WPF BeginStoryboard Storyboard DoubleAnimation TargetProperty SplineDoubleKeyFrame KeySpline KeyTime

<Window x:Class="WpfApp119.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp119"
        WindowState="Maximized"
        mc:Ignorable="d"
        Title="MainWindow">
    <Canvas>
        <Image Source="Images/1.jpg" Width="200" Height="500">
            <Image.Triggers>
                <EventTrigger RoutedEvent="Image.Loaded">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <DoubleAnimation Storyboard.TargetProperty="(Canvas.Left)"
                                                 From="0"
                                                 To="{Binding ActualWdh,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                                                 Duration="0:0:3"
                                                 AutoReverse="True"
                                                 RepeatBehavior="Forever"/>
                                <DoubleAnimationUsingKeyFrames
                                    Storyboard.TargetProperty="(Canvas.Top)"
                                    Duration="0:0:3"
                                    AutoReverse="True"
                                    RepeatBehavior="Forever">
                                    <!--<LinearDoubleKeyFrame Value="-150"
                                                          KeyTime="0:0:0"/>
                                    <LinearDoubleKeyFrame Value="{Binding ActualHt,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                                                          KeyTime="0:0:1"/>
                                    <LinearDoubleKeyFrame Value="-150"
                                                          KeyTime="0:0:2"/>
                                    <LinearDoubleKeyFrame Value="{Binding ActualHt,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                                                          KeyTime="0:0:3"/>-->
                                    <SplineDoubleKeyFrame KeySpline="0,1 1,0"
                                                          Value="0"
                                                          KeyTime="0:0:0"/>
                                    <SplineDoubleKeyFrame KeySpline="0,1 1,0"
                      Value="{Binding ActualHt,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                      KeyTime="0:0:1"/>
                                    <SplineDoubleKeyFrame KeySpline="0,1 1,0"
                      Value="0"
                      KeyTime="0:0:2"/>
                                    <SplineDoubleKeyFrame KeySpline="0,1 1,0"
                      Value="{Binding ActualHt,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                      KeyTime="0:0:3"/>
                                </DoubleAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </Image.Triggers>
        </Image>
    </Canvas>
</Window>




//cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApp119
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = this;
            this.Loaded += MainWindow_Loaded;
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void OnPropertyChanged([CallerMemberName] string propName = "")
        {
            var handler = PropertyChanged;
            if (handler != null)
            {
                handler?.Invoke(this, new PropertyChangedEventArgs(propName));
            }
        }

        private double actualWdh;

        public double ActualWdh
        {
            get
            {
                return actualWdh;
            }
            set
            {
                if (actualWdh != value)
                {
                    this.actualWdh = value;
                    OnPropertyChanged(nameof(ActualWdh));
                }
            }
        }

        private double actualHt;
        public double ActualHt
        {
            get
            {
                return actualHt;
            }
            set
            {
                if (value != actualHt)
                {
                    actualHt = value;
                    OnPropertyChanged();
                }
            }
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            Console.WriteLine($"{ActualWidth},{ActualHeight}");
            ActualWdh = this.ActualWidth;
            ActualHt = this.ActualHeight;
        }
    }
}