修复标注移动位置后撤销,文字丢失的问题

src/DatabaseServices/Dimension/AlignedDimension.ts

@@ -144,19 +144,27 @@ export class AlignedDimension extends Entity
         let arrow1 = new Mesh(BufferGeometryUtils.ArrowGeometry(), colorMaterial);
         let arrow2 = new Mesh(BufferGeometryUtils.ArrowGeometry(), colorMaterial);
 
+        this.RepairText();
+
+        obj.add(line, arrow1, arrow2, this._Text.DrawObject);
+
+        this.UpdateDrawObject(renderType, obj);
+
+        return obj;
+    }
+
     /**
     * 由于绘制的对象挂载在本实体下面,导致实体Clone后,在Dispose,可能把Text.Object给销毁了
     * 所以尝试还原它.
     */
+    private RepairText()
+    {
         let tObj = this._Text.DrawObject;
         if (tObj.children.length === 0)
+        {
+            this._Text.ClearDraw();
             tObj.add(this._Text.GetDrawObjectFromRenderType());
-
-        obj.add(line, arrow1, arrow2, this._Text.DrawObject);
-
-        this.UpdateDrawObject(renderType, obj);
-
-        return obj;
+        }
     }
 
     UpdateDrawObject(type: RenderType, obj: Object3D)
@@ -190,6 +198,8 @@ export class AlignedDimension extends Entity
         this._Text.TextString = FixedNotZero(this.m_ArmP1.distanceTo(this.m_ArmP2), 2);
         this._Text.Position = midPoint(this.m_ArmP1, this.m_ArmP2);
         this._Text.TextRotation = textRo;
+
+        this.RepairText();
     }
 
     GetObjectSnapPoints(