mirror of
https://github.com/kuhyx/testsAndMisc.git
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Krzysztof kuhy Rudnicki
d502580e3f
Six text-free styles (gradient, flow/Voronoi, habit heatmap, shutdown clock, Earth day/night, plasma) replace the white i3 root. A 15-minute systemd user timer picks a new random style per monitor every 3 hours, unlike its previous one and the other monitor's; live styles refresh in between. Also syncs i3/config with the live config and prunes the oldest evidence artifact for the 60-file cap. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WzxdWX51FMD58yKUC1eYWf
65 lines
2.3 KiB
Python
65 lines
2.3 KiB
Python
"""Style 5: the Earth now, lit side from Blue Marble, dark side from Black Marble.
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Images: NASA Earth Observatory, public domain; fetched by install.sh.
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"""
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from __future__ import annotations
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from datetime import UTC
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from typing import TYPE_CHECKING
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import numpy as np
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from PIL import Image
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from python_pkg.wallpaper_rotator import _palette
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if TYPE_CHECKING:
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from python_pkg.wallpaper_rotator._context import RenderContext
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_DAY = "day.jpg"
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_NIGHT = "night.jpg"
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_TWILIGHT = 0.12 # width of the soft terminator, in cos(zenith)
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_DAY_DIM = 0.45 # keep the lit side well below "blinding"
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def available(ctx: RenderContext) -> bool:
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"""Both source images are on disk."""
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return (ctx.earth_dir / _DAY).is_file() and (ctx.earth_dir / _NIGHT).is_file()
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def sun_position(ctx: RenderContext) -> tuple[float, float]:
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"""Approximate subsolar (latitude, longitude) in radians for ``ctx.now``."""
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utc = ctx.now.astimezone(UTC)
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day_of_year = utc.timetuple().tm_yday
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declination = np.radians(-23.44) * np.cos(2 * np.pi * (day_of_year + 10) / 365)
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hours = utc.hour + utc.minute / 60
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return float(declination), float(np.radians((12.0 - hours) * 15.0))
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def _load(ctx: RenderContext, name: str, size: tuple[int, int]) -> np.ndarray:
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with Image.open(ctx.earth_dir / name) as raw:
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rgb = raw.convert("RGB").resize(size, Image.Resampling.LANCZOS)
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return np.asarray(rgb, dtype=np.float64)
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def render(
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ctx: RenderContext, size: tuple[int, int], _rng: np.random.Generator
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) -> Image.Image:
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"""Blend day and night maps along the real terminator, letterboxed."""
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width, height = size
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map_w = width
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map_h = min(width // 2, height)
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lat = np.linspace(np.pi / 2, -np.pi / 2, map_h)[:, None]
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lon = np.linspace(-np.pi, np.pi, map_w)[None, :]
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sun_lat, sun_lon = sun_position(ctx)
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cos_zenith = np.sin(lat) * np.sin(sun_lat) + np.cos(lat) * np.cos(sun_lat) * np.cos(
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lon - sun_lon
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)
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lit = np.clip(cos_zenith / _TWILIGHT + 0.5, 0.0, 1.0)[..., None]
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day = _load(ctx, _DAY, (map_w, map_h)) * _DAY_DIM
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night = _load(ctx, _NIGHT, (map_w, map_h))
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earth = (day * lit + night * (1.0 - lit)).round().astype(np.uint8)
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image = Image.new("RGB", size, _palette.DEEP)
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image.paste(Image.fromarray(earth, "RGB"), (0, (height - map_h) // 2))
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return image
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