圈加载动画 [英] Circle loading animation
本文介绍了圈加载动画的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试创建Apple的OS X圈子加载动画。
I'm trying to create Apple's OS X circle loading animation.
我到目前为止所做的尝试：
What I have tried so far:
.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);
}
<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>
线性渐变看起来没有正确排列，因为我找不到一个方法使渐变向两个方向。
The linear gradients don't seem to line up correctly since i couldn't find a way to make the gradients go in two directions.
有一种方法，使用只创建CSS或SVG不混合他们像我做过的？
Is there a way to create this using only CSS or SVG without mixing them like I have done?
还是有其他解决方案，我可以使用像画布或某种图像魔法吗？
Or are there other solutions I can use like canvas or some kind of image magic?
推荐答案
这是我的努力。锥形梯度是通过计算由OP张贴的动画GIF中的每个像素的最大值而提取的嵌入式位图图像。
Here's my effort. The conical gradient is an embedded bitmap image extracted by calculating the maximum value of each pixel in the animated GIF posted by the OP. A semi-opaque black windmill pattern is superimposed on top of that and animated, and a blur filter gets rid of the JPEG artefacts.
（编辑：添加了一个反光高亮显示让它看起来多一点3D）
( Added a reflective highlight to make it look a bit more 3D)
<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,
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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>
这篇关于圈加载动画的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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