VTK/Examples/Cxx/IO/ReadPolyData

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VTK Examples Baseline IO TestReadPolyData.png

This example reads a polygonal data (.vtp) file. An example data set can be found at VTKData/Data/SyntheticPolyline.vtp

ReadPolyData.cxx

#include <vtkXMLPolyDataReader.h>
#include <vtkSmartPointer.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
 
int main ( int argc, char *argv[] )
{
  // Parse command line arguments
  if(argc != 2)
    {
    std::cerr << "Usage: " << argv[0]
              << " Filename(.vtp)" << std::endl;
    return EXIT_FAILURE;
    }
 
  std::string filename = argv[1];
 
  // Read all the data from the file
  vtkSmartPointer<vtkXMLPolyDataReader> reader =
    vtkSmartPointer<vtkXMLPolyDataReader>::New();
  reader->SetFileName(filename.c_str());
  reader->Update();
 
  // Visualize
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(reader->GetOutputPort());
 
  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
 
  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);
 
  renderer->AddActor(actor);
  renderer->SetBackground(.3, .6, .3); // Background color green
 
  renderWindow->Render();
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
 
PROJECT(ReadPolyData)
 
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
 
if (APPLE)
  add_executable(ReadPolyData MACOSX_BUNDLE ReadPolyData.cxx)
else()
  add_executable(ReadPolyData ReadPolyData.cxx)
endif()
 
if(VTK_LIBRARIES)
  target_link_libraries(ReadPolyData ${VTK_LIBRARIES})
else()
  target_link_libraries(ReadPolyData vtkHybrid )
endif()
Retrieved from "http://www.vtk.org/Wiki/VTK/Examples/Cxx/IO/ReadPolyData"
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