[vtkusers] Re: vtkImageDataGeometryFilter with vtkStructuredPointsReader

[Alfredo Gourbish]

Hi,

Nobody has idea for that ? It may be an important thing in my project if I 
could extract a part of my volume...

Thank's.

Gourbish

----- Original Message ----- 
From: "Aldredo Gourbish" <the.answer3 at libertysurf.fr>
To: "vtkusers" <vtkusers at vtk.org>
Sent: Thursday, August 02, 2007 12:28 PM
Subject: vtkImageDataGeometryFilter with vtkStructuredPointsReader


Hi everbody,

I have a problem of data type using vtkImageDataGeometryFilter. In fact, I 
use this class with an input data of type vtkStructuredPointsReader. 
Normaly, there is no problem here.
After, I try to render the volume using vtkOpenGLVolumeTextureMapper3D. But 
here I have these errors :
"
ERROR: In .\vtkVolumeMapper.cxx, line 83
vtkOpenGLVolumeTextureMapper3D (03700020): The SetInput method of this 
mapper requires vtkImageData as input

ERROR: In .\vtkVolumeMapper.cxx, line 83ERROR: In 
.\vtkDemandDrivenPipeline.cxx, line 726
vtkStreamingDemandDrivenPipeline (036B83E8): Input port 0 of algorithm 
vtkOpenGLVolumeTextureMapper3D(ERROR: In .\vtkDemandDrivenPipeline.cxx, line 
726
vtkStreamingDemandDrivenPipeline (036B83E8): Input port 0 of algorithm 
vtkOpenGLVolumeTextureMapper3D(03700020) has 0 connections but is not 
optional.
"

So I understood that de data type is not good since 
vtkImageDataGeometryFilter->GetOutput() returns a vtkPolyData*.
Finally the vtkImageDataGeometryFilter does not seem to be the better class 
to extract data from vtkStructuredPoints, unless there is a filter to 
convert vtkPolyData to vtkImageData ? But I didn't find it...

So if somebody has any idea... thank's to help me ! :-)


Have a nice day.

Gourbish

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