如何重新创建特定的动画

Question

我正在尝试制作一个像seen here这样具有过渡效果的图像幻灯片。不幸的是，我只有这个gif，我无法找到实时网络示例。幻灯片显示应一次显示3个图像，然后滑动到下一个3，依此类推。我开始使用光滑的滑块为我做大部分的幻灯片工作（这不是一个要求）。但是我很难重新创建一个看起来像样本效果的过渡。我尝试在图像之间设置动画填充，但这会导致图像改变大小并导致图像偏离中心。在这种情况下使用box-sizing: border-box没有帮助。任何有关如何创建此转换的帮助将不胜感激。这是我的代码：

$(document).ready(function(){
  $('.slider').slick({
  		infinite: true,
  		arrows: true,
        slidesToShow: 3,
  		slidesToScroll: 3,
        speed: 500
  });
});

.wrapper{
  position: relative;
  box-sizing: border-box;
}
.slick-slide img{
  width:100%;
  box-sizing:border-box;
}
.slick-slide{
  padding: 0;
  box-sizing: border-box;
}
.slick-active{
  animation: slidetransition;
  animation-duration: 3s;
}
@keyframes slidetransition {
  0% {
    padding: 0px;
  }
  50% {
    padding: 0px 25px;
  }
  100% {
    padding:0;
  }
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.min.js"></script>

<div class="wrapper">
  <div class="slider">
    <div class="group1">
      <img src="http://placehold.it/350x150/292929/dd0909&text=Slide_1">
    </div>
    <div class="group1">
      <img src="http://placehold.it/350x150/292929/dd6809&text=Slide_2">
    </div>
    <div class="group1">
      <img src="http://placehold.it/350x150/292929/fdff3b&text=Slide_3">
    </div>
    <div class="group2">
      <img src="http://placehold.it/350x150/292929/3bff3b&text=Slide_4">
    </div>
    <div class="group2">
      <img src="http://placehold.it/350x150/292929/5d87ff&text=Slide_5">
    </div>
    <div class="group2">
      <img src="http://placehold.it/350x150/292929/ab8df8&text=Slide_6">
    </div>
  </div>
</div>

Answer 1

如果您可以将项目分组为3组，则此解决方案可以为您服务。

我设置不同的延迟来实现单独移动项目和再次分组的效果

var page = 1;

window.onload = function() {
  setInterval(changePage, 4000);
}

function changePage() {
  var previous = document.querySelector(".previous");
  if (previous) {
    previous.classList.remove("previous");
  }

  var active = document.querySelector(".active");
  active.classList.remove("active");
  active.classList.add("previous");

  page++;
  if (page > 3) {
    page = 1;
  }
  var id = "page" + page;
  var newActive = document.getElementById(id);
  newActive.classList.add("active");
}

.carousel {
  height: 150px;
  width: 500px;
  position: relative;
}

.page {
  width: 100%;
  height: 100%;
  display: flex;
  position: absolute;
  overflow: hidden;
}

.elem {
  height: 98%;
  width: 33%;
  font-size: 100px;
  border: solid 1px black;
  transition: transform 1s;
  transform: translateX(300%);
  opacity: 0;
}

.active .elem {
  transform: translateX(0%);
  opacity: 1;
}

.previous .elem {
  transform: translateX(-300%);
  opacity: 1;
}

.elem:nth-child(1) {
  background-color: tomato;
  transition-delay: 0s;
}

.elem:nth-child(2) {
  background-color: yellow;
  transition-delay: 0.1s;
}

.elem:nth-child(3) {
  background-color: lightblue;
  transition-delay: 0.2s;
}

.active .elem:nth-child(1) {
  transition-delay: 0.3s;
}

.active .elem:nth-child(2) {
  transition-delay: 0.4s;
}

.active .elem:nth-child(3) {
  transition-delay: 0.5s;
}

<div class="carousel">
  <div class="page active" id="page1">
    <div class="elem">1</div>
    <div class="elem">1</div>
    <div class="elem">1</div>
  </div>
  <div class="page" id="page2">
    <div class="elem">2</div>
    <div class="elem">2</div>
    <div class="elem">2</div>
  </div>
  <div class="page" id="page3">
    <div class="elem">3</div>
    <div class="elem">3</div>
    <div class="elem">3</div>
  </div>
</div>

这是另一个代码片段，使用nbuttons，并且响应迅速

var page = 1;
var numPages = 4;

function forward() {
    changePage(1);
}
function back() {
    changePage(-1);
}
function changePage (inc) {
    var ele = document.querySelector(".carousel");
    if (inc > 0) {
        ele.className = "carousel forward";
    } else {
        ele.className = "carousel back";
    }


    page += inc;
    if (page > numPages) {
        page = 1;
    }
    if (page < 1) {
        page = numPages;
    }
    var id = page - 3;
    if (id < 0) {
        id += numPages;
    }
    document.getElementById("page" + (id % numPages)).className = "page";
    id ++;
    document.getElementById("page" + (id % numPages)).className = "page left";
    id ++;
    document.getElementById("page" + id % numPages).className = "page active";
    id ++;
    document.getElementById("page" + id % numPages).className = "page right";
    id ++;
    document.getElementById("page" + id % numPages).className = "page";
}

