Question: How can external users get this.controls

[zcloudyun]

// vue文件使用
onLoaded1() {
this.viewer1 = this.$refs.viewer1.GetViewer();
const layers1 = this.viewer1.GetLayers();
layers1.forEach(lyr => Vue.set(lyr, 'isVisible', true));
this.layers1 = layers1;
this.canvas1 = this.viewer1.GetCanvas();
this.scene1 = this.viewer1.GetScene();
this.camera1 = this.viewer1.GetCamera();
this.renderer1 = this.viewer1.GetRenderer();
this.$nextTick(() => {
this.controls1 = this.viewer1.GetControls();
this.controls1.addEventListener('change', () => {
this.camera.position.copy(this.camera1.position);
this.camera.zoom = this.camera1.zoom;
this.camera.updateProjectionMatrix();
this.viewer.Render();
});
});
},

//DxfViewer.js中添加
GetControls(){
return this.controls
}