Run dart fix in lib

lib/animations/animation_builder.dart

@@ -25,8 +25,9 @@ class AnimationBuilder {
   }
 
   MorphAnimationData build() {
-    if (availableMorphs.isEmpty == 0 || _duration == 0 || _frameLengthInMs == 0)
+    if (availableMorphs.isEmpty || _duration == 0 || _frameLengthInMs == 0) {
       throw Exception();
+    }
 
     int numFrames = _duration * 1000 ~/ _frameLengthInMs;
 
@@ -64,10 +65,10 @@ class AnimationBuilder {
 
   AnimationBuilder interpolateMorphWeights(
       double start, double end, double startValue, double endValue) {
-    this._interpMorphStart = start;
-    this._interpMorphEnd = end;
-    this._interpMorphStartValue = startValue;
-    this._interpMorphEndValue = endValue;
+    _interpMorphStart = start;
+    _interpMorphEnd = end;
+    _interpMorphStartValue = startValue;
+    _interpMorphEndValue = endValue;
     return this;
   }
 

lib/filament_controller_ffi.dart

@@ -1,7 +1,6 @@
 import 'dart:async';
 import 'dart:ffi';
 import 'dart:io';
-import 'dart:typed_data';
 import 'dart:ui' as ui;
 import 'package:flutter/services.dart';
 import 'package:ffi/ffi.dart';
@@ -69,7 +68,7 @@ class FilamentControllerFFI extends FilamentController {
       _resizingWidth = call.arguments[0];
       _resizingHeight = call.arguments[1];
       _resizeTimer = Timer(const Duration(milliseconds: 500), () async {
-        this.rect.value = Offset.zero &
+        rect.value = Offset.zero &
             ui.Size(_resizingWidth!.toDouble(), _resizingHeight!.toDouble());
         await resize();
       });
@@ -215,7 +214,7 @@ class FilamentControllerFFI extends FilamentController {
     }
 
     textureDetails.value = TextureDetails(
-        textureId: renderingSurface.flutterTextureId!,
+        textureId: renderingSurface.flutterTextureId,
         width: rect.value!.width.toInt(),
         height: rect.value!.height.toInt());
     print("texture details ${textureDetails.value}");
@@ -352,7 +351,7 @@ class FilamentControllerFFI extends FilamentController {
     }
 
     textureDetails.value = TextureDetails(
-        textureId: renderingSurface.flutterTextureId!,
+        textureId: renderingSurface.flutterTextureId,
         width: rect.value!.width.toInt(),
         height: rect.value!.height.toInt());
 
@@ -644,7 +643,7 @@ class FilamentControllerFFI extends FilamentController {
         calloc.free(dataPtr);
         calloc.free(idxPtr);
         throw Exception(
-            "Morph target ${animation.morphTargets[i]} is specified in the animation but could not be found in the mesh ${animation.meshName} under entity ${entity}");
+            "Morph target ${animation.morphTargets[i]} is specified in the animation but could not be found in the mesh ${animation.meshName} under entity $entity");
       }
       idxPtr.elementAt(i).value = index;
     }
@@ -776,7 +775,7 @@ class FilamentControllerFFI extends FilamentController {
       throw Exception("No viewer available, ignoring");
     }
     var result = _lib.set_camera(
-        _viewer!, asset, name?.toNativeUtf8()?.cast<Char>() ?? nullptr);
+        _viewer!, asset, name?.toNativeUtf8().cast<Char>() ?? nullptr);
     if (!result) {
       throw Exception("Failed to set camera");
     }

lib/widgets/filament_gesture_detector.dart

@@ -1,8 +1,6 @@
-import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/foundation.dart';
-import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_filament/widgets/filament_gesture_detector_desktop.dart';
 import 'package:flutter_filament/widgets/filament_gesture_detector_mobile.dart';

lib/widgets/filament_gesture_detector_desktop.dart

@@ -49,7 +49,7 @@ class _FilamentGestureDetectorDesktopState
   ///
   ///
   ///
-  bool _scaling = false;
+  final bool _scaling = false;
 
   bool _pointerMoving = false;
 
@@ -78,7 +78,7 @@ class _FilamentGestureDetectorDesktopState
 
     // we don't want to end the zoom in the same frame, because this will destroy the camera manipulator (and cancel the zoom update).
     // here, we just defer calling [zoomEnd] for 100ms to ensure the update is propagated through.
-    _scrollTimer = Timer(Duration(milliseconds: 100), () async {
+    _scrollTimer = Timer(const Duration(milliseconds: 100), () async {
       await widget.controller.zoomEnd();
     });
   }

lib/widgets/filament_widget.dart

@@ -110,8 +110,7 @@ class _SizedFilamentWidget extends StatefulWidget {
   final FilamentController controller;
 
   const _SizedFilamentWidget(
-      {super.key,
-      required this.width,
+      {required this.width,
       required this.height,
       this.initial,
       required this.controller});