mini-ar-demo/miniprogram/components/xr-ar-vio-marker-1/index.js

Component({
  // behaviors: [require('../common/share-behavior').default],
  properties: {
    a: Number,
  },
  data: {
    loaded: false,
    arReady: false,
  },
  lifetimes: {
    async attached() {
      console.log('data', this.data)
    }
  },
  methods: {
    handleReady({
      detail
    }) {
      const xrScene = this.scene = detail.value;
      this.mat = new(wx.getXrFrameSystem().Matrix4)();
      console.log('xr-scene', xrScene)
      this.triggerEvent('ready')
    },
    handleAssetsProgress: function ({
      detail
    }) {
      // console.log('assets progress', detail.value.progress);
      const progress =
        Math.floor(detail.value.progress * 100)

      this.triggerEvent('progress', progress)
    },
    handleAssetsLoaded: function ({
      detail
    }) {
      console.log('assets loaded', detail.value);
      const el = detail.value.target;
      // this.setData({loaded: true});
      this.scene.event.addOnce('touchstart', this.placeNode.bind(this));
      this.triggerEvent('loaded')

    },
    handleARReady: function ({
      detail
    }) {
      console.log('arReady', this.scene.ar.arVersion);
    },
    placeNode(event) {
      const {
        clientX,
        clientY
      } = event.touches[0];
      const {
        frameWidth: width,
        frameHeight: height
      } = this.scene;

      if (clientY / height > 0.8 && clientX / width < 0.2) {
        this.scene.getNodeById('setitem').visible = false;
        this.scene.ar.resetPlane();
      } else {
        this.scene.ar.placeHere('setitem', true);
        console.error('show-gltf')
        if (this.video) {
          this.video.play()
        }

      }

      this.scene.event.addOnce('touchstart', this.placeNode.bind(this));
    },
    handleGLTFLoaded({
      detail
    }) {
      const el = detail.value.target;
      console.error('handleGLTFLoaded')
      const gltf = el.getComponent("gltf");
      const video = this.scene.assets.getAsset("video-texture", "cat");
      const newMat = this.scene.assets.getAsset("material", "catMat");

      this.video = video

      for (const mesh of gltf.getPrimitivesByNodeName("video")) {
        mesh.material = newMat
      }
    }
  }
})