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Trivial code changes for style in animation/ directory.

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This commit is contained in:
Hixie 2015-08-17 12:34:31 -07:00
parent 788e4731fe
commit 08282362dc
2 changed files with 21 additions and 14 deletions
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6
sky/packages/sky/lib/animation/animated_simulation.dart
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@ -33,11 +33,11 @@ class Ticker {
_animationId = null;
}
// We take the _completer into a local variable so that !isTicking
// when we actually complete the future (isTicking uses _completer
// to determine its state).
Completer localCompleter = _completer;
_completer = null;
// We take the _completer into a local variable so that !isTicking when we
// actually complete the future.
assert(!isTicking);
localCompleter.complete();
}

29
sky/packages/sky/lib/animation/forces.dart
View File

@ -10,27 +10,34 @@ abstract class Force {
}
class SpringForce extends Force {
SpringForce(this.spring, {this.left: 0.0, this.right: 1.0});
// We overshoot the target by this distance, but stop the simulation when
// the spring gets within this distance (regardless of how fast it's moving).
// This causes the spring to settle a bit faster than it otherwise would.
static final Tolerance tolerance =
new Tolerance(velocity: double.INFINITY, distance: 0.01);
SpringForce(this.spring, { this.left: 0.0, this.right: 1.0 });
final SpringDescription spring;
// Where to put the spring's resting point when releasing left or right,
// respectively.
final double left, right;
// We overshoot the target by this distance, but stop the simulation when
// the spring gets within this distance (regardless of how fast it's moving).
// This causes the spring to settle a bit faster than it otherwise would.
static final Tolerance tolerance = new Tolerance(
velocity: double.INFINITY,
distance: 0.01
);
Simulation release(double position, double velocity) {
double target = velocity < 0.0 ?
this.left - tolerance.distance : this.right + tolerance.distance;
double target = velocity < 0.0 ? this.left - tolerance.distance
: this.right + tolerance.distance;
return new SpringSimulation(spring, position, target, velocity)
..tolerance = tolerance;
}
}
final SpringDescription _kDefaultSpringDesc =
new SpringDescription.withDampingRatio(mass: 1.0, springConstant: 500.0, ratio: 1.0);
final SpringDescription _kDefaultSpringDesc = new SpringDescription.withDampingRatio(
mass: 1.0,
springConstant: 500.0,
ratio: 1.0
);
final SpringForce kDefaultSpringForce = new SpringForce(_kDefaultSpringDesc);