OFF (DEC-WSE Object File Format)

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File Format
Name OFF (DEC-WSE Object File Format)
Ontology
Extension(s) .off, .aoff, others
Released 1986

OFF (Object File Format) is a scene description language originally developed by Randi J. Rost at Digital Equipment Corporation's Workstations Systems Engineering.

The format, or some subset or extension of it, is probably also known as OOGL Geom or Geomview format.

Contents

Format

As originally specified

There is both a binary (.off) and a text (.aoff) version of the format.

An OFF "file" can actually be a collection of files, consisting of a main .off or .aoff file, and other files referenced by it. The conventional filename extensions for these other files are .geom, .bgeom, .pcol, .bpcol, .vcol, .bpcol, .vcol, .bvcol, .ipcol, .bipcol, .ivcol, .bivcol, .pnorm, .bpnorm, .vnorm, and .bvnorm.

As observed

Text files representing individual objects may use the .off extension, instead of, say, .geom.

Identification

Some text files begin with the ASCII signature "OFF", but this is optional and not always present.

An .aoff file has lines that begin with keywords such as "name", "author", "description", "type", "geometry", etc.

Specifications

Software

Sample files

Links

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