WXXR/miniprogram/components/template/xr-template-loading/index.wxml

<xr-scene id="xr-scene" bind:ready="handleReady">
  <xr-assets bind:progress="handleAssetsProgress" bind:loaded="handleAssetsLoaded">
    <xr-asset-material asset-id="standard-mat" effect="standard" />
  </xr-assets>
  <xr-node>
    <xr-node node-id="camera-target" position="0 0 0"></xr-node>
    <xr-mesh node-id="floor-plane" position="0 -1 0" rotation="0 0 0" scale="10 1 10" geometry="plane"
      uniforms="u_baseColorFactor:1 1 1 1" receive-shadow
    ></xr-mesh>
    <!-- glTF -->
    <xr-node wx:if="{{gltfLoaded}}">
      <xr-node
        wx:for="{{gltfIdList}}" wx:for-item="gltfId"
        wx:key="gltfId"
      >
        <xr-gltf
          wx:if="{{gltfId == 0}}"
          position="-1 -0.46 -1" rotation="0 0 0"
          scale="0.6 0.6 0.6"
          model="gltf-{{gltfId}}"
          cast-shadow
        ></xr-gltf>
        <xr-gltf
          wx:if="{{gltfId == 1}}"
          position="1 -0.98 -1" rotation="0 0 0"
          scale="0.015 0.015 0.015"
          model="gltf-{{gltfId}}"
          cast-shadow
        ></xr-gltf>
      </xr-node>
    </xr-node>
    <!-- Image -->
    <xr-node wx:if="{{imageLoaded}}">
      <xr-node
        wx:for="{{imageIdList}}" wx:for-item="imageId"
        wx:key="imageId"
      >
        <xr-mesh
          wx:if="{{imageId === 2}}"
          position="1 1 0" scale="1 1 0.2"
          geometry="cube"  material="texture-mat-{{imageId}}"
          cast-shadow
        />
        <xr-mesh
          wx:if="{{imageId === 3}}"
          position="-1 1 0" scale="1 1 0.2"
          geometry="cube" material="texture-mat-{{imageId}}"
          cast-shadow
        />
      </xr-node>
    </xr-node>
    <!-- Video -->
    <xr-node wx:if="{{videoLoaded}}">
      <xr-node
        wx:for="{{videoIdList}}" wx:for-item="videoId"
        wx:key="videoId"
      >
      <xr-mesh
        wx:if="{{videoId === 4}}"
        node-id="mesh-cube" position="0 -0.5 1" scale="0.8 1.4 0.8"
        geometry="cube" material="video-mat-{{videoId}}"
        cast-shadow
      />
      <xr-mesh
        wx:if="{{videoId === 5}}"
        node-id="mesh-cube" position="-1.5 -0.6 1" scale="1.2 0.8 0.8"
        geometry="cube" material="video-mat-{{videoId}}"
        cast-shadow
      />
      <xr-mesh
        wx:if="{{videoId === 6}}"
        node-id="mesh-cube" position="1.5 -0.6 1" scale="1.2 0.8 0.8"
        geometry="cube" material="video-mat-{{videoId}}"
        cast-shadow
      />
      </xr-node>
    </xr-node>
    <xr-camera
      id="camera" node-id="camera" position="0 3 5" clear-color="0.8 0.8 0.8 1"
      target="camera-target"
      camera-orbit-control=""
    ></xr-camera>
  </xr-node>
  <xr-node node-id="lights">
    <xr-light type="ambient" color="1 1 1" intensity="1" />
    <xr-light type="directional" rotation="40 170 0" color="1 1 1" intensity="3" cast-shadow/>
  </xr-node>
</xr-scene>