xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Name="canv">
BeginTime="-0:0:1"
Duration="0:0:2"
RepeatBehavior="Forever" AutoReverse="True"
From="0" To="{Binding ElementName=canv, Path=ActualWidth}" />
Duration="0:0:2"
RepeatBehavior="Forever" AutoReverse="True"
From="0" To="{Binding ElementName=canv, Path=ActualHeight}" />