∞ forever components

Cursor & Pointer

Gooey Trail

22 pink blobs chain-follow the pointer via spring physics and merge into liquid goo through an SVG feColorMatrix filter; auto-demos a Lissajous path until first deliberate input.

css+canvasmedium complexitymoderate motionpointer

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When to use it

Creative portfolio heroes, dark-mode landing pages, or any context where a custom cursor with viscous personality adds delight.

When not to

Utility UIs where the custom cursor (cursor:none) would confuse users, or low-end mobile where canvas+SVG filter stacks strain the GPU.

Working with an AI agent

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

Adjust the existing palette tokens and effect parameters while preserving manual control. Arrow keys steer; first click/touch stops the attract path permanently for this mount. Keep demo-v1 lifecycle marker, __foreverPreview.demoEnabled initialization and forever:interactive handler. Preserve reduced motion, visibility suspension and theme switching.

Safe to edit

  • blob color (fillStyle '#ff5ca8')
  • chain length (N=22)
  • head/tail radius curve (base*0.052*k*k)
  • spring follow speed (f=0.34-i*0.006)
  • SVG goo blur amount (stdDeviation=7)
  • idle demo path (demoPoint Lissajous params)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • SVG goo filter (feGaussianBlur + feColorMatrix)
  • IIFE wrapper
  • reduced-motion static draw() fallback
  • visibilitychange pause guard
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)
  • sticky demo-v1 preview lifecycle; stop attract work, retain manual feedback and settling
  • pointer/touch takeover, keyboard access and visibility suspension
  • demo-v1 preview lifecycle: initialize demoEnabled from window.__foreverPreview and stop attract work on the window forever:interactive event; retain manual feedback, settling, cleanup and explicit sessions

Known limitations

  • cursor:none hides the system cursor globally — must be scoped carefully in multi-region layouts
  • SVG filter applied to canvas via CSS may render incorrectly in some older Safari versions
  • Control state is local to each mount; format changes preserve preview takeover but create a fresh source instance.
  • State remains local to each mounted instance; format/theme remount preserves takeover, not component values.

gooeytrailpointercanvassvg-filtermetaballcursor

More Cursor & Pointer components

  • Magnetic DotGlowing pink dot springs to the pointer; a laggy outer ring squashes along its travel, joined by a fading tendril. Self-demos via Lissajous path until…
  • Spotlight MaskRadial spotlight follows the pointer, punching through a dark veil to reveal a pink dot grid and glowing word. Auto-demos via Lissajous path until first…
  • Elastic RingGlowing pink ring trails the pointer with damped-spring physics, stretching along velocity and squashing across it. Auto-demos on a Lissajous path until…
  • Trail CometHot-pink comet spring-follows the cursor, dragging a tapering additive trail that lengthens with speed and flings spark particles. Lissajous demo stops at…
  • Ripple FieldGrid of dots ripples outward in expanding pink rings as the pointer moves; dots displace radially along each wavefront. Lissajous auto-demo until first…