NTRS - NASA Technical Reports Server

Back to Results
Modeling concepts for communication of geometric shape dataANSI5, an abbreviation for Section 5 of the American National Standard under Engineering Drawing and Related Documentation Practices (Committee Y14) on Digital Representation for Communication of Product Definition Data (ANSI Y14.26M-1981), allows encoding of a broad range of geometric shapes to be communicated through digital channels. A brief review of its underlying concepts is presented. The intent of ANSI5 is to devise a unified set of concise language formats for transmission of data pertaining to five types of geometric entities in Euclidean 3 space (E(3)). These are regarded as point like, curve like, surface like, solid like, and a combination of these types. For the first four types, ANSI5 makes a distinction between the geometry and topology. Geometry is a description of the spatial occupancy of the entity, and topology discusses the interconnectedness of the entity's boundary components.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Collins, M. F.
(Control Data Corp. Saint Louis, MO, United States)
Emnett, R. F.
(McDonnell-Douglas Automation Co.)
Magedson, R. L.
(Boeing Commercial Airplane Co.)
Shu, H. H.
(McDonnell Douglas Astronautics Co.)
Date Acquired
August 12, 2013
Publication Date
March 1, 1984
Publication Information
Publication: NASA. Langley Research Center Computer-Aided Geometry Modeling
Subject Category
Computer Programming And Software
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.
No Preview Available