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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkSynchronizeTimeFilter.h"
#include "vtkDataObject.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include <algorithm>
#include <cmath>
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkSynchronizeTimeFilter);
//------------------------------------------------------------------------------
void vtkSynchronizeTimeFilter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "RelativeTolerance: " << this->RelativeTolerance << endl;
}
//------------------------------------------------------------------------------
vtkSynchronizeTimeFilter::vtkSynchronizeTimeFilter()
{
this->SetNumberOfInputPorts(2);
this->RelativeTolerance = 0.00001;
}
//------------------------------------------------------------------------------
vtkSynchronizeTimeFilter::~vtkSynchronizeTimeFilter() = default;
//------------------------------------------------------------------------------
void vtkSynchronizeTimeFilter::SetSourceConnection(vtkAlgorithmOutput* algOutput)
{
this->SetInputConnection(1, algOutput);
}
//------------------------------------------------------------------------------
double vtkSynchronizeTimeFilter::GetInputTimeValue(double outputTimeValue)
{
double inputTimeValue = outputTimeValue;
if (outputTimeValue <= this->OutputTimeStepValues.back())
{
std::vector<double>::iterator pos = std::find(
this->OutputTimeStepValues.begin(), this->OutputTimeStepValues.end(), outputTimeValue);
if (pos != this->OutputTimeStepValues.end())
{
size_t index = std::distance(this->OutputTimeStepValues.begin(), pos);
inputTimeValue = this->InputTimeStepValues[index];
}
}
return inputTimeValue;
}
//------------------------------------------------------------------------------
double vtkSynchronizeTimeFilter::GetOutputTimeValue(double inputTimeValue)
{
double outputTimeValue = inputTimeValue;
std::vector<double>::iterator pos =
std::find(this->InputTimeStepValues.begin(), this->InputTimeStepValues.end(), inputTimeValue);
if (pos != this->InputTimeStepValues.end())
{
size_t index = std::distance(this->InputTimeStepValues.begin(), pos);
if (index < this->OutputTimeStepValues.size())
{
outputTimeValue = this->OutputTimeStepValues[index];
}
}
return outputTimeValue;
}
//------------------------------------------------------------------------------
int vtkSynchronizeTimeFilter::RequestInformation(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
this->InputTimeStepValues.clear();
this->OutputTimeStepValues.clear();
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
if (inInfo->Has(vtkStreamingDemandDrivenPipeline::TIME_STEPS()))
{
int numberOfTimeSteps = inInfo->Length(vtkStreamingDemandDrivenPipeline::TIME_STEPS());
double* values = inInfo->Get(vtkStreamingDemandDrivenPipeline::TIME_STEPS());
this->InputTimeStepValues.resize(numberOfTimeSteps);
this->OutputTimeStepValues.resize(numberOfTimeSteps);
for (int i = 0; i < numberOfTimeSteps; i++)
{
this->InputTimeStepValues[i] = values[i];
this->OutputTimeStepValues[i] = values[i];
}
// time steps for port 1 (sync time steps)
inInfo = inputVector[1]->GetInformationObject(0);
if (inInfo->Has(vtkStreamingDemandDrivenPipeline::TIME_STEPS()))
{
int numberOfOutputTimeSteps = inInfo->Length(vtkStreamingDemandDrivenPipeline::TIME_STEPS());
values = inInfo->Get(vtkStreamingDemandDrivenPipeline::TIME_STEPS());
double diffMax = this->RelativeTolerance *
std::abs(this->InputTimeStepValues[0] - this->InputTimeStepValues[numberOfTimeSteps - 1]);
for (int i = 0; i < numberOfOutputTimeSteps; i++)
{
for (size_t j = 0; j < this->OutputTimeStepValues.size(); j++)
{
if (std::abs(values[i] - this->OutputTimeStepValues[j]) < diffMax)
{
this->OutputTimeStepValues[j] = values[i];
}
}
}
}
// check to make sure we don't have any repeated time steps
for (size_t i = 0; i < this->OutputTimeStepValues.size() - 1; i++)
{
if (this->OutputTimeStepValues[i] == this->OutputTimeStepValues[i + 1])
{
vtkWarningMacro("The Synchronize Time Filter detected 2 time steps that "
<< "mapped to the same value. Either the input data has "
<< "2 time steps with identical time values or the "
<< "RelativeTolerance parameter (currently set to " << this->RelativeTolerance
<< ") is too large");
}
}
vtkInformation* outInfo = outputVector->GetInformationObject(0);
double timeRange[2] = { this->OutputTimeStepValues[0],
this->OutputTimeStepValues[numberOfTimeSteps - 1] };
outInfo->Set(vtkStreamingDemandDrivenPipeline::TIME_STEPS(), this->OutputTimeStepValues.data(),
numberOfTimeSteps);
outInfo->Set(vtkStreamingDemandDrivenPipeline::TIME_RANGE(), timeRange, 2);
}
else
{ // just in case output time steps are set by the second input
vtkInformation* outInfo = outputVector->GetInformationObject(0);
outInfo->Remove(vtkStreamingDemandDrivenPipeline::TIME_STEPS());
outInfo->Remove(vtkStreamingDemandDrivenPipeline::TIME_RANGE());
}
return 1;
}
//------------------------------------------------------------------------------
int vtkSynchronizeTimeFilter::RequestUpdateExtent(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
vtkInformation* outInfo = outputVector->GetInformationObject(0);
if (outInfo->Has(vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP()))
{
double timeValue = outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP());
double requestTimeValue = this->GetInputTimeValue(timeValue);
inputVector[0]->GetInformationObject(0)->Set(
vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP(), requestTimeValue);
}
else
{
inputVector[0]->GetInformationObject(0)->Remove(
vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP());
}
// Always remove the request for the update time step from
// the sync input since we only care about the time step values
// that it can provide and we already have that.
inputVector[1]->GetInformationObject(0)->Remove(
vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP());
return 1;
}
//------------------------------------------------------------------------------
int vtkSynchronizeTimeFilter::RequestData(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkDataObject* input = inInfo->Get(vtkDataObject::DATA_OBJECT());
vtkDataObject* output = outInfo->Get(vtkDataObject::DATA_OBJECT());
output->ShallowCopy(input);
if (input->GetInformation()->Has(vtkDataObject::DATA_TIME_STEP()))
{
double timeValue = input->GetInformation()->Get(vtkDataObject::DATA_TIME_STEP());
double outputTimeValue = this->GetOutputTimeValue(timeValue);
output->GetInformation()->Set(vtkDataObject::DATA_TIME_STEP(), outputTimeValue);
}
this->CheckAbort();
return 1;
}
VTK_ABI_NAMESPACE_END
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