[vtk-developers] Variable output type
Wylie, Brian
bnwylie at sandia.gov
Sat May 29 11:32:55 EDT 2010
Not sure if this helps but vtkTableToGraph can either output a directed or undirected graph...
It just creates both and then conditional logic on the choice...
// Create builder for the graph
VTK_CREATE(vtkMutableDirectedGraph, dirBuilder);
VTK_CREATE(vtkMutableUndirectedGraph, undirBuilder);
vtkGraph *builder = 0;
if (this->Directed)
{
builder = dirBuilder;
}
else
{
builder = undirBuilder;
}
// Add the correct number of vertices to the graph based on the number of
// rows in the vertex table.
builder->GetVertexData()->PassData(vertexTable->GetRowData());
for (vtkIdType i = 0; i < vertexTable->GetNumberOfRows(); ++i)
{
if (this->Directed)
{
dirBuilder->AddVertex();
}
else
{
undirBuilder->AddVertex();
}
}
Brian Wylie - Org 1424
Sandia National Laboratories
MS 1323 - Building CSRI/242
(505)844-2238 FAX(505)284-2518
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-----Original Message-----
From: vtk-developers-bounces at vtk.org [mailto:vtk-developers-bounces at vtk.org] On Behalf Of David Doria
Sent: Saturday, May 29, 2010 9:27 AM
To: Karthik Krishnan
Cc: VTK Developers
Subject: Re: [vtk-developers] Variable output type
> In addition to what you have, please also try adding the following method :
>
> int vtkTestFilter::ProcessRequest(vtkInformation* request,
> vtkInformationVector**
> inInfoVec,
> vtkInformationVector*
> outInfoVec)
> {
> if(request->Has(vtkDemandDrivenPipeline::REQUEST_DATA_OBJECT()))
> {
> return vtkAlgorithm::ProcessRequest(request, inputVector, outputVector);
> }
>
> return this->Superclass::ProcessRequest(request, inputVector,
> outputVector);
> }
When I added that function (changing inputVector to inInfoVec and
outputVector to outInfoVec), I now get:
vtkStreamingDemandDrivenPipeline (0x8ba81c8): Algorithm
vtkTestFilter(0x8ba73b8) did not create output for port 0 when asked
by REQUEST_DATA_OBJECT and does not specify any DATA_TYPE_NAME.
Thanks for your help - as usual I am trying not to answer just my
specific question but generate something useful enough to put on the
wiki!
Thanks,
David
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