fix:3的模型动态修改模型文件

examples/flutter/animations/lib/cup_page.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:path/path.dart' as p;
 import 'package:path_provider/path_provider.dart';
 import 'package:thermion_flutter/thermion_flutter.dart';
+// import 'package:thermion_dart/src/viewer/src/thermion_viewer_base.dart';
 
 class CupPage1 extends StatelessWidget {
   const CupPage1({super.key});
@@ -42,7 +43,7 @@ class CupPage extends StatefulWidget {
 
 class _CupPageState extends State<CupPage> {
   bool _isLoading = true;
-  String? _modelPath;
+  String? _modelPath, modelUri;
   String _statusMessage = "正在加载本地模型...";
 
   @override
@@ -61,9 +62,17 @@ class _CupPageState extends State<CupPage> {
       final supportDir = await getApplicationSupportDirectory();
       final modelFile = File(p.join(supportDir.path, 'cup', 'model.gltf'));
 
+      String modelPath =
+          File(p.join(supportDir.path, 'cup', 'model.gltf')).absolute.path;
+      final cupDir = Directory('${supportDir.path}/cup');
+      final modelUri = File('${cupDir.path}/model.gltf').uri;
+      print('加载本地模modelPath: $modelPath');
+      print('加载本地模modelUri: $modelUri');
+
       if (await modelFile.exists()) {
         setState(() {
-          _modelPath = modelFile.path;
+          _modelPath = modelPath;
+
           _isLoading = false;
           _statusMessage = "本地模型加载完成";
         });
@@ -117,6 +126,7 @@ class _CupPageState extends State<CupPage> {
                 )
               : ViewerWidget(
                   assetPath: "file://$_modelPath",
+                  // assetPath: modelUri,
                   skyboxPath: "assets/default_env_skybox.ktx",
                   iblPath: "assets/default_env_ibl.ktx",
                   transformToUnitCube: true,