[vtkusers] Z-Order of vtkRenderer,vtkImageActor,vtkTextActor

[Shang Mu]

try this:
actor2d.GetProperty().SetDisplayLocationToForeground/Foreground() or 
SetDisplayLocation(int)

http://www.vtk.org/doc/nightly/html/classvtkProperty2D.html#aff92a7410107d67198f73fb1af85b9c

Shang

----- Original Message ----- 
From: "Thomas Lambertz" <thomas at hexerei-software.de>
To: <vtkusers at vtk.org>
Sent: Friday, September 01, 2006 9:06 PM
Subject: [vtkusers] Z-Order of vtkRenderer,vtkImageActor,vtkTextActor


> Hi there,
>
> i have a problem with providing some text-information for dicom-slices.
>
> Each slice is represented by a vtkImageActor and a vtkRenderer. All 
> vtkRenderers are arranged like a chessboard using their SetViewport() 
> method. There is no overlapping and all went fine.
>
> I thought i could add some text-information by adding another vtkRenderer 
> with a vtkTextActor. This renderer could use the hole RenderWindow - 
> (SetViewport(0.0,0.0,1.0,1.0)). But whatever order of 
> RenderWindow->AddRenderer() i choose - the text is never visible. By 
> omitting the slice-renderer i see the text - so the TextActor/Renderer 
> seemes to work (and is only hidden behind them ?).
> But:
> By adding the TextActor to each sliceRenderer the text is visible. But 
> that´s not a real solution as all sliceRenderer are restricted by their 
> viewport-settings - and i dont want to add the TextActor to all of them 
> only to see the hole text.
>
> It looks to me as i am struggling with the z-order of these renderers. The 
> order of adding the renderer seemes not to solve my problem.
> What am i doing wrong ? Can i set an z-order by hand ? Should i use 
> another classes for my problem ?
>
> Any suggestions are very appreciated.
>
> Thanks in advance,
> Tom
>
>
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