VTK/Examples/Cxx/IO/WriteVTP

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In this example, we add 10 points to a polygonal data (polydata) object and write the result to a VTP file.

WriteVTP.cxx

#include <vtkVersion.h>
#include <vtkCellArray.h>
#include <vtkPoints.h>
#include <vtkXMLPolyDataWriter.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>

int main ( int, char *[] )
{
  // Create 10 points.
  vtkSmartPointer<vtkPoints> points = 
    vtkSmartPointer<vtkPoints>::New();
  
  for ( unsigned int i = 0; i < 10; ++i )
    {
    points->InsertNextPoint ( i, i, i );
    }

  // Create a polydata object and add the points to it.
  vtkSmartPointer<vtkPolyData> polydata = 
    vtkSmartPointer<vtkPolyData>::New();
  polydata->SetPoints(points);

  // Write the file
  vtkSmartPointer<vtkXMLPolyDataWriter> writer =  
    vtkSmartPointer<vtkXMLPolyDataWriter>::New();
  writer->SetFileName("test.vtp");
#if VTK_MAJOR_VERSION <= 5
  writer->SetInput(polydata);
#else
  writer->SetInputData(polydata);
#endif

  // Optional - set the mode. The default is binary.
  //writer->SetDataModeToBinary();
  //writer->SetDataModeToAscii();

  writer->Write();

  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(WriteVTP)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(WriteVTP MACOSX_BUNDLE WriteVTP.cxx)

if(VTK_LIBRARIES)
  target_link_libraries(WriteVTP ${VTK_LIBRARIES})
else()
  target_link_libraries(WriteVTP vtkHybrid vtkWidgets)
endif()

Download and Build WriteVTP

Click here to download WriteVTP. and its CMakeLists.txt file.

Once the tarball WriteVTP.tar has been downloaded and extracted,

cd WriteVTP/build 
  • If VTK is installed:
cmake ..
  • If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./WriteVTP

WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.