WPF FlowDocument to XPS rendering with text rotation effect - wpf

Question

I am rendering XPS using WPF. This is completely dynamic (XAML free).
In my code, I have following code to set up text rotation.
Private Shared Sub ApplyRotation(style As BoxStyleData, run As TextElement)
If style IsNot Nothing Then
If Math.Abs(style.TextRotation) > Double.Epsilon Then
Dim effects = New TextEffectCollection
Dim effect = New TextEffect()
effect.Transform = New RotateTransform(style.TextRotation)
effect.PositionCount = 100
effects.Add(effect)
run.TextEffects = effects
End If
End If
End Sub
It is inside FlowPanel, therefore some bug is preventing me from setting rotation for whole paragraph (more on that here http://social.msdn.microsoft.com/Forums/nl/wpf/thread/931f1995-d039-4364-b09b-fcd0a43fd737)
My problem is, even when I use the fix, result is not correct. After certain amount of characters, text is not rotated anymore:
Note, that screenshot is from XPS to which I render result.
When I render it to XAML, you can see that effect is correctly mapped to all Runs in text.
<Paragraph Margin="0,0,0,0" Padding="0,18.9,0,0" TextAlignment="Center" ClearFloaters="None" FontSize="14.62">
<Span FontSize="14.62"><Run><Run.TextEffects><TextEffect PositionCount="100"><TextEffect.Transform><RotateTransform Angle="356.7" /></TextEffect.Transform></TextEffect></Run.TextEffects>Denken Sie frühzeitig</Run></Span><LineBreak />
<Span FontSize="14.62"><Run><Run.TextEffects><TextEffect PositionCount="100"><TextEffect.Transform><RotateTransform Angle="356.7" /></TextEffect.Transform></TextEffect></Run.TextEffects>an den</Run></Span><LineBreak />
<Span FontSize="14.62"><Run><Run.TextEffects><TextEffect PositionCount="100"><TextEffect.Transform><RotateTransform Angle="356.7" /></TextEffect.Transform></TextEffect></Run.TextEffects>Räderwechsel!</Run></Span><LineBreak />
<LineBreak />
<Span FontSize="14.62"><Run><Run.TextEffects><TextEffect PositionCount="100"><TextEffect.Transform><RotateTransform Angle="356.7" /></TextEffect.Transform></TextEffect></Run.TextEffects>Unser</Run></Span><LineBreak />
<Span FontWeight="Bold" FontSize="14.62"><Run><Run.TextEffects><TextEffect PositionCount="100"><TextEffect.Transform><RotateTransform Angle="356.7" /></TextEffect.Transform></TextEffect></Run.TextEffects>Winter Check-Point</Run></Span><LineBreak />
<Span FontSize="14.62"><Run><Run.TextEffects><TextEffect PositionCount="100"><TextEffect.Transform><RotateTransform Angle="356.7" /></TextEffect.Transform></TextEffect></Run.TextEffects>ist für Sie offen!</Run></Span></Paragraph>
Now, does anyone has any idea how to achieve rotation for whole text as I really need it.
Thanks
EDIT:
For quick test that it does not work properly, you can create WPF application and just paste following XAML Code
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<FlowDocumentPageViewer>
<FlowDocument>
<Paragraph Margin="0,0,0,0" Padding="0,18.9,0,0" TextAlignment="Center" ClearFloaters="None" FontSize="14.62">
<Span FontSize="14.62">
<Run>
<Run.TextEffects>
<TextEffect PositionCount="100">
<TextEffect.Transform>
<RotateTransform Angle="356.7" />
</TextEffect.Transform>
</TextEffect>
</Run.TextEffects> Denken Sie frühzeiti
</Run>
</Span>
<LineBreak />
<Span FontSize="14.62">
<Run>
<Run.TextEffects>
<TextEffect PositionCount="100">
<TextEffect.Transform>
<RotateTransform Angle="356.7" />
</TextEffect.Transform>
</TextEffect>
</Run.TextEffects> an den
</Run>
</Span>
<LineBreak />
<Span FontSize="14.62">
<Run>
<Run.TextEffects>
<TextEffect PositionCount="100">
<TextEffect.Transform>
<RotateTransform Angle="356.7" />
</TextEffect.Transform>
</TextEffect>
</Run.TextEffects> Räderwechsel!
</Run>
</Span>
<LineBreak />
<LineBreak />
<Span FontSize="14.62">
<Run>
<Run.TextEffects>
<TextEffect PositionCount="100">
<TextEffect.Transform>
<RotateTransform Angle="356.7" />
</TextEffect.Transform>
</TextEffect>
</Run.TextEffects> Unser
</Run>
</Span>
<LineBreak />
<Span FontWeight="Bold" FontSize="14.62">
<Run>
<Run.TextEffects>
<TextEffect PositionCount="100">
<TextEffect.Transform>
<RotateTransform Angle="356.7" />
</TextEffect.Transform>
</TextEffect>
</Run.TextEffects> Winter Check-Point
</Run>
</Span>
<LineBreak />
<Span FontSize="14.62">
<Run>
<Run.TextEffects>
<TextEffect PositionCount="100">
<TextEffect.Transform>
<RotateTransform Angle="356.7" />
</TextEffect.Transform>
</TextEffect>
</Run.TextEffects> ist für Sie offen!
</Run>
</Span>
</Paragraph>
</FlowDocument>
</FlowDocumentPageViewer>
</Grid>
</Window>

Answer 1

So, I've fixed it by switching
effect.PositionCount = 100
to
effect.PositionCount = Integer.Max
which fixed the problem.
I did not understand correctly what it stood for and thought it means something like percentage of effect done.