[fish] Add rustup config

bin/.local/bin/tile2letter.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+
+set -e
+
+usage() {
+    echo "Usage: tile-letter IMAGE [dpi=300] [overlap_inches=0] [orientation=portrait|landscape] [pdf=yes]"
+    exit 1
+}
+
+command -v magick >/dev/null || { echo "ImageMagick required"; exit 1; }
+command -v img2pdf >/dev/null || { echo "img2pdf required (optional if pdf=no)"; }
+
+input="$1"
+dpi="${2:-300}"
+overlap_in="${3:-0}"
+orientation="${4:-landscape}"
+make_pdf="${5:-yes}"
+
+[[ -f "$input" ]] || usage
+
+base=$(basename "$input")
+name="${base%.*}"
+
+# Letter size in inches
+portrait_w=8.5
+portrait_h=11
+
+if [[ "$orientation" == "landscape" ]]; then
+    letter_w=11
+    letter_h=8.5
+else
+    letter_w=$portrait_w
+    letter_h=$portrait_h
+fi
+
+tile_w=$(awk "BEGIN {print int($letter_w * $dpi)}")
+tile_h=$(awk "BEGIN {print int($letter_h * $dpi)}")
+
+overlap_px=$(awk "BEGIN {print int($overlap_in * $dpi)}")
+
+echo "Input: $input"
+echo "DPI: $dpi"
+echo "Orientation: $orientation"
+echo "Page size: ${tile_w}x${tile_h}"
+echo "Overlap: ${overlap_in}in (${overlap_px}px)"
+
+mkdir -p "${name}_tiles"
+
+crop_w=$((tile_w + overlap_px))
+crop_h=$((tile_h + overlap_px))
+
+magick "$input" \
+  -crop ${crop_w}x${crop_h} \
+  -background white \
+  -gravity northwest \
+  -extent ${tile_w}x${tile_h} \
+  +repage \
+  "${name}_tiles/${name}_%03d.jpg"
+
+echo "Tiles written to ${name}_tiles/"
+
+if [[ "$make_pdf" == "yes" ]]; then
+    pdf="${name}_poster.pdf"
+    img2pdf "${name}_tiles"/*.jpg -o "$pdf"
+    echo "PDF written to $pdf"
+fi
+