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js实现旋转木马效果

2019-11-19 17:07:08
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效果图:

代码如下:

<html class=" js csstransforms3d" lang="zh"><head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">  <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>CSS3 3D transforms-旋转木马</title> <link rel="stylesheet" type="text/css" href="http://www.htmleaf.com/pins/1412/201502062108/css/style.css" rel="external nofollow" > <style media="screen">   .container {    width: 210px;    height: 140px;    position: relative;    margin: 50px auto 40px;    border: 1px solid #CCC;    -webkit-perspective: 1100px;     -moz-perspective: 1100px;      -o-perspective: 1100px;        perspective: 1100px;   }   #carousel {    width: 100%;    height: 100%;    position: absolute;    -webkit-transform-style: preserve-3d;     -moz-transform-style: preserve-3d;      -o-transform-style: preserve-3d;        transform-style: preserve-3d;   }   .ready #carousel {    -webkit-transition: -webkit-transform 1s;     -moz-transition: -moz-transform 1s;      -o-transition: -o-transform 1s;        transition: transform 1s;   }   #carousel.panels-backface-invisible figure {    -webkit-backface-visibility: hidden;     -moz-backface-visibility: hidden;      -o-backface-visibility: hidden;        backface-visibility: hidden;   }   #carousel figure {    display: block;    position: absolute;    width: 186px;    height: 116px;    left: 10px;    top: 10px;    border: 2px solid black;    line-height: 116px;    font-size: 80px;    font-weight: bold;    color: white;    text-align: center;   }   .ready #carousel figure {    -webkit-transition: opacity 1s, -webkit-transform 1s;     -moz-transition: opacity 1s, -moz-transform 1s;      -o-transition: opacity 1s, -o-transform 1s;        transition: opacity 1s, transform 1s;   } #options{  margin-top: 200px;  width: 100%;  text-align: center; } #options button{padding: 0.5em 1.5em;border: 2px solid #6699cc;background: #fff;}  </style> <!--[if IE]> <script src="http://libs.useso.com/js/html5shiv/3.7/html5shiv.min.js"></script> <![endif]--></head> <section class="container">   <div id="carousel" style="transform: translateZ(-286px) rotateY(0deg);">    <figure style="opacity: 1; background-color: rgba(255, 0, 0, 0.8); transform: rotateY(0deg) translateZ(286px);">1</figure>    <figure style="opacity: 1; background-color: rgba(255, 170, 0, 0.8); transform: rotateY(40deg) translateZ(286px);">2</figure>    <figure style="opacity: 1; background-color: rgba(169, 255, 0, 0.8); transform: rotateY(80deg) translateZ(286px);">3</figure>    <figure style="opacity: 1; background-color: rgba(0, 255, 0, 0.8); transform: rotateY(120deg) translateZ(286px);">4</figure>    <figure style="opacity: 1; background-color: rgba(0, 255, 169, 0.8); transform: rotateY(160deg) translateZ(286px);">5</figure>    <figure style="opacity: 1; background-color: rgba(0, 169, 255, 0.8); transform: rotateY(200deg) translateZ(286px);">6</figure>    <figure style="opacity: 1; background-color: rgba(0, 0, 255, 0.8); transform: rotateY(240deg) translateZ(286px);">7</figure>    <figure style="opacity: 1; background-color: rgba(170, 0, 255, 0.8); transform: rotateY(280deg) translateZ(286px);">8</figure>    <figure style="opacity: 1; background-color: rgba(255, 0, 169, 0.8); transform: rotateY(320deg) translateZ(286px);">9</figure>    <figure style="opacity: 0; transform: none;">10</figure>    <figure style="opacity: 0; transform: none;">11</figure>    <figure style="opacity: 0; transform: none;">12</figure>    <figure style="opacity: 0; transform: none;">13</figure>    <figure style="opacity: 0; transform: none;">14</figure>    <figure style="opacity: 0; transform: none;">15</figure>    <figure style="opacity: 0; transform: none;">16</figure>    <figure style="opacity: 0; transform: none;">17</figure>    <figure style="opacity: 0; transform: none;">18</figure>    <figure style="opacity: 0; transform: none;">19</figure>    <figure style="opacity: 0; transform: none;">20</figure>   </div>  </section>  <section id="options">   <p>    <label for="panel-count">个数</label>    <input id="panel-count" value="9" min="3" max="20" type="range">   <span class=" range-display"></span></p>   <p id="navigation">    <button id="previous" data-increment="-1">上一页</button>    <button id="next" data-increment="1">下一页</button>   </p>   <p>    <button id="toggle-axis">横竖切换</button>   </p>   <p>    <button id="toggle-backface-visibility">背面可见切换</button>   </p>  </section> </div> <script src="http://www.htmleaf.com/pins/1412/201502062108/js/utils.js"></script> <script>  var transformProp = Modernizr.prefixed('transform');  function Carousel3D ( el ) {   this.element = el;   this.rotation = 0;   this.panelCount = 0;   this.totalPanelCount = this.element.children.length;   this.theta = 0;   this.isHorizontal = true;  }  Carousel3D.prototype.modify = function() {   var panel, angle, i;   this.panelSize = this.element[ this.isHorizontal ? 'offsetWidth' : 'offsetHeight' ];   this.rotateFn = this.isHorizontal ? 'rotateY' : 'rotateX';   this.theta = 360 / this.panelCount;   // do some trig to figure out how big the carousel   // is in 3D space   this.radius = Math.round( ( this.panelSize / 2) / Math.tan( Math.PI / this.panelCount ) );   for ( i = 0; i < this.panelCount; i++ ) {    panel = this.element.children[i];    angle = this.theta * i;    panel.style.opacity = 1;    panel.style.backgroundColor = 'hsla(' + angle + ', 100%, 50%, 0.8)';    // rotate panel, then push it out in 3D space    panel.style[ transformProp ] = this.rotateFn + '(' + angle + 'deg) translateZ(' + this.radius + 'px)';   }   // hide other panels   for ( ; i < this.totalPanelCount; i++ ) {    panel = this.element.children[i];    panel.style.opacity = 0;    panel.style[ transformProp ] = 'none';   }   // adjust rotation so panels are always flat   this.rotation = Math.round( this.rotation / this.theta ) * this.theta;   this.transform();  };  Carousel3D.prototype.transform = function() {   // push the carousel back in 3D space,   // and rotate it   this.element.style[ transformProp ] = 'translateZ(-' + this.radius + 'px) ' + this.rotateFn + '(' + this.rotation + 'deg)';  };  var init = function() {   var carousel = new Carousel3D( document.getElementById('carousel') ),     panelCountInput = document.getElementById('panel-count'),     axisButton = document.getElementById('toggle-axis'),     navButtons = document.querySelectorAll('#navigation button'),     onNavButtonClick = function( event ){      var increment = parseInt( event.target.getAttribute('data-increment') );      carousel.rotation += carousel.theta * increment * -1;      carousel.transform();     };   // populate on startup   carousel.panelCount = parseInt( panelCountInput.value, 10);   carousel.modify();   axisButton.addEventListener( 'click', function(){    carousel.isHorizontal = !carousel.isHorizontal;    carousel.modify();   }, false);   panelCountInput.addEventListener( 'change', function( event ) {    carousel.panelCount = event.target.value;    carousel.modify();   }, false);   for (var i=0; i < 2; i++) {    navButtons[i].addEventListener( 'click', onNavButtonClick, false);   }   document.getElementById('toggle-backface-visibility').addEventListener( 'click', function(){    carousel.element.toggleClassName('panels-backface-invisible');   }, false);   setTimeout( function(){    document.body.addClassName('ready');   }, 0);  };  window.addEventListener( 'DOMContentLoaded', init, false); </script> <p id="disclaimer">对不起,你的浏览器不支持CSS 3D transforms。</p></body></html>

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