* feat: random light pulse along threads + box outlines
A blurred light pulse glides along one of the 5 wave threads
(wave1/2/3, thread1/2) every 2.5-7s. Color matches the active
theme (cyan on home/portfolio/about, pink/magenta on contact).
Pulse also follows the outline of designated boxes marked with
data-trail-box:
- Home: 'Looking for inspiration?' + 'Ready to collaborate?'
- Contact: 'Waiting to hear from you' card
Boxes are rebuilt on every pulse so they stay aligned during scroll
and respect viewport (off-screen boxes are skipped).
Pulse uses requestAnimationFrame + path.getPointAtLength for native
smoothness, fade-in 15% / hold 70% / fade-out 15%, screen blend
mode so it blends with the dark background.
* feat(pulse): slower, brighter, comet-shaped pulse along paths
Slower (9-13s per glide vs 4.5-6.5s), three-layer comet shape
(soft halo + mid glow + bright core), rotated to path tangent,
ease-in-out timing, mix-blend-mode screen.
Fixes: pulse not tracking path was a parallax-offset coordinate
mismatch. Cleaned up via getSpeedKey() helper.
* fix(pulse): tone down white core so theme color dominates
Core was pure white (#ffffff) which washed out the theme color.
Now tinted (#fdf4ff for purple, #f0fdfa for cyan) and smaller
(10x3 vs 14x4) with 75% opacity so the purple/pink and cyan
glow layers come through more visibly.
* feat(pulse): double the glide duration
Threads: 18-26s (was 9-13s). Boxes: 14-18s (was 7-9s).
* feat(pulse): split into two halves around boxes
When a thread-pulse hits a data-trail-box bound, it splits:
one half glides along the top of the box outline, the other
along the bottom. They re-merge on the far side and continue
as one along the rest of the thread.
Implementation:
- Two pulse-blob groups (blob-1, blob-2) in SVG
- Box-intersection scan samples path every 4px to find entry +
exit points
- Phase 1: blob-1 glides from start to entry
- Phase 2: blob-1 follows top-half of box outline, blob-2
follows bottom-half (both spawned dynamically)
- Phase 3: blob-1 continues from exit to end, blob-2 hides
- Velocity kept constant across phases so split makes the
animation longer rather than faster
* fix(pulse): remove direct box-pulses + smooth split transition
Two fixes after review:
1. Removed runBoxPulse() entirely. Pulses now spawn ONLY on the
5 wave threads. Box outlines are followed only via the split
mechanism when a thread-pulse intersects a box.
2. Smooth split transition via Bezier curves: split-path now
starts at the EXACT thread intersection point (entryX/Y) and
ends at exact exit point, curving smoothly up/down to the box
top/bottom edge. Previously the path jumped to box.cy which
caused a visible teleport when entering the split phase.
* feat(pulse): bias 55% of pulses to threads that hit a box
Before each pulse, split wavePaths into intersecting (those
that currently cross a data-trail-box) and non-intersecting.
Roll a die: 55% of the time pick from intersecting, 45% from
non-intersecting. Falls back to the other bucket if one is
empty (e.g. no boxes visible on the page).
Linus Olofsson
d6d062a3b2