Function vtkConcatenationTransformPoint

Common/Transforms/vtkGeneralTransform.cxx:59–91

// Pass the point through each transform in turn
template <class T2, class T3>
void vtkConcatenationTransformPoint(
  vtkAbstractTransform* input, vtkTransformConcatenation* concat, T2 point[3], T3 output[3])
{
  output[0] = point[0];
  output[1] = point[1];
  output[2] = point[2];

  int i = 0;
  int nTransforms = concat->GetNumberOfTransforms();
  int nPreTransforms = concat->GetNumberOfPreTransforms();

  // push point through the PreTransforms
  for (; i < nPreTransforms; i++)
  {
    concat->GetTransform(i)->InternalTransformPoint(output, output);
  }

  // push point though the Input, if present
  if (input)
  {
    if (concat->GetInverseFlag())
    {
      input = input->GetInverse();
    }
    input->InternalTransformPoint(output, output);
  }

  // push point through PostTransforms
  for (; i < nTransforms; i++)
  {
    concat->GetTransform(i)->InternalTransformPoint(output, output);
  }
}

//------------------------------------------------------------------------------
// Pass the point through each transform in turn,