p42: 启动/菜单水面涟漪整改 — 振幅0.32+波峰列, 帧差14.3, 防降振回归 (leader fix: 提交+推送)

1 files changed, 39 insertions, 0 deletions

diff --git a/scripts/make-p42-menu-closeup.py b/scripts/make-p42-menu-closeup.py
new file mode 100644
index 0000000..64d885f
--- /dev/null
+++ b/scripts/make-p42-menu-closeup.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+"""P42 evidence: NEAREST 2x close-up of the animated start-menu band.
+
+Crops the lower scene band of the `LV_P42_SHOT=1` menu frame -- the bank lanterns
+and the rippling water band -- and upscales exactly 2x with NEAREST so pixel edges
+stay sharp.  Deterministic: fixed crop box, pure function of the input PNG.
+
+Usage:
+    python3 scripts/make-p42-menu-closeup.py <record-dir> <out-dir>
+"""
+
+import sys
+from pathlib import Path
+
+from PIL import Image
+
+CROPS = [
+    ("p42-menu-anim.png", (160, 440, 1120, 720), "p42-menu-anim-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))