使用变换旋转时停止移动内容

Question

我正在使用transform: rotate();在视图中旋转内容，但是，每个文本正文在进入视图时都处于不同的位置。因此，当您单击我的演示中的下一步按钮时，如果您查看边框，内容位于不同的位置。

当单击下一个按钮时，滚轮将平均旋转 90 度，因此我希望内容在每次旋转时都处于相同的位置。有人可以解释/解决为什么这不会发生吗？

我为我的内容创建了一个滚轮，并设置了滚轮样式以隐藏当前不可见的选项;

// Page load transform start, setters
var degree = 0;
var itemStart = $('.wheel').find('.item-one').addClass('item-active');
var itemNext = $('.wheel').find('.item-four').addClass('item-prev');
// On click
$('.next').click(function() {
var wheel = $('.wheel');
// Increment rotation
degree += 90;
wheel.css({
WebkitTransform: 'rotate(' + degree + 'deg)'
});
// Update setter
itemStart = $('.wheel').find('.item-active');
itemNext = $('.wheel').find('.item-prev');
// Add Animation
$(itemStart).addClass('fadeOut');
$(itemNext).addClass('fadeIn');
//If were at the end
var getStartPrev = $(itemStart).prev();
var getNextPrev = $(itemNext).prev();
if (getStartPrev.length == 0) {
$(itemStart).removeClass('item-active');
$(itemNext).prev().addClass('item-prev');
$('.item-four').addClass('item-active').removeClass('item-prev');
} else {
$(itemStart).removeClass('item-active');
$(itemNext).removeClass('item-prev').addClass('item-active');
$(itemNext).prev().addClass('item-prev');
}
if (getNextPrev.length == 0) {
$('.item-four').addClass('item-prev');
}
// Remove Animation
setTimeout(function() {
$('.wheel').find('.item').removeClass('fadeIn fadeOut');
}, 400);
});

.wheel-wrp {
position: relative;
height: 700px;
width: 700px;
}
.wheel {
height: 700px;
width: 700px;
transition: 0.75s;
border-radius: 50%;
position: relative;
background: #fff;
left: -350px;
}
.item {
width: 250px;
position: absolute;
opacity: 0;
}
.item-active {
opacity: 1;
}
.item-one {
bottom: 300px;
left: 450px;
}
.item-two {
bottom: 20px;
left: 230px;
-webkit-transform: rotate(90deg);
-moz-transform: rotate(90deg);
transform: rotate(90deg);
}
.item-three {
bottom: 320px;
left: 0px;
-webkit-transform: rotate(180deg);
-moz-transform: rotate(180deg);
transform: rotate(180deg);
}
.item-four {
top: 20px;
left: 230px;
-webkit-transform: rotate(270deg);
-moz-transform: rotate(270deg);
transform: rotate(270deg);
}
.current-item {
bottom: 300px;
left: 450px;
}
.next-item {
top: 20px;
left: 230px;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
transform: rotate(-90deg);
opacity: 0;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="page">
<div class="wheel-wrp">
<div class="wheel">
<div class="item item-one">
<h4>Project 1 - beautifully crafted digital brand</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
<div class="item item-two">
<h4>Project 2 - redefining technological boundaries</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
<div class="item item-three">
<h4>Project 3 - Beauty in Design</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
<div class="item item-four">
<h4>Project 4 - simply stunning </h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
</div>
</div>
</div>
<div class="next">Next</div>

示例演示 - https://codepen.io/SamXronn/pen/opqWbq

Answer 1

这是我的尝试。

• 我已将项目的转换原点设置为左上角(用于定位的点相同)

• 使用变换translateY和translateX，每个项目都可以靠在轮子上放置，无论它们的宽度和高度如何

• 你不需要jQuery来制作动画。只需使用它来切换活动类。使用CSS3动画和"活动"类可以更流畅地实现相同的结果，并且使用更少的代码。

代码笔在这里

let currentItem = 0
const $wheel = $('.wheel'),
$items = $wheel.find(".item")
$('.next').click(() => rotate(1));
$('.prev').click(() => rotate(-1));
const rotate = direction => {
currentItem -= direction
$wheel.css("transform",`rotate(${-currentItem*90}deg)`)
$items.removeClass("active")
.eq(currentItem%$items.length)
.addClass("active")
}

