完善

src/app/working-area/working-area.component.ts

@@ -967,7 +967,7 @@ export class WorkingAreaComponent extends EventEmitter implements OnInit, AfterV
   /**
    * 刷新背景图
    */
-  public async refreshBackgroundImage(imageUrl:string,imageAngle:number): Promise<void> {
+  public async refreshBackgroundImage(imageUrl:string = this.canvasData.selectStorey.imageUrl,imageAngle:number = this.canvasData.selectStorey.imageAngle): Promise<void> {
     if (!imageUrl) {
       this.backgroundImage.visible = false;
     } else {