CompositionAnimation.SetExpressionReferenceParameter Metodo

Definizione

Spazio dei nomi:

Windows.UI.Composition

Imposta un oggetto che implementa IAnimationObject come parametro di riferimento in un oggetto ExpressionAnimation.

public:
 virtual void SetExpressionReferenceParameter(Platform::String ^ parameterName, IAnimationObject ^ source) = SetExpressionReferenceParameter;

void SetExpressionReferenceParameter(winrt::hstring const& parameterName, IAnimationObject const& source);

public void SetExpressionReferenceParameter(string parameterName, IAnimationObject source);

function setExpressionReferenceParameter(parameterName, source)

Public Sub SetExpressionReferenceParameter (parameterName As String, source As IAnimationObject)

Parametri

parameterName

String

Platform::String

winrt::hstring

Nome del parametro da impostare.

source

IAnimationObject

Oggetto di origine.

Requisiti Windows

Famiglia di dispositivi	Windows 10, version 1809 (è stato introdotto in 10.0.17763.0)
API contract	Windows.Foundation.UniversalApiContract (è stato introdotto in v7.0)

Esempio

// CustomObject that implements IAnimationObject.
class CustomObject : IAnimationObject
{
    public CustomObject(Compositor compositor)
    {
        _targetVisual = compositor.CreateSpriteVisual();
    }

    // Implement PopulatePropertyInfo method that 
    // redirects the property named "CustomOffset"
    // to the Offset property of the underlying visual.
    void IAnimationObject.PopulatePropertyInfo(
        string propertyName,
        AnimationPropertyInfo propertyInfo)
    {
        if (propertyName.Equals(“CustomOffset”)
        {
            _targetVisual.PopulatePropertyInfo(
                “Offset”,
                propertyInfo);           
        }
    }

    private SpriteVisual _targetVisual = null;
}

// Sample usage of CustomObject in an ExpressionAnimation.
void SetupExpression(
    Compositor compositor, 
    IAnimationObject customObject,
    SpriteVisual target)
{
    var expAnim = compositor.CreateExpressionAnimation(
        “customObject.CustomOffset + vector3(100.0f, 0.0f, 0.0f)”);

    expAnim.SetExpressionReferenceParameter(“customObject”, customObject);

    targetVisual.StartAnimation(“Offset”, expAnim);        
}