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/*=========================================================================
Program: Visualization Toolkit
Module: TestStaticCellLinks.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 "vtkExtractGeometry.h"
#include "vtkImageData.h"
#include "vtkPolyData.h"
#include "vtkSmartPointer.h"
#include "vtkSphere.h"
#include "vtkSphereSource.h"
#include "vtkStaticCellLinks.h"
#include "vtkStaticCellLinksTemplate.h"
#include "vtkTimerLog.h"
#include "vtkUnstructuredGrid.h"
// Test the building of static cell links in both unstructured and structured
// grids.
int TestStaticCellLinks(int, char*[])
{
int dataDim = 3;
// First create a volume which will be converted to an unstructured grid
vtkSmartPointer<vtkImageData> volume = vtkSmartPointer<vtkImageData>::New();
volume->SetDimensions(dataDim, dataDim, dataDim);
volume->AllocateScalars(VTK_INT, 1);
//----------------------------------------------------------------------------
// Build links on volume
vtkNew<vtkStaticCellLinks> imlinks;
imlinks->SetDataSet(volume);
imlinks->BuildLinks();
vtkIdType ncells = imlinks->GetNumberOfCells(0);
const vtkIdType* imcells = imlinks->GetCells(0);
cout << "Volume:\n";
cout << " Lower Left corner (numCells, cells): " << ncells << " (";
for (int i = 0; i < ncells; ++i)
{
cout << imcells[i];
if (i < (ncells - 1))
cout << ",";
}
cout << ")\n";
if (ncells != 1 || imcells[0] != 0)
{
return EXIT_FAILURE;
}
ncells = imlinks->GetNumberOfCells(13);
imcells = imlinks->GetCells(13);
cout << " Center (ncells, cells): " << ncells << " (";
for (int i = 0; i < ncells; ++i)
{
cout << imcells[i];
if (i < (ncells - 1))
cout << ",";
}
cout << ")\n";
if (ncells != 8)
{
return EXIT_FAILURE;
}
ncells = imlinks->GetNumberOfCells(26);
imcells = imlinks->GetCells(26);
cout << " Upper Right corner (ncells, cells): " << ncells << " (";
for (int i = 0; i < ncells; ++i)
{
cout << imcells[i];
if (i < (ncells - 1))
cout << ",";
}
cout << ")\n";
if (ncells != 1 || imcells[0] != 7)
{
return EXIT_FAILURE;
}
//----------------------------------------------------------------------------
// Unstructured grid
vtkSmartPointer<vtkSphere> sphere = vtkSmartPointer<vtkSphere>::New();
sphere->SetCenter(0, 0, 0);
sphere->SetRadius(100000);
// Side effect of this filter is conversion of volume to unstructured grid
vtkSmartPointer<vtkExtractGeometry> extract = vtkSmartPointer<vtkExtractGeometry>::New();
extract->SetInputData(volume);
extract->SetImplicitFunction(sphere);
extract->Update();
// Grab the output, build links on unstructured grid
vtkSmartPointer<vtkUnstructuredGrid> ugrid = extract->GetOutput();
vtkStaticCellLinksTemplate<int> slinks;
slinks.BuildLinks(ugrid);
int numCells = slinks.GetNumberOfCells(0);
const int* cells = slinks.GetCells(0);
cout << "\nUnstructured Grid:\n";
cout << " Lower Left corner (numCells, cells): " << numCells << " (";
for (int i = 0; i < numCells; ++i)
{
cout << cells[i];
if (i < (numCells - 1))
cout << ",";
}
cout << ")\n";
if (numCells != 1 || cells[0] != 0)
{
return EXIT_FAILURE;
}
numCells = slinks.GetNumberOfCells(13);
cells = slinks.GetCells(13);
cout << " Center (numCells, cells): " << numCells << " (";
for (int i = 0; i < numCells; ++i)
{
cout << cells[i];
if (i < (numCells - 1))
cout << ",";
}
cout << ")\n";
if (numCells != 8)
{
return EXIT_FAILURE;
}
numCells = slinks.GetNumberOfCells(26);
cells = slinks.GetCells(26);
cout << " Upper Right corner (numCells, cells): " << numCells << " (";
for (int i = 0; i < numCells; ++i)
{
cout << cells[i];
if (i < (numCells - 1))
cout << ",";
}
cout << ")\n";
if (numCells != 1 || cells[0] != 7)
{
return EXIT_FAILURE;
}
//----------------------------------------------------------------------------
// Polydata
vtkSmartPointer<vtkSphereSource> ss = vtkSmartPointer<vtkSphereSource>::New();
ss->SetThetaResolution(12);
ss->SetPhiResolution(10);
ss->Update();
vtkSmartPointer<vtkPolyData> pdata = ss->GetOutput();
slinks.Initialize(); // reuse
slinks.BuildLinks(pdata);
// The first point is at the pole
numCells = slinks.GetNumberOfCells(0);
cells = slinks.GetCells(0);
cout << "\nPolydata:\n";
cout << " Pole: (numCells, cells): " << numCells << " (";
for (int i = 0; i < numCells; ++i)
{
cout << cells[i];
if (i < (numCells - 1))
cout << ",";
}
cout << ")\n";
if (numCells != 12)
{
return EXIT_FAILURE;
}
// The next point is at near the equator
numCells = slinks.GetNumberOfCells(5);
cells = slinks.GetCells(5);
cout << " Equator: (numCells, cells): " << numCells << " (";
for (int i = 0; i < numCells; ++i)
{
cout << cells[i];
if (i < (numCells - 1))
cout << ",";
}
cout << ")\n";
if (numCells != 6)
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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