36 lines
1.1 KiB
Bash
36 lines
1.1 KiB
Bash
#!/bin/bash
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# arc central angle in degrees
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arc_size="64.5"
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arc_start=$(bc -l <<< "90 - $arc_size / 2")
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arc_end=$(bc -l <<< "90 + $arc_size / 2")
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N=100
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for ((i=0; i < $N; i++)); do
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progress=$(bc -l <<< "$i / ($N - 1)")
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fg_arc_start=$(bc -l <<< "$arc_end - $progress * $arc_size")
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filename="progress$(printf "%02d" $i).png"
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echo "-- Writing file: $filename"
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convert -size 400x400 xc:black \
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-draw "stroke-linecap round stroke-width 8 \
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stroke gray ellipse 200,200 100,100 $arc_start,$arc_end \
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stroke white ellipse 200,200 100,100 $fg_arc_start,$arc_end" "$filename"
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echo "-- Writing file: rtl_$filename"
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convert -size 400x400 xc:black \
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-draw "stroke-linecap round stroke-width 8 \
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stroke gray ellipse 200,200 100,100 $arc_start,$arc_end \
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stroke white ellipse 200,200 100,100 $fg_arc_start,$arc_end" "rtl_$filename"
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mogrify -crop 120x30+140+280 "$filename"
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mogrify -crop 120x30+140+280 "rtl_$filename"
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# Use color format recovery can use
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mogrify -define png:format=png24 -type TrueColor "$filename"
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mogrify -define png:format=png24 -type TrueColor "rtl_$filename"
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mogrify -flop "rtl_$filename"
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done
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