WriteVTP

Repository source: WriteVTP

Description¶

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

Other languages

See (Java), (CSharp)

Question

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Code¶

WriteVTP.cxx

#include <vtkCellArray.h>
#include <vtkNew.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkXMLPolyDataWriter.h>

int main(int, char*[])
{
  // Create 10 points.
  vtkNew<vtkPoints> points;

  for (unsigned int i = 0; i < 10; ++i)
  {
    points->InsertNextPoint(i, i, i);
  }

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

  // Write the file
  vtkNew<vtkXMLPolyDataWriter> writer;
  writer->SetFileName("test.vtp");
  writer->SetInputData(polydata);

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

  writer->Write();

  return EXIT_SUCCESS;
}

CMakeLists.txt¶

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(WriteVTP)

find_package(VTK COMPONENTS 
  CommonCore
  CommonDataModel
  IOXML
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "WriteVTP: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(WriteVTP MACOSX_BUNDLE WriteVTP.cxx )
  target_link_libraries(WriteVTP PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS WriteVTP
  MODULES ${VTK_LIBRARIES}
)

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

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