The AbcGeom library builds atop
Abc, and is intended to be the primary layer for
dealing with data with a geometric interpretation, e.g., PolyMesh or Xform.
Using the AbcGeom layer is conceptually very much like using the Abc layer but, since you are dealing in well-defined and specified higher-level types, is far less verbose. For example, to write a polygonal mesh using AbcGeom functions.