<div class="box">
  <div class="circle">
    <div class="dot"></div>
    <div class="ray">
      <div class="dot"></div>
    </div>
    <div class="ray-box"></div>
  </div>
</div>

<div class="control">
  <div class="item">
     <input type="checkbox"  id="path-play-state"/>
    <label for="path-play-state">
      Animate <code>offset-path</code>
    </label>
  </div>
</div>

* {
  box-sizing: border-box;
}

body {
  width: 100vw;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10vh;
}

.box {
  width: 60vh;
  height: 60vh;
  border: 1px dashed #666;
  position: relative;
  margin: 1vh;
}

.circle {
  width: 60vh;
  height: 60vh;
  border: 1px dashed #f36;
  border-radius: 50%;
}

.dot {
  width: 1vh;
  height: 1vh;
  background-color: #000;
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.ray {
  width: 10vh;
  height: 10vh;
  background-color: #89f;
  border: 2vh solid;
  border-color: #F44336 #9C27B0 #2196F3 #009688;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  
  .dot {
    background-color: red;
  }
  
  &.play {
    offset-path: ray(0deg closest-side);
    animation: rayAni 3000ms infinite linear;
  }
}
.ray-box{
  width: 10vh;
  height: 10vh;
  border: 1px dashed #666;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.control {
  padding-top: 4vh;
  display: flex;
  align-items: center;
  justify-content: center;
  
  .item {
    margin: 0 1vh;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}


@keyframes rayAni {
  from {
    offset-path: ray(0deg closest-side);
  }
  to {
    offset-path: ray(360deg closest-side);
  }
}

const toggle = document.querySelector('#path-play-state')
const aniEle = document.querySelector('.ray')

toggle.addEventListener('click', (e) => {
  console.log(e.target.checked)
  if (e.target.checked) {
    aniEle.classList.add('play')
  } else {
    aniEle.classList.remove('play')
  }
})