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Script to help load VTK images into ParaView as a sequence for animation

Creates symbolic links to all VTK files in a post-processing directory
Links form a sequence like name.0000.vtk, name.0001.vtk, etc.
Paraview recognises link names as a sequence which can be animated.
The sequence of links can be used to create a video from the images.
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Chris Greenshields
Chris Greenshields committed May 15, 2015
1 parent 8ad96fb commit 145035451e1b844287a2881548975daaf1191e26
Showing with 126 additions and 0 deletions.
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#!/bin/sh
#------------------------------------------------------------------------------
# ========= |
# \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
# \\ / O peration |
# \\ / A nd | Copyright (C) 2015 OpenFOAM Foundation
# \\/ M anipulation |
#-------------------------------------------------------------------------------
# License
# This file is part of OpenFOAM.
#
# OpenFOAM is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License
# along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
#
# Script
# foamSequenceVTKFiles
#
# Description
# Creates symbolic links to all VTK files in a post-processing directory
# Links form a sequence like name.0000.vtk, name.0001.vtk, etc.
# Paraview recognises link names as a sequence which can be animated.
# The sequence of links can be used to create a video from the images.
# - Default directory name for VTK files is postProcessing
#
#------------------------------------------------------------------------------
usage () {
exec 1>&2
while [ "$#" -ge 1 ]; do echo "$1"; shift; done
cat <<USAGE
Usage: ${0##*/} [OPTIONS] ...
options:
-c | -case <dir> specify case directory (default = local dir)
-d | -dir <dir> post-processing directory <dir> (default = postProcessing)
-h | -help help
-o | -out <dir> output links directory <dir> (default = sequencedVTK)
Creates symbolic links to all VTK files in a post-processing directory
Links form a sequence like name.0000.vtk, name.0001.vtk, etc.
Paraview recognises the link names as a sequence which can be opened and played.
The sequence of links to images can be used to create a video from the images.
- Default directory name for VTK files is postProcessing
USAGE
exit 1
}
DIR=postProcessing
OUT=sequencedVTK
while [ "$#" -gt 0 ]
do
case "$1" in
-c | -case)
[ "$#" -ge 2 ] || usage "'$1' option requires an argument"
cd "$2" 2>/dev/null || usage "directory does not exist: '$2'"
shift 2
;;
-d | -dir)
[ "$#" -ge 2 ] || usage "'$1' option requires an argument"
DIR=$2
shift 2
;;
-h | -help)
printUsage
;;
-o | -out)
[ "$#" -ge 2 ] || usage "'$1' option requires an argument"
OUT=$2
shift 2
;;
-*)
usage "invalid option '$1'"
;;
*)
break
;;
esac
done
if [ ! -d $DIR ]; then
echo "Cannot find postProcessing directory, exiting."
exit 0
fi
FILES=$(find $DIR -type f -name *vtk)
NAMES=$(basename -s .vtk -a $FILES | sort -u)
if [ -d $OUT ]; then
echo "$OUT directory already exists. Deleting links within it..."
rm -rf $OUT/*
else
echo "Creating $OUT directory..."
mkdir $OUT
fi
for N in $NAMES
do
echo "Sequencing all VTK files named $N.vtk"
# Create list of VTK files, ordered by time step
FILE_LIST=$(echo $FILES | \
tr " " "\n" | \
grep $N.vtk | \
awk -F'/' '{print($(NF-1)" "$0)}' | \
sort -k 1 -g | \
cut -d' ' -f2)
i=0
for F in $FILE_LIST
do
i=$(expr $i + 1) # Relies on ordered list of $sourceFiles
LINK=$(printf "${N}.%04d.vtk" $i)
ln -s ../$F $OUT/$LINK
done
done

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