我們要先到Assets建立AR的資源才可以繼續，直接拉圖片進入Assets是不行的歐

sceneView.delegate = self
guard let referenceImages = ARReferenceImage.referenceImages(inGroupNamed: "ARImages", bundle: nil) else {
            fatalError("無法加載參考圖像。")
        }
        
        let configuration = ARImageTrackingConfiguration()
        configuration.trackingImages = referenceImages
        configuration.maximumNumberOfTrackedImages = 1  // 設置同時可追蹤的最大圖像數
        
        sceneView.session.run(configuration)
        
        
        // ARSCNViewDelegate
        func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
        if let imageAnchor = anchor as? ARImageAnchor {
            let referenceImage = imageAnchor.referenceImage

            // 在這裡增加虛擬內容，例如 3D 物件或 2D 視圖
            let plane = SCNPlane(width: referenceImage.physicalSize.width, height: referenceImage.physicalSize.height)
            let planeNode = SCNNode(geometry: plane)
            planeNode.eulerAngles.x = -.pi / 2
            node.addChildNode(planeNode)
            
            // 給平面添加材質
            plane.firstMaterial?.diffuse.contents = UIColor.red.withAlphaComponent(0.5)
        }
    }