使用变换时，停止移动内容

Question

我正在使用transform: rotate();来旋转＆amp;中的内容然而，在视野之外，每个文本主体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个按钮时，如果您查看边框，则内容位于不同的位置。

当点击下一个按钮时，滚轮旋转90度，所以我希望内容在每次旋转时处于相同的位置。有人可以解释/解决为什么不发生这种情况吗？

我为我的内容创建了一个轮子，我设计了轮子来隐藏目前看不到的选项;

// 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

这是我的目标。

• 我已将项目的变换原点设置为左上角（用于定位的相同点）

• 使用变换translateY和translateX，无论宽度和高度如何，每个项目都可以放在方向盘上

• 你不需要动画的jQuery。只需使用它来切换活动类。使用CSS3动画和“活动”类可以更顺利地实现相同的结果并且代码更少。

Codepen here

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

非常具有挑战性。问题是你的div的垂直居中组合有不同的高度，你的px绝对定位。然后变换旋转

我使用典型的top:50; transform:-50%垂直定心黑客出来了解决方案，适应不同的div旋转。

通过完全可预测和计算的值来处理垂直对齐。另一方面，水平对齐被证明是比较棘手的，也许我在这里遗漏了一些东西，但是我已经通过魔法数字为那些人提出了解决方案（尽管我是我不确定为什么）...无论如何，这里是片段

＆＃13;

＆＃13;

// 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);
});

＆＃13;

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;
  }
}

＆＃13;

<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>

＆＃13;

＆＃13;

＆＃13;

唯一的更改是在特定的项目定义中，因此如果您想检查笔以获得更好的可见性，那么这是您应该替换的部分：

.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);
}

希望有所帮助。如果无论如何有人感觉解释+ 修复那些神奇的数字，那就非常受欢迎了;）

Answer 3

这是我的试用:)我删除了unset a类并使用了css item-one two..选择器，并首先使用CSS使用nth-child准备初始滚轮布局到圆心，然后旋转车轮本身。返回到初始位置是棘手的，因为当从270deg旋转到0deg时，它反向动画反向。所以我添加了一个额外的类，以便在没有动画的情况下立即移动到初始位置。

transform-origin

$(".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;
        }

Answer 4

也许这不是一个正确的解决方案，但它可以正常工作。

我将.item的属性显示更改为flex。 并使用transform-origin和项目位置进行了一些操作

＆＃13;

＆＃13;

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;
  transform-origin: center;
}
.item{
	width: 250px;
    height: 100%;
    flex-direction: column;
    display: flex;
    justify-content: center;
    position: absolute;
    opacity: 0;
    border: 1px solid red;
    transform-origin: center;
}
.item-active{
  opacity: 1;
}
.item-one{
  right: 0;
}

.item-two{
  -webkit-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    transform: rotate(90deg);
    bottom: 250px;
    transform-origin: bottom left;
}

.item-three{
  left: 0px;
    -webkit-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
    transform: rotate(180deg);
}

.item-four{
      bottom: -250px;
    transform-origin: top left;
    -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;
}

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;
  }
}

＆＃13;

＆＃13;

＆＃13;