[vtkusers] Coloring of Iso-Surfaces (vtkContourFilter)

[Sebastian Gatzka]

Yes - that's it! Working!

Thank you!

Am 15.03.2010 14:39, schrieb Sebastien Jourdain:
> I forgot to say that binding a LUT to a mapper might not be enough, 
> you have to set the Scalar range to the mapper as well.
> But at least, the LUT is properly set.
>
> scalarIsoSurfaceMapper->SetScalarRange( sGridPointData->GetOutput()->GetScalarRange() 
> );
>
> Hope I did not forget something else... ;-)
>
> Seb
>
>
> On Mon, Mar 15, 2010 at 9:06 AM, Sebastian Gatzka 
> <sebastian.gatzka at stud.tu-darmstadt.de 
> <mailto:sebastian.gatzka at stud.tu-darmstadt.de>> wrote:
>
>     Unfortunately not. All iso surfaces are still colored the same,
>     when using the lookup table from the cutting plane.
>
>
>     Am 15.03.2010 13:58, schrieb Sebastien Jourdain:
>>     You have to do something like that
>>
>>     scalarIsoSurfaceMapper->SetLookupTable( cuttingPlaneLUT );
>>
>>     Therefore the mapper will color both outputs with the same color
>>     manner.
>>
>>     Seb
>>
>>     On Mon, Mar 15, 2010 at 8:44 AM, Sebastian Gatzka
>>     <sebastian.gatzka at stud.tu-darmstadt.de
>>     <mailto:sebastian.gatzka at stud.tu-darmstadt.de>> wrote:
>>
>>         I have a lookuptable I use for a cutting plane, which is set
>>         up and displaying correctly.
>>         Concerning the contour filter I did nothing with lookup
>>         tables. Just the code below.
>>         Do I have to use one?
>>
>>         Am 15.03.2010 13:38, schrieb Sebastien Jourdain:
>>>         Are you using the same lookuptable for all the outputs ? Did
>>>         you set the range properly to that lookuptable and mapper ?
>>>
>>>         On Mon, Mar 15, 2010 at 7:14 AM, Sebastian Gatzka
>>>         <sebastian.gatzka at stud.tu-darmstadt.de
>>>         <mailto:sebastian.gatzka at stud.tu-darmstadt.de>> wrote:
>>>
>>>             No, still blue ...
>>>
>>>             Am 15.03.2010 11:41, schrieb David E DeMarle:
>>>>             scalarIsoSurface->ComputeScalarsOn();
>>>>
>>>>             On Mon, Mar 15, 2010 at 4:55 AM, Sebastian Gatzka
>>>>             <sebastian.gatzka at stud.tu-darmstadt.de>  <mailto:sebastian.gatzka at stud.tu-darmstadt.de>  wrote:
>>>>                
>>>>>             Hello world.
>>>>>
>>>>>             After I have finally found a way of making the vtkContourFilter work I'm now
>>>>>             facing how to color them.
>>>>>             I want to color them according to the value they are having.
>>>>>             Example: The cutting plane displays the "right" color for the scalar data,
>>>>>             but the iso-surfaces (contours) are colored identically.
>>>>>             Have a look at the screenshot in the attachment.
>>>>>
>>>>>             So, what do I have to do, to set up the right coloring?
>>>>>
>>>>>             Here is the code I am using to create the contours:
>>>>>
>>>>>             vtkContourFilter *scalarIsoSurface = vtkContourFilter::New();
>>>>>             scalarIsoSurface->SetInput(sGridPointData->GetOutput());
>>>>>             scalarIsoSurface->SetValue(0,3);
>>>>>             scalarIsoSurface->SetValue(1,5);
>>>>>             scalarIsoSurface->Update();
>>>>>
>>>>>             vtkPolyDataNormals *sGridPolyDataNormal = vtkPolyDataNormals::New();
>>>>>             sGridPolyDataNormal->SetInput(scalarIsoSurface->GetOutput());
>>>>>             sGridPolyDataNormal->Update();
>>>>>
>>>>>             vtkPolyDataMapper *scalarIsoSurfaceMapper = vtkPolyDataMapper::New();
>>>>>             scalarIsoSurfaceMapper->SetInput(sGridPolyDataNormal->GetOutput());
>>>>>             scalarIsoSurfaceMapper->Update();
>>>>>
>>>>>             vtkActor *scalarIsoSurfaceActor = vtkActor::New();
>>>>>             scalarIsoSurfaceActor->SetMapper(scalarIsoSurfaceMapper);
>>>>>
>>>>>             Have a nice day.
>>>>>             Sebastian
>>>>>
>>>>>
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>>>>>
>>>>>                  
>>>>                
>>>
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>>
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>
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