圈加载动画

时间：2015-07-06 13:36:17

标签： html css css3 svg css-shapes

我试图创建Apple的OS X圈加载动画。

enter image description here

到目前为止我尝试过：

＆＃13;
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.animation-wrapper {
  width: 200px;
  height: 200px;
  border: 1px solid black;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
  filter: brightness(0.8);
  -webkit-filter: brightness(0.8);
}
.pie-piece1 {
  position: absolute;
  width: 50%;
  height: 50%;
  bottom: 0;
  left: 0;
  background: linear-gradient(to right, rgba(255, 0, 0, 1) 0%, rgba(255, 255, 0, 1) 100%);
}
.pie-piece2 {
  position: absolute;
  width: 50%;
  height: 50%;
  bottom: 0;
  right: 0;
  background: linear-gradient(to right, rgba(255, 255, 0, 1) 0%, rgba(0, 255, 0, 1) 100%);
}
.pie-piece3 {
  position: absolute;
  width: 50%;
  height: 50%;
  top: 0;
  left: 0;
  background: linear-gradient(to right, rgba(255, 0, 0, 1) 0%, rgba(255, 0, 255, 1) 100%);
}
.pie-piece4 {
  position: absolute;
  width: 50%;
  height: 50%;
  top: 0;
  right: 0;
  background: linear-gradient(to right, rgba(255, 0, 255, 1) 0%, rgba(0, 0, 255, 1) 100%);
}
.rotating-spinners {
  position: absolute;
}
.spike {
  fill: rgba(22, 22, 22, 0.5);
}
＆＃13; 
<figure class="animation-wrapper">
  <div class="pie-piece1"></div>
  <div class="pie-piece2"></div>
  <div class="pie-piece3"></div>
  <div class="pie-piece4"></div>
  <svg class="rotating-spinners" width="100%" height="100%" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <defs>
      <path id="spin-part" class="spike" d="M 65,-40 C 65,-40 80,20 50,50 60,40 50,-40 50,-40Z" />
    </defs>
    <use x="0" y="0" xlink:href="#spin-part" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(60, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(120, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(180, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(240, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(300, 50, 50)" />
  </svg>
</figure>
＆＃13;
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线性渐变似乎没有正确对齐，因为我无法找到一种方法使渐变向两个方向移动。

有没有办法只使用CSS或SVG创建它而不像我一样混合它们？

或者我可以使用其他解决方案，如画布或某种形象魔法吗？

5 个答案:

答案 0 :(得分：72)

这是我的SVG版本。背景色轮并不完美，但我认为我相当接近。

<svg width="135" height="135" viewBox="0 0 200 200">
    <defs>
        <filter id="blur" color-interpolation-filters="linear">
            <feGaussianBlur in="SourceGraphic" stdDeviation="11"/>
        </filter>
        <mask id="mask">
            <circle cx="0" cy="0" r="90" fill="white"/>
        </mask>
        <linearGradient id="gloss" x2="0" y2="0.4">
            <stop offset="0" stop-color="white" stop-opacity="0.5"/>
            <stop offset="1" stop-color="white" stop-opacity="0"/>
        </linearGradient>
    </defs>

    <g transform="translate(100,100)" mask="url(#mask)">
        <g filter="url(#blur)">
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#c44"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#c09" transform="rotate(30)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#c0c" transform="rotate(60)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#90c" transform="rotate(90)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#44c" transform="rotate(120)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#09c" transform="rotate(150)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#0cc" transform="rotate(180)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#0c9" transform="rotate(210)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#4c4" transform="rotate(240)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#9c0" transform="rotate(270)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#cc0" transform="rotate(300)"/>
            <polygon points="0,0, -100,-26.8, -100,26.8" fill="#c90" transform="rotate(330)"/>
        </g>
        <g transform="scale(0.9,0.9)">
            <path d="M0,0C5,-61,-32,-86,-95,-90L-100,-46C-65,-53,-24,-35,0,0Z" fill="black" fill-opacity="0.4"/>
            <path d="M0,0C5,-61,-32,-86,-95,-90L-100,-46C-65,-53,-24,-35,0,0Z" fill="black" fill-opacity="0.4" transform="rotate(60)"/>
            <path d="M0,0C5,-61,-32,-86,-95,-90L-100,-46C-65,-53,-24,-35,0,0Z" fill="black" fill-opacity="0.4" transform="rotate(120)"/>
            <path d="M0,0C5,-61,-32,-86,-95,-90L-100,-46C-65,-53,-24,-35,0,0Z" fill="black" fill-opacity="0.4" transform="rotate(180)"/>
            <path d="M0,0C5,-61,-32,-86,-95,-90L-100,-46C-65,-53,-24,-35,0,0Z" fill="black" fill-opacity="0.4" transform="rotate(240)"/>
            <path d="M0,0C5,-61,-32,-86,-95,-90L-100,-46C-65,-53,-24,-35,0,0Z" fill="black" fill-opacity="0.4" transform="rotate(300)"/>
            <animateTransform attributeType="xml" attributeName="transform" type="rotate" from="0" to="360" dur="4s" repeatCount="indefinite"/>

