css3渐变的朝阳效果 [英] Sunburst effect with css3 gradient

问题描述

我已经四处寻找并尝试了几天，但是我似乎无法100％正确地使用它...我正在尝试通过css3渐变实现以下效果:

I have been looking around and trying for a few days, but i just cant seem to get it 100% right... i am trying to achieve the following effect with css3 gradient:

我得到的最接近的是 演示 :

the closest i have gotten is DEMO:

html {
  background:
    linear-gradient(80deg, transparent 50%, #ddd 50%, #ddd),
    linear-gradient(90deg, transparent 50%, #ddd 50%, #ddd),
    linear-gradient(82deg, transparent 50%, #eee 50%, #eee),
    linear-gradient(67deg, transparent 50%, #ddd 50%, #ddd),
    linear-gradient(52deg, transparent 50%, #eee 50%, #eee),
    linear-gradient(37deg, transparent 50%, #ddd 50%, #ddd),
    linear-gradient(22deg, transparent 50%, #eee 50%, #eee),
    linear-gradient(7deg, transparent 50%, #ddd 50%, #ddd),
    linear-gradient(-8deg, transparent 50%, #eee 50%, #eee),
    linear-gradient(-23deg, transparent 50%, #ddd 50%, #ddd),
    linear-gradient(-38deg, transparent 50%, #eee 50%, #eee),
    linear-gradient(-53deg, transparent 50%, #ddd 50%, #ddd),
    linear-gradient(-68deg, transparent 50%, #eee 50%, #eee),
    linear-gradient(-83deg, transparent 50%, #ddd 50%, #ddd);
  background-position: center -100%;
  background-color: #eee;
  background-size: 100% 200%;
  min-height: 100%;
}

我将继续尝试..尽管如此，我们将不胜感激.

I will continue attempting it.. any help is greatly Appreciated though.

更新:

必须有一种更好/可重复使用的方法来执行此操作...调查一个scss解决方案，这是我到目前为止所拥有的:

There has to be a better/reusable way of doing this... looking into a scss solution, here is what i have thus far:

.sunburst {
  @for $ray from 1 through 26 {
    $color: #eee;
    $degree: 7;
    @if $ray%2 == 0 {
      $color: #ddd;
    }
    background:linear-gradient($degree+deg, transparent 50%, $color 50%, $color),
  }
}

现在，它只是它背后的实际数学，我试图找出...试图从 pow.js ，但是如果您像我一样在数学上很糟糕，那有点困难...

Now its just the actual maths behind it i am trying to figure out... attempting to steal logic from pow.js, but kind of difficult if your as terrible at maths as i am...

推荐答案

您可以使用:before和:after:pseudo-elements获得此效果.

You could use :before and :after :pseudo-elements to get this effect.

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
}
#grad {
  position: relative;
  width: 100%;
  height: 100%;
}
#grad:after, #grad:before {
  content: '';
  position: absolute;
  background: linear-gradient(90deg, transparent 50%, black 50%, black), linear-gradient(82deg, transparent 50%, #12E0DB 50%, #12E0DB), linear-gradient(67deg, transparent 50%, #000000 50%, #000000), linear-gradient(52deg, transparent 50%, #12E0DB 50%, #12E0DB), linear-gradient(37deg, transparent 50%, #000000 50%, #000000), linear-gradient(22deg, transparent 50%, #12E0DB 50%, #12E0DB), linear-gradient(7deg, transparent 50%, #000000 50%, #000000), linear-gradient(-8deg, transparent 50%, #12E0DB 50%, #12E0DB), linear-gradient(-23deg, transparent 50%, #000000 50%, #000000), linear-gradient(-38deg, transparent 50%, #12E0DB 50%, #12E0DB), linear-gradient(-53deg, transparent 50%, #000000 50%, #000000), linear-gradient(-68deg, transparent 50%, #12E0DB 50%, #12E0DB), linear-gradient(-83deg, transparent 50%, #000000 50%, #000000), linear-gradient(-90deg, transparent 50%, #12E0DB 50%, #12E0DB);
  background-position: 0% 0%;
  background-size: 200% 100%;
  height: 100%;
  width: 50%;
}
#grad:before {
  left: 50%;
  transform: rotate(180deg);
}

<div id="grad"></div>

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