
background-color: yellow;
width: 100%;
height: 100%;
border-radius: 50%;
}
.feat {
position: absolute;
}
.feat1 {
left: 25vmax;
}
.feat2 {
left: 50vmax;
top: 25vmax;
}
.feat3 {
left: 25vmax;
top: 50vmax;
}
.feat4 {
top: 25vmax;
}
.inner {
animation: rotate 12s infinite;
}
#keyframes rotate{
0%{transform: rotate(0deg);}
25%{transform: rotate(90deg);}
50%{transform: rotate(180deg);}
75%{transform: rotate(270deg);}
100%{transform: rotate(360deg);}
}
#keyframes r-rotate{
0%{transform: rotate(0deg);}
25%{transform: rotate(-90deg);}
50%{transform: rotate(-180deg);}
75%{transform: rotate(-270deg);}
100%{transform: rotate(-360deg);}
}
.feat {
animation: r-rotate 12s infinite;
}
<nav></nav>
<main>
<section>
<div class='feat-cont'>
<div class='inner' inn>
<div class='feat feat1' f1>
<img src="https://img.icons8.com/nolan/64/fast-forward.png"/><br><p>Fast Performance</p>
</div>
<div class='feat feat2' f2>
<img src="https://img.icons8.com/color/48/000000/memory-slot.png"/><br><p>64 GBs of memory</p>
</div>
<div class='feat feat3' f3>
<img src="https://img.icons8.com/nolan/64/camera.png"/><br><p>3K MP camera</p>
</div>
<div class='feat feat4' f4>
<img src="https://img.icons8.com/dusk/64/000000/branding.png"/><br><p>Trusted brand</p>
</div>
</div>
</div>
</section>
<section class='ndsection'>
</main>

Update Your javascript Code
setInterval(rotation, 3000);
var deg = 90;
let inner = document.querySelector('.inner');
function rotation() {
inner.style.transform='rotate('+deg+'deg)';
}

Uniform page load

I have two problems:
Animation issue(moving while scrolling):
My HTML:
<body>
<header class="stable">
<div id="object">
<img src="img/object.png">
</div>
</header>
</body>
My CSS:
#object{
position: absolute;
left: 0;
right: 0;
margin:auto;
bottom: 0%;
width: 45.9%;
height: auto;
animation: animation 1s ease-out;
z-index: 99;
}
#keyframes animation{
from{
left: -200%;
}
}
My JS:
var object = document.querySelector('#object');
window.addEventListener('scroll', function() {
var s = $(document).scrollTop();
var percent_from_top = s/this.innerHeight;
if(0 <= percent_from_top <= 1){
object.style.left = 150*(percent_from_top)+'%';
object.style.transition = "0.75s linear";
}
});
Problem with strip:
My HTML:
<section id="first_section">
<div class="strip"></div>
</section>
My CSS:
#first_section > .strip{
left: 0%;
right:0;
margin: auto;
margin-top:-30%;
width: 40%;
height: 130%;
transform: rotate(70deg);
background: rgba(0,0,0, 0.9);
}
It all works...
but it doesn't seem effective enough, because
it slows down, and
it partially appears
I tried to use clip-path for example, but it works the same way.
Is there a way to create a page more "evenly"?

Animating back and forth based on scroll position

I have created a small demo of two boxes animating in and out based on scroll position. But this isn't exactly what I want to achieve. What I want is for the boxes to animate based on scroll position not just transition in and out when a certain point is reached.
For example the scrolling should control the animation so if you scroll down the boxes will animate in, if you scroll up they will animate out. If you stop scrolling mid animation the animation will stop. If you reverse the scroll position the animation will reverse. So the animation only happens as you scroll.
I hope that is clear enough for you to understand. I will try provide a link to what I am trying to achieve. But for now here's my demo just using a transition to animate the boxes.
jQuery(document).ready(function($){
var scroll_pos = $(window).scrollTop();
var box = $('#container').offset().top - 200;
$(window).on('scroll', function(){
scroll_pos = $(window).scrollTop();
$('p').html(scroll_pos);
if(scroll_pos >= box){
$('#left').addClass('animate');
$('#right').addClass('animate');
}else{
$('#left').removeClass('animate');
$('#right').removeClass('animate');
}
});
});
#container{
width: 600px;
height: 300px;
margin: 1000px auto;
overflow: hidden;
font-size: 0;
}
#left{
width: 55%;
height: 300px;
background-color: blue;
display: inline-block;
transform: translateX(-100%);
transition: all 0.5s;
}
#right{
width: 45%;
height: 300px;
background-color: yellow;
display: inline-block;
transform: translateX(100%);
transition: all 0.5s;
}
#left.animate{
transform: translateX(0%);
}
#right.animate{
transform: translateX(0%);
}
p{
position: fixed;
top: 0;
left: 0;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<p></p>
<div id="container">
<div id="left"></div>
<div id="right"></div>
</div>
Here's an example of what I want to achieve. As you can see the scroll controls the animation of the fidget spinner https://ampbyexample.com/visual_effects/basics_of_scrollbound_effects/

