RenderTransform и смена центра поворота.

XAML
<UserControl x:Class="ObjrctRotation.MainPage"

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"

mc:Ignorable="d"

d:DesignHeight="300" d:DesignWidth="400">


<Canvas x:Name="C" Background="White">

    <Path x:Name="thing" RenderTransformOrigin="0,0" Stretch="Fill" Stroke="Black" StrokeThickness="2" Height="93.153" HorizontalAlignment="Left" VerticalAlignment="Top" Width="106.357" UseLayoutRounding="False" Data="M48.723255,124.82815 C41.00029,80.999809 81.000046,65.000069 112.99985,89.000092 C144.99965,113.00011 168.9996,169.00061 136.99989,169.0002 C105.00018,168.99979 104.9999,145.00015 81.000053,145.00015 C57.000206,145.00015 56.44622,168.65649 48.723255,124.82815 z" Canvas.Left="69" Canvas.Top="24" />

    <Slider Value="0" Minimum="0" Maximum="360" Width="100" Margin="300,0,0,272" ValueChanged="Slider_ValueChanged" />

    <TextBlock x:Name="test" Width="100" Height="20" Canvas.Left="300" Canvas.Top="24" />

    <Button Canvas.Left="300" Canvas.Top="24" Content="ChangeCenter" Height="20" Name="button1" Width="100" Click="button1_Click"/>

</Canvas>

CodeBehind
public partial class MainPage : UserControl

{

    public MainPage()

    {

        InitializeComponent();

    }

    private void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)

    {

        RotateTransform rotate = new RotateTransform()

        {

            Angle=e.NewValue

        };        


        thing.RenderTransform = rotate;

    }

    private void button1_Click(object sender, RoutedEventArgs e)

    {

        thing.RenderTransformOrigin = new Point(thing.RenderTransformOrigin.X + 0.2, thing.RenderTransformOrigin.Y + 0.2);

    }

}