        </g>
        <circle r="83" fill="url(#gloss)"/>
        <circle r="90" fill="none" stroke="black" stroke-width="2"/>
    </g>
</svg>

答案 1 :(得分：65)

这是我的努力。锥形梯度是通过计算由OP发布的动画GIF中的每个像素的最大值而提取的嵌入位图图像。半透明的黑色风车图案叠加在其上并进行动画制作，模糊滤镜可以摆脱JPEG伪影。

（编辑：添加了反光高光以使其看起来更像3D）

＆＃13;
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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
  width="121" height="121" viewBox="0 0 121 121">
  <defs>
    <clipPath id="circ">
      <circle r="60" cx="60.5" cy="60.5"/>
    </clipPath>
    <linearGradient id="shine" x1="0%" y1="0%" x2="0%" y2="100%">
      <stop offset="0%" style="stop-color:#fff;stop-opacity:0.6" />
      <stop offset="10%" style="stop-color:#fff;stop-opacity:0.3" />
      <stop offset="20%" style="stop-color:#fff;stop-opacity:0.1" />
      <stop offset="40%" style="stop-color:#fff;stop-opacity:0" />
    </linearGradient>
    <filter id="blur">
      <feGaussianBlur in="SourceGraphic" stdDeviation="2"/>
    </filter>
  </defs>
  <image width="121" height="121" filter="url(#blur)" xlink:href="data:image/jpeg;base64,
  /9j/4AAQSkZJRgABAQEASABIAAD/2wBDACAWGBwYFCAcGhwkIiAmMFA0MCwsMGJGSjpQdGZ6eHJm
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  xsbGxsbGxsbGxsbGxsbGxsbGxsbGxsbGxsbGxsbGxsbGxsbGxsbGxsbGxsb/wgARCAB5AHkDASEA
  AhEBAxEB/8QAGQAAAwEBAQAAAAAAAAAAAAAAAAECBAMF/8QAGAEAAwEBAAAAAAAAAAAAAAAAAAEC
  AwT/2gAMAwEAAhADEAAAAfQAXAM9O7YlzoXdLQ5QAIMSL6gA0DS50G6UyRYUyi2NBQhoHMMNzzM2
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  AIdRBrgAhggLOfsAGxVc5xFc6WiBgN08O0AdKbqM551lKuBUjpV1OXWNN0oqohQ84V5pUr3aac8u
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  Eq4eeENso1wlHa1j9Jj4SVrGXUokiEHh4iExjansPgb0pS8SwvLPQkZSixjwvurR6g+C8UeEHh8S
  RTAYx7W1ZDHhCS1OMVDGJc/XT//EABsRAQEBAQEBAQEAAAAAAAAAAAEAERAhMSBh/9oACAECAQE/
  EOHlsItTT9kstHnGIiODw4/eERZEMU6PAs4PrpyO+S3mz1vlttvdiWwXtvNtlzINvNlllDDDt5my
  ywyhvmGOyy2wwwwYcBZbYYYa7u/ktsMfjCGMz7w98s/0D9/J/8QAIxABAAICAgICAgMAAAAAAAAA
  AQARECExQSBRMGGhsXGBkf/aAAgBAQABPxDCgWxl/q4naJ0QW2rDhCfVnIGK21QfaF0xz/bgiWeL
  pKCIXTuzfbRYZLyX7mygIbujDSWOVotlzdeX3KUc/EAKA8y1W3DBssxuGW2eX4AL4dpnCbP68Khw
  NHixgcD4sUjkpn3zhfcvwBJDDgcV4K6rkl/UVS5cuXLhDpgtwMuEduFeFSmWl1yKOZUqVKm5WKlS
  sCCbXiB6Sh4jLgrwrJULQ6E6IFFZVisKw/mjdRdmQgjsglQalmFiokfqrtn1zQkAvwAwiomBwGGk
  1BgSymPWb/iBAhgBKlYGGEiCWv5gUUZJgsY7e36ylagQIEqJEggqXoV+8IgoPFBKYS229RtpD7jH
  hIYYg5SFtM/cMbbeoFFHwc04MnGHKcXl/9k=" clip-path="url(#circ)" />
  <g transform="translate(60.5,60.5)">
    <path d="M0 0A56 56 0 0 0 0 56 56 56 0 0 0 32.916 45.305 56 56 0 0 1 0 0 56
        56 0 0 0 53.259 17.305 56 56 0 0 0 53.259-17.305 56 56 0 0 1 0 0 56 56
        0 0 0 32.916-45.305 56 56 0 0 0 0-56 56 56 0 0 1 0 0 56 56 0 0 0
        -32.916-45.305 56 56 0 0 0-53.259-17.305 56 56 0 0 1 0 0 56 56 0 0 0
        -53.259 17.305 56 56 0 0 0-32.916 45.305 56 56 0 0 1 0 0Z"
        stroke="none" fill="#000" opacity="0.25" transform="rotate(0)">
      <animateTransform attributeName="transform" type="rotate" from="0"
          to="72" begin="0s" dur="0.6s" repeatCount="indefinite" />
    </path>
    <circle r="59" stroke="#000" stroke-width="2" fill="none" opacity="0.25" />
    <circle r="55" fill="url(#shine)" stroke="none" />
  </g>
</svg>
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答案 2 :(得分：57)

