effect · parallax
Sundial Scroll Shadows
Scrolling moves the sun across a sky from 06:00 to 18:00; each object's shadow is a blurred copy of its silhouette flipped with scaleY and skewed by the sun's azimuth, its length 1/tan(elevation) — long raking shadows at dawn and dusk, stubby ones at noon — while the sky gradient warms and cools.