The FTPC fast simulator is implemented in C++ (as a part of StFtpcClusterMaker).
It was converted from Fortran (pam/ffs) to C++ by Holm Hümmler and is supported by Janet Seyboth.
StFtpcFastSimu simply takes the hit points registered by geant and turns them into FTPC points. Some cuts are applied to remove points that are outside the sensitive volume of the FTPC sectors and to account for the loss of hits due to cluster merging. Some of the geant information is kept in the gepoint table to be used in efficiency studies.