画布方法

由于这是一个加载动画，其中维度可能会在几乎没有用户交互的情况下修复， Canvas也是一个不错的选择，因为它不会向DOM添加任何额外的元素。画布绘图命令与SVG非常相似，browser support也不差。

一个缺点是Canvas没有自己的模糊过滤器（与SVG不同）。但是，可以通过使用CSS模糊过滤器（具有非常低的浏览器支持）或this Stack Overflow thread中提到的库来克服这一点。

背景渐变轮

使用类似于my answer here中详述的方法创建背景渐变轮。基本上我们在圆圈中找到多个点并绘制线条，每个线条都有不同的彩色笔划。通过修改每一行的hue值，我们可以绘制渐变轮。

在下面的屏幕截图中，第一张图片展示了如果我们只绘制了24行（每行之间的hue更改为15），背景将如何显示，第二张是我们的实际渐变轮总计360行，hue每行增加1。

<强>范

使用与SVG代码段中使用的方法相同的方法创建风扇。路径命令用于绘制每个辐条。虽然在SVG中使用use标记来重复形状，但可以在Canvas中使用循环。

SVG和Canvas之间的主要区别在于Canvas不能将变换原点作为rotate函数的参数，因此在应用旋转之前必须将上下文转换为中心点。

最后，画布必须剪裁成圆形，因为默认形状是正方形（因为高度和宽度相同）。下面的屏幕截图显示了风扇的未剪辑和剪辑版本。

然后将此风扇置于背景渐变轮的顶部。

3D效果：

通过在背景和风扇上添加一个透明度更高的小弧来提供顶部的3D效果。

以下是没有任何动画的完整图片的截图。

<强>动画：

使用window.requestAnimationFrame方法添加动画，该方法定期调用作为参数传递的函数。该方法通常每秒调用该函数约60次（根据MDN）。通过在每次迭代期间递增counter变量的值并将其添加到扇形辐条的角度，可以实现动画效果。

window.onload = function() {
  var canvas = document.querySelector("#canvas"),
    ctx = canvas.getContext("2d"),
    counter = 360;

