With GeometryAnimation You can change a geometry with animation to a different geometry

Usage

First add HandyControl refrence

xmlns:hc="https://handyorg.github.io/handycontrol"

then in your xaml add resources and storyboard

 <UserControl.Resources>
        <Storyboard x:Key="StoryboardOnLoaded" RepeatBehavior="Forever" AutoReverse="True">
            <hc:GeometryAnimationUsingKeyFrames Storyboard.TargetProperty="Data" Storyboard.TargetName="PathDemo">
                <hc:DiscreteGeometryKeyFrame KeyTime="0:0:0.7" Value="{StaticResource FaceBookGeometry}"/>
                <hc:EasingGeometryKeyFrame KeyTime="0:0:1.2" Value="{StaticResource TwitterGeometry}">
                    <hc:EasingGeometryKeyFrame.EasingFunction>
                        <QuarticEase EasingMode="EaseInOut"/>
                    </hc:EasingGeometryKeyFrame.EasingFunction>
                </hc:EasingGeometryKeyFrame>
            </hc:GeometryAnimationUsingKeyFrames>
            <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="Fill.(SolidColorBrush.Color)" Storyboard.TargetName="PathDemo">
                <DiscreteColorKeyFrame KeyTime="0:0:0.7" Value="#3b5998"/>
                <EasingColorKeyFrame KeyTime="0:0:1.2" Value="#4099ff">
                    <EasingColorKeyFrame.EasingFunction>
                        <QuarticEase EasingMode="EaseInOut"/>
                    </EasingColorKeyFrame.EasingFunction>
                </EasingColorKeyFrame>
                <EasingColorKeyFrame KeyTime="0:0:1.9" Value="#4099ff"/>
            </ColorAnimationUsingKeyFrames>
        </Storyboard>
    </UserControl.Resources>
    <UserControl.Triggers>
        <EventTrigger RoutedEvent="FrameworkElement.Loaded">
            <BeginStoryboard Storyboard="{StaticResource StoryboardOnLoaded}"/>
        </EventTrigger>
    </UserControl.Triggers>

now we need a path to display geometry

<Path Name="PathDemo" Width="100" Height="100" Data="{StaticResource FaceBookGeometry}" Fill="#3b5998"/>

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