Method WritePolyData

IO/Geometry/vtkIVWriter.cxx:52–209

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

//------------------------------------------------------------------------------
void vtkIVWriter::WritePolyData(vtkPolyData* pd, FILE* fp)
{
  vtkPoints* points;
  vtkIdType i;
  vtkCellArray* cells;
  vtkIdType npts = 0;
  const vtkIdType* indx = nullptr;
  vtkUnsignedCharArray* colors = nullptr;

  points = pd->GetPoints();

  // create colors for vertices
  vtkDataArray* scalars = pd->GetPointData()->GetScalars();

  if (scalars)
  {
    vtkLookupTable* lut;
    if ((lut = scalars->GetLookupTable()) == nullptr)
    {
      lut = vtkLookupTable::New();
      lut->Build();
    }
    colors = lut->MapScalars(scalars, VTK_COLOR_MODE_DEFAULT, 0);
    if (!scalars->GetLookupTable())
    {
      lut->Delete();
    }
  }

  vtk::print(fp, "Separator {{\n");

  // Point data (coordinates)
  vtk::print(fp, "\tCoordinate3 {{\n");
  vtk::print(fp, "\t\tpoint [\n");
  vtk::print(fp, "\t\t\t");
  for (i = 0; i < points->GetNumberOfPoints(); i++)
  {
    double xyz[3];
    points->GetPoint(i, xyz);
    vtk::print(fp, "{:g} {:g} {:g}, ", xyz[0], xyz[1], xyz[2]);
    if (!((i + 1) % 2))
    {
      vtk::print(fp, "\n\t\t\t");
    }
  }
  vtk::print(fp, "\n\t\t]");
  vtk::print(fp, "\t}}\n");

  // Per vertex coloring
  vtk::print(fp, "\tMaterialBinding {{\n");
  vtk::print(fp, "\t\tvalue PER_VERTEX_INDEXED\n");
  vtk::print(fp, "\t}}\n");

  // Colors, if any
  if (colors)
  {
    vtk::print(fp, "\tMaterial {{\n");
    vtk::print(fp, "\t\tdiffuseColor [\n");