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/*=========================================================================
Program: Visualization Toolkit
Module: vtkExtractTimeSteps.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 "vtkExtractTimeSteps.h"
#include "vtkDataObject.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include <algorithm>
#include <vector>
vtkStandardNewMacro(vtkExtractTimeSteps);
//----------------------------------------------------------------------------
void vtkExtractTimeSteps::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
int count = static_cast<int>(this->TimeStepIndices.size());
os << indent << "Number of Time Steps: " << count << std::endl;
if (count > 0)
{
std::set<int>::iterator it = this->TimeStepIndices.begin();
os << indent << "Time Step Indices: " << *it++;
for (int i = 1; i < std::min(count, 4); ++i)
{
os << ", " << *it++;
}
if (count > 9)
{
std::advance(it, count - 8);
os << ", ... ";
}
while (it != this->TimeStepIndices.end())
{
os << ", " << *it++;
}
os << std::endl;
}
}
//----------------------------------------------------------------------------
void vtkExtractTimeSteps::AddTimeStepIndex(int timeStepIndex)
{
if (this->TimeStepIndices.insert(timeStepIndex).second)
{
this->Modified();
}
}
void vtkExtractTimeSteps::SetTimeStepIndices(int count, const int *timeStepIndices)
{
this->TimeStepIndices.clear();
this->TimeStepIndices.insert(timeStepIndices, timeStepIndices + count);
this->Modified();
}
void vtkExtractTimeSteps::GetTimeStepIndices(int *timeStepIndices) const
{
std::copy(this->TimeStepIndices.begin(), this->TimeStepIndices.end(), timeStepIndices);
}
void vtkExtractTimeSteps::GenerateTimeStepIndices(int begin, int end, int step)
{
if (step != 0)
{
this->TimeStepIndices.clear();
for (int i = begin; i < end; i += step)
{
this->TimeStepIndices.insert(i);
}
this->Modified();
}
}
//----------------------------------------------------------------------------
int vtkExtractTimeSteps::RequestInformation(vtkInformation*,
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *outInfo = outputVector->GetInformationObject(0);
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
if (!this->TimeStepIndices.empty() &&
inInfo->Has(vtkStreamingDemandDrivenPipeline::TIME_STEPS()))
{
double *inTimes =
inInfo->Get(vtkStreamingDemandDrivenPipeline::TIME_STEPS());
int numTimes =
inInfo->Length(vtkStreamingDemandDrivenPipeline::TIME_STEPS());
std::vector<double> outTimes;
for (std::set<int>::iterator it = this->TimeStepIndices.begin();
it != this->TimeStepIndices.end(); ++it)
{
if (*it >= 0 && *it < numTimes)
{
outTimes.push_back(inTimes[*it]);
}
}
if (!outTimes.empty())
{
outInfo->Set(vtkStreamingDemandDrivenPipeline::TIME_STEPS(), &outTimes[0],
static_cast<int>(outTimes.size()));
double range[2] = { outTimes.front(), outTimes.back() };
outInfo->Set(vtkStreamingDemandDrivenPipeline::TIME_RANGE(), range, 2);
}
}
return 1;
}
//----------------------------------------------------------------------------
int vtkExtractTimeSteps::RequestData(vtkInformation *,
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
vtkDataObject* inData = vtkDataObject::GetData(inputVector[0], 0);
vtkDataObject* outData = vtkDataObject::GetData(outputVector, 0);
if (inData && outData)
{
outData->ShallowCopy(inData);
}
return 1;
}
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