[vtkusers] Set an order to vtkActor rendering

[Jothybasu Selvaraj]

You could manipulate the vtkActor::SetPosition() and their opacity.

Jothy

On Fri, May 25, 2012 at 9:49 AM, jimmigoo <jimmigoo at gmail.com> wrote:

> Hi everybody!
>
> I would like to know if there is one or more methods in any vtk class,
> that allow you to set a kind of ORDER to vtkActors to be rendered.
> I'll try to explain my problem with the attached image below.
>
> I have two vtkImageData (the red is the front one, the green is the back
> one
> ),
> with the same FieldData array inside them, and each scalar value is the
> same
> in both vtkImageData.
>
> When I apply my pipeline, using vtkThreshold and vtkScalarWarp filters,
> it seems that VTK rendering doesn't recognize which actor has to be
> rendered
> as first,
> and the graphic result is a sort of multiple cut of the first image,
> maybe because VTK recognizes both vtkActors at the same elevation value,
> and doesn't know which one has to be represented.
>
> I found a method named BackfaceRender in vtkProperty class,
> I tried using
>
> vtkSecondActor->BackFaceRender(vtkFirstActor, vtkRenderer),
>
> but it doesn't work.
>
> Does anyone know this problem?
> I really appreciate any kind of comments or suggest,
> I'm looking for your reply,
>
> Regards,
>
> Francesco
> http://vtk.1045678.n5.nabble.com/file/n5713391/overlay.png
>
>
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-- 
Jothy
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