Add routine to get parameter map for piecewise curves/surfaces.
Merge commit 'f788da418e764354aaa50404a1e856a12d6e7f73' into feature/Add_pmap_getter

* commit 'f788da418e764354aaa50404a1e856a12d6e7f73':
  Add routine to get parameter map for piecewise curves/surfaces.
Merge branch 'feature/Add_pmap_getter' into develop