[C#/WINUI3/.NET8] 애플리케이션 로드시 이미지 애니메이션 만들기

■ 애플리케이션 로드시 이미지 애니메이션을 만드는 방법을 보여준다.

※ 비주얼 스튜디오에서 TestProject(Unpackaged) 모드로 빌드한다.
※ TestProject.csproj 프로젝트 파일에서 WindowsPackageType 태그를 None으로 추가했다.

▶ MainPage.xaml


<Page x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Grid>
        <Image Name="image"
            Width="100"
            Height="75"
            Stretch="Uniform" />
    </Grid>
</Page>

<Page x:Class="TestProject.MainPage"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"

FontFamily="나눔고딕코딩"

FontSize="16">

<Grid>

<Image Name="image"

Width="100"

Height="75"

Stretch="Uniform" />

</Grid>

</Page>

▶ MainPage.xaml


using System;
using System.Numerics;

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

namespace TestProject;

/// <summary>
/// 메인 페이지
/// </summary>
public sealed partial class MainPage : Page
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 생성자 - MainPage()

    /// <summary>
    /// 생성자
    /// </summary>
    public MainPage()
    {
        InitializeComponent();

        Loaded += Page_Loaded;
    }

    #endregion

    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Private

    #region 페이지 로드시 처리하기 - Page_Loaded(sender, e)

    /// <summary>
    /// 페이지 로드시 처리하기
    /// </summary>
    /// <param name="sender">이벤트 발생자</param>
    /// <param name="e">이벤트 인자</param>
    private void Page_Loaded(object sender, RoutedEventArgs e)
    {
        BitmapImage bitmapImage = new BitmapImage(new Uri("ms-appx:///Assets/landscape.png"));

        bitmapImage.DecodePixelWidth  = 800;
        bitmapImage.DecodePixelHeight = 600;

        this.image.Source = bitmapImage;

        Visual imageVisual = ElementCompositionPreview.GetElementVisual(this.image);

        Compositor compositor = imageVisual.Compositor;

        Vector3 centerPointVector3 = new Vector3((float)this.image.Width / 2, (float)this.image.Height / 2, 0f);

        imageVisual.Scale       = new Vector3(1, 1, 1);
        imageVisual.Opacity     = 0f;
        imageVisual.CenterPoint = centerPointVector3;

        Vector3KeyFrameAnimation scaleAnimation = compositor.CreateVector3KeyFrameAnimation();

        scaleAnimation.InsertKeyFrame(0f, new Vector3(1, 1, 1));

        CubicBezierEasingFunction scaleCubicBezierEasingFunction = compositor.CreateCubicBezierEasingFunction
        (
            new Vector2(0.1f, 0.9f),
            new Vector2(0.2f, 1f  )
        );

        scaleAnimation.InsertKeyFrame(1f, new Vector3(6, 6, 1), scaleCubicBezierEasingFunction);

        scaleAnimation.Duration = TimeSpan.FromSeconds(2);

        ScalarKeyFrameAnimation opacityAnimation = compositor.CreateScalarKeyFrameAnimation();

        opacityAnimation.InsertKeyFrame(0f, 0f);

        CubicBezierEasingFunction opacityCubicBezierEasingFunction = compositor.CreateCubicBezierEasingFunction
        (
            new Vector2(0.1f, 0.9f),
            new Vector2(0.2f, 1f  )
        );

        opacityAnimation.InsertKeyFrame(1f, 1f, opacityCubicBezierEasingFunction);

        opacityAnimation.Duration = TimeSpan.FromSeconds(2);

        imageVisual.StartAnimation("Scale"  , scaleAnimation  );
        imageVisual.StartAnimation("Opacity", opacityAnimation);
    }

    #endregion
}

using System;

using System.Numerics;

using Microsoft.UI.Xaml;

using Microsoft.UI.Xaml.Controls;

using Microsoft.UI.Xaml.Media.Imaging;

using Microsoft.UI.Composition;

using Microsoft.UI.Xaml.Hosting;

namespace TestProject;

/// <summary>

/// 메인 페이지

/// </summary>

public sealed partial class MainPage : Page

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainPage()

/// <summary>

/// 생성자

/// </summary>

public MainPage()

{

InitializeComponent();

Loaded += Page_Loaded;

}

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Method

////////////////////////////////////////////////////////////////////////////////////////// Private

#region 페이지 로드시 처리하기 - Page_Loaded(sender, e)

/// <summary>

/// 페이지 로드시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void Page_Loaded(object sender, RoutedEventArgs e)

{

BitmapImage bitmapImage = new BitmapImage(new Uri("ms-appx:///Assets/landscape.png"));

bitmapImage.DecodePixelWidth = 800;

bitmapImage.DecodePixelHeight = 600;

this.image.Source = bitmapImage;

Visual imageVisual = ElementCompositionPreview.GetElementVisual(this.image);

Compositor compositor = imageVisual.Compositor;

Vector3 centerPointVector3 = new Vector3((float)this.image.Width / 2, (float)this.image.Height / 2, 0f);

imageVisual.Scale = new Vector3(1, 1, 1);

imageVisual.Opacity = 0f;

imageVisual.CenterPoint = centerPointVector3;

Vector3KeyFrameAnimation scaleAnimation = compositor.CreateVector3KeyFrameAnimation();

scaleAnimation.InsertKeyFrame(0f, new Vector3(1, 1, 1));

CubicBezierEasingFunction scaleCubicBezierEasingFunction = compositor.CreateCubicBezierEasingFunction

(

new Vector2(0.1f, 0.9f),

new Vector2(0.2f, 1f )

);

scaleAnimation.InsertKeyFrame(1f, new Vector3(6, 6, 1), scaleCubicBezierEasingFunction);

scaleAnimation.Duration = TimeSpan.FromSeconds(2);

ScalarKeyFrameAnimation opacityAnimation = compositor.CreateScalarKeyFrameAnimation();

opacityAnimation.InsertKeyFrame(0f, 0f);

CubicBezierEasingFunction opacityCubicBezierEasingFunction = compositor.CreateCubicBezierEasingFunction

(

new Vector2(0.1f, 0.9f),

new Vector2(0.2f, 1f )

);

opacityAnimation.InsertKeyFrame(1f, 1f, opacityCubicBezierEasingFunction);

opacityAnimation.Duration = TimeSpan.FromSeconds(2);

imageVisual.StartAnimation("Scale" , scaleAnimation );

imageVisual.StartAnimation("Opacity", opacityAnimation);

}

#endregion

}

TestProject.zip