生成一段vue代码，绘制一条折线，并可以沿着折线拖动一个圆形元素，拖动范围仅限折线上

可以尝试下面的Vue代码：

<template>
  <div class="container">
    <svg viewBox="0 0 500 300">
      <path
        class="line"
        :d="line"
        fill="none"
        stroke="#333"
        stroke-linecap="round"
        stroke-linejoin="round"
      />
      <circle
        :cx="circleX"
        :cy="circleY"
        r="10"
        fill="#007aff"
        @mousedown="handleMouseDown"
        @mousemove="handleMouseMove"
        @mouseup="handleMouseUp"
      />
    </svg>
  </div>
</template>

<script>
export default {
  data() {
    return {
      pathPoints: [
        [0, 150],
        [50, 100],
        [100, 120],
        [150, 60],
        [200, 90],
        [250, 130],
        [300, 90],
        [350, 80],
        [400, 110],
        [450, 70],
        [500, 130]
      ],
      circleX: 50,
      circleY: 100,
      isDragging: false,
      dragStartX: 0,
      dragStartY: 0
    };
  },
  computed: {
    line() {
      return this.pathPoints.map(p => `${p[0]},${p[1]}`).join(' ');
    }
  },
  methods: {
    handleMouseDown(event) {
      this.isDragging = true;
      this.dragStartX = event.clientX;
      this.dragStartY = event.clientY;
    },
    handleMouseMove(event) {
      if (this.isDragging) {
        const deltaX = event.clientX - this.dragStartX;
        const deltaY = event.clientY - this.dragStartY;
        const { x, y } = this.getNearestPoint(
          this.circleX + deltaX,
          this.circleY + deltaY
        );
        this.circleX = x;
        this.circleY = y;
      }
    },
    handleMouseUp(event) {
      this.isDragging = false;
    },
    getNearestPoint(cx, cy) {
      const distances = this.pathPoints.map(p => {
        const dx = cx - p[0];
        const dy = cy - p[1];
        return Math.sqrt(dx * dx + dy * dy);
      });
      const index = distances.indexOf(Math.min(...distances));
      return {
        x: this.pathPoints[index][0],
        y: this.pathPoints[index][1]
      };
    }
  }
};
</script>

<style>
.container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.line {
  stroke-width: 3;
}
</style>

这段代码绘制了一个简单的折线，并在折线上放置了一个可拖动的圆形元素。你可以将`pathPoints`数组中的值改为你需要绘制的折线点的坐标，也可以修改样式来适应你自己的设计。