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/*=========================================================================
Program: Visualization Toolkit
Module: TestParticleTracers.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 "vtkRTAnalyticSource.h"
#include "vtkNew.h"
#include "vtkImageGradient.h"
#include "vtkImageData.h"
#include "vtkStreamTracer.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkPointData.h"
#include "vtkSmartPointer.h"
#include "vtkDoubleArray.h"
#include <cassert>
int TestFieldNames(int, char*[])
{
//create a multiblock data set of two images
//with touching x extents so stream traces can
//go from one to the other
vtkNew<vtkRTAnalyticSource> source;
source->SetWholeExtent(-10,0,-10,10,-10,10);
vtkNew<vtkImageGradient> gradient;
gradient->SetDimensionality(3);
gradient->SetInputConnection(source->GetOutputPort());
gradient->Update();
vtkSmartPointer<vtkImageData> image0 = vtkSmartPointer<vtkImageData>::New();
image0->DeepCopy(vtkImageData::SafeDownCast(gradient->GetOutputDataObject(0)));
image0->GetPointData()->SetActiveVectors("RTDataGradient");
source->SetWholeExtent(0,10,-10,10,-10,10);
gradient->Update();
vtkSmartPointer<vtkImageData> image1 = vtkSmartPointer<vtkImageData>::New();
image1->DeepCopy(vtkImageData::SafeDownCast(gradient->GetOutputDataObject(0)));
vtkIdType numPts = image0->GetNumberOfPoints();
vtkSmartPointer<vtkDoubleArray> arr0 =vtkSmartPointer<vtkDoubleArray>::New();
arr0->Allocate(numPts);
arr0->SetNumberOfComponents(1);
arr0->SetNumberOfTuples(image0->GetNumberOfPoints());
for(vtkIdType idx=0; idx<numPts; idx++)
{
arr0->SetTuple1(idx, 1.0);
}
arr0->SetName("array 0");
image0->GetPointData()->AddArray(arr0);
vtkSmartPointer<vtkDoubleArray> arr1 =vtkSmartPointer<vtkDoubleArray>::New();
arr1->Allocate(numPts);
arr1->SetName("array 1");
for(vtkIdType idx=0; idx<numPts; idx++)
{
arr1->SetTuple1(idx, 2.0);
}
image1->GetPointData()->AddArray(arr1);
vtkNew<vtkMultiBlockDataSet> dataSets;
dataSets->SetNumberOfBlocks( 2 );
dataSets->SetBlock( 0, image0 );
dataSets->SetBlock( 1, image1 );
//create one seed
vtkNew<vtkPolyData> seeds;
vtkNew<vtkPoints> seedPoints;
seedPoints->InsertNextPoint(-4.0,0,0);
seeds->SetPoints(seedPoints.GetPointer());
//perform the tracing and watch for warning
vtkNew<vtkStreamTracer> tracer;
tracer->SetSourceData(seeds.GetPointer());
tracer->SetInputData(dataSets.GetPointer());
tracer->SetMaximumPropagation(20.0);
//run the tracing
tracer->Update();
//verify results
vtkPolyData* trace = vtkPolyData::SafeDownCast(tracer->GetOutputDataObject(0));
if( trace->GetPointData()->GetArray("array 0")!=NULL
|| trace->GetPointData()->GetArray("array 1")!=NULL
|| trace->GetPointData()->GetArray("RTData")==NULL
|| trace->GetNumberOfPoints()==0)
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
int TestStreamTracer(int n, char* a[])
{
int numFailures(0);
numFailures += TestFieldNames(n,a);
return numFailures;
}
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