use async loading for camera_manipulation sample

2025-04-16 18:06:09 +08:00
parent 429b8eb93b
commit ecffc5b62a
1 changed files with 103 additions and 0 deletions
--- a/examples/flutter/camera_manipulation/lib/main.dart
+++ b/examples/flutter/camera_manipulation/lib/main.dart
@@ -0,0 +1,103 @@
+import 'dart:async';
+import 'package:flutter/services.dart';
+import 'package:logging/logging.dart';
+import 'package:flutter/material.dart';
+import 'package:thermion_flutter/thermion_flutter.dart';
+
+void main() {
+  runApp(const MyApp());
+  Logger.root.onRecord.listen((record) {
+    print(record);
+  });
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Thermion Demo',
+      theme: ThemeData(
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        useMaterial3: true,
+      ),
+      home: const MyHomePage(title: 'Thermion Demo Home Page'),
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  const MyHomePage({super.key, required this.title});
+  final String title;
+
+  @override
+  State<MyHomePage> createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  
+  late DelegateInputHandler _fixedOrbitInputHandler;
+  late DelegateInputHandler _freeFlightInputHandler;
+  
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      _thermionViewer = await ThermionFlutterPlugin.createViewer();
+      var assetData = await rootBundle.load("assets/cube.glb");
+      var asset =
+          await _thermionViewer!.loadGltfFromBuffer(assetData.buffer.asUint8List(assetData.offsetInBytes), keepData: true, loadResourcesAsync: true);
+      await _thermionViewer!.loadSkybox("assets/default_env_skybox.ktx");
+      await _thermionViewer!.loadIbl("assets/default_env_ibl.ktx");
+      await _thermionViewer!.setPostProcessing(true);
+      await _thermionViewer!.setRendering(true);
+
+      _fixedOrbitInputHandler =
+          DelegateInputHandler.fixedOrbit(_thermionViewer!)
+            ..setActionForType(InputType.MMB_HOLD_AND_MOVE, InputAction.ROTATE)
+            ..setActionForType(InputType.SCALE1, InputAction.ROTATE)
+            ..setActionForType(InputType.SCALE2, InputAction.ZOOM)
+            ..setActionForType(InputType.SCROLLWHEEL, InputAction.ZOOM);
+
+      _freeFlightInputHandler =
+          DelegateInputHandler.flight(_thermionViewer!)
+            ..setActionForType(InputType.MMB_HOLD_AND_MOVE, InputAction.ROTATE)
+            ..setActionForType(InputType.SCALE1, InputAction.ROTATE)
+            ..setActionForType(InputType.SCALE2, InputAction.ZOOM)
+            ..setActionForType(InputType.SCROLLWHEEL, InputAction.ZOOM);
+
+      setState(() {});
+    });
+  }
+
+  ThermionViewer? _thermionViewer;
+
+  bool isOrbit = true;
+
+  @override
+  Widget build(BuildContext context) {
+    return Stack(children: [
+      if (_thermionViewer != null) ...[
+        Positioned.fill(
+            child: ThermionListenerWidget(
+                inputHandler: isOrbit
+                    ? _fixedOrbitInputHandler : _freeFlightInputHandler,
+                    child:ThermionWidget(
+                        viewer: _thermionViewer!,
+                      ))),
+        Column(
+          mainAxisAlignment: MainAxisAlignment.end,
+          children: [
+            ElevatedButton(
+                onPressed: () {
+                  isOrbit = !isOrbit;
+                  setState(() {});
+                },
+                child: Text("Switch to ${isOrbit ? "Free Flight" : "Orbit"}"))
+          ],
+        )
+      ],
+    ]);
+  }
+}