VTK/Examples/Cxx/IO/PNGReader

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VTK Examples Baseline IO TestReadWritePNG.png

This example demonstrates how to read a PNG image file.

PNGReader.cxx

#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkPNGReader.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
 
int main(int argc, char* argv[])
{
  // Verify input arguments
  if ( argc < 2 )
    {
    std::cout << "Usage: " << argv[0]
              << " Filename(.png)" << std::endl;
    return EXIT_FAILURE;
    }
 
  // Read the image
  vtkSmartPointer<vtkPNGReader> reader =
    vtkSmartPointer<vtkPNGReader>::New();
  reader->SetFileName(argv[1]);
 
  // Visualize
  vtkSmartPointer<vtkImageViewer2> imageViewer =
    vtkSmartPointer<vtkImageViewer2>::New();
  imageViewer->SetInputConnection(reader->GetOutputPort());
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  imageViewer->SetupInteractor(renderWindowInteractor);
  imageViewer->Render();
  imageViewer->GetRenderer()->ResetCamera();
  imageViewer->Render();
 
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)
 
PROJECT(PNGReader)
 
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
 
if (APPLE)
  add_executable(PNGReader MACOSX_BUNDLE PNGReader.cxx)
else()
  add_executable(PNGReader PNGReader.cxx)
endif()
 
if(VTK_LIBRARIES)
  target_link_libraries(PNGReader ${VTK_LIBRARIES})
else()
  target_link_libraries(PNGReader vtkHybrid )
endif()
Retrieved from "http://batchmake.org/Wiki/VTK/Examples/Cxx/IO/PNGReader"
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