VRMLImporter

VTKEx/Cxx/IO/VRMLImporter

Description¶

This example loads a wrl file and displays it on the screen. An example file is here.

Code¶

VRMLImporter.cxx

#include <vtkNamedColors.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>
#include <vtkVRMLImporter.h>

int main(int argc, char* argv[])
{
  if (argc < 2)
  {
    std::cout << "Required arguments: Filename" << std::endl;
    return EXIT_FAILURE;
  }

  std::string filename = argv[1];
  std::cout << "Reading " << filename << std::endl;

  auto colors = vtkSmartPointer<vtkNamedColors>::New();

  auto renderer = vtkSmartPointer<vtkRenderer>::New();
  auto renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);

  auto renderWindowInteractor =
      vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  // VRML Import
  auto importer = vtkSmartPointer<vtkVRMLImporter>::New();
  importer->SetFileName(filename.c_str());
  importer->SetRenderWindow(renderWindow);
  importer->Update();

  auto actors = renderer->GetActors();
  std::cout << "There are " << actors->GetNumberOfItems() << " actors"
            << std::endl;

  renderer->SetBackground(colors->GetColor3d("Burlywood").GetData());
  renderWindow->SetSize(512, 512);
  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt¶

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(VRMLImporter)

find_package(VTK COMPONENTS 
  vtkCommonColor
  vtkCommonCore
  vtkIOImport
  vtkInteractionStyle
  vtkRenderingContextOpenGL2
  vtkRenderingCore
  vtkRenderingFreeType
  vtkRenderingGL2PSOpenGL2
  vtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
  message("Skipping VRMLImporter: ${VTK_NOT_FOUND_MESSAGE}")
  return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
  # old system
  include(${VTK_USE_FILE})
  add_executable(VRMLImporter MACOSX_BUNDLE VRMLImporter.cxx )
  target_link_libraries(VRMLImporter PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(VRMLImporter MACOSX_BUNDLE VRMLImporter.cxx )
  target_link_libraries(VRMLImporter PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS VRMLImporter
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build VRMLImporter¶

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

cd VRMLImporter/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:

./VRMLImporter