[C#/WINUI3/.NET8] ScalarKeyFrameAnimation 클래스 : Direction/IterationBehavior/Duration 속성 사용하기

■ ScalarKeyFrameAnimation 클래스의 Direction/IterationBehavior/Duration 속성을 사용하는 방법을 보여준다.

▶ 예제 코드 (C#)


using System;
using System.Numerics;

using Microsoft.UI;
using Microsoft.UI.Composition;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Hosting;

// ...

TextBlock textBlock;

// ...

Visual textBlockVisual = ElementCompositionPreview.GetElementVisual(textBlock);

Compositor compositor = textBlockVisual.Compositor;

PointLight pointLight = compositor.CreatePointLight();

pointLight.CoordinateSpace = textBlockVisual;
pointLight.Offset          = new Vector3(0, (float)this.textBlock.ActualHeight / 2, (float)this.textBlock.FontSize);
pointLight.Color           = Colors.White;

ScalarKeyFrameAnimation scalarKeyFrameAnimation = compositor.CreateScalarKeyFrameAnimation();

scalarKeyFrameAnimation.InsertKeyFrame(1, (float)textBlock.ActualWidth);

scalarKeyFrameAnimation.Direction         = AnimationDirection.Alternate;
scalarKeyFrameAnimation.IterationBehavior = AnimationIterationBehavior.Forever;
scalarKeyFrameAnimation.Duration          = TimeSpan.FromSeconds(2);

pointLight.StartAnimation("Offset.X", scalarKeyFrameAnimation);

using System;

using System.Numerics;

using Microsoft.UI;

using Microsoft.UI.Composition;

using Microsoft.UI.Xaml.Controls;

using Microsoft.UI.Xaml.Hosting;

// ...

TextBlock textBlock;

// ...

Visual textBlockVisual = ElementCompositionPreview.GetElementVisual(textBlock);

Compositor compositor = textBlockVisual.Compositor;

PointLight pointLight = compositor.CreatePointLight();

pointLight.CoordinateSpace = textBlockVisual;

pointLight.Offset = new Vector3(0, (float)this.textBlock.ActualHeight / 2, (float)this.textBlock.FontSize);

pointLight.Color = Colors.White;

ScalarKeyFrameAnimation scalarKeyFrameAnimation = compositor.CreateScalarKeyFrameAnimation();

scalarKeyFrameAnimation.InsertKeyFrame(1, (float)textBlock.ActualWidth);

scalarKeyFrameAnimation.Direction = AnimationDirection.Alternate;

scalarKeyFrameAnimation.IterationBehavior = AnimationIterationBehavior.Forever;

scalarKeyFrameAnimation.Duration = TimeSpan.FromSeconds(2);

pointLight.StartAnimation("Offset.X", scalarKeyFrameAnimation);