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/*=========================================================================
Program: Visualization Toolkit
Module: TestBMPReader.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.
=========================================================================*/
// .NAME Test of vtkBMPReader
// .SECTION Description
//
#include "vtkBMPReader.h"
#include "vtkImageData.h"
#include "vtkImageMapToColors.h"
#include "vtkImageViewer.h"
#include "vtkLookupTable.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSmartPointer.h"
int TestBMPReader(int argc, char* argv[])
{
if (argc <= 1)
{
cout << "Usage: " << argv[0] << " <bmp file>" << endl;
return EXIT_FAILURE;
}
std::string filename = argv[1];
vtkSmartPointer<vtkBMPReader> BMPReader = vtkSmartPointer<vtkBMPReader>::New();
// Check the image can be read
if (!BMPReader->CanReadFile(filename.c_str()))
{
cerr << "CanReadFile failed for " << filename << "\n";
return EXIT_FAILURE;
}
// Read the input image
BMPReader->SetFileName(filename.c_str());
BMPReader->Update();
// Read and display the image properties
int depth = BMPReader->GetDepth();
cout << "depth: " << depth << endl;
const char* fileExtensions = BMPReader->GetFileExtensions();
cout << "fileExtensions: " << fileExtensions << endl;
const char* descriptiveName = BMPReader->GetDescriptiveName();
cout << "descriptiveName: " << *descriptiveName << endl;
vtkSmartPointer<vtkLookupTable> lookupTable = BMPReader->GetLookupTable();
lookupTable->Print(cout);
const unsigned char* colors = BMPReader->GetColors();
unsigned char const* first = reinterpret_cast<unsigned char*>(&colors);
unsigned char const* last = reinterpret_cast<unsigned char*>(&colors + 1);
cout << "colors: ";
while (first != last)
{
cout << (int)*first << ' ';
++first;
}
cout << std::endl;
int allow8BitBMP = 1;
BMPReader->SetAllow8BitBMP(allow8BitBMP);
cout << "allow8BitBMP: " << BMPReader->GetAllow8BitBMP() << endl;
// Visualize
vtkSmartPointer<vtkImageMapToColors> map = vtkSmartPointer<vtkImageMapToColors>::New();
map->SetInputConnection(BMPReader->GetOutputPort());
map->SetLookupTable(BMPReader->GetLookupTable());
map->SetOutputFormatToRGB();
vtkSmartPointer<vtkImageViewer> imageViewer = vtkSmartPointer<vtkImageViewer>::New();
imageViewer->SetInputConnection(map->GetOutputPort());
imageViewer->SetColorWindow(256);
imageViewer->SetColorLevel(127.5);
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
imageViewer->SetupInteractor(renderWindowInteractor);
imageViewer->Render();
vtkRenderWindow* renWin = imageViewer->GetRenderWindow();
int retVal = vtkRegressionTestImage(renWin);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
renderWindowInteractor->Start();
}
return !retVal;
}
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