body {
background-color: #2c3e50;
}
button {
background: #2980b9;
padding: 15px 35px;
color: #fff;
float: left;
position: relative;
z-index: 9999;
cursor: pointer;
}
.wheel {
height: 700px;
width: 700px;
transition: transform 0.75s;
border-radius: 50%;
position: relative;
background: #fff;
}
.item {
width: 250px;
position: absolute;
opacity: 0.2;
transition: opacity 0.75s;
border: 1px solid #f00;
transform-origin: top left;
}
.item:nth-child(1) {
top: 50%;
left: 100%;
transform: translateY(-50%) translateX(-100%);
}
.item:nth-child(2) {
top: 100%;
left: 50%;
transform: rotate(90deg) translateY(-50%) translateX(-100%);
}
.item:nth-child(3) {
left: 0;
top: 50%;
transform: rotate(180deg) translateY(-50%) translateX(-100%);
}
.item:nth-child(4) {
top: 0;
left: 50%;
transform: rotate(270deg) translateY(-50%) translateX(-100%);
}
.item.active {
opacity: 1;
}
h4 {
margin: 0px 0px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<div id="page">
<div class="wheel">
<div class="item active">
<h4>Project 1 - beautifully crafted digital brand</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
<div class="item">
<h4>Project 2 - redefining technological boundaries</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div> 
<div class="item">
<h4>Project 3 - Beauty in Design</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div> 
<div class="item">
<h4>Project 4 - simply stunning </h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
</div>
</div>
<button class="prev">Prev</button>
<button class="next">Next</button>

Answer 2

相当具有挑战性。问题是垂直居中的组合，因为您的div 具有不同的高度，以及您的绝对定位与 px 的组合。当然，变换会旋转

我提出了一个解决方案，使用典型的top:50; transform:-50%垂直居中技巧，适应不同的div旋转。

这通过完全可预测和计算的值来处理垂直对齐。另一方面，水平对齐被证明更棘手，也许我在这里错过了一些东西，但我通过神奇的数字为那些想出了一个解决方案(% 有效，虽然我不确定为什么)......无论如何，这是片段

// Page load transform start, setters
var degree = 0;
var itemStart = $('.wheel').find('.item-one').addClass('item-active');
var itemNext = $('.wheel').find('.item-four').addClass('item-prev');
// On click
$('.next').click( function() {
var wheel = $('.wheel');

// Increment rotation
degree += 90;
wheel.css({ WebkitTransform: 'rotate(' + degree + 'deg)'});

// Update setter
itemStart = $('.wheel').find('.item-active');
itemNext = $('.wheel').find('.item-prev');
// Add Animation
$(itemStart).addClass('fadeOut');
$(itemNext).addClass('fadeIn');

//If were at the end
var getStartPrev = $(itemStart).prev();
var getNextPrev = $(itemNext).prev();

if( getStartPrev.length == 0 ) {
$(itemStart).removeClass('item-active');
$(itemNext).prev().addClass('item-prev');
$('.item-four').addClass('item-active').removeClass('item-prev');
} else {
$(itemStart).removeClass('item-active');
$(itemNext).removeClass('item-prev').addClass('item-active');
$(itemNext).prev().addClass('item-prev');   
}

if( getNextPrev.length == 0 ) {
$('.item-four').addClass('item-prev');
}

// Remove Animation
setTimeout(function(){ 
$('.wheel').find('.item').removeClass('fadeIn fadeOut');
}, 400);
});

body{
background-color:  #2c3e50; 
}
.next{
background: #2980b9;
padding: 15px 35px;
color: #fff;
float: left;
position: relative;
z-index: 9999;
cursor: pointer;
}
.wheel-wrp{
position: relative;
height: 700px;
width: 700px;
}
.wheel{
height: 700px;
width: 700px;
transition: 0.75s;
border-radius: 50%;
position: relative;
background: #fff;
left: -350px;
}
.item{
width: 250px;
position: absolute;
opacity: 0;
border: 1px solid red;
}
.item-active{
opacity: 1;
}
.item-one {
top: 50%;
transform: translateY(-50%);
left: 75%;
}
.item-two {
right: 50%;
top: 83%;
transform: translateX(50%) rotate(90deg);
}
.item-three {
top: 50%;
right: 75%;
transform: rotate(180deg) translateY(50%);
}
.item-four {
left: 50%;
bottom: 84%;
transform: translateX(-50%) rotate(270deg);
}
.current-item{
bottom: 300px;
left: 450px;
}
.next-item{
top: 20px;
left: 230px;
-webkit-transform:rotate(0deg);
-moz-transform:rotate(0deg);
transform:rotate(-90deg);
opacity: 0;
}
h4{
margin:0px 0px;
}
.fadeOut{
animation: menuFadeOut 350ms;
webkit-animation-fill-mode: forwards;
animation-fill-mode: forwards;  
}
.fadeIn{
animation: menuFadeIn 1500ms;
webkit-animation-fill-mode: forwards;
animation-fill-mode: forwards;
}
@keyframes menuFadeOut {
0% {
opacity: 1;
}
100% {
opacity: 0;
}
}
@keyframes menuFadeIn {
0% {
opacity: 0;
} 
100% {
opacity: 1;
}
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<div id="page">
<div class="wheel-wrp">
<div class="wheel">
<div class="item item-one">
<h4>Project 1 - beautifully crafted digital brand</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
<div class="item item-two">
<h4>Project 2 - redefining technological boundaries</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div> 
<div class="item item-three">
<h4>Project 3 - Beauty in Design</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div> 
<div class="item item-four">
<h4>Project 4 - simply stunning </h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..</p>
</div>
</div>
</div>
</div>
<div class="next">Next</div>

