[Paraview] vtkDataSet algorithm that takes composite data set as input

[Sohail Shafii]

Thanks. I get these sorts of errors:
vtkPVCompositeDataPipeline (0x2a831a0): Algorithm vtkFastMarcher(0x2a80860) returned failure for request: vtkInformation (0x339b0f0

Before RequestData is reached...

Sohail

________________________________
 From: David E DeMarle <dave.demarle at kitware.com>
To: Sohail Shafii <sohailshafii at yahoo.com> 
Cc: "paraview at paraview.org" <paraview at paraview.org> 
Sent: Friday, January 20, 2012 11:42 AM
Subject: Re: [Paraview] vtkDataSet algorithm that takes composite data set as input
 

Try something like this.
In this case the mapper takes in either type, which you may or may not want.

//----------------------------------------------------------------------------
int vtkCompositePolyDataMapper2::FillInputPortInformation(
  int vtkNotUsed(port), vtkInformation* info)
{
  info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkPolyData");
  info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkCompositeDataSet");
  return 1;
}
David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909



On Fri, Jan 20, 2012 at 2:36 PM, Sohail Shafii <sohailshafii at yahoo.com> wrote:

Hi,
>
>
>I am developing an algorithm that requires a composite data set as input while creating a vtkDataSet as output -- basically it inherit from vtkDataSetAlgorithm. I know that one must provide a new definition to the FillInputPortInformation(int port, vtkInformation *info) function, but I'm not sure how. Please advise, thank you.
>
>Sohail
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