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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 "vtkCellData.h"
#include "vtkHierarchicalBoxDataSet.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkMultiPieceDataSet.h"
#include "vtkObjectFactory.h"
#include "vtkUniformGrid.h"
#include "vtkUnsignedCharArray.h"
#include <cassert>
#include <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 std::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::FillInputPortInformation(
int vtkNotUsed(port), vtkInformation* info )
{
info->Set(
vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(),"vtkUniformGridAMR");
return 1;
}
//------------------------------------------------------------------------------
int vtkExtractDataSets::FillOutputPortInformation(
int vtkNotUsed(port), vtkInformation *info )
{
info->Set(vtkDataObject::DATA_TYPE_NAME(),"vtkMultiBlockDataSet");
return 1;
}
//------------------------------------------------------------------------------
int vtkExtractDataSets::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// STEP 0: Get input
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
assert( "pre: input information object is NULL!" && (inInfo != NULL) );
vtkUniformGridAMR *input =
vtkUniformGridAMR::SafeDownCast(
inInfo->Get( vtkDataObject::DATA_OBJECT() ) );
assert( "pre: input dataset is NULL!" && (input != NULL) );
// STEP 1: Get output
vtkInformation* info = outputVector->GetInformationObject(0);
assert( "pre: output information object is NULL!" && (info != NULL) );
vtkMultiBlockDataSet *output =
vtkMultiBlockDataSet::SafeDownCast(info->Get(vtkDataObject::DATA_OBJECT()));
assert( "pre: output dataset is NULL!" && (output != NULL) );
// STEP 2: Initialize structure
output->SetNumberOfBlocks( input->GetNumberOfLevels() );
unsigned int blk = 0;
for( ; blk < output->GetNumberOfBlocks(); ++blk )
{
vtkMultiPieceDataSet *mpds = vtkMultiPieceDataSet::New();
// mpds->SetNumberOfPieces( input->GetNumberOfDataSets( blk ) );
output->SetBlock( blk, mpds );
mpds->Delete();
} // END for all blocks/levels
// STEP 3: Loop over sected blocks
vtkInternals::DatasetsType::iterator iter = this->Internals->Datasets.begin();
for (;iter != this->Internals->Datasets.end(); ++iter)
{
vtkUniformGrid* inUG = input->GetDataSet(iter->Level, iter->Index);
if( inUG )
{
vtkMultiPieceDataSet *mpds =
vtkMultiPieceDataSet::SafeDownCast( output->GetBlock(iter->Level) );
assert( "pre: mpds is NULL!" && (mpds!=NULL) );
unsigned int out_index = mpds->GetNumberOfPieces();
vtkUniformGrid* clone = inUG->NewInstance();
clone->ShallowCopy(inUG);
// Remove blanking from output datasets.
clone->GetCellData()->RemoveArray(vtkDataSetAttributes::GhostArrayName());
mpds->SetPiece( out_index, clone );
clone->Delete();
}
} // END for all selected items
return 1;
}
//----------------------------------------------------------------------------
void vtkExtractDataSets::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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