  function fan() {
    ctx.clearRect(0, 0, 100, 100);
    for (var i = 0; i < 360; i++) {
      ctx.strokeStyle = "hsl(" + (180 - i) + ", 60%, 50%)";
      ctx.beginPath();
      ctx.moveTo(50, 50);
      x = 50 + 50 * Math.cos((i / 360) * Math.PI * 2);
      y = 50 + 50 * Math.sin((i / 360) * Math.PI * 2)
      ctx.lineTo(x, y);
      ctx.lineWidth = 2;
      ctx.stroke();
    }
    counter++;
    for (var j = 0; j < 6; j++) {
      ctx.save();
      ctx.beginPath();
      ctx.arc(50, 50, 50, 0, Math.PI * 2, true);
      ctx.clip();
      ctx.translate(50, 50);
      ctx.rotate(((60 * j) + counter) * Math.PI / 180);
      ctx.beginPath();
      ctx.moveTo(0, 0);
      ctx.bezierCurveTo(0, 0, 30, 50, 100, 0);
      x = 75 * Math.cos((-20 / 360) * Math.PI * 2);
      y = 75 * Math.sin((-20 / 360) * Math.PI * 2)
      ctx.lineTo(x, y);
      ctx.bezierCurveTo(x, y, (x - 30), (y + 40), 0, 0);
      ctx.closePath();
      ctx.fillStyle = "rgba(0,0,0,0.5)";
      ctx.fill();
      ctx.restore();
    }
    ctx.save();
    ctx.beginPath();
    ctx.arc(50, 50, 50, 0, Math.PI, true);
    ctx.arc(50, 55, 50, Math.PI, 0, false);
    ctx.fillStyle = "rgba(0,0,0,0.15)";
    ctx.closePath();
    ctx.fill();
    ctx.restore();
    window.requestAnimationFrame(fan);
  }
  fan();
}
<canvas width='100px' height='100px' id='canvas'></canvas>

SVG方法

上述相同的方法也可以与SVG一起使用。唯一的缺点是没有。为背景和粉丝添加到DOM的额外元素。

window.onload = function() {
  var colorWheel = document.querySelector("#color-wheel");
  for (var i = 0; i < 360; i++) {
    lineColor = "hsl(" + (180 - i) + ", 60%, 50%)";
    x = 50 + 50 * Math.cos((i / 360) * Math.PI * 2);
    y = 50 + 50 * Math.sin((i / 360) * Math.PI * 2);
    line = document.createElementNS("http://www.w3.org/2000/svg", "line");
    line.setAttribute('x1', 50);
    line.setAttribute('y1', 50);
    line.setAttribute('x2', x);
    line.setAttribute('y2', y);
    line.setAttribute('stroke', lineColor);
    line.setAttribute('stroke-width', 2);
    colorWheel.appendChild(line);
  }
}
<svg class="rotating-spinners" width="100px" height="100px" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
  <defs>
    <path id="spin-part" class="spike" d="M 50,50 c0,0 30,50 100,0 l-5,-35 c0,0 -30,50 -95,35Z" />
    <clipPath id="shape">
      <circle r="50" cx="50" cy="50" />
    </clipPath>
    <clipPath id="shade">
      <path d='M-5,55 a55,55 1 0,1 110,0 h-5 a50,50 1 0,0 -100,0' />
    </clipPath>
  </defs>
  <g id='color-wheel' clip-path='url(#shape)'>
  </g>
  <g id='fan' fill-opacity="0.5" clip-path='url(#shape)'>
    <use x="0" y="0" xlink:href="#spin-part" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(60, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(120, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(180, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(240, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(300, 50, 50)" />
    <animateTransform attributeType="xml" attributeName="transform" type="rotate" from="0,50,50" to="360,50,50" dur="6s" repeatCount="indefinite" />
  </g>
  <circle r='50' cx='50' cy='50' fill-opacity='0.15' clip-path='url(#shade)' />
</svg>

混合方法

或者，如果您对风扇的额外元素没有任何问题，但只是想避免添加的360 line元素，您可以使用Canvas（用于背景）和SVG的混合粉丝喜欢在下面的片段中。

window.onload = function() {
  var canvas = document.querySelector("#canvas");
  var ctx = canvas.getContext("2d");