.carousel {
  height: 200px;
  width: 98%;
  border: solid 3px black;
  position: relative;
  margin-left: 1%;
}

.page {
  eft: 300px;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: row;
  position: absolute;
  overflow: hidden;
}

.page:nth-child(2) {
  op: 100px;
}
.page:nth-child(3) {
  op: 200px;
}

.elem {
  height: 100%;
  width: 33.33%;
  font-size: 100px;
  transition: transform 1s;
  transform: translateX(300%);
  z-index: 1;
  opacity: 0;
}

.active .elem {
  transform: translateX(0%);
  z-index: 2;
  opacity: 1;
}

.left .elem {
  transform: translateX(-300%);
}

.forward .left .elem {
  z-index: 2;
  opacity: 1;
}

.right .elem {
  transform: translateX(300%);
}

.back .right .elem {
  z-index: 2;
  opacity: 1;
}

.elem:nth-child(1) {
  background-color: tomato;
}

.elem:nth-child(2) {
  background-color: yellow;
}

.elem:nth-child(3) {
  background-color: lightblue;;
}

.back .right .elem:nth-child(3) {
  transition-delay: 0s;
}
.back .right .elem:nth-child(2) {
  transition-delay: 0.1s;
}
.back .right .elem:nth-child(1) {
  transition-delay: 0.2s;
}
.back .active .elem:nth-child(3) {
  transition-delay: 0.3s;
}
.back .active .elem:nth-child(2) {
  transition-delay: 0.4s;
}
.back .active .elem:nth-child(1) {
  transition-delay: 0.5s;
}

.forward .left .elem:nth-child(1) {
  transition-delay: 0s;
}
.forward .left .elem:nth-child(2) {
  transition-delay: 0.1s;
}
.forward .left .elem:nth-child(3) {
  transition-delay: 0.2s;
}
.forward .active .elem:nth-child(1) {
  transition-delay: 0.3s;
}
.forward .active .elem:nth-child(2) {
  transition-delay: 0.4s;
}
.forward .active .elem:nth-child(3) {
  transition-delay: 0.5s;
}


button {
  font-size: 20px;
  margin: 20px;
}

<div class="carousel forward">
  <div class="page active" id="page0">
    <div class="elem">1</div>
    <div class="elem">1</div>
    <div class="elem">1</div>
  </div>
  <div class="page right" id="page1">
    <div class="elem">2</div>
    <div class="elem">2</div>
    <div class="elem">2</div>
  </div>
  <div class="page" id="page2">
    <div class="elem">3</div>
    <div class="elem">3</div>
    <div class="elem">3</div>
  </div>
  <div class="page left" id="page3">
    <div class="elem">4</div>
    <div class="elem">4</div>
    <div class="elem">4</div>
  </div>
</div>
<button onclick="back()">back</button>
<button onclick="forward()">forward</button>

Answer 2

对于性能，一个简单的转换：使用纯CSS转换要好得多。如果您只需要2组3张图像，则可以执行以下操作

/*just toggles the "toggle" class on the "slider" element 
/* when clicking the toggle button*/
document.getElementById("toggle").addEventListener("click", function(){
    document.getElementById("slider").classList.toggle("toggle");
});

.wrapper{
/*hides the 3 overflowing imgs, preventing scrollbars*/
  width:100%; overflow:hidden;
}

.slider{
/*classic inline-block whitespace hack*/
  font-size:0; 
/* so the 2 "groups" are side by side */
  width:200%;
/*sets the transition between groups with some delay*/
  transition: transform 1.2s;
}

.slider img{
/*sizes the imgs acording to the fixed quantity*/
  width:calc(100% / 6);
/*set the transition for the imgs separation*/
  transition: transform 1s;
/*sets the default value for transform*/
  transform:translateX(0);
}

/*when "toggle" is not active, last images move to the right*/
.slider img:nth-child(4){transform:translateX(40px);}
.slider img:nth-child(5){transform:translateX(80px);}
.slider img:nth-child(6){transform:translateX(120px);}

/*when active, the slide moves 50% left so the second group shows*/
.slider.toggle{transform:translateX(-50%)}
/*when active, first two images move displaces to the left*/
.slider.toggle img:nth-child(1){transform:translateX(-80px);}
.slider.toggle img:nth-child(2){transform:translateX(-40px);}
/*when active, last two images reset to regular position*/
.slider.toggle img:nth-child(4){transform:translateX(0);}
.slider.toggle img:nth-child(5){transform:translateX(0);}
.slider.toggle img:nth-child(6){transform:translateX(0);}

<div class="wrapper">
  <div class="slider" id="slider">
      <img src="http://placehold.it/350x150/292929/dd0909&text=Slide_1">
      <img src="http://placehold.it/350x150/292929/dd6809&text=Slide_2">
      <img src="http://placehold.it/350x150/292929/fdff3b&text=Slide_3">
      <img src="http://placehold.it/350x150/292929/3bff3b&text=Slide_4">
      <img src="http://placehold.it/350x150/292929/5d87ff&text=Slide_5">
      <img src="http://placehold.it/350x150/292929/ab8df8&text=Slide_6">
    </div>
</div>
<button id="toggle">toggle slides</button>

随意使用javascript自动切换组，这只是切换“切换”类列表的问题。我只是为了测试目的使用按钮切换。