Method SetColorByArray

Examples/Emscripten/Cxx/GeometryViewer/GeometryViewer.cxx:665–707

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//------------------------------------------------------------------------------
void GeometryViewer::SetColorByArray(const std::string& arrayName)
{
  auto mapper = this->P->Actor->GetMapper();
  this->P->HighlighterData.ActivePointColorArray = "";
  this->P->HighlighterData.ActiveCellColorArray = "";
  if (!mapper)
  {
    return;
  }
  std::cout << __func__ << '(' << arrayName << ')' << std::endl;
  if (arrayName == "Solid")
  {
    mapper->ScalarVisibilityOff();
    return;
  }
  mapper->ScalarVisibilityOn();
  vtkDataArray* scalarArray = nullptr;
  if (this->P->PointDataArrays.count(arrayName))
  {
    this->P->HighlighterData.ActivePointColorArray = arrayName;
    mapper->SetScalarModeToUsePointFieldData();
    scalarArray = mapper->GetDataSetInput()->GetPointData()->GetArray(arrayName.c_str());
  }
  else if (this->P->CellDataArrays.count(arrayName))
  {
    this->P->HighlighterData.ActiveCellColorArray = arrayName;
    mapper->SetScalarModeToUseCellFieldData();
    scalarArray = mapper->GetDataSetInput()->GetCellData()->GetArray(arrayName.c_str());
  }
  else
  {
    return;
  }
  // TODO: handle multi-component arrays with magnitude, x, y, z ..
  mapper->ColorByArrayComponent(arrayName.c_str(), 0);
  if (scalarArray)
  {
    double range[2];
    scalarArray->GetRange(range);
    mapper->SetScalarRange(range);
  }
  this->P->UpdateLUT();
}

//------------------------------------------------------------------------------
void GeometryViewer::SetInterpolateScalarsBeforeMapping(bool value)