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/*=========================================================================
Program: Visualization Toolkit
Module: TestDelaunay2D.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.
=========================================================================*/
// This test was created following the bug reported by Gilles Rougeron.
// Some points were not connected in the output triangulation.
// A fix was added to vtkDelaunay2D. This test exercices the new
// functionality.
#include "vtkPolyData.h"
#include "vtkDelaunay2D.h"
#include "vtkCellArray.h"
#include "vtkShrinkPolyData.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRegressionTestImage.h"
//#define WRITE_IMAGE
#ifdef WRITE_IMAGE
#include "vtkWindowToImageFilter.h"
#include "vtkPNGWriter.h"
#endif
int TestDelaunay2D( int argc, char* argv[] )
{
vtkPoints *newPts = vtkPoints::New();
newPts->InsertNextPoint( 1.5026018771810041, 1.5026019428618222, 0.0 );
newPts->InsertNextPoint( -1.5026020085426373, 1.5026018115001829, 0.0 );
newPts->InsertNextPoint( -1.5026018353814194, -1.5026019846614038, 0.0 );
newPts->InsertNextPoint( 1.5026019189805875, -1.5026019010622396, 0.0 );
newPts->InsertNextPoint( 5.2149123972752491, 5.2149126252263240, 0.0 );
newPts->InsertNextPoint( -5.2149128531773883, 5.2149121693241645, 0.0 );
newPts->InsertNextPoint( -5.2149122522061022, -5.2149127702954603, 0.0 );
newPts->InsertNextPoint( 5.2149125423443916, -5.2149124801571842, 0.0 );
newPts->InsertNextPoint( 8.9272229173694946, 8.9272233075908254, 0.0 );
newPts->InsertNextPoint( -8.9272236978121402, 8.9272225271481460, 0.0 );
newPts->InsertNextPoint( -8.9272226690307868, -8.9272235559295172, 0.0 );
newPts->InsertNextPoint( 8.9272231657081953, -8.9272230592521282, 0.0 );
newPts->InsertNextPoint( 12.639533437463740, 12.639533989955329, 0.0 );
newPts->InsertNextPoint( -12.639534542446890, 12.639532884972127, 0.0 );
newPts->InsertNextPoint( -12.639533085855469, -12.639534341563573, 0.0 );
newPts->InsertNextPoint( 12.639533789072001, -12.639533638347073, 0.0 );
vtkIdType inNumPts = newPts->GetNumberOfPoints();
cout << "input numPts= " << inNumPts << endl;
vtkPolyData *pointCloud = vtkPolyData::New();
pointCloud->SetPoints(newPts);
newPts->Delete();
vtkDelaunay2D *delaunay2D = vtkDelaunay2D::New();
delaunay2D->SetInput( pointCloud );
pointCloud->Delete();
delaunay2D->Update();
vtkPolyData *triangulation = delaunay2D->GetOutput();
vtkIdType outNumPts = triangulation->GetNumberOfPoints();
vtkIdType outNumCells = triangulation->GetNumberOfCells();
vtkIdType outNumPolys = triangulation->GetNumberOfPolys();
vtkIdType outNumLines = triangulation->GetNumberOfLines();
vtkIdType outNumVerts = triangulation->GetNumberOfVerts();
cout << "output numPts= " << outNumPts << endl;
cout << "output numCells= " << outNumCells << endl;
cout << "output numPolys= " << outNumPolys << endl;
cout << "output numLines= " << outNumLines << endl;
cout << "output numVerts= " << outNumVerts << endl;
if( outNumPts != inNumPts )
{
cout << "ERROR: output numPts " << outNumPts
<< " doesn't match input numPts=" << inNumPts << endl;
delaunay2D->Delete();
return EXIT_FAILURE;
}
if( !outNumCells )
{
cout << "ERROR: output numCells= " << outNumCells << endl;
delaunay2D->Delete();
return EXIT_FAILURE;
}
if( outNumPolys != outNumCells )
{
cout << "ERROR: output numPolys= " << outNumPolys
<< " doesn't match output numCells= " << outNumCells << endl;
delaunay2D->Delete();
return EXIT_FAILURE;
}
if( outNumLines )
{
cout << "ERROR: output numLines= " << outNumLines << endl;
delaunay2D->Delete();
return EXIT_FAILURE;
}
if( outNumVerts )
{
cout << "ERROR: output numVerts= " << outNumVerts << endl;
delaunay2D->Delete();
return EXIT_FAILURE;
}
// check that every point is connected
triangulation->BuildLinks();
vtkIdList *cellIds = vtkIdList::New();
vtkIdType numUnconnectedPts = 0;
for(vtkIdType ptId=0; ptId<outNumPts; ptId++)
{
triangulation->GetPointCells(ptId,cellIds);
if( !cellIds->GetNumberOfIds() )
{
numUnconnectedPts++;
}
}
cellIds->Delete();
cout << "Triangulation has " << numUnconnectedPts
<< " unconnected points" << endl;
if( numUnconnectedPts )
{
cout << "ERROR: Triangulation has " << numUnconnectedPts
<< " unconnected points" << endl;
delaunay2D->Delete();
return EXIT_FAILURE;
}
vtkShrinkPolyData *shrink = vtkShrinkPolyData::New();
shrink->SetInputConnection( delaunay2D->GetOutputPort() );
vtkPolyDataMapper *mapper = vtkPolyDataMapper::New();
mapper->SetInputConnection( shrink->GetOutputPort() );
vtkActor *actor = vtkActor::New();
actor->SetMapper(mapper);
vtkRenderer *ren = vtkRenderer::New();
ren->AddActor(actor);
vtkRenderWindow *renWin = vtkRenderWindow::New();
renWin->AddRenderer(ren);
vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
iren->SetRenderWindow(renWin);
iren->Initialize();
renWin->Render();
#ifdef WRITE_IMAGE
vtkWindowToImageFilter *windowToImage = vtkWindowToImageFilter::New();
windowToImage->SetInput( renWin );
vtkPNGWriter *PNGWriter = vtkPNGWriter::New();
PNGWriter->SetInputConnection( windowToImage->GetOutputPort() );
windowToImage->Delete();
PNGWriter->SetFileName("TestDelaunay2D.png");
PNGWriter->Write();
PNGWriter->Delete();
#endif
int retVal = vtkRegressionTestImage( renWin );
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
// Clean up
delaunay2D->Delete();
shrink->Delete();
mapper->Delete();
actor->Delete();
ren->Delete();
renWin->Delete();
iren->Delete();
return !retVal;
}
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