implicit-casts:false in flutter/lib/src/animation (#45501)

packages/flutter/lib/src/animation/animation.dart

@@ -167,7 +167,7 @@ abstract class Animation<T> extends Listenable implements ValueListenable<T> {
   @optionalTypeArgs
   Animation<U> drive<U>(Animatable<U> child) {
     assert(this is Animation<double>);
-    return child.animate(this as dynamic); // TODO(ianh): Clean this once https://github.com/dart-lang/sdk/issues/32120 is fixed.
+    return child.animate(this as Animation<double>);
   }
 
   @override

packages/flutter/lib/src/animation/animation_controller.dart

@@ -392,7 +392,7 @@ class AnimationController extends Animation<double>
   }
 
   void _internalSetValue(double newValue) {
-    _value = newValue.clamp(lowerBound, upperBound);
+    _value = newValue.clamp(lowerBound, upperBound) as double;
     if (_value == lowerBound) {
       _status = AnimationStatus.dismissed;
     } else if (_value == upperBound) {
@@ -576,7 +576,7 @@ class AnimationController extends Animation<double>
     stop();
     if (simulationDuration == Duration.zero) {
       if (value != target) {
-        _value = target.clamp(lowerBound, upperBound);
+        _value = target.clamp(lowerBound, upperBound) as double;
         notifyListeners();
       }
       _status = (_direction == _AnimationDirection.forward) ?
@@ -701,7 +701,7 @@ class AnimationController extends Animation<double>
     assert(!isAnimating);
     _simulation = simulation;
     _lastElapsedDuration = Duration.zero;
-    _value = simulation.x(0.0).clamp(lowerBound, upperBound);
+    _value = simulation.x(0.0).clamp(lowerBound, upperBound) as double;
     final TickerFuture result = _ticker.start();
     _status = (_direction == _AnimationDirection.forward) ?
       AnimationStatus.forward :
@@ -778,7 +778,7 @@ class AnimationController extends Animation<double>
     _lastElapsedDuration = elapsed;
     final double elapsedInSeconds = elapsed.inMicroseconds.toDouble() / Duration.microsecondsPerSecond;
     assert(elapsedInSeconds >= 0.0);
-    _value = _simulation.x(elapsedInSeconds).clamp(lowerBound, upperBound);
+    _value = _simulation.x(elapsedInSeconds).clamp(lowerBound, upperBound) as double;
     if (_simulation.isDone(elapsedInSeconds)) {
       _status = (_direction == _AnimationDirection.forward) ?
         AnimationStatus.completed :
@@ -813,7 +813,7 @@ class _InterpolationSimulation extends Simulation {
 
   @override
   double x(double timeInSeconds) {
-    final double t = (timeInSeconds / _durationInSeconds).clamp(0.0, 1.0);
+    final double t = (timeInSeconds / _durationInSeconds).clamp(0.0, 1.0) as double;
     if (t == 0.0)
       return _begin;
     else if (t == 1.0)

packages/flutter/lib/src/animation/curves.dart

@@ -149,7 +149,7 @@ class Interval extends Curve {
     assert(end >= 0.0);
     assert(end <= 1.0);
     assert(end >= begin);
-    t = ((t - begin) / (end - begin)).clamp(0.0, 1.0);
+    t = ((t - begin) / (end - begin)).clamp(0.0, 1.0) as double;
     if (t == 0.0 || t == 1.0)
       return t;
     return curve.transform(t);
@@ -400,7 +400,7 @@ class ElasticInCurve extends Curve {
   double transformInternal(double t) {
     final double s = period / 4.0;
     t = t - 1.0;
-    return -math.pow(2.0, 10.0 * t) * math.sin((t - s) * (math.pi * 2.0) / period);
+    return -math.pow(2.0, 10.0 * t) * math.sin((t - s) * (math.pi * 2.0) / period) as double;
   }
 
   @override
@@ -427,7 +427,7 @@ class ElasticOutCurve extends Curve {
   @override
   double transformInternal(double t) {
     final double s = period / 4.0;
-    return math.pow(2.0, -10 * t) * math.sin((t - s) * (math.pi * 2.0) / period) + 1.0;
+    return math.pow(2.0, -10 * t) * math.sin((t - s) * (math.pi * 2.0) / period) + 1.0 as double;
   }
 
   @override
@@ -459,7 +459,7 @@ class ElasticInOutCurve extends Curve {
     if (t < 0.0)
       return -0.5 * math.pow(2.0, 10.0 * t) * math.sin((t - s) * (math.pi * 2.0) / period);
     else
-      return math.pow(2.0, -10.0 * t) * math.sin((t - s) * (math.pi * 2.0) / period) * 0.5 + 1.0;
+      return math.pow(2.0, -10.0 * t) * math.sin((t - s) * (math.pi * 2.0) / period) * 0.5 + 1.0 as double;
   }
 
   @override

packages/flutter/lib/src/animation/tween.dart

@@ -236,7 +236,7 @@ class Tween<T extends dynamic> extends Animatable<T> {
   T lerp(double t) {
     assert(begin != null);
     assert(end != null);
-    return begin + (end - begin) * t;
+    return begin + (end - begin) * t as T;
   }
 
   /// Returns the interpolated value for the current value of the given animation.