…eference surface exploiting vtkImplicitPolyDataDistance class

…e reference surface)

…al expansion of the bounding box

…t bounding box

…ng them in images

…o in GuessFormat mode

…is active, now only if the array is not defined

… a triangle with the Interpolator

…rking)

… points from the output

…outside region

…o avoid duplicated code

…sh/surface

  move new scripts to contrib directory
  update cmake and imports

  chore: pep8 fixes