用anime.js实现SVG线动画

Question

我正在修改一支笔来创建SVG动画。我希望绿色元素完全遵循线的路径，但它不是。此外，它没有在一行中正确地循环8路径，而是在循环的十字路口反弹。任何如何实现这一点的建议都将不胜感激，因为我还没有找到解决方案

var path = anime.path('path');

anime({
  targets: 'div',
  translateX: path,
  translateY: path,
  rotate: path,
  duration: 6000,
  loop: true,
  easing: 'linear'
});

下面是代码：https://codepen.io/anon/pen/VWYKwB

Answer 1

几天前我告诉过你，你的道路有问题。你必须重建你的道路。

​

  <!doctype html>
  <html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Document</title>
  </head> 
  <body>
    <button onclick="dashAni(myPath, 50, 3500)">start</button>
    <svg id="mySVG"  width="200" height="200" viewBox="0 0 500 500">
        <path id="myPath" d="M 50,250 c 0 -100   150 -100   200 0 
                                      c 50 100   200 100   200 0
                                      c -0 -100   -150 -100   -200 0
                                      c -50 100   -200 100   -200 0
                                      z" 
        stroke="#eee"
        stroke-width="5" fill="none" />
    </svg>
    <script>
      var dashAni = function(path, length, duration){
        var dashPath = path.cloneNode(true);
        mySVG.appendChild(dashPath);
        var pathLen=path.getTotalLength();  
        var aktPos=0
        var sumSteps = duration / (1000/60) // 60 pics per second
        var step=0;
        var pathAnim;
        dashPath.setAttribute('stroke-dasharray', length + ' ' + (pathLen - length));
        dashPath.setAttribute('stroke', "red");
        dashPath.setAttribute('stroke-dashoffset', aktPos);

        var anim=function(){
           aktPos = pathLen/sumSteps*step*-1;
            //aktLen = easeInOutQuad(step/sumSteps)*len;
           dashPath.setAttribute('stroke-dasharray', length + ' ' + pathLen);
           dashPath.setAttribute('stroke-dashoffset', aktPos);

           if (step <= (sumSteps)){
            step++;
            pathAnim = setTimeout(anim, 1000/60) //1000/60 pics/second
            } else {
              mySVG.removeChild(dashPath);
              clearTimeout(pathAnim);
            }
        }
       anim();
      }
    </script>
  </body>
  </html>

​