[vtkusers] Smoothing

[Ted Vu]

Okay actually, when I use vtkThresholdPoints together with 
vtkCellDataToPonitData then now I see a bunch of spaced out points
Does it not interpolate the points scalar info in order to not get this 
dotty/particle look?
Is there a way to do this?
thank-you again!



>From: "Ted Vu" <lost_bits1110 at hotmail.com>
>To: malcolm at geovision.co.za, vtkusers at vtk.org
>Subject: Re: [vtkusers] Smoothing
>Date: Thu, 26 Feb 2004 02:53:45 +0000
>
>Hi Malcolm
>Thanks kindly for your help
>Have you by any chance used this class before?
>
>What I did was I set the input of vtkCellDataToPointData class to the 
>PolyData which contained the cells that I was color mapping originally.  
>Then I get the new output using the vtkCellDataToPolyData class object  as 
>follows:
>
>CellToPointData->SetInput(SetOfQuadCells);
>NewPolyDataCellsUsingPointData = CellToPointData->GetPolyDataOutput();
>
>But this seems to not associate any scalar data at all because i just get a 
>white parallellogram. I also  removed the line where it says 
>Mapper->SetScalarModeToUseCellData (but with or without this, it still 
>gives the same output)
>
>I also tried with and without 'PassCellDataOn();'
>
>is there anything else i'm overlooking?
>thanks so much
>
>
>>From: "Malcolm Drummond" <malcolm at geovision.co.za>
>>To: "Ted Vu" <lost_bits1110 at hotmail.com>
>>Subject: Re: [vtkusers] Smoothing
>>Date: Wed, 25 Feb 2004 18:57:23 +0200
>>
>>Hi Ted
>>
>>I assume you're using cell-data. You can get a blended effect by using
>>point-data instead. vtkCellDataToPointData will do the conversion for you.
>>
>>HTH
>>Malcolm
>>
>>----- Original Message -----
>>From: "Ted Vu" <lost_bits1110 at hotmail.com>
>>To: <vtkusers at vtk.org>
>>Sent: Wednesday, February 25, 2004 5:48 PM
>>Subject: [vtkusers] Smoothing
>>
>>
>> > Good morning
>> >
>> > I have a vtkPolyData (one big parallelogram) which consists of many
>> > parallelograms (I got this from vtkPlaneSource) and I have color coded
>>each
>> > of the cells to some color corresponding to a scalar
>> >
>> > But this looks very 'pixelated'
>> > I cannot increase teh number of cells/resolution (i.e the number of
>>smaller
>> > parallelograms in my big parallelogram) becaus this significantly 
>>reduces
>> > speed etc..
>> >
>> > So I tried using vtkSmoothPolyDataFilter by doing teh following:
>> >
>> >        Smoother = vtkSmoothPolyDataFilter::New();
>> > Smoother->SetNumberOfIterations(100);
>> > Smoother->FeatureEdgeSmoothingOn();
>> > Smoother->SetInput(myPolyData->GetOutput());
>> >
>> > but this makes absolutely no difference
>> >
>> > I also treid teh same with Smoother =
>>vtkWindowedSincPolyDataFilter::New();
>> >
>> > So how can I sort of 'blur' all these parallelograms so it doesnt look 
>>so
>> > pixelated?
>> >
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