  for (var i = 0; i < 360; i++) {
    ctx.strokeStyle = "hsl(" + (180 - i) + ", 60%, 50%)";
    ctx.beginPath();
    ctx.moveTo(50, 50);
    x = 50 + 50 * Math.cos((i / 360) * Math.PI * 2);
    y = 50 + 50 * Math.sin((i / 360) * Math.PI * 2)
    ctx.lineTo(x, y);
    ctx.lineWidth = 2;
    ctx.stroke();
  }
  ctx.save();
  ctx.beginPath();
  ctx.arc(50, 50, 50, 0, Math.PI, true);
  ctx.arc(50, 55, 50, Math.PI, 0, false);
  ctx.fillStyle = "rgba(0,0,0,0.15)";
  ctx.closePath();
  ctx.fill();
  ctx.restore();
}
div {
  position: relative;
  height: 100px;
  width: 100px;
}
canvas,
svg {
  position: absolute;
  top: 0px;
  left: 0px;
  height: 100%;
  width: 100%;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<div class='container'>
  <canvas width='100px' height='100px' id='canvas'></canvas>
  <svg class="rotating-spinners" width="100%" height="100%" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <defs>
      <path id="spin-part" class="spike" d="M 50,50 c0,0 30,50 100,0 l-5,-35 c0,0 -30,50 -95,35Z" />
      <clipPath id="shape">
        <circle r="50" cx="50" cy="50" />
      </clipPath>
    </defs>
    <g id='fan' fill-opacity="0.5" clip-path="url(#shape)">
      <use x="0" y="0" xlink:href="#spin-part" />
      <use x="0" y="0" xlink:href="#spin-part" transform="rotate(60, 50, 50)" />
      <use x="0" y="0" xlink:href="#spin-part" transform="rotate(120, 50, 50)" />
      <use x="0" y="0" xlink:href="#spin-part" transform="rotate(180, 50, 50)" />
      <use x="0" y="0" xlink:href="#spin-part" transform="rotate(240, 50, 50)" />
      <use x="0" y="0" xlink:href="#spin-part" transform="rotate(300, 50, 50)" />
      <animateTransform attributeType="xml" attributeName="transform" type="rotate" from="0,50,50" to="360,50,50" dur="6s" repeatCount="indefinite" />
    </g>
  </svg>
</div>

答案 3 :(得分：16)

我必须使用SVG和CSS渐变的混合物，我知道这是反对请求，但我知道。我使用了一些原始代码，主要是螺旋桨形状的SVG部件。

径向渐变使用12个li元素。

.wheel,
.umbrella,
.color {
  content: "";
  position: absolute;
  border-radius: 50%;
  width: 15em;
  height: 15em;
  margin: 0;
  padding: 0;
}
.wheel {
  overflow: hidden;
  width: 15em;
  height: 15em;
  position: relative;
}
.umbrella {
  position: relative;
  -webkit-transform: scale(1.35);
}
.color,
.color:nth-child(n+7):after {
  clip: rect(0, 15em, 15em, 7.5em);
}
.color:after,
.color:nth-child(n+7) {
  content: "";
  position: absolute;
  border-radius: 50%;
  left: calc(50% - 7.5em);
  top: calc(50% - 7.5em);
  width: 15em;
  height: 15em;
  clip: rect(0, 7.5em, 15em, 0);
}
.color:nth-child(1):after {
  background-color: #9ED110;
  transform: rotate(30deg);
  z-index: 12;
}
.color:nth-child(2):after {
  background-color: #50B517;
  transform: rotate(60deg);
  z-index: 11;
}
.color:nth-child(3):after {
  background-color: #179067;
  transform: rotate(90deg);
  z-index: 10;
}
.color:nth-child(4):after {
  background-color: #476EAF;
  transform: rotate(120deg);
  z-index: 9;
}
.color:nth-child(5):after {
  background-color: #9f49ac;
  transform: rotate(150deg);
  z-index: 8;
}
.color:nth-child(6):after {
  background-color: #CC42A2;
  transform: rotate(180deg);
  z-index: 7;
}
.color:nth-child(7):after {
  background-color: #FF3BA7;
  transform: rotate(180deg);
}
.color:nth-child(8):after {
  background-color: #FF5800;
  transform: rotate(210deg);
}
.color:nth-child(9):after {
  background-color: #FF8100;
  transform: rotate(240deg);
}
.color:nth-child(10):after {
  background-color: #FEAC00;
  transform: rotate(270deg);
}
.color:nth-child(11):after {
  background-color: #FFCC00;
  transform: rotate(300deg);
}
.color:nth-child(12):after {
  background-color: #EDE604;
  transform: rotate(330deg);
}
<div class="wheel">
  <ul class="umbrella">
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
  </ul>
</div>

然后可以将这12个元素模糊在一起，形成平滑的渐变。

然后，我为旋转部件制作动画，以达到您所需的效果。

var rotation = 0;

