rpatch [-D] [-3] < fastgen_input_file > file.rpRPATCH(1)
NAME
rpatch - reformat FASTGEN files for input to patch-g
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SYNOPSIS
DESCRIPTION
rpatch is a pre-processor that reformats FASTGEN target description files into the column-aligned record format expected by patch-g(1), which performs the actual conversion into a BRL-CAD geometry database. It reads a FASTGEN file from standard input and writes the reformatted records to standard output. Each input record is parsed by fixed-width FORTRAN-style column fields, the packed solid type code is decomposed into separate type, thickness, and space-code values, and the result is re-emitted in the space-delimited layout that patch-g(1) reads.
OPTIONS
- -D
-
Treat type 3 components as donuts rather than triangles.
- -3
-
Interpret the input as FASTGEN3 format, in which the coordinate fields are each 10 columns wide (the default layout uses narrower 8- and 9-column coordinate fields).
EXAMPLES
Example 1. Convert a FASTGEN model into a BRL-CAD database
rpatch < model.fastgen > model.rp
patch-g -f model.rp model.gThe first command reformats the raw FASTGEN file into the intermediate .rp record format; the second feeds that file to patch-g(1) to produce the BRL-CAD geometry database model.g. Add -3 to the rpatch invocation when the source file is in FASTGEN3 format.
DIAGNOSTICS
The diagnostics are intended to be self-explanatory.
SEE ALSO
brlcad(1), mged(1), patch-g(1)
AUTHOR
John R. Anderson
COPYRIGHT
This software is Copyright (c) 1994-2026 by the United States Government as represented by U.S. Army Research Laboratory.
BUG REPORTS
Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org