唯一的更改是在特定项目定义中，因此，如果要检查笔以获得更好的可见性，则应替换以下部分：

.item-one {
top: 50%;
transform: translateY(-50%);
left: 75%;
}
.item-two {
right: 50%;
top: 83%;
transform: translateX(50%) rotate(90deg);
}
.item-three {
top: 50%;
right: 75%;
transform: rotate(180deg) translateY(50%);
}
.item-four {
left: 50%;
bottom: 84%;
transform: translateX(-50%) rotate(270deg);
}

希望有帮助。如果有人想解释+修复这些神奇的数字，那将非常受欢迎;)

Answer 3

这是我的试用:)我删除了item-one two..类并使用 cssnth-child选择器，并首先使用 CSS 准备初始轮布局，使用transform-origin到圆心，然后旋转轮子本身。返回到初始位置很棘手，因为当从 270 度旋转到 0 度时，它会动画 şn 反转方向。因此，我添加了一个额外的类，可以立即移动到初始位置而无需动画。

$(".next").on("click", function () {
var wheel = $(".wheel");
if (wheel.hasClass("rotate-1")) {
wheel.removeClass("rotate-1").addClass("rotate-2");
}
else if (wheel.hasClass("rotate-2")) {
wheel.removeClass("rotate-2").addClass("rotate-3");
}
else if (wheel.hasClass("rotate-3")) {
wheel.removeClass("rotate-3").addClass("rotate-4");
}
else if (wheel.hasClass("rotate-4")) {
wheel.removeClass("rotate-4").addClass("rotate-5").delay(1000).queue(function (next) {
$(this).addClass("rotate-1");
$(this).removeClass("rotate-5");
next();
});
}
});

.wheel {
border-radius: 50%;
background: rebeccapurple;
width: 700px;
height: 700px;
display: flex;
align-items: center;
justify-content: center;
position: relative;
transition: all 1s ease;
margin-left : -350px;
}
.item {
background:transparent;
color: white;
width: 250px;
margin-right: 10px;
margin-left: calc(50% - 135px);
position: absolute;
transform-origin: calc(-50% + 35px) 50%;
transition: all 1s ease;
}
.wheel.rotate-1 {
transform: rotateZ(0deg);
transition: all 0s ease;
}
.wheel.rotate-2 {
transform: rotateZ(90deg);
}
.wheel.rotate-3 {
transform: rotateZ(180deg);
}
.wheel.rotate-4 {
transform: rotateZ(270deg);
}
.wheel.rotate-5 {
transform: rotateZ(360deg);
}
.item:nth-child(1) {
transform: rotateZ(0deg);
}
.item:nth-child(2) {
transform: rotateZ(-90deg);
}
.item:nth-child(3) {
transform: rotateZ(-180deg);
}
.item:nth-child(4) {
transform: rotateZ(-270deg);
}
.wheel.rotate-1 .item {
opacity: 0;
}
.wheel.rotate-1 .item:nth-child(1) {
opacity: 1;
}
.wheel.rotate-2 .item {
opacity: 0;
}
.wheel.rotate-2 .item:nth-child(2) {
opacity: 1;
}
.wheel.rotate-3 .item {
opacity: 0;
}
.wheel.rotate-3 .item:nth-child(3) {
opacity: 1;
}
.wheel.rotate-4 .item {
opacity: 0;
}
.wheel.rotate-4 .item:nth-child(4) {
opacity: 1;
}
.wheel.rotate-5 .item {
opacity: 0;
}
.wheel.rotate-5 .item:nth-child(1) {
opacity: 1;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="page">
<div class="wheel-wrp">
<div class="wheel rotate-1">
<div class="item">
<h4>Project 1 - beautifully crafted digital brand</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
laborum..
</p>
</div>
<div class="item">
<h4>Project 2 - redefining technological boundaries</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
laborum..
</p>
</div>
<div class="item">
<h4>Project 3 - Beauty in Design</h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
laborum..
</p>
</div>
<div class="item">
<h4>Project 4 - simply stunning </h4>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
laborum..
</p>
</div>
</div>
</div>
</div>
<div class="next">Next</div>