Class ExpressionAnimation

Namespace

Avalonia.Rendering.Composition.Animations

Assembly

Avalonia.Base.dll

A Composition Animation that uses a mathematical equation to calculate the value for an animating property every frame.

public sealed class ExpressionAnimation : CompositionAnimation, ICompositionAnimationBase

Inheritance

object

CompositionObject

CompositionAnimation

ExpressionAnimation

Implements

ICompositionAnimationBase

Inherited Members

CompositionAnimation.ClearAllParameters()

CompositionAnimation.ClearParameter(string)

CompositionAnimation.SetColorParameter(string, Color)

CompositionAnimation.SetMatrix3x2Parameter(string, Matrix3x2)

CompositionAnimation.SetMatrix4x4Parameter(string, Matrix4x4)

CompositionAnimation.SetQuaternionParameter(string, Quaternion)

CompositionAnimation.SetReferenceParameter(string, CompositionObject)

CompositionAnimation.SetScalarParameter(string, float)

CompositionAnimation.SetVector2Parameter(string, Vector2)

CompositionAnimation.SetVector3Parameter(string, Vector3)

CompositionAnimation.SetVector4Parameter(string, Vector4)

CompositionAnimation.Target

CompositionObject.StartAnimation(string, CompositionAnimation)

CompositionObject.StartAnimationGroup(ICompositionAnimationBase)

CompositionObject.ImplicitAnimations

CompositionObject.Compositor

CompositionObject.IsDisposed

object.GetType()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Remarks

The core of ExpressionAnimations allows a developer to define a mathematical equation that can be used to calculate the value of a targeted animating property each frame. This contrasts KeyFrameAnimations, which use an interpolator to define how the animating property changes over time. The mathematical equation can be defined using references to properties of Composition objects, mathematical functions and operators and Input. Use the StartAnimation(string, CompositionAnimation) method to start the animation.

Properties

Expression

The mathematical equation specifying how the animated value is calculated each frame. The Expression is the core of an ExpressionAnimation and represents the equation the system will use to calculate the value of the animation property each frame. The equation is set on this property in the form of a string. Although expressions can be defined by simple mathematical equations such as "2+2", the real power lies in creating mathematical relationships where the input values can change frame over frame.

public string? Expression { get; set; }

Property Value

string