∞ forever components

Charts & Flow

Arc Timeline

Mint playhead sweeps a quarter-circle arc, lighting 11 event markers and tracing a cumulative magnitude ribbon on dark navy.

canvasmedium complexitymoderate motion

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When to use it

Data storytelling dashboards, project retrospectives, or ambient displays showing how events accumulate over a time span.

When not to

Light-background UIs (background hardcoded dark navy). Contexts needing interactive scrubbing — playhead sweeps automatically only.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Change accent color from '#5ad1a0' to '#7c3aed', increase event count N to 16, and slow the sweep duration DUR from 8200 to 12000. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.

Safe to edit

  • accent color (AC='#5ad1a0')
  • event count (N=11)
  • sweep duration (DUR=8200)
  • arc span angles (T0, T1)
  • ribbon fill opacity (rgba 0.10)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • DPR-aware canvas sizing
  • visibilitychange pause/resume
  • prefers-reduced-motion static fallback (frame(1))
  • IIFE wrapper
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • Background color hardcoded in CSS — must edit --ch09-bg to change from dark navy
  • No user scrubbing; playhead is purely auto-animated
  • Seeded random events are fixed — changing N requires re-tuning the seed loop

arctimelinecanvasdata-vizplayheadribbondark-theme

More Charts & Flow components

  • Sankey FlowThree-stage Sankey diagram on dark canvas: bezier ribbons grow stage-by-stage from origins to hubs to outcomes, pulsing softly in opacity to show flow volume.
  • Chord DiagramEight ring nodes with curved ribbons that swell and shrink as weights rebalance every ~3s. Additive blending creates glowing color overlaps.
  • Treemap7 rounded cells partition the canvas via slice-dice treemap; cells lerp to new sizes every 2.6 s as synthetic values drift, with a subtle alpha pulse.
  • CandlesticksGreen and red OHLC candles stream in from the right with smooth slide animation; newest candle grows from pivot. Dashed last-price marker traces horizontally.
  • StreamgraphSix translucent stacked bands breathe around a central baseline via layered sines; a sweeping readout line tracks across with colored tick dots per band.
  • Sparkline GridNine teal sparklines in a 3x3 grid scroll leftward every 140ms; orange/blue diamonds mark running max/min and a halo dot tracks the latest value.