From 3de529ef50ec67c454500ff013e556b46a220a01 Mon Sep 17 00:00:00 2001 From: A Charlwood Date: Mon, 9 Feb 2026 10:38:57 +0000 Subject: [PATCH] Mark Task 2 complete, update progress log Co-Authored-By: Claude Opus 4.6 --- IMPLEMENTATION_PLAN.md | 2 +- progress.txt | 14 ++++++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/IMPLEMENTATION_PLAN.md b/IMPLEMENTATION_PLAN.md index ff439ad..f6aaa9e 100644 --- a/IMPLEMENTATION_PLAN.md +++ b/IMPLEMENTATION_PLAN.md @@ -38,7 +38,7 @@ After the final line appears, wait 400ms, then remove the blinking cursor. The entire boot sequence should take approximately 4 seconds total. The boot screen sits on top of the final CV content (which is already in the DOM but hidden behind the boot screen). -- [ ] **Task 2: