SVG 笔划破折号数组 CSS 动画反转路线?

SVG stroke dash array CSS animation reverses course?

我有一个简单的路径,我正在向其应用破折号数组和使用 CSS 的破折号偏移量。然后我正在为这个简单的结构制作动画。动画将破折号数组和偏移量更改为先减小然后再增大。

奇怪的是,运动似乎在中途反转了。有人能帮忙吗?我敢肯定它实际上并没有倒转,而是数学造成了意想不到的视觉效果。

.path {
  stroke-dasharray: 10;
  stroke-dashoffset: 10 30;
  animation: dash 5s linear infinite;
}

@keyframes dash {
   50%{
    stroke-dashoffset: 35%;
    stroke-dasharray: 0 87.5%;
  }
}
<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
  width="340px" height="333px" viewBox="0 0 340 333" enable-background="new 0 0 340 333" xml:space="preserve">

  <path class="path" fill="#FFFFFF" stroke="#000000" stroke-width="4" stroke-miterlimit="10" d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
 s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
 C46.039,146.545,53.039,128.545,66.039,133.545z"/>
  
</svg>

对于道具,上面是 this beautiful work.

的非常简化的版本

MDN

If a keyframe rule doesn't specify the start or end states of the animation (that is, 0%/from and 100%/to), browsers will use the element's existing styles for the start/end states. This can be used to animate an element from its initial state and back.

您在 50% 处有一个关键帧,因此动画会在中场休息时转到该关键帧,然后在全场休息时回到初始状态。