Based on this answer you could do someting like:
/**
* inViewport jQuery plugin by Roko C.B.
* http://stackoverflow.com/a/26831113/383904
* Returns a callback function with an argument holding
* the current amount of px an element is visible in viewport
* (The min returned value is 0 (element outside of viewport)
*/
;(function($, win) {
$.fn.inViewport = function(cb) {
return this.each(function(i,el) {
function visPx(){
var elH = $(el).outerHeight(),
H = $(win).height(),
r = el.getBoundingClientRect(), t=r.top, b=r.bottom;
return cb.call(el, Math.max(0, t>0? Math.min(elH, H-t) : Math.min(b, H)));
}
visPx();
$(win).on("resize scroll", visPx);
});
};
}(jQuery, window));
// Now our stuff:
var $container = $("#container");
var $left = $("#left");
var $right = $("#right");
$container.inViewport(function( px ) {
var v = 1 - px / $container.height(); // Value from 1.0 to 0.0 and v.versa
$("p").text(v);
$left.css({transform: `translateX(${ -v * 100 }%)`});
$right.css({transform: `translateX(${ v * 100 }%)`});
});
body {
height: 500vh;
}
#container {
position: relative;
margin: 0 auto;
top: 200vh;
overflow: hidden;
width: 60vw;
height: 60vh;
}
#left,
#right {
width: 50%;
height: 100%;
float: left;
}
#left {
background-color: blue;
transform: translateX(-100%);
}
#right {
background-color: yellow;
transform: translateX(100%);
}
p {position: fixed; top:0; left: 0;}
<div id="container">
<div id="left"></div>
<div id="right"></div>
</div>
<p></p>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>

Keep parallax moving for one second on mouseout and stop smoothly

I would like to make a website with mouse parallax effect like in this page http://brightmedia.pl background mouse parallax is so smooth..
I have two questions:
When you mouseover on a container from, let's say, the top left corner, the image jumps. How can I make a smooth animation?
When you mouseout of a container, how can I make the image move a little bit and stop with a smooth animation?
What would code to solve these problems be?
Here is basic code:
$('.container').mousemove( function(e){
var xPos = e.pageX;
var yPos = e.pageY;
$('#par1').css({marginLeft: -xPos/20});
});
.container {
position: relative;
width: 100%;
height: 800px;
background: grey;
overflow: hidden;
margin: 0 auto;
}
.container img {
width: 110%;
height: 100vh;
position: absolute;
}
body{
height: 1000px;
}
h1{
font-size: 60px;
z-index: 10;
position: absolute;
left: 50%;
top: 30%;
transform: translate(-50%, -50%);
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<link rel="stylesheet" href="css.css">
</head>
<body>
<div class="container" id="container">
<img id="par1" src="https://www.gettyimages.ca/gi-resources/images/Homepage/Hero/UK/CMS_Creative_164657191_Kingfisher.jpg" alt="">
<h1>TEXT</h1>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script type="text/javascript" src="script.js"></script>
</body>
</html>

As I had solved the problem long time ago and I forgot about this post so I decided to update with the answer. Maybe it will be helpful for anyone else.
Problem solved by using GSAP. Below You can see the code that works exactly as I wanted
let wrap = document.getElementById('container');
let request = null;
let mouse = { x: 0, y: 0 };
let cx = window.innerWidth / 2;
let cy = window.innerHeight / 2;
document.querySelector('.container').addEventListener('mousemove', function(event) {
mouse.x = event.pageX;
mouse.y = event.pageY;
cancelAnimationFrame(request);
request = requestAnimationFrame(update);
});
function update() {
dx = mouse.x - cx;
dy = mouse.y - cy;
let tiltx = (dy / cy );
let tilty = - (dx / cx);
TweenMax.to("#container img", 1, {x:-tilty*20, y:-tiltx*20, rotation:0.01, ease:Power2.easeOut});
}
window.addEventListener('resize', function(event){
window.innerWidth / 2;
window.innerHeight / 2;
});
* {
margin:0;
padding:0;
box-sizing:border-box;
}
.container {
position: relative;
width: 100%;
height: 100vh;
overflow: hidden;
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
}
.container img {
width: 110%;
height: 120vh;
position: absolute;
}
h1 {
z-index:100;
font-size: 6rem;
z-index: 10;
color:#333;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/latest/TweenMax.min.js"></script>
<div class="container" id="container">
<img id="par1" src="https://www.gettyimages.ca/gi-resources/images/Homepage/Hero/UK/CMS_Creative_164657191_Kingfisher.jpg" alt="">
<h1>GSAP Mouse Parallax</h1>
</div>

