animation/stipple.sh

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#!/bin/bash
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###########################
#
# Run the stipple_gen script on a sequence
# of PNG images and then render the resulting
# preview images into a video.
#
###########################
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if [[ "${1}" == "" ]]; then
echo "Please provide a directory of images as the first argument"
exit 1
fi
INPUT=`realpath "${1}"`
OUTPUT=`realpath "${2}"`
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INVERT="${3}"
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if [ ! -d "${INPUT}" ]; then
echo "Directory ${1} doesn't exist"
exit 2
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fi
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mkdir -p "${OUTPUT}"
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FRAMERATE=12
WIDTH=404
HEIGHT=374
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DOTSIZE=6
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MAXGENERATIONS=50
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MAXPARTICLES=900
MINDOTSIZE=0.5
LINE=0.5
FILL=true
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MODE="stipple" #stipple/tsp
if [[ "${INVERT}" == "" ]]; then
INVERT="false"
fi
IMAGES=""
#files in dir
for png in "${INPUT}/"*.png ; do
filename=`basename "${png}"`
name=`echo "${filename}" | cut -d'.' -f1`
num=`echo "${name}" | awk -F'_' '{print $(NF)}'`
tmp=`mktemp`.png
bash white.sh "${png}" "${tmp}"
cd ~/src/stipple_gen/
if [ "${IMAGES}" == "" ]; then
part=`echo "${name}" | awk -F'_0' '{print $1}'`
IMAGES="${OUTPUT}/${part}_%06d_rendered.png"
VIDEO="${OUTPUT}/${part}.mov"
fi
bash stipple_gen.sh \
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--display "false" \
--inputImage "${tmp}" \
--outputImage "${OUTPUT}/${name}_rendered.png" \
--outputSVG "${OUTPUT}/${name}.svg" \
--canvasWidth $WIDTH \
--canvasHeight $HEIGHT \
--dotSizeFactor $DOTSIZE \
--windowWidth $WIDTH \
--windowHeight $HEIGHT \
--maxGenerations $MAXGENERATIONS \
--minDotSize $MINDOTSIZE \
--line $LINE \
--fill $FILL \
--maxParticles $MAXPARTICLES \
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--mode $MODE \
--invert $INVERT
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if [[ "${INVERT}" != "false" ]]; then
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convert "${OUTPUT}/${name}_rendered.png" -channel RGB -negate "${OUTPUT}/${name}_rendered.png"
fi
rm "${tmp}"
cd ~/src/animation/
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if [ "${MODE}" != "tsp" ]; then
opt=`mktemp`.svg
svgsort "${OUTPUT}/${name}.svg" "${opt}"
mv "${opt}" "${OUTPUT}/${name}.svg"
fi
done
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ffmpeg -y -r ${FRAMERATE} -f image2 -i "${IMAGES}" \
-c:v prores_ks -profile:v 3 \
"${VIDEO}"