The Design and Implementation of a General Purpose Interactive Graphics Subroutine Library.

摘要

This thesis describes the design and implementation of a high level, general purpose, interactive graphics subroutine library for the Vector General Interactive Graphics Display System. The lower interface levels of the system and its effects on the development of this high level interface are discussed. The problems and various approaches associated with the development of a general purpose, high level applications subroutine library that is user oriented is outlined. The basic design goals, solutions and recommendations for further expansion of the system are presented. This graphics subroutine library is implemented within the conventions of the C-Programming language and the UNIX operating system as implemented on the PDP-11/50 in the Naval Postgraduate School Computer Laboratory. (Author)