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/*=========================================================================
Program: Visualization Toolkit
Module: vtkExtractDataSets.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkExtractDataSets.h"
#include "vtkObjectFactory.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkHierarchicalBoxDataSet.h"
#include "vtkUniformGrid.h"
#include "vtkAMRBox.h"
#include "vtkUnsignedCharArray.h"
#include <vtkstd/set>
class vtkExtractDataSets::vtkInternals
{
public:
struct Node
{
unsigned int Level;
unsigned int Index;
bool operator() (const Node& n1, const Node& n2) const
{
if (n1.Level == n2.Level)
{
return (n1.Index < n2.Index);
}
return (n1.Level < n2.Level);
}
};
typedef vtkstd::set<Node, Node> DatasetsType;
DatasetsType Datasets;
};
vtkStandardNewMacro(vtkExtractDataSets);
//----------------------------------------------------------------------------
vtkExtractDataSets::vtkExtractDataSets()
{
this->Internals = new vtkInternals();
}
//----------------------------------------------------------------------------
vtkExtractDataSets::~vtkExtractDataSets()
{
delete this->Internals;
}
//----------------------------------------------------------------------------
void vtkExtractDataSets::AddDataSet(
unsigned int level, unsigned int idx)
{
vtkInternals::Node node;
node.Level = level;
node.Index = idx;
this->Internals->Datasets.insert(node);
this->Modified();
}
//----------------------------------------------------------------------------
void vtkExtractDataSets::ClearDataSetList()
{
this->Internals->Datasets.clear();
this->Modified();
}
//----------------------------------------------------------------------------
int vtkExtractDataSets::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
vtkHierarchicalBoxDataSet *input = vtkHierarchicalBoxDataSet::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkInformation* info = outputVector->GetInformationObject(0);
vtkHierarchicalBoxDataSet *output = vtkHierarchicalBoxDataSet::SafeDownCast(
info->Get(vtkDataObject::DATA_OBJECT()));
unsigned int numLevels = input->GetNumberOfLevels();
output->SetNumberOfLevels(numLevels);
// copy levels meta-data.
for (unsigned int cc=0; cc < numLevels; cc++)
{
if (input->HasLevelMetaData(cc))
{
output->GetLevelMetaData(cc)->Copy(input->GetLevelMetaData(cc));
}
}
// Note that we need to ensure that all processess have the same tree
// structure in the output.
vtkInternals::DatasetsType::iterator iter;
for (iter = this->Internals->Datasets.begin();
iter != this->Internals->Datasets.end(); ++iter)
{
vtkAMRBox box;
vtkUniformGrid* inUG = input->GetDataSet(
iter->Level, iter->Index, box);
unsigned int out_index = output->GetNumberOfDataSets(iter->Level);
output->SetNumberOfDataSets(iter->Level, out_index+1);
if (input->HasMetaData(iter->Level, iter->Index))
{
output->GetMetaData(iter->Level, out_index)->Copy(
input->GetMetaData(iter->Level, iter->Index));
}
if (inUG)
{
vtkUniformGrid* clone = inUG->NewInstance();
clone->ShallowCopy(inUG);
// Remove blanking from output datasets.
clone->SetCellVisibilityArray(0);
output->SetDataSet(iter->Level,
out_index, box, clone);
clone->Delete();
}
}
// regenerate blanking.
output->GenerateVisibilityArrays();
return 1;
}
//----------------------------------------------------------------------------
void vtkExtractDataSets::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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