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TestImageThresholdConnectivity.cxx
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TestImageThresholdConnectivity.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: TestImageThresholdConnectivity.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 the vtkImageThresholdConnectivity class
//
// The command line arguments are:
// -I => run in interactive mode
#include "vtkCamera.h"
#include "vtkImageData.h"
#include "vtkImageProperty.h"
#include "vtkImageReader2.h"
#include "vtkImageSlice.h"
#include "vtkImageSliceMapper.h"
#include "vtkImageThresholdConnectivity.h"
#include "vtkInteractorStyleImage.h"
#include "vtkPoints.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSmartPointer.h"
#include "vtkTestUtilities.h"
int TestImageThresholdConnectivity(int argc, char *argv[])
{
vtkSmartPointer<vtkRenderWindowInteractor> iren =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkInteractorStyleImage> style =
vtkSmartPointer<vtkInteractorStyleImage>::New();
style->SetInteractionModeToImageSlicing();
vtkSmartPointer<vtkRenderWindow> renWin =
vtkSmartPointer<vtkRenderWindow>::New();
iren->SetRenderWindow(renWin);
iren->SetInteractorStyle(style);
char* fname =
vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/headsq/quarter");
vtkSmartPointer<vtkImageReader2> reader =
vtkSmartPointer<vtkImageReader2>::New();
reader->SetDataByteOrderToLittleEndian();
reader->SetDataExtent(0, 63, 0, 63, 2, 4);
reader->SetDataSpacing(3.2, 3.2, 1.5);
reader->SetFilePrefix(fname);
delete [] fname;
vtkSmartPointer<vtkPoints> seeds =
vtkSmartPointer<vtkPoints>::New();
seeds->InsertNextPoint(1, 1, 5.25);
seeds->InsertNextPoint(100.8, 100.8, 5.25);
for (int i = 0; i < 12; i++)
{
int j = i % 4;
int k = i / 4;
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkCamera *camera = renderer->GetActiveCamera();
renderer->SetBackground(0.0, 0.0, 0.0);
renderer->SetViewport(k/3.0, j/4.0, (k + 1)/3.0, (j + 1)/4.0);
renWin->AddRenderer(renderer);
vtkSmartPointer<vtkImageThresholdConnectivity> connectivity =
vtkSmartPointer<vtkImageThresholdConnectivity>::New();
connectivity->SetInputConnection(reader->GetOutputPort());
connectivity->SetSeedPoints(seeds);
connectivity->SetInValue(2000);
connectivity->SetOutValue(0);
connectivity->SetReplaceIn((j & 2) == 0);
connectivity->SetReplaceOut((j & 1) == 0);
if (k == 0)
{
connectivity->ThresholdByLower(800);
}
else if (k == 1)
{
connectivity->ThresholdByUpper(1200);
}
else
{
connectivity->ThresholdBetween(800, 1200);
}
// test a previous bug where OutputExtent != InputExtent cause a crash.
int extent[6] = { 0, 63, 0, 63, 3, 3 };
connectivity->UpdateExtent(extent);
vtkSmartPointer<vtkImageSliceMapper> imageMapper =
vtkSmartPointer<vtkImageSliceMapper>::New();
imageMapper->SetInputConnection(connectivity->GetOutputPort());
imageMapper->BorderOn();
imageMapper->SliceFacesCameraOn();
imageMapper->SliceAtFocalPointOn();
double point[3] = { 100.8, 100.8, 5.25 };
camera->SetFocalPoint(point);
point[2] += 500.0;
camera->SetPosition(point);
camera->SetViewUp(0.0, 1.0, 0.0);
camera->ParallelProjectionOn();
camera->SetParallelScale(3.2*32);
vtkSmartPointer<vtkImageSlice> image =
vtkSmartPointer<vtkImageSlice>::New();
image->SetMapper(imageMapper);
image->GetProperty()->SetColorWindow(2000);
image->GetProperty()->SetColorLevel(1000);
renderer->AddViewProp(image);
}
renWin->SetSize(192, 256);
iren->Initialize();
renWin->Render();
iren->Start();
return EXIT_SUCCESS;
}