Charts & Flow
Treemap
7 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.
canvasmedium complexitymoderate motion
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Worth keeping?
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When to use it
Dashboard hero tiles, data-viz demos, or ambient backgrounds needing a structured chart feel without real data wiring.
When not to
Contexts requiring real data input or interaction — values are synthetic and auto-cycling only; no click or hover API exposed.
Working with an AI agent
Every component ships agent-ready metadata. An example instruction for this one:
Change N to 5 categories, set period to 4000 for slower transitions, and swap --ch03-c0 to #ff6b6b for a warm red accent. 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
- category count (N=7)
- update period (period=2600ms)
- palette CSS variables (--ch03-c0 through --ch03-c5)
- lerp speed (e = dt/170)
- padding ratio (0.07 factor in PAD)
- theme tokens (:root dark defaults + [data-theme=light] overrides)
Keep intact
- IIFE wrapper
- prefers-reduced-motion guard + drawOneFrame static fallback
- visibilitychange pause/resume
- DPR-aware canvas sizing
- theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)
Known limitations
- Labels (A-G) are alphabetic indices only — no real data binding
- Slice-dice algorithm can produce tall slivers for extreme value imbalances
- Background color hardcoded via --ch03-bg CSS variable; must override to change
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.
- 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.
- Bubble Pack64 mint/teal/amber/coral circles settle under gravity with collision physics; size encodes value. Large bubbles pull toward center with a breathing pulse.