Method InterpolateTuple

Common/Core/vtkStringArray.cxx:294–324

------------------------------------------------------------------------------ Interpolate array value from other array value given the indices and associated interpolation weights. This method assumes that the two arrays are of the same time.

// indices and associated interpolation weights.
// This method assumes that the two arrays are of the same time.
void vtkStringArray::InterpolateTuple(
  vtkIdType i, vtkIdList* ptIndices, vtkAbstractArray* source, double* weights)
{
  if (this->GetDataType() != source->GetDataType())
  {
    vtkErrorMacro("Cannot CopyValue from array of type " << source->GetDataTypeAsString());
    return;
  }

  if (ptIndices->GetNumberOfIds() == 0)
  {
    // nothing to do.
    return;
  }

  // We use nearest neighbour for interpolating strings.
  // First determine which is the nearest neighbour using the weights-
  // it's the index with maximum weight.
  vtkIdType nearest = ptIndices->GetId(0);
  double max_weight = weights[0];
  for (int k = 1; k < ptIndices->GetNumberOfIds(); k++)
  {
    if (weights[k] > max_weight)
    {
      nearest = ptIndices->GetId(k);
      max_weight = weights[k];
    }
  }

  this->InsertTuple(i, nearest, source);
}

//------------------------------------------------------------------------------
// Interpolate value from the two values, p1 and p2, and an