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/*=========================================================================
Program: Visualization Toolkit
Module: TestXMLGhostCellsImport.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 converting from a vtkGhostLevels to vtkGhostType
// see http://www.kitware.com/blog/home/post/856
// Ghost and Blanking (Visibility) Changes
#include "vtkActor.h"
#include "vtkCellData.h"
#include "vtkCellType.h"
#include "vtkDataSetSurfaceFilter.h"
#include "vtkGeometryFilter.h"
#include "vtkNew.h"
#include "vtkPoints.h"
#include "vtkPolyDataMapper.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSmartPointer.h"
#include "vtkTesting.h"
#include "vtkUnsignedCharArray.h"
#include "vtkUnstructuredGrid.h"
#include "vtkXMLUnstructuredGridReader.h"
#include "vtkXMLUnstructuredGridWriter.h"
// ghost_cells.vtu was created using this function
vtkSmartPointer<vtkUnstructuredGrid> CreateThreeTetra()
{
vtkNew<vtkPoints> points;
points->InsertPoint(0, 0, 0, 0);
points->InsertPoint(1, 1, 0, 0);
points->InsertPoint(2, 0.5, 1, 0);
points->InsertPoint(3, 0.5, 0.5, 1);
points->InsertPoint(4, 0.5, -1, 0);
points->InsertPoint(5, 0.5, -0.5, 1);
vtkIdType v[3][4] = {{0,1,2,3}, {0,4,1,5}, {5,3,1,0}};
vtkSmartPointer<vtkUnstructuredGrid> grid =
vtkSmartPointer<vtkUnstructuredGrid>::New();
grid->InsertNextCell(VTK_TETRA, 4, v[0]);
grid->InsertNextCell(VTK_TETRA, 4, v[1]);
grid->InsertNextCell(VTK_TETRA, 4, v[2]);
grid->SetPoints(points.GetPointer());
vtkNew<vtkUnsignedCharArray> ghosts;
ghosts->InsertNextValue(0);
ghosts->InsertNextValue(1);
ghosts->InsertNextValue(2);
ghosts->SetName("vtkGhostLevels");
grid->GetCellData()->AddArray(ghosts.GetPointer());
return grid;
}
void WriteThreeTetra()
{
vtkSmartPointer<vtkUnstructuredGrid> grid = CreateThreeTetra();
vtkNew<vtkXMLUnstructuredGridWriter> writer;
writer->SetInputData(grid);
writer->SetFileName("ghost_cells.vtu");
writer->Write();
}
int TestXMLGhostCellsImport(int argc, char *argv[])
{
vtkNew<vtkTesting> testing;
testing->AddArguments(argc, argv);
// this was used to generate ghost_cells.vtu
//WriteThreeTetra();
std::string filename = testing->GetDataRoot();
filename += "/Data/ghost_cells.vtu";
vtkNew<vtkXMLUnstructuredGridReader> reader;
reader->SetFileName(filename.c_str());
// this filter removes the ghost cells
vtkNew<vtkGeometryFilter> surfaces;
surfaces->SetInputConnection(reader->GetOutputPort());
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputConnection(surfaces->GetOutputPort());
vtkNew<vtkActor> actor;
actor->SetMapper(mapper.GetPointer());
vtkNew<vtkRenderer> renderer;
renderer->AddActor(actor.GetPointer());
vtkNew<vtkRenderWindow> renwin;
renwin->AddRenderer(renderer.GetPointer());
renwin->SetSize(300, 300);
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renwin.GetPointer());
iren->Initialize();
renwin->Render();
int retVal = vtkRegressionTestImage( renwin.GetPointer() );
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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