<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Canvas.Resources>
<PathGeometry x:Key="path"
Figures="M 0 0 C 300 0, 400 400, 700 200
S 0 300 600 576 S 400 700 100 200" />
</Canvas.Resources>
<Path Stroke="Black" Data="{StaticResource path}" />
<Button>
Button
<Button.RenderTransform>
<MatrixTransform x:Name="xform" />
</Button.RenderTransform>
</Button>
<Canvas.Triggers>
<EventTrigger RoutedEvent="Canvas.Loaded">
<BeginStoryboard>
<Storyboard RepeatBehavior="Forever">
<MatrixAnimationUsingPath
Storyboard.TargetName="xform"
Storyboard.TargetProperty="Matrix"
Duration="0:0:10"
PathGeometry="{StaticResource path}"
DoesRotateWithTangent="True" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Canvas.Triggers>
</Canvas>
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