rename camera_manipulation sample to picking

examples/flutter/camera_manipulation/lib/main.dart

@@ -1,101 +0,0 @@
-import 'dart:async';
-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 entity =
-          await _thermionViewer!.loadGltf("assets/cube.glb", keepData: 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"}"))
-          ],
-        )
-      ],
-    ]);
-  }
-}

examples/flutter/picking/lib/main.dart

@@ -0,0 +1,190 @@
+import 'dart:async';
+import 'package:logging/logging.dart';
+import 'package:flutter/material.dart' hide View;
+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 _inputHandler;
+
+  String? overlay;
+  final vectors = <Vector2>[];
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      _thermionViewer = await ThermionFlutterPlugin.createViewer();
+      var asset = await _thermionViewer!
+          .loadGltf("assets/cube.glb", keepData: true, numInstances: 4);
+      var instances = <ThermionAsset>[
+        await asset.getInstance(0),
+        await asset.createInstance(),
+        await asset.createInstance(),
+        await asset.createInstance()
+      ];
+
+      var vectors = <Vector2>[
+        Vector2(1, 1),
+        Vector2(1, -1),
+        Vector2(-1, 1),
+        Vector2(-1, -1),
+      ];
+
+      final speed = 0.03;
+
+      FilamentApp.instance!.registerRequestFrameHook(() async {
+        for (int i = 0; i < instances.length; i++) {
+          final instance = instances[i];
+          final vector = vectors[i];
+          var transform = await instance.getWorldTransform();
+          var translation = transform.getTranslation();
+          var delta = vector.scaled(speed)
+            ..clamp(Vector2(-1, -1), Vector2(1, 1));
+          translation.x += delta.x;
+          translation.y += delta.y;
+          if (translation.x.abs() >= 3) {
+            vectors[i].x *= -1;
+          }
+          if (translation.y.abs() >= 3) {
+            vectors[i].y *= -1;
+          }
+          transform.setTranslation(translation);
+          await instance.setTransform(transform);
+        }
+      });
+
+      final camera = await _thermionViewer!.getActiveCamera();
+      await camera.lookAt(Vector3(0, 0, 10));
+
+      await _thermionViewer!.loadSkybox("assets/default_env_skybox.ktx");
+      await _thermionViewer!.loadIbl("assets/default_env_ibl.ktx");
+      await _thermionViewer!.setPostProcessing(true);
+      await _thermionViewer!.setRendering(true);
+
+      var delegate = _InputHandlerDelegate(_thermionViewer!.view,
+          (ThermionEntity entity, int x, int y) async {
+        for (int i = 0; i < instances.length; i++) {
+          var instance = instances[i];
+          var children = await instance.getChildEntities();
+          if (entity == instance.entity || children.contains(entity)) {
+            overlay = "Instance ${i} selected at viewport coordinates ($x, $y)";
+            setState(() {
+              
+            });
+          } else {
+            setState(() {
+              
+            });
+          }
+        }
+      });
+      _inputHandler =
+          DelegateInputHandler(viewer: _thermionViewer!, delegates: [delegate]);
+
+      setState(() {});
+    });
+  }
+
+  ThermionViewer? _thermionViewer;
+
+  bool isOrbit = true;
+
+  @override
+  Widget build(BuildContext context) {
+    if (_thermionViewer == null) {
+      return Container();
+    }
+    return Stack(children: [
+      Positioned.fill(
+          child: ThermionListenerWidget(
+              inputHandler: _inputHandler,
+              child: ThermionWidget(
+                viewer: _thermionViewer!,
+              ))),
+      if (overlay != null)
+        Align(
+            alignment: Alignment.bottomCenter,
+            child: Container(
+                padding: const EdgeInsets.all(5),
+                margin: const EdgeInsets.all(5),
+                color: Colors.black,
+                child: Text(
+                  overlay!,
+                  style: const TextStyle(color: Colors.white, fontSize: 12),
+                )))
+    ]);
+  }
+}
+
+class _InputHandlerDelegate extends InputHandlerDelegate {
+  final View view;
+  final void Function(ThermionEntity, int x, int y) onPick;
+
+  _InputHandlerDelegate(this.view, this.onPick);
+
+  void _onPickResult(PickResult result) {
+    onPick.call(result.entity, result.x, result.y);
+  }
+
+  @override
+  Future handle(List<InputEvent> events) async {
+    for (final event in events) {
+      switch (event) {
+        case TouchEvent(
+            type: final type,
+            localPosition: final localPosition,
+            delta: final delta
+          ):
+          await view.pick(localPosition!.x.toInt(), localPosition!.y.toInt(),
+              _onPickResult);
+          break;
+        case MouseEvent(
+            type: final type,
+            localPosition: final localPosition,
+            delta: final delta
+          ):
+          switch (type) {
+            case MouseEventType.buttonDown:
+              await view.pick(localPosition!.x.toInt(),
+                  localPosition!.y.toInt(), _onPickResult);
+            default:
+              break;
+          }
+          break;
+        default:
+          break;
+      }
+    }
+  }
+}

examples/flutter/picking/macos/Podfile.lock

@@ -14,7 +14,7 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/thermion_flutter/macos
 
 SPEC CHECKSUMS:
-  FlutterMacOS: 8f6f14fa908a6fb3fba0cd85dbd81ec4b251fb24
+  FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
   thermion_flutter: debb51a861788780ce40e11e4400c2e5a8681fdf
 
 PODFILE CHECKSUM: 1888651be91a8ad58692c1add9ce24279fd4e950

examples/flutter/picking/macos/Runner.xcodeproj/project.pbxproj

@@ -556,7 +556,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.14;
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -639,7 +639,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.14;
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -689,7 +689,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.14;
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;