fix:3的模型动态修改模型文件

2025-08-25 15:09:07 +08:00
parent 1c07d576d3
commit d16474784d
8 changed files with 346 additions and 121 deletions
--- a/examples/flutter/animations/lib/cup.dart
+++ b/examples/flutter/animations/lib/cup.dart
@@ -0,0 +1,114 @@
+import 'dart:io';
+
+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';
+
+class Cup extends StatefulWidget {
+  const Cup({super.key});
+
+  @override
+  State<Cup> createState() => _CupState();
+}
+
+class _CupState extends State<Cup> {
+  bool _isLoading = true;
+  String? _modelPath, _modelUri;
+  String _statusMessage = "正在加载本地模型...";
+
+  @override
+  void initState() {
+    super.initState();
+    _loadLocalModel();
+  }
+
+  // 从应用支持目录加载模型
+  Future<void> _loadLocalModel() async {
+    try {
+      setState(() {
+        _statusMessage = "获取本地模型路径...";
+      });
+
+      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.toString();
+      print('加载本地模modelPath: $modelPath');
+      print('加载本地模modelUri: $modelUri');
+
+      if (await modelFile.exists()) {
+        setState(() {
+          _modelPath = modelPath;
+          _modelUri = modelUri;
+
+          _isLoading = false;
+          _statusMessage = "本地模型加载完成";
+        });
+      } else {
+        setState(() {
+          _isLoading = false;
+          _statusMessage = "本地模型文件不存在";
+        });
+      }
+    } catch (e) {
+      print('加载本地模型失败: $e');
+      setState(() {
+        _isLoading = false;
+        _statusMessage = "加载失败: $e";
+      });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('本地模型查看'),
+      ),
+      body: _isLoading
+          ? Center(
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  const CircularProgressIndicator(),
+                  const SizedBox(height: 16),
+                  Text(_statusMessage),
+                ],
+              ),
+            )
+          : _modelPath == null
+              ? Center(
+                  child: Column(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: [
+                      const Icon(Icons.error, size: 48, color: Colors.red),
+                      const SizedBox(height: 16),
+                      Text(_statusMessage),
+                      const SizedBox(height: 16),
+                      ElevatedButton(
+                        onPressed: _loadLocalModel,
+                        child: const Text('重试'),
+                      ),
+                    ],
+                  ),
+                )
+              : ViewerWidget(
+                  // assetPath: "file://$_modelPath",
+                  assetPath: _modelUri,
+                  skyboxPath: "assets/default_env_skybox.ktx",
+                  iblPath: "assets/default_env_ibl.ktx",
+                  transformToUnitCube: true,
+                  initialCameraPosition: Vector3(0, 0, 6),
+                  background: Colors.grey[200],
+                  manipulatorType: ManipulatorType.ORBIT,
+                  initial: const Center(
+                    child: CircularProgressIndicator(),
+                  ),
+                ),
+    );
+  }
+}