circle
    .animate()
    .when(1000, {
      position: [500, 0],
      scale: [2, 1],
    })
    .when(2000, {
      position: [200, 200],
      scale: [1, 1],
    })
    .when(3000, {
      position: [0, 200],
      scale: [1, 2],
    })
    .when(4000, {
      position: [0, 0],
      scale: [1, 1],
    })
    .during(function () {
      console.log(circle.animationProcessList.length);
    })
    .done(function () {
      console.log(circle.animationProcessList.length);
    })
    .start(); //.start(true)

<view class="page">
  <view class="page__hd">
    <view class="page__title">Quark Renderer 小程序示例1</view>
  </view>
  <view class="page__bd page__bd_spacing">
    <view style="width:100%;height:500px;">
      <canvas style="width: 300px; height: 500px;" canvas-id="firstCanvas"></canvas>
    </view>
  </view>
</view>

onReady: function () {
    let ctx = wx.createCanvasContext('firstCanvas');
    //注意这里的初始化参数，因为微信小程序不允许操作 DOM，所以引擎不能自动获取到宽度高度，这里需要手动传进去
    let qr = QuarkRenderer.init(ctx,{width:300,height:500,renderer:'canvas'});
    let polygon = new QuarkRenderer.Polygon({
        position: [100, 100],
        scale: [1, 1],
        style: {
            fill: 'red'
        }
    });

    setInterval(function () {
        let len = Math.round(Math.random() * 100);
        let points = [];
        let r = (Math.random() * 100);
        for (let i = 0; i <= len; i++) {
            let phi = i / len * Math.PI * 2;
            let x = Math.cos(phi) * r + 100;
            let y = Math.sin(phi) * r + 100;
            points.push([x, y]);
        }
        polygon.animateTo({
            shape: {
                points: points
            }
        }, 500, 'cubicOut');
    }, 1000);
    qr.add(polygon);
}