You can rely one mouseenter / mouseleave to add animation:
$('.container').mousemove(function(e) {
var xPos = e.pageX;
var yPos = e.pageY;
$('#par1').css({
marginLeft: -xPos / 10
});
});
$('.container').mouseenter(function(e) {
var xPos = e.pageX;
var yPos = e.pageY;
$('#par1').animate({
"marginLeft": -xPos / 10
}, "slow");
});
$('.container').mouseleave(function(e) {
$('#par1').animate({
"marginLeft": "0"
}, "slow");
});
.container {
position: relative;
width: 100%;
height: 800px;
background: grey;
overflow: hidden;
margin: 0 auto;
}
.container img {
width: 110%;
height: 100vh;
position: absolute;
}
body {
height: 1000px;
}
h1 {
font-size: 60px;
z-index: 10;
position: absolute;
left: 50%;
top: 30%;
transform: translate(-50%, -50%);
}
<div class="container" id="container">
<img id="par1" src="https://www.gettyimages.ca/gi-resources/images/Homepage/Hero/UK/CMS_Creative_164657191_Kingfisher.jpg" alt="">
<h1>TEXT</h1>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>

As Temani said, playing with transition and eventually delay should do the job.
For 1st question: transition seems appropriate, associated with a mousein listener. Or even better, use the $(element).animate() function that allows to set the animation duration. That way, you don't set any value for transition duration.
For 2nd question: listener on mouseout > same process, but shorter animation (for the img shifting as well as the animation duration).
This should also give you some ideas:
https://codepen.io/Aldlevine/pen/Jowke
Based on Teemani below code example:
$('.container').mousemove(function(e) {
var xPos = e.pageX;
var yPos = e.pageY;
$('#par1').css("margin-left", -xPos / 10);
});
$('.container').mouseenter(function(e) {
var xPos = e.pageX;
var yPos = e.pageY;
$('#par1').css("margin-left", -xPos / 10);
});
$('.container').mouseleave(function(e) {
$('#par1').css({"transition": "margin-left 1s ease-in-out", "margin-left": "0"});
setTimeout( function() {
$('#par1').css("transition", "initial");
}, 500);
});
.container {
position: relative;
width: 100%;
height: 800px;
background: grey;
overflow: hidden;
margin: 0 auto;
}
.container img {
width: 110%;
height: 100vh;
position: absolute;
transition: margin-left 0.2s;
/* transition: margin-left 0.2s ease-in-out 0.2s;*/
}
body {
height: 1000px;
}
h1 {
font-size: 60px;
z-index: 10;
position: absolute;
left: 50%;
top: 30%;
transform: translate(-50%, -50%);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container" id="container">
<img id="par1" src="https://www.gettyimages.ca/gi-resources/images/Homepage/Hero/UK/CMS_Creative_164657191_Kingfisher.jpg" alt="">
<h1>TEXT</h1>
</div>

How to achieve smooth Hotspot Focus in panorama

Since Last 2 days I am trying to achieve smooth hotspot focus but i am not able to achieve it.
please click on below link and click on panorama icon,you will get an idea what i am saying.
http://ggnome.com/samples/pano2vr_5/tower/
PS: I have used http://threejs.org/examples/webgl_panorama_equirectangular.html panorama to achieve desired functionality.
Can anyone help me with this please...

You either have to create a 3d object in your scene and make it clickable or add a second threejs renderer, this time it will be a css3drenderer, basically it allows to have html elements in your threejs world. Place the camera in the middle of a cube made by html/css elements:
http://mrdoob.com/lab/javascript/threejs/css3d/
or go completely with css, something like:
$('body').on('click', function(e) {
console.log('clicked on .cube. New transform: ');
var newTransform = "translateZ(800px) rotateX("+Math.round(Math.random() * 360)+"deg) rotateY("+Math.round(Math.random() * 360)+"deg) rotateZ("+0+"deg)";
console.log(newTransform)
$('.cube').css({
"transform": newTransform,
"-webkit-transform": newTransform,
})
});
$('video').on('ended', function () {
console.log('ended')
this.load();
this.play();
});
var mousedown = true;
/*$(document).on('mousedown', function() {
mousedown = true;
})
$(document).on('mouseup', function() {
mousedown = false;
})*/
$(document).on('mousemove', function(e) {
if (mousedown) {
var posx = e.clientX;
var posy = e.clientY;
var startposx = 0;
var startposy = 0;
var newTransform = "translateZ(800px) rotateX("+ (startposx + posy * -1) +"deg) rotateY("+ (startposy + posx) +"deg) rotateZ("+0+"deg)";
$('.cube').css({
"transform": newTransform,
"-webkit-transform": newTransform,
})
/*
startposx = posx;
startposy = posy;
*/
}
})
/* scene wrapper */
.wrapper{
height: 300px;
margin-top:50px;
position:relative;
perspective: 800;
-webkit-perspective: 1600;
-moz-perspective: 800;
perspective-origin: 50% 1000px;
-webkit-perspective-origin: 50% 1000px;
-moz-perspective-origin: 50% 1000px;
}
/* cube wrapper */
.cube{
position: relative;
margin: 0 auto;
width: 2000px;
transform-style: preserve-3d;
transform: translateZ(1000px) rotateX(0deg) rotateY(10deg) rotateZ(0);
transform-origin: 1000px 1000px;
-webkit-transform-origin: 1000px 1000px;
-moz-transform-origin: 1000px 1000px;
/*transition: all 1000ms ease-in-out;*/
}
/* outer cube */
b{
position:absolute;
width:2000px;
height:2000px;
display:block;
background:rgba(255,255,255,0.1);
box-shadow:inset 0 0 30px rgba(0,0,0,0.2);
font-size:20px;
text-align:center;
line-height:2000px;
color:rgba(0,0,0,0.5);
font-family:sans-serif;
text-transform:uppercase;
/*transition: all 1s linear;*/
}
b video {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
width: 2000px;
height: 2000px;
background: black;
}
b img {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
width: 2000px;
height: 2000px;
}
b.back{
transform: translateZ(-1000px) rotateY(180deg);
}
b.right{
transform:rotateY(90deg) translateX(1000px);
transform-origin: top right;
}
b.left{
transform:rotateY(270deg) translateX(-1000px);
transform-origin: center left;
}
b.top{
transform:rotateX(90deg) translateY(-1000px);
transform-origin: top center;
}
b.bottom{
transform:rotateX(-90deg) translateY(1000px);
transform-origin: bottom center;
}
b.front{
transform: rotateX(0deg) translateZ(1000px);
}
b p {
position: absolute;
top: 50%;
left: 50%;
transform: translateX(-50%) translateY(-50%);
color: white;
z-index: 9;
font-size: 20px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
<div class="cube">
<b class="front">
<video id="sourcevid" autoplay loop controls>
<source src="video/BigBuckBunny_640x360.mp4" type="video/mp4">
<source src="video/BigBuckBunny_640x360.ogv" type="video/ogg">
</video>
<p class="face">FRONT</p>
</b>
<b class="back">
<img src="http://www.ilikewallpaper.net/ipad-air-wallpapers/download/4139/Bali-Sunset-ipad-4-wallpaper-ilikewallpaper_com_1024.jpg">
<p class="face">BACK</p>
</b>
<b class="top">
<img src="http://www.ilikewallpaper.net/ipad-air-wallpapers/download/4139/Bali-Sunset-ipad-4-wallpaper-ilikewallpaper_com_1024.jpg">
<p class="face">TOP</p>
</b>
<b class="bottom">
<img src="http://www.ilikewallpaper.net/ipad-air-wallpapers/download/4139/Bali-Sunset-ipad-4-wallpaper-ilikewallpaper_com_1024.jpg">
<p class="face">BOTTOM</p>
</b>
<b class="left">
<img src="http://www.ilikewallpaper.net/ipad-air-wallpapers/download/4139/Bali-Sunset-ipad-4-wallpaper-ilikewallpaper_com_1024.jpg">
<p class="face">LEFT</p>
</b>
<b class="right">
<img src="http://www.ilikewallpaper.net/ipad-air-wallpapers/download/4139/Bali-Sunset-ipad-4-wallpaper-ilikewallpaper_com_1024.jpg">
<p class="face">RIGHT</p>
</b>
</div>
</div>