WXDemo/miniprogram/pages/ar-classic/scene-classic-portal/index.wxml

<xr-demo-viewer
  title="传送门效果案例"
  intro="基于 平面识别与模版剔除 实现的基本传送门效果案例."
  hint="进入后等待资源加载完成，然后按照弹出提示操作"
>
  <xr-classic-portal
    disable-scroll
    id="main-frame"
    width="{{renderWidth}}"
    height="{{renderHeight}}"
    style="width:{{width}}px;height:{{height}}px;top:{{top}}px;left:{{left}}px;display:block;"
    bind:arTrackerState="handleARTrackerState"
  />

  <view wx:if="{{arTrackerShow}}" style="text-align: center;padding: 12px;">
    <view>Tracker识别状态：{{arTrackerState}}</view>
    <view>错误信息：{{arTrackerError}}</view>
  </view>
</xr-demo-viewer>