4f3ec011016c848ad62ad9b9c40767f9fcbf03a4 and
5a64c687ddccb3012b4fdb5c9cfb5d6459fcf39e removed useDeform < 0 which
was always false as useDeform was either 1 or 0.

So either revert the commit or remove these if blocks.

This patch makes the tests listed in
4f3ec011016c848ad62ad9b9c40767f9fcbf03a4 pass.