init

2025-08-22 15:13:34 +08:00
parent 961b2ae1ee
commit 1c07d576d3
44 changed files with 8049 additions and 16 deletions
--- a/examples/flutter/animations/lib/model_viewer.dart
+++ b/examples/flutter/animations/lib/model_viewer.dart
@@ -0,0 +1,172 @@
+import 'dart:io';
+
+import 'package:animations/utils/binary_manager.dart';
+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 LocalModelViewer extends StatefulWidget {
+  @override
+  _LocalModelViewerState createState() => _LocalModelViewerState();
+}
+
+class _LocalModelViewerState extends State<LocalModelViewer> {
+  ThermionViewer? _viewer;
+  ThermionAsset? _asset;
+  bool _isLoading = true;
+  bool _hasError = false;
+  String _statusMessage = "初始化中...";
+
+  @override
+  void initState() {
+    super.initState();
+
+    _initializeViewerAndLoadModel();
+  }
+
+  Future<void> _initializeViewerAndLoadModel() async {
+    try {
+      // 获取应用支持目录并构建模型文件路径
+      final supportDir = await getApplicationSupportDirectory();
+      final modelFile = File(p.join(supportDir.path, 'cup', 'model.gltf'));
+
+      // 检查文件是否存在
+      if (!await modelFile.exists()) {
+        await BinaryManager.migrate3DModels();
+        await Future.delayed(const Duration(milliseconds: 3000));
+
+        // throw Exception("模型文件不存在于路径: ${modelFile.path}");
+      }
+      setState(() {
+        _statusMessage = "创建3D查看器...";
+      });
+
+      // 创建ThermionViewer实例
+      _viewer = await ThermionFlutterPlugin.createViewer();
+
+      setState(() {
+        _statusMessage = "获取模型路径...";
+      });
+
+      setState(() {
+        _statusMessage = "加载环境光和天空盒...";
+      });
+
+      // 加载环境光和天空盒（确保在pubspec.yaml中注册）
+      await _viewer!.loadSkybox("assets/default_env_skybox.ktx");
+      await _viewer!.loadIbl("assets/default_env_ibl.ktx");
+
+      setState(() {
+        _statusMessage = "加载3D模型...";
+      });
+
+      // 加载glTF模型 - 使用文件URI格式
+      _asset = await _viewer!.loadGltf("file://${modelFile.path}");
+
+      // 可选：将模型缩放到单位立方体
+      await _asset!.transformToUnitCube();
+
+      // 配置场景
+      final camera = await _viewer!.getActiveCamera();
+      await camera.lookAt(Vector3(0, 0, 6));
+
+      // 开始渲染
+      await _viewer!.setRendering(true);
+
+      setState(() {
+        _isLoading = false;
+        _hasError = false;
+        _statusMessage = "加载完成";
+      });
+    } catch (e) {
+      print("加载模型失败: $e");
+      setState(() {
+        _isLoading = false;
+        _hasError = true;
+        _statusMessage = "加载失败: $e";
+      });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_isLoading) {
+      return Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            CircularProgressIndicator(),
+            SizedBox(height: 16),
+            Text(_statusMessage),
+          ],
+        ),
+      );
+    }
+
+    if (_hasError || _viewer == null) {
+      return Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Icon(Icons.error_outline, color: Colors.red, size: 48),
+            SizedBox(height: 16),
+            Text("加载3D模型失败"),
+            Text(_statusMessage, style: TextStyle(color: Colors.red)),
+            SizedBox(height: 16),
+            ElevatedButton(
+              onPressed: _initializeViewerAndLoadModel,
+              child: Text("重试"),
+            ),
+          ],
+        ),
+      );
+    }
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('本地模型查看'),
+      ),
+      body: ThermionListenerWidget(
+        inputHandler: DelegateInputHandler.fixedOrbit(_viewer!),
+        child: ThermionWidget(
+          viewer: _viewer!,
+          showFpsCounter: true, // 可选：显示FPS计数器
+        ),
+      ),
+    );
+
+    // 使用ThermionWidget显示3D内容
+    return ThermionListenerWidget(
+      inputHandler: DelegateInputHandler.fixedOrbit(_viewer!),
+      child: ThermionWidget(
+        viewer: _viewer!,
+        showFpsCounter: true, // 可选：显示FPS计数器
+      ),
+    );
+  }
+
+  Future<void> deleteModelFile() async {
+    // 获取应用支持目录
+    final supportDir = await getApplicationSupportDirectory();
+
+    // 构建 model.gltf 的完整路径
+    final modelFile = File(p.join(supportDir.path, 'cup', 'model.gltf'));
+
+    // 检查文件是否存在，然后删除
+    if (await modelFile.exists()) {
+      await modelFile.delete();
+      print('model.gltf 已删除');
+    } else {
+      print('model.gltf 文件不存在');
+    }
+  }
+
+  @override
+  void dispose() {
+    deleteModelFile();
+    // 清理资源
+    _viewer?.dispose();
+    super.dispose();
+  }
+}