∞ forever components

SVG Animations

Stroke Draw-On

An ochre constellation draws itself via stroke-dashoffset, with anchor nodes blooming in as the line passes; the glyph holds then fades and redraws in a loop.

svgmedium complexitymoderate motion

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When to use it

Dark-mode hero backgrounds, data-viz intros, loading screens, or any ambient display needing elegant self-drawing line art.

When not to

Light backgrounds (hardcoded dark body color). Contexts needing user interaction — it runs passively with no input handling.

Working with an AI agent

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

Change the stroke color to sage (#7D8570) by updating the stroke value on .ssa01-line and .ssa01-ring, set DRAW=3500 to slow the draw-on, and add two more anchor points to P to extend the constellation. 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

  • stroke color (#A68D3F on .ssa01-line)
  • draw/hold/fade timing (DRAW=2600, HOLD=1500, FADE=900)
  • anchor points array (P)
  • node dot radius (r=2.4)
  • easing function (ease / outBack)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • IIFE wrapper
  • prefers-reduced-motion guard (static fallback)
  • visibilitychange pause logic
  • getTotalLength() + strokeDasharray/strokeDashoffset pattern
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • Light re-theme via the [data-theme=light] token block; catalog bg/accent describe the dark default
  • getTotalLength() requires the SVG to be in the DOM before calling; SSR or hidden elements will return 0

svgstrokedraw-onconstellationlooppath-animationambient

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