Method WriteScalar

IO/GeoJSON/vtkGeoJSONWriter.cxx:187–230

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

//------------------------------------------------------------------------------
void vtkGeoJSONWriter::WriteScalar(vtkDataArray* da, vtkIdType ptId)
{
  if (this->ScalarFormat == 0)
  {
    return;
  }
  if (da)
  {
    double b = da->GetTuple1(ptId);
    if (this->ScalarFormat == 1)
    {
      vtkLookupTable* lut = this->GetLookupTable();
      if (!lut)
      {
        lut = vtkLookupTable::New();
        lut->SetNumberOfColors(256);
        lut->SetHueRange(0.0, 0.667);
        lut->SetRange(da->GetRange());
        lut->Build();
        this->SetLookupTable(lut);
        lut->Delete();
      }
      const unsigned char* color = lut->MapValue(b);
      this->WriterHelper->append(",");
      this->WriterHelper->append((double)color[0] / 255.0);
      this->WriterHelper->append(",");
      this->WriterHelper->append((double)color[1] / 255.0);
      this->WriterHelper->append(",");
      this->WriterHelper->append((double)color[2] / 255.0);
    }
    else
    {
      if (vtkMath::IsNan(b))
      {
        this->WriterHelper->append(",null");
      }
      else
      {
        this->WriterHelper->append(",");
        this->WriterHelper->append(b);
      }
    }
  }
}

//------------------------------------------------------------------------------
void vtkGeoJSONWriter::WriteData()