Spring class
A persistent spring animation that is based on response and damping fraction.
Mostly adapted from
fluid_animations.
- Inheritance
-
- Object
- SpringDescription
- Spring
- Annotations
Constructors
- Spring.new({double durationSeconds = _defaultDurationSeconds, double bounce = 0})
-
Creates a spring with the specified duration and bounce.
const
- Spring.withDamping({double dampingFraction = 1.0, double durationSeconds = _defaultDurationSeconds})
-
Creates a persistent spring that is based on duration
and damping fraction.
const
Properties
- bounce → double
-
How bouncy the spring should be.
final
- damping → double
-
The damping coefficient (c).
finalinherited
- dampingFraction → double
-
The amount of drag applied to the value being
animated, as a fraction of an estimate of amount needed to produce
critical damping.
no setter
- durationSeconds → double
-
Defines the pace of the spring.
final
- hashCode → int
-
The hash code for this object.
no setteroverride
- mass → double
-
The mass of the spring (m).
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- stiffness → double
-
The spring constant (k).
finalinherited
Methods
-
copyWith(
{double? bounce, double? durationSeconds}) → Spring - Creates a new Spring with the specified properties.
-
copyWithDamping(
{double? dampingFraction, double? durationSeconds}) → Spring - Creates a new Spring with the specified properties.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override
Constants
- bouncy → const Spring
- A spring with a predefined duration and higher amount of bounce.
- defaultIOS → const Spring
- A smooth spring with no bounce.
- instant → const Spring
- An effectively instant spring.
- interactive → const Spring
- A spring animation with a lower response value, intended for driving interactive animations.
- snappy → const Spring
- A spring with a predefined response and small amount of bounce that feels more snappy.