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4ab78fd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | """Render alignment animations without registration, cropping, or warping."""
from pathlib import Path
import re
from PIL import Image
ROOT = Path(__file__).resolve().parents[1]
samples = re.findall(r'src="assets/preview/PCB/([^\"]+)"', (ROOT / "README.md").read_text())
out = ROOT / "assets/preview/Overlay"
out.mkdir(parents=True, exist_ok=True)
for name in samples:
with Image.open(ROOT / "assets/preview/PCB" / name) as image:
pcb = image.convert("RGB")
with Image.open(ROOT / "assets/preview/Layout" / name) as image:
layout = image.convert("RGB")
assert pcb.size == layout.size, f"Size mismatch: {name}"
# Apply identical display downsampling; preserve the supplied correspondence.
pcb.thumbnail((640, 640), Image.Resampling.LANCZOS)
layout = layout.resize(pcb.size, Image.Resampling.LANCZOS)
frames = [Image.blend(pcb, layout, alpha) for alpha in (0, 0.5, 1, 0.5)]
# A shared palette prevents unrelated colors from flickering between frames.
atlas = Image.new("RGB", (pcb.width * 3, pcb.height))
for i, frame in enumerate(frames[:3]):
atlas.paste(frame, (i * pcb.width, 0))
palette = atlas.quantize(colors=256)
frames = [frame.quantize(palette=palette, dither=Image.Dither.NONE) for frame in frames]
frames[0].save(out / f"{Path(name).stem}.gif", save_all=True,
append_images=frames[1:], duration=[1000, 700, 1000, 700],
loop=0, disposal=2, optimize=False)
print(f"Rendered {len(samples)} animated overlays.")
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