Davide Scaini
ccfc60934a
Previous script used NorthWest gravity with fixed pixel offsets, placing the BR pair in the upper-left quadrant. When Android clips to a circle the letters appeared off-center. New approach: -gravity Center with ±HALF offsets so each letter is symmetrically placed around the canvas centre mathematically. No subshells, no pixel guesswork. Regenerated all four icon assets.
52 lines
1.9 KiB
Bash
Executable File
52 lines
1.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Generates all icon assets for bincio-rec.
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# Requires ImageMagick 7 (magick).
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#
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# Centering strategy: both letters are rendered with -gravity Center.
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# Each letter's centre is offset ±HALF pixels from the canvas centre,
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# where HALF = (letter_width + gap) / 2. This gives mathematically
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# correct horizontal & vertical centering regardless of font metrics.
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set -e
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cd "$(dirname "$0")/.."
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FONT="$HOME/Library/Fonts/NotoSans-Bold.ttf"
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BG="#09090b"
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WHITE="#ffffff"
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RED="#ef4444"
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# render_br CANVAS BG SIZE HALF OUT
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# HALF = how many pixels each letter centre is offset from canvas centre.
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render_br() {
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local CANVAS=$1 BG_COL=$2 SIZE=$3 HALF=$4 OUT=$5
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magick -size "${CANVAS}x${CANVAS}" xc:"$BG_COL" \
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-font "$FONT" -pointsize "$SIZE" -gravity Center \
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-fill "$WHITE" -annotate "-${HALF}+0" 'B' \
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-fill "$RED" -annotate "+${HALF}+0" 'R' \
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"$OUT"
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}
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# render_br_transparent CANVAS SIZE HALF B_FILL R_FILL OUT
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render_br_transparent() {
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local CANVAS=$1 SIZE=$2 HALF=$3 B_FILL=$4 R_FILL=$5 OUT=$6
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magick -size "${CANVAS}x${CANVAS}" xc:none \
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-font "$FONT" -pointsize "$SIZE" -gravity Center \
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-fill "$B_FILL" -annotate "-${HALF}+0" 'B' \
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-fill "$R_FILL" -annotate "+${HALF}+0" 'R' \
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"$OUT"
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}
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# At 480 pt NotoSans-Bold, each capital is ~320 px wide.
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# Gap between inner edges: 60 px. Inter-centre: 320 + 60 = 380 → HALF = 190.
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render_br 1024 "$BG" 480 190 assets/icon.png
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# Adaptive foreground (transparent, fits the 66% safe zone).
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# 320 pt → letter ~215 px wide. Gap 50 px → HALF = 132.
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render_br_transparent 1024 320 132 "$WHITE" "$RED" assets/android-icon-foreground.png
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render_br_transparent 1024 320 132 "$WHITE" "$WHITE" assets/android-icon-monochrome.png
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# Splash 512×512 — 240 pt → letter ~160 px wide. Gap 36 px → HALF = 98.
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render_br 512 "$BG" 240 98 assets/splash-icon.png
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echo "✓ Icon assets generated in assets/"
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