clean.sh

#!/bin/bash
# can be used to clean up a svg
# need to play around with parameters yourself though
# https://vpype.readthedocs.io/en/latest/reference.html

INPUT=$1
OUTPUT=${INPUT%.svg}-cleaned.svg
FILTERED=$(mktemp --suffix=.svg)

echo $INPUT -> $OUTPUT

# Pre-filter: remove inactive segments (elements without class "rune-segment--active")
# so vpype doesn't process intentionally hidden lines.
python3 - "$INPUT" "$FILTERED" <<'EOF'
import sys, xml.etree.ElementTree as ET

ET.register_namespace('', 'http://www.w3.org/2000/svg')
ET.register_namespace('xlink', 'http://www.w3.org/1999/xlink')

tree = ET.parse(sys.argv[1])
root = tree.getroot()

def remove_inactive(parent):
    for el in list(parent):
        cls = el.get('class', '')
        # Remove segments that exist but are not active
        if 'rune-segment' in cls and 'rune-segment--active' not in cls:
            parent.remove(el)
        else:
            remove_inactive(el)

remove_inactive(root)
tree.write(sys.argv[2], xml_declaration=True, encoding='unicode')
EOF

#vpype read "$INPUT" linemerge --tolerance 0.01mm linemerge --tolerance 0.05mm linemerge --tolerance 0.1mm linesimplify linesimplify --tolerance 0.1mm linesort write ${OUTPUT}
vpype read "$FILTERED" snap 0.1mm linemerge --tolerance 0.1mm linesort write ${OUTPUT}
#vpype read "$INPUT" snap 0.5mm write ${OUTPUT}

rm "$FILTERED"