Method GetColorsFromPolyData

Web/WebGLExporter/vtkWebGLPolyData.cxx:518–544

}

void vtkWebGLPolyData::GetColorsFromPolyData(
  unsigned char* color, vtkPolyData* polydata, vtkActor* actor)
{
  int celldata;
  vtkDataArray* array = vtkAbstractMapper::GetScalars(polydata, actor->GetMapper()->GetScalarMode(),
    actor->GetMapper()->GetArrayAccessMode(), actor->GetMapper()->GetArrayId(),
    actor->GetMapper()->GetArrayName(), celldata);
  if (actor->GetMapper()->GetScalarVisibility() && array != nullptr)
  {
    vtkScalarsToColors* table = actor->GetMapper()->GetLookupTable();

    vtkUnsignedCharArray* cor =
      table->MapScalars(array, table->GetVectorMode(), table->GetVectorComponent());
    memcpy(color, cor->GetPointer(0), polydata->GetNumberOfPoints() * 4);
    cor->Delete();
  }
  else
  {
    for (int i = 0; i < polydata->GetNumberOfPoints(); i++)
    {
      color[i * 4 + 0] = (unsigned char)255;
      color[i * 4 + 1] = (unsigned char)255;
      color[i * 4 + 2] = (unsigned char)255;
      color[i * 4 + 3] = (unsigned char)255;
    }
  }
}

void vtkWebGLPolyData::GetPolygonsFromPointData(
  vtkTriangleFilter* polydata, vtkActor* actor, int maxSize)