Method PassData

Common/DataModel/vtkDataSetAttributes.cxx:312–365

------------------------------------------------------------------------------ Pass entire arrays of input data through to output. Obey the "copy" flags.

//------------------------------------------------------------------------------
// Pass entire arrays of input data through to output. Obey the "copy" flags.
void vtkDataSetAttributes::PassData(vtkFieldData* fd)
{
  if (!fd)
  {
    return;
  }

  vtkDataSetAttributes* dsa = vtkDataSetAttributes::SafeDownCast(fd);

  if (dsa)
  {
    // Create an iterator to iterate over the fields which will
    // be passed, i.e. fields which are either:
    // 1> in the list of _fields_ to be copied or
    // 2> in the list of _attributes_ to be copied.
    // Note that nullptr data arrays are not copied

    vtkFieldData::BasicIterator it = this->ComputeRequiredArrays(dsa, PASSDATA);

    if (it.GetListSize() > this->NumberOfArrays)
    {
      this->AllocateArrays(it.GetListSize());
    }
    if (it.GetListSize() == 0)
    {
      return;
    }

    // Since we are replacing, remove old attributes
    for (int attributeType = 0; attributeType < NUM_ATTRIBUTES; ++attributeType)
    {
      if (this->CopyAttributeFlags[PASSDATA][attributeType])
      {
        this->RemoveArray(this->AttributeIndices[attributeType]);
        this->AttributeIndices[attributeType] = -1;
      }
    }

    for (const auto& i : it)
    {
      int arrayIndex = this->AddArray(dsa->GetAbstractArray(i));
      // If necessary, make the array an attribute
      int attributeType = dsa->IsArrayAnAttribute(i);
      if ((attributeType != -1) && this->CopyAttributeFlags[PASSDATA][attributeType])
      {
        this->SetActiveAttribute(arrayIndex, attributeType);
      }
    }
  }
  else
  {
    this->vtkFieldData::PassData(fd);
  }
}

//------------------------------------------------------------------------------
namespace