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#!/bin/sh
############################################################################
#
# $Id: plm2gif 1443 1995-01-11 19:43:53Z mjl $
#
# File: plm2gif
# Usage: plm2gif [files]
#
# Maurice J. LeBrun (mjl@dino.ph.utexas.edu)
# Institute for Fusion Studies, University of Texas
# 10-Jan-95
#
# Converts specified PLplot metafiles to GIF format files. This is a
# two-step process:
# 1. process into postscript (with custom flags)
# 2. convert to GIF using ghostscript (more custom flags)
#
# Each input file must end with ".plm", and a corresponding family of GIF
# files ending with "<number>.gif" (one for each page) is created.
#
# The PLplot and ghostscript flags are chosen so that the output GIF file
# plots have the correct aspect ratio. This is complicated by the need to
# swap the postscript orientation into landscape mode. The GIF files
# created are by default of resolution 640x480 or less. To change, modify
# $res accordingly (note: Y-res must be exactly 9/16 of X-res in order for
# the plots to have the correct aspect ratio).
#
############################################################################
# Settings
gs="gs"
res="75.3x42.36" # 640 x 466
#res="94.1x52.93" # 800 x 582
# First find plrender and check version.
# Have to be a bit clever here since old versions of plrender returned an
# error code of 1 when passed the -v flag.
plversion=`plrender -v 2>&1 | awk 'NR == 2 {print $NF}'` || {
echo "How odd, don't you have awk? Aborting."
exit 1
}
if test -z "$plversion"; then
echo "plrender not found, aborting"
exit 1
fi
if test `expr "$plversion" \< "4.99j"` -eq 1; then
echo "Must be running PLplot version 4.99j or later"
exit
fi
# Now find ghostscript
gs_out=`$gs -v 2>&1` || {
echo "ghostscript ($gs) not found, aborting"
exit 1
}
# Finally, process files.
for arg in $*
do
if test -f $arg; then
echo "Processing $arg.."
name=`basename $arg .plm`
plrender -dev psc -o $name.ps -ori 3 -freeaspect $arg >/dev/null 2>&1
$gs -sDEVICE=gif8 -r$res -sOutputFile=$name%d.gif $name.ps \
</dev/null >/dev/null 2>&1
fi
done
exit 0
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