- Author
- Reed, K. A. | Harrod, D., Jr. | Conroy, W.
- Title
- Initial Graphics Exchange Specification (IGES) Version 5.0.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
- NISTIR 4412, September 1990, 600 p.
- Distribution
- Available from National Technical Information Service
- Keywords
- digital data interchange | product definition data | computer aided design | computer aided drafting
- Abstract
- This document contains Version 5.0 of the Initial Graphics Exchange Specification (IGES). The Initial Graphics Exchange Specification defines a file structure format, a language format, and the representation in these formats of geometric, topological, and non-geometric product definition data that occur in computer-aided design and drafting systems. Product definition data represented in these formats will be exchanged through a variety of physical media. The specific features and protocols for the communications media are the subject of other standards. The methodology for representing product definition data in this Specification is extensible and independent of the modeling methods used. Version 5.0 includes more than eighty Editorial Change Orders that have been approved by the IGES/PDES Organization since the issuance of Version 4.0. Besides corrections and clarifications, these changes introduce the Version 5.0 new area fill patterns and line font patterns to support AEC drafting, new properties and attributes to support electrical and printed wire assembly manufacturing, a perspective view capability, and a bounded surface entity for communicating trimmed surfaces.