$(document).ready(function() {
  setInterval(function() {
    rotation += 1;
    $('.wheel svg').css({
      'transform': 'rotate(' + rotation + 'deg)'
    });;
  }, 10);
});
.wheel,
.umbrella,
.color {
  content: "";
  position: absolute;
  border-radius: 50%;
  width: 15em;
  height: 15em;
  margin: 0;
  padding: 0;
}
.wheel {
  overflow: hidden;
  width: 15em;
  height: 15em;
  position: relative;
}
.umbrella {
  position: relative;
  filter: blur(.75em);
  -webkit-filter: blur(.75em);
  -moz-filter: blur(.75em);
  -o-filter: blur(.75em);
  -ms-filter: blur(.75em);
  filter: url(#blur);
  filter: progid: DXImageTransform.Microsoft.Blur(PixelRadius='.75');
  -webkit-transform: scale(1.35);
}
.color,
.color:nth-child(n+7):after {
  clip: rect(0, 15em, 15em, 7.5em);
}
.color:after,
.color:nth-child(n+7) {
  content: "";
  position: absolute;
  border-radius: 50%;
  left: calc(50% - 7.5em);
  top: calc(50% - 7.5em);
  width: 15em;
  height: 15em;
  clip: rect(0, 7.5em, 15em, 0);
}
.color:nth-child(1):after {
  background-color: #9ED110;
  transform: rotate(30deg);
  z-index: 12;
}
.color:nth-child(2):after {
  background-color: #50B517;
  transform: rotate(60deg);
  z-index: 11;
}
.color:nth-child(3):after {
  background-color: #179067;
  transform: rotate(90deg);
  z-index: 10;
}
.color:nth-child(4):after {
  background-color: #476EAF;
  transform: rotate(120deg);
  z-index: 9;
}
.color:nth-child(5):after {
  background-color: #9f49ac;
  transform: rotate(150deg);
  z-index: 8;
}
.color:nth-child(6):after {
  background-color: #CC42A2;
  transform: rotate(180deg);
  z-index: 7;
}
.color:nth-child(7):after {
  background-color: #FF3BA7;
  transform: rotate(180deg);
}
.color:nth-child(8):after {
  background-color: #FF5800;
  transform: rotate(210deg);
}
.color:nth-child(9):after {
  background-color: #FF8100;
  transform: rotate(240deg);
}
.color:nth-child(10):after {
  background-color: #FEAC00;
  transform: rotate(270deg);
}
.color:nth-child(11):after {
  background-color: #FFCC00;
  transform: rotate(300deg);
}
.color:nth-child(12):after {
  background-color: #EDE604;
  transform: rotate(330deg);
}
body {
  padding: 5px;
}
.wheel svg {
  position: absolute;
  top: 0;
  opacity: .5;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<figure class="animation-wrapper wheel">
  <ul class="umbrella">
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
    <li class="color"></li>
  </ul>
  <svg class="rotating-spinners" width="100%" height="100%" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <defs>
      <path id="spin-part" class="spike" d="M 65,-40 C 65,-40 80,20 50,50 60,40 50,-40 50,-40Z" />
    </defs>
    <use x="0" y="0" xlink:href="#spin-part" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(60, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(120, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(180, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(240, 50, 50)" />
    <use x="0" y="0" xlink:href="#spin-part" transform="rotate(300, 50, 50)" />
  </svg>
</figure>

答案 4 :(得分：1)

这是一个纯CSS解决方案，在这里我将考虑仅使用一个元素。我将依靠我创建的in this previous answer的形状，而在上面，我将考虑一个conic-gradient()。

实际上，conic-gradient()仅在Chrome和Safari中受支持，但我们很快将提供更好的支持：

.box {
  --R:50px; /*Radius*/
  --c1:grey; /*first color*/
  --c2:#fff; /*second color*/
  
  --g1:var(--c1) 98%, transparent 100%;
  --g2:var(--c2) 98%, transparent 100%;
  width:calc(2*var(--R));
  height:calc(2*var(--R));
  border-radius:100%;
  border:1px solid;
  position:relative;
  overflow:hidden;
  display:inline-block;
  background:conic-gradient(rgba(128, 0, 128,0.7), rgba(0, 0, 255,0.7),rgba(0, 128, 0,0.7),rgba(255, 255, 0,0.7), rgba(255, 0, 0,0.7), rgba(128, 0, 128,0.7));
  box-shadow:0 3px 5px inset rgba(0,0,0,0.5);
}
.box::before,
.box::after{
  content:"";
  position:absolute;
  z-index:-1;
  top:0;
  bottom:0;
  left:0;
  width:50%;
  background:
     /*we rotate by 30deg so will use :
       sin(30deg)*R = 0.5xR   
       cos(30deg)*R = 0.866xR 
     */
    radial-gradient(circle var(--R) at calc(var(--R) + 0.866*var(--R)) calc(var(--R) - 0.5*var(--R))  ,var(--g1)),
    radial-gradient(circle var(--R) at calc(var(--R) + 0.5*var(--R))   calc(var(--R) - 0.866*var(--R)),var(--g2)),
    radial-gradient(circle var(--R) at var(--R)                        0                              ,var(--g1)),
    radial-gradient(circle var(--R) at calc(var(--R) - 0.5*var(--R))   calc(var(--R) - 0.866*var(--R)),var(--g2)),
    radial-gradient(circle var(--R) at calc(var(--R) - 0.866*var(--R)) calc(var(--R) - 0.5*var(--R))  ,var(--g1)),
    radial-gradient(circle var(--R) at 0                               var(--R)                        ,var(--g2)),
    radial-gradient(circle var(--R) at calc(var(--R) - 0.866*var(--R)) calc(var(--R) + 0.5*var(--R))  ,var(--g1));   
    transform-origin:right;
    animation:animate 3s linear infinite;
}

/*the same shape rotated*/
.box::after {
   animation-delay:-1.5s;
}

@keyframes animate {
  to {
    transform:rotate(-360deg);
  }
}
<div class="box"></div>

输出

enter image description here

这里是另一个方向（如动画）

.box {
  --R:50px; /*Radius*/
  --c1:grey; /*first color*/
  --c2:#fff; /*second color*/
  
  --g1:var(--c1) 98%, transparent 100%;
  --g2:var(--c2) 98%, transparent 100%;
  width:calc(2*var(--R));
  height:calc(2*var(--R));
  border-radius:100%;
  border:1px solid;
  position:relative;
  overflow:hidden;
  display:inline-block;
  background:conic-gradient(rgba(128, 0, 128,0.7), rgba(0, 0, 255,0.7),rgba(0, 128, 0,0.7),rgba(255, 255, 0,0.7), rgba(255, 0, 0,0.7), rgba(128, 0, 128,0.7));
  box-shadow:0 3px 5px inset rgba(0,0,0,0.5);
}
.box::before,
.box::after{
  content:"";
  position:absolute;
  z-index:-1;
  top:0;
  bottom:0;
  left:0;
  width:50%;
  background:
     /*we rotate by 30deg so will use :
       sin(30deg)*R = 0.5xR   
       cos(30deg)*R = 0.866xR 
     */
    radial-gradient(circle var(--R) at calc(var(--R) + 0.866*var(--R)) calc(var(--R) - 0.5*var(--R))  ,var(--g1)),
    radial-gradient(circle var(--R) at calc(var(--R) + 0.5*var(--R))   calc(var(--R) - 0.866*var(--R)),var(--g2)),
    radial-gradient(circle var(--R) at var(--R)                        0                              ,var(--g1)),
    radial-gradient(circle var(--R) at calc(var(--R) - 0.5*var(--R))   calc(var(--R) - 0.866*var(--R)),var(--g2)),
    radial-gradient(circle var(--R) at calc(var(--R) - 0.866*var(--R)) calc(var(--R) - 0.5*var(--R))  ,var(--g1)),
    radial-gradient(circle var(--R) at 0                               var(--R)                        ,var(--g2)),
    radial-gradient(circle var(--R) at calc(var(--R) - 0.866*var(--R)) calc(var(--R) + 0.5*var(--R))  ,var(--g1));   
    transform-origin:right;
    animation:animate 3s linear infinite;
}

/*the same shape rotated*/
.box::after {
   animation-delay:-1.5s;
}

@keyframes animate {
  from {
    transform:scale(-1,1) rotate(0deg);
  }
  to {
    transform:scale(-1,1) rotate(-360deg);
  }
}
<div class="box"></div>

输出

enter image description here

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