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/*=========================================================================
Program: Visualization Toolkit
Module: TestImageToAMR.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.
=========================================================================*/
// Test vtkImageToAMR filter.
#include "vtkPointData.h"
#include "vtkCellData.h"
#include "vtkImageToAMR.h"
#include "vtkRTAnalyticSource.h"
#include "vtkNew.h"
#include "vtkDataObject.h"
#include "vtkOverlappingAMR.h"
#include "vtkAMRBox.h"
#include "vtkImageData.h"
#include "vtkUniformGrid.h"
#include "vtkIdFilter.h"
#include "vtkVector.h"
#include "vtkIdTypeArray.h"
#include <vector>
#define VTK_SUCCESS 0
#define VTK_FAILURE 1
namespace
{
//
int ComputeNumCells(vtkOverlappingAMR* amr)
{
int n(0);
for(unsigned int level=0; level<amr->GetNumberOfLevels();level++)
{
int numDataSets = amr->GetNumberOfDataSets(level);
for(int i=0; i<numDataSets; i++)
{
vtkUniformGrid* grid = amr->GetDataSet(level,i);
int numCells = grid->GetNumberOfCells();
for(int cellId =0; cellId<numCells; cellId++)
{
n+= grid->IsCellVisible(cellId)? 1 :0;
}
}
}
return n;
}
vtkIdType FindCell( vtkImageData* image, double point[3])
{
double pcoords[3]; int subid=0;
return image->vtkImageData::FindCell( point, NULL, -1, 0.1, subid, pcoords, NULL);
}
};
int TestImageToAMR(int, char *[])
{
vtkNew<vtkRTAnalyticSource> imageSource;
imageSource->SetWholeExtent(0, 0, -128, 128, -128, 128);
vtkNew<vtkIdFilter> idFilter;
idFilter->SetInputConnection(imageSource->GetOutputPort());
vtkNew<vtkImageToAMR> amrConverter;
amrConverter->SetInputConnection(idFilter->GetOutputPort());
amrConverter->SetNumberOfLevels(4);
std::vector<vtkVector3d> samples;
for(int i=-118; i<122; i+=10)
{
samples.push_back( vtkVector3d(0.0, (double)i, (double) i));
}
for(unsigned int numLevels=1; numLevels<=4; numLevels++)
{
for(int maxBlocks=10; maxBlocks<=50; maxBlocks+=10)
{
amrConverter->SetNumberOfLevels(numLevels);
amrConverter->SetMaximumNumberOfBlocks(maxBlocks);
amrConverter->Update();
vtkImageData* image = vtkImageData::SafeDownCast(idFilter->GetOutputDataObject(0));
vtkOverlappingAMR* amr = vtkOverlappingAMR::SafeDownCast(amrConverter->GetOutputDataObject(0));
amr->Audit();
// cout<<amr->GetTotalNumberOfBlocks()<<" "<<maxBlocks<<endl;
if(amr->GetNumberOfLevels()!=numLevels)
{
return VTK_FAILURE;
}
if(maxBlocks< static_cast<int>(amr->GetTotalNumberOfBlocks()))
{
return VTK_FAILURE;
}
if(ComputeNumCells(amr)!=image->GetNumberOfCells())
{
return VTK_FAILURE;
}
vtkIdTypeArray* cd = vtkArrayDownCast<vtkIdTypeArray>(image->GetCellData()->GetArray("vtkIdFilter_Ids"));
assert(cd);
for(std::vector<vtkVector3d>::iterator itr=samples.begin(); itr!=samples.end();itr++)
{
double* x =(*itr).GetData();
vtkIdType cellId = FindCell(image,x);
vtkIdType value = cd->GetValue(cellId);
assert(cellId==value);
unsigned int level,id;
if(amr->FindGrid(x,level,id))
{
vtkUniformGrid* grid =amr->GetDataSet(level,id);
vtkIdTypeArray* cd1 = vtkArrayDownCast<vtkIdTypeArray>(grid->GetCellData()->GetArray("vtkIdFilter_Ids"));
vtkIdType cellId1 = FindCell(grid,x);
vtkIdType value1 = cd1->GetValue(cellId1);
if(value1!=value)
{
return VTK_FAILURE;
}
}
else
{
return VTK_FAILURE;
}
}
}
}
return VTK_SUCCESS;
}
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