[vtkusers] Fwd: Re: vtkPolyDataSilhouette troubles

[Lars Friedrich Lars]

-------- Original-Nachricht --------
Datum: Thu, 25 Feb 2010 22:08:56 +0100
Von: "Lars Friedrich Lars" <lars-friedrich at gmx.net>
An: felixmeissner <felix.meissner at student.fh-kiel.de>
Betreff: Re: [vtkusers]  vtkPolyDataSilhouette troubles

hi,

have a look at this thread:
http://old.nabble.com/3D-surface-to-2D-silhouette-td26642059.html
I added a code snippet and data that show what the class does.

However, when I look at the images you added (CT-slices, right?), I guess you would like to visualize the contours of a structure (set) at the current slice. To accomplish that you can simply use vtkCutter. This class does the desired cutting (non-projective in contrast to vtkPolyDataSilhouette).

regards,
lars


-------- Original-Nachricht --------
> Datum: Thu, 25 Feb 2010 11:01:09 -0800 (PST)
> Von: felixmeissner <felix.meissner at student.fh-kiel.de>
> An: vtkusers at vtk.org
> Betreff: [vtkusers]  vtkPolyDataSilhouette troubles

> 
> Hi,
> 
> I'm trying to draw a vtkPolyDataSilhouette based on a vtkPolyData-Model to
> a
> vtkImageViewer2. This Works partially, but the silhouette is rendered only
> in small parts to the image:
> 
> http://de.tinypic.com/view.php?pic=1zx1jer&s=6
> 
> As you can see only parts of the "silhouette" are painted.
> 
> Im not sure if vtkPolyDataSilhouette is the right class to use for this
> purpose or if I missed an option so that the contour is continous. Any
> suggestens are welcome.
> 
> Thank you, Felix
> 
> ==== some code snippets Im using =====
> 
>         self.silhouette = vtk.vtkPolyDataSilhouette()
>         self.silhouette.SetInput(model.GetOutput())
>         self.silhouette.BorderEdgesOn()
>         self.silhouette.PieceInvariantOn()
>        
> self.silhouette.SetCamera(self.viewer.GetRenderer().GetActiveCamera())
>         
>         mapper = vtk.vtkPolyDataMapper()
>         mapper.SetInput(self.silhouette.GetOutput())
>         self.__SilhouetteActor = vtk.vtkActor()
>         self.__SilhouetteActor.SetMapper(mapper)
>         self.__SilhouetteActor.GetProperty().SetColor(1, 0, 0)
> 
>         self.__SilhouetteActor.SetOrigin(x, y, z)
>         self.__SilhouetteActor.VisibilityOn()
>         self.__SliceViewer.GetRenderer().AddActor(self.__SilhouetteActor)
>         self.__SliceViewer.Render()
> -- 
> View this message in context:
> http://old.nabble.com/vtkPolyDataSilhouette-troubles-tp27714500p27714500.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
> 
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