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vtkInterpolatedVelocityField.cxx
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vtkInterpolatedVelocityField.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkInterpolatedVelocityField.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 "vtkInterpolatedVelocityField.h"
#include "vtkDataSet.h"
#include "vtkGenericCell.h"
#include "vtkObjectFactory.h"
//------------------------------------------------------------------------------
vtkStandardNewMacro(vtkInterpolatedVelocityField);
//------------------------------------------------------------------------------
void vtkInterpolatedVelocityField::AddDataSet(vtkDataSet* dataset)
{
if (!dataset)
{
return;
}
// insert the dataset (do NOT register the dataset to 'this')
this->DataSets->push_back(dataset);
int size = dataset->GetMaxCellSize();
if (size > this->WeightsSize)
{
this->WeightsSize = size;
delete[] this->Weights;
this->Weights = new double[size];
}
}
//------------------------------------------------------------------------------
void vtkInterpolatedVelocityField::SetLastCellId(vtkIdType c, int dataindex)
{
this->LastCellId = c;
this->LastDataSet = (*this->DataSets)[dataindex];
// if the dataset changes, then the cached cell is invalidated
// we might as well prefetch the cached cell either way
if (this->LastCellId != -1)
{
this->LastDataSet->GetCell(this->LastCellId, this->GenCell);
}
this->LastDataSetIndex = dataindex;
}
//------------------------------------------------------------------------------
int vtkInterpolatedVelocityField::FunctionValues(double* x, double* f)
{
vtkDataSet* ds;
if (!this->LastDataSet && !this->DataSets->empty())
{
ds = (*this->DataSets)[0];
this->LastDataSet = ds;
this->LastDataSetIndex = 0;
}
else
{
ds = this->LastDataSet;
}
int retVal = this->FunctionValues(ds, x, f);
if (!retVal)
{
for (this->LastDataSetIndex = 0;
this->LastDataSetIndex < static_cast<int>(this->DataSets->size());
this->LastDataSetIndex++)
{
ds = this->DataSets->operator[](this->LastDataSetIndex);
if (ds && ds->GetNumberOfPoints() > 0 && ds != this->LastDataSet)
{
this->ClearLastCellId();
retVal = this->FunctionValues(ds, x, f);
if (retVal)
{
this->LastDataSet = ds;
return retVal;
}
}
}
this->LastCellId = -1;
this->LastDataSetIndex = 0;
this->LastDataSet = (*this->DataSets)[0];
return 0;
}
return retVal;
}
//------------------------------------------------------------------------------
int vtkInterpolatedVelocityField::SnapPointOnCell(double* pOrigin, double* pSnap)
{
if (this->LastDataSet == nullptr)
{
return 0;
}
if (!this->FindAndUpdateCell(this->LastDataSet, pOrigin))
{
return 0;
}
double dist2;
this->GenCell->EvaluatePosition(
pOrigin, pSnap, this->LastSubId, this->LastPCoords, dist2, this->Weights);
return 1;
}
//------------------------------------------------------------------------------
void vtkInterpolatedVelocityField::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}