tf2  master
tf2 maintains the relationship between coordinate frames in a tree structure buffered in time, and lets the user transform points, vectors, etc between any two coordinate frames at any desired point in time.
File List
Here is a list of all files with brief descriptions:
[detail level 1234]
  include
  tf2
  impl
 convert.h
 utils.h
  LinearMath
 Matrix3x3.h
 MinMax.h
 QuadWord.h
 Quaternion.h
 Scalar.h
 Transform.h
 Vector3.h
 buffer_core.h
 buffer_core_interface.h
 convert.h
 exceptions.h
 time.h
 time_cache.h
 transform_datatypes.h
 transform_storage.h
 utils.h
 visibility_control.h