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Wikinaut/make-circle.sh

Created February 26, 2022 12:14
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make-circle.sh
#!/usr/bin/bash
# create a semi-transparent circle image with an annotation text
echo "circle <text> <circlesize> <fillcolor> <opacity>"
magick -size "$2"x"$2" \
xc:none -stroke black -strokewidth 2 -fill "$3" \
-draw 'circle %[fx:w/2],%[fx:h/2] %[fx:w/2],%[fx:h]' \
-alpha set -channel A -evaluate Multiply "$4" +channel \
-set pt %[fx:h/1.5] \
-set ofs %[fx:h/18] \
-pointsize %[pt] -gravity center -fill black -annotate +0+%[ofs] "$1" \
"circle-${1}.png"
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