[Paraview] Instanciating an unknown type

[Fred Fred]

Yes, of course, it is in RequestData()

Date: Sat, 20 Feb 2010 10:28:37 -0500
Subject: Re: [Paraview] Instanciating an unknown type
From: berk.geveci at kitware.com
To: stan1313 at hotmail.fr
CC: paraview at paraview.org

Where is the code? In RequestData()?

GetFieldData() != GetPointData() + GetCellData()

FieldData is a set of arrays associated with the whole data object and not necessarily with points or cells. This may be some meta-data like integral of pressure for example. Or anything else your heart desires :-)


-berk

On Sat, Feb 20, 2010 at 5:08 AM, Fred Fred <stan1313 at hotmail.fr> wrote:






Right, vtkDataSetAlgorithm::RequestDataObject() seems to do the job but now I have another problem: the point data are no longer copied to the output.
Here is my code, what is wrong?

  // get the output
  vtkInformation *outInfo = outputVector->GetInformationObject(0);

  vtkDataSet *output = vtkDataSet::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));

  // pass all associated data to output dataset
  output->CopyStructure(this->input);
  output->GetPointData()->PassData(this->input->GetPointData());

  output->GetFieldData()->PassData(this->input->GetFieldData());

and another question: is GetFieldData() the same as GetPointData() + GetCellData() ?

Date: Fri, 19 Feb 2010 06:38:50 -0500

Subject: Re: [Paraview] Instanciating an unknown type
From: berk.geveci at kitware.com
To: stan1313 at hotmail.fr

CC: paraview at paraview.org

vtkDataSet* output = input->NewInstance();

vtkDataSetAlgorithm::RequestDataObject() already does this though. You shouldn't need to. See that method for details.


-berk

On Fri, Feb 19, 2010 at 6:35 AM, Fred Fred <stan1313 at hotmail.fr> wrote:






My problem is as follow: I am writing a vtkDataSetAlgorithm filter and I need to create the ouput dataset, which must be of the same type as the input.
Is there a one-line way to do it, ie avoiding if (input->IsA("vtkPolyData") output=vtkPolyData::New(); else if ... ?



 		 	   		  
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