Method LoadDataFile

Examples/Emscripten/Cxx/GeometryViewer/GeometryViewer.cxx:335–418

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void GeometryViewer::LoadDataFile(const std::string& filename)
{

  std::cout << __func__ << "(" << filename << ")" << std::endl;

  auto mapper = vtk::TakeSmartPointer(vtkPolyDataMapper::New());
  vtkSmartPointer<vtkDataObject> mesh;

  using systools = vtksys::SystemTools;
  if (systools::StringEndsWith(filename, ".vtp"))
  {
    auto xmlreader = vtk::TakeSmartPointer(vtkXMLPolyDataReader::New());
    xmlreader->SetFileName(filename.c_str());
    xmlreader->Update();
    mesh = xmlreader->GetOutput();
  }
  else if (systools::StringEndsWith(filename, ".vtu"))
  {
    auto xmlreader = vtk::TakeSmartPointer(vtkXMLUnstructuredGridReader::New());
    xmlreader->SetFileName(filename.c_str());
    auto surface = vtk::TakeSmartPointer(vtkGeometryFilter::New());
    surface->SetInputConnection(xmlreader->GetOutputPort());
    surface->Update();
    mesh = surface->GetOutput();
  }
  else if (systools::StringEndsWith(filename, ".vtk"))
  {
    auto polydataReader = vtk::TakeSmartPointer(vtkPolyDataReader::New());
    polydataReader->SetFileName(filename.c_str());
    polydataReader->Update();
    mesh = polydataReader->GetOutput();
  }
  else if (systools::StringEndsWith(filename, ".glb") ||
    systools::StringEndsWith(filename, ".gltf"))
  {
    // TODO: Hangs.
    // auto gltfreader = vtk::TakeSmartPointer(vtkGLTFReader::New());
    // mapper = vtk::TakeSmartPointer(vtkPolyDataMapper::New());
    // gltfreader->SetFileName(filename.c_str());
    // reader = gltfreader;
  }
  else if (systools::StringEndsWith(filename, ".obj"))
  {
    auto objreader = vtk::TakeSmartPointer(vtkOBJReader::New());
    objreader->SetFileName(filename.c_str());
    objreader->Update();
    mesh = objreader->GetOutput();
  }
  else if (systools::StringEndsWith(filename, ".ply"))
  {
    auto plyreader = vtk::TakeSmartPointer(vtkPLYReader::New());
    plyreader->SetFileName(filename.c_str());
    plyreader->Update();
    mesh = plyreader->GetOutput();
  }
  else if (systools::StringEndsWith(filename, ".vtpc"))
  {
    mapper = vtk::TakeSmartPointer(vtkCompositePolyDataMapper::New());