Creo que esto es lo que quieres: https://codepen.io/mukyuu/pen/GRgPYqG .
Casi cumplió con sus condiciones, excepto que no está usando Swiper 5 y snap.
- Está girando con la dirección del deslizamiento.
- Con un deslizamiento rápido, debe desplazar muchas diapositivas con impulso (como lo hace Swiper).
Luego, cuando la rueda deja de girar, se ajusta a un tobogán (como lo hace Swiper). - En
ontouchfunción hay una devolución de llamada.
HTML:
<div class="carousel" id="wrapper">
<figure>
<img src="https://source.unsplash.com/7mUXaBBrhoA/800x533" alt="">
<img src="https://source.unsplash.com/bjhrzvzZeq4/800x533" alt="">
<img src="https://source.unsplash.com/EbuaKnSm8Zw/800x533" alt="">
<img src="https://source.unsplash.com/kG38b7CFzTY/800x533" alt="">
<img src="https://source.unsplash.com/nvzvOPQW0gc/800x533" alt="">
<img src="https://source.unsplash.com/mCg0ZgD7BgU/800x533" alt="">
<img src="https://source.unsplash.com/1FWICvPQdkY/800x533" alt="">
<img src="https://source.unsplash.com/VkwRmha1_tI/800x533" alt="">
</figure>
</div>
S (CSS):
body {
margin: 0;
font-family: 'Roboto';
font-size: 16px;
display: flex;
flex-direction: column;
height: 100vh;
justify-content: center;
}
// Carousel configuration parameters
$n: 8;
$item-width: 400px;
$item-separation: 80px;
$viewer-distance: 500px;
// Derived variables
$theta: 2 * 3.141592653589793 / $n;
$apothem: 482.842712474619px;
.carousel {
padding: 20px;
perspective: $viewer-distance;
overflow: hidden;
display: flex;
flex-direction: column;
align-items: center;
> * {
flex: 0 0 auto;
}
figure {
cursor: grab;
margin: 0;
width: $item-width;
transform-style: preserve-3d;
transition: transform 0.5s;
transform-origin: 50% 50% (-$apothem);
img {
width: 100%;
box-sizing: border-box;
padding: 0 $item-separation / 2;
opacity: 0.9;
&:not(:first-of-type) {
position: absolute;
left: 0;
top: 0;
transform-origin: 50% 50% (-$apothem);
}
@for $i from 2 through $n {
&:nth-child(#{$i}) {
transform: rotateY(#{($i - 1) * $theta}rad);
}
}
}
}
nav {
display: flex;
justify-content: center;
margin: 20px 0 0;
button {
flex: 0 0 auto;
margin: 0 5px;
cursor: pointer;
color: #333;
background: none;
border: 1px solid;
letter-spacing: 1px;
padding: 5px 10px;
}
}
}
JS:
var
carousel = document.querySelector('.carousel'),
figure = carousel.querySelector('figure'),
nav = carousel.querySelector('nav'),
numImages = figure.childElementCount,
theta = 2 * Math.PI / numImages,
currImage = 0
;
// add touch detect:
function ontouch(el, callback){
// Modified from http://www.javascriptkit.com/javatutors/touchevents3.shtml
var touchsurface = el,
dir,
swipeType,
startX,
startY,
distX,
distY,
threshold = 150, //required min distance traveled to be considered swipe
restraint = 100, // maximum distance allowed at the same time in perpendicular direction
allowedTime = 500, // maximum time allowed to travel that distance
elapsedTime,
startTime,
handletouch = callback || function(evt, dir, phase, swipetype, distance){}
touchsurface.addEventListener('touchstart', function(e){
var touchobj = e.changedTouches[0]
dir = 'none'
swipeType = 'none'
dist = 0
startX = touchobj.pageX
startY = touchobj.pageY
startTime = new Date().getTime() // record time when finger first makes contact with surface
handletouch(e, 'none', 'start', swipeType, 0) // fire callback function with params dir="none", phase="start", swipetype="none" etc
e.preventDefault()
}, false)
touchsurface.addEventListener('touchmove', function(e){
var touchobj = e.changedTouches[0]
distX = touchobj.pageX - startX // get horizontal dist traveled by finger while in contact with surface
distY = touchobj.pageY - startY // get vertical dist traveled by finger while in contact with surface
if (Math.abs(distX) > Math.abs(distY)){ // if distance traveled horizontally is greater than vertically, consider this a horizontal movement
dir = (distX < 0)? 'left' : 'right'
handletouch(e, dir, 'move', swipeType, distX) // fire callback function with params dir="left|right", phase="move", swipetype="none" etc
}
else{ // else consider this a vertical movement
dir = (distY < 0)? 'up' : 'down'
handletouch(e, dir, 'move', swipeType, distY) // fire callback function with params dir="up|down", phase="move", swipetype="none" etc
}
e.preventDefault() // prevent scrolling when inside DIV
}, false)
touchsurface.addEventListener('touchend', function(e){
var touchobj = e.changedTouches[0]
elapsedTime = new Date().getTime() - startTime // get time elapsed
if (elapsedTime <= allowedTime){ // first condition for awipe met
if (Math.abs(distX) >= threshold && Math.abs(distY) <= restraint){ // 2nd condition for horizontal swipe met
swipeType = dir // set swipeType to either "left" or "right"
}
else if (Math.abs(distY) >= threshold && Math.abs(distX) <= restraint){ // 2nd condition for vertical swipe met
swipeType = dir // set swipeType to either "top" or "down"
}
}
// Fire callback function with params dir="left|right|up|down", phase="end", swipetype=dir etc:
handletouch(e, dir, 'end', swipeType, (dir =='left' || dir =='right')? distX : distY)
e.preventDefault()
}, false)
}
function DoSomething(dir, distance) {
//modifiy this function for wheel rotation (prev/next) images
var momentum = 100; // modify this value for how much momentum expected to switch to next/prev images
switch (dir){
case 'left':
case 'right':
currImage+= Math.round(distance/momentum);
break;
}
figure.style.transform = `rotateY(${currImage * -theta}rad)`;
}
document.getElementById('wrapper').ondragstart = function() { return false; }; // prevent image dragged on mouse drag
window.addEventListener('load', function() {
var dir, phase, el = document.getElementById('wrapper'),
position = {
X: 0,
Y: 0
};
el.onmousedown = function(down) {
position.X = down.clientX;
position.Y = down.clientY;
};
el.onmouseup = function(up) {
distX = up.clientX - position.X; // get horizontal dist traveled by finger while in contact with surface
distY = position.Y - up.clientY; // get vertical dist traveled by finger while in contact with surface
if (Math.abs(distX) > Math.abs(distY)) { // if distance traveled horizontally is greater than vertically, consider this a horizontal movement
dir = (distX < 0) ? 'left' : 'right';
distance = distX;
} else { // else consider this a vertical movement
dir = (distY < 0) ? 'down' : 'up';
distance = distY;
}
dir = (distance == 0) ? 'none' : dir;
DoSomething(dir, distance); // simulate touch from mouse control
};
ontouch(el, function(evt, dir, phase, swipetype, distance){
// evt: contains original Event object
// dir: contains "none", "left", "right", "top", or "down"
// phase: contains "start", "move", or "end"
// swipetype: contains "none", "left", "right", "top", or "down"
// distance: distance traveled either horizontally or vertically, depending on dir value
if ( phase == 'end' && (dir =='left' || dir == 'right') ) // on succesful swipe
DoSomething(dir, distance);
})
}, false)
Probado en los navegadores Android 9 y Windows 10.