It resembles rain or a data stream: short lines move in one direction, fading from a clear leading edge to a trailing edge.
`angle` from 0–360 sets direction: 90 moves down, 270 up, 0 right, and 180 left. `speed` from 0–3 changes movement pace, `density` from 1–60 sets the number of line columns, and `trailLength` from 0.01–1 controls streak length. `balance` from 0–1 shifts the transition between leading and trailing colors.
Falling Lines draws its own background layer. A simple direction over a dark surface keeps the motion readable. Dense lines can compete with text, so reduce density and trail length together.
When to use
Use it for rain or data-stream inspired backgrounds, a short directional transition, or a hero that needs a sense of speed. Avoid layering it over important text or precise charts.