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StructuredPointsReader

vtk-examples/Cxx/IO/StructuredPointsReader

Description

An example input file can be found at /Data/ironProt.vtk.

Other languages

See (Java)

Question

If you have a question about this example, please use the VTK Discourse Forum

Code

StructuredPointsReader.cxx

#include <vtkImageDataGeometryFilter.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkStructuredPointsReader.h>

int main(int argc, char* argv[])
{
  vtkNew<vtkNamedColors> colors;

  // Verify input arguments
  if (argc != 2)
  {
    std::cout << "Usage: " << argv[0]
              << " Filename(.vtk) e.g. StructuredPoints.vtk" << std::endl;
    return EXIT_FAILURE;
  }

  std::string inputFilename = argv[1];

  // Read the file
  vtkNew<vtkStructuredPointsReader> reader;
  reader->SetFileName(inputFilename.c_str());
  reader->Update();

  vtkNew<vtkImageDataGeometryFilter> geometryFilter;
  geometryFilter->SetInputConnection(reader->GetOutputPort());
  geometryFilter->Update();

  // Visualize
  vtkNew<vtkPolyDataMapper> mapper;
  mapper->SetInputConnection(geometryFilter->GetOutputPort());

  vtkNew<vtkActor> actor;
  actor->SetMapper(mapper);

  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->AddRenderer(renderer);
  renderWindow->SetWindowName("StructuredPointsReader");

  vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
  renderWindowInteractor->SetRenderWindow(renderWindow);

  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("SlateGray").GetData());

  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(StructuredPointsReader)

find_package(VTK COMPONENTS 
  CommonColor
  CommonCore
  FiltersGeometry
  IOLegacy
  InteractionStyle
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "StructuredPointsReader: 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(StructuredPointsReader MACOSX_BUNDLE StructuredPointsReader.cxx )
  target_link_libraries(StructuredPointsReader PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS StructuredPointsReader
  MODULES ${VTK_LIBRARIES}
)

Download and Build StructuredPointsReader

Click here to download StructuredPointsReader and its CMakeLists.txt file. Once the tarball StructuredPointsReader.tar has been downloaded and extracted,

cd StructuredPointsReader/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:

./StructuredPointsReader

WINDOWS USERS

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