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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkHDRReader.h"
#include "vtkImageData.h"
#include "vtkImageViewer.h"
#include "vtkNew.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
int TestHDRReader(int argc, char* argv[])
{
if (argc <= 1)
{
cout << "Usage: " << argv[0] << " <hdr file>" << endl;
return EXIT_FAILURE;
}
std::string filename = argv[1];
vtkNew<vtkHDRReader> reader;
// Check the image can be read
if (!reader->CanReadFile(filename.c_str()))
{
cerr << "CanReadFile failed for " << filename << "\n";
return EXIT_FAILURE;
}
reader->SetFileName(filename.c_str());
reader->UpdateInformation();
// Whole extent
const int* we = reader->GetDataExtent();
// Crop the image
const int extents[6] = { we[0] + we[1] / 5, we[1] - we[1] / 5, we[2] + we[3] / 6,
we[3] - we[3] / 6, 0, 0 };
reader->UpdateExtent(extents);
// Visualize
vtkNew<vtkImageViewer> imageViewer;
imageViewer->SetInputData(reader->GetOutput());
imageViewer->SetColorWindow(1);
imageViewer->SetColorLevel(1);
imageViewer->SetPosition(0, 100);
vtkNew<vtkRenderWindowInteractor> iren;
imageViewer->SetupInteractor(iren);
imageViewer->Render();
iren->Start();
return EXIT_SUCCESS;
}
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