修正imageAngle = undefind 的时候不显示的的问题

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

@@ -109,11 +109,11 @@ export class WorkingAreaComponent extends EventEmitter implements OnInit, AfterV
    * 确认绘制按钮
    */
   private enterPaintEndButton = PIXI.Sprite.from('assets/images/enterPaintButton.png');
-
   /**
    * 编辑点图片
    */
   editorPointTexture: PIXI.Texture = PIXI.Texture.from('assets/images/handle-main.png');
+  backgroundTexture: PIXI.Texture = PIXI.Texture.from('assets/images/noImg.png');
   /**
    * 框选工具图形
    */
@@ -888,15 +888,18 @@ export class WorkingAreaComponent extends EventEmitter implements OnInit, AfterV
    * 刷新背景图
    */
   public async refreshBackgroundImage(imageUrl: string, imageAngle: number): Promise<void> {
-    if (imageUrl === undefined || imageUrl === null || imageUrl === '') {
+    if (imageAngle === undefined || imageAngle === null) {
-      this.backgroundImage.visible = false;
+      imageAngle = 0;
-    } else {
+    }
-      this.backgroundImage.visible = false;
     this.backgroundImage.scale.set(1);
     this.backgroundImage.pivot.set(0);
     this.backgroundImage.x = this.app.view.width / 2;
     this.backgroundImage.y = this.app.view.height / 2;
+    if (imageUrl === undefined || imageUrl === null || imageUrl === '') {
+      this.backgroundImage.texture = this.backgroundTexture;
+    } else {
       this.backgroundImage.texture = await PIXI.Texture.fromURL(imageUrl);
+    }
     this.backgroundImage.angle = imageAngle;
     // 等待图片加载完成
     const imageWidth = this.backgroundImage.texture.width;
@@ -908,14 +911,13 @@ export class WorkingAreaComponent extends EventEmitter implements OnInit, AfterV
     const scale = wScale < hScale ? wScale : hScale;
     // 设置图片缩放
     this.backgroundImage.scale.set(scale);
-      this.backgroundImage.visible = true;
+    // this.backgroundImage.visible = true;
     this.backgroundImage.children.forEach((item) => {
       if (item instanceof AxShape) {
         item.refresh();
       }
     });
   }
-  }
   /**
    * 刷新
    * @param imageUrl