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#!/usr/bin/env python3
"""P39 evidence: NEAREST 2x close-ups of the new Jiangnan elements.
Takes the real 1280x720 game frames captured by the `LV_P39_SHOT=1` hook and
crops the new-element regions, upscaling exactly 2x with NEAREST so pixel edges
stay sharp (no mixed colours). Deterministic: fixed crop boxes, pure function of
the input PNGs, so running twice yields byte-identical output.
Usage:
python3 scripts/make-p39-closeups.py <record-dir> <out-dir>
"""
import sys
from pathlib import Path
from PIL import Image
# (source frame, crop box x0,y0,x1,y1, output name)
CROPS = [
("p39-day.png", (500, 180, 820, 420), "p39-closeup-2x.png"),
("p39-lantern-night.png", (150, 270, 470, 450), "p39-closeup-lantern-2x.png"),
]
def main(argv):
if len(argv) != 3:
sys.stderr.write(__doc__)
return 2
record_dir = Path(argv[1])
out_dir = Path(argv[2])
out_dir.mkdir(parents=True, exist_ok=True)
for source_name, box, out_name in CROPS:
source = Image.open(record_dir / source_name).convert("RGBA")
crop = source.crop(box)
doubled = crop.resize((crop.width * 2, crop.height * 2), Image.NEAREST)
doubled.save(out_dir / out_name)
print(f"ok {out_name} {doubled.width}x{doubled.height} from {source_name} box={box}")
return 0
if __name__ == "__main__":
raise SystemExit(main(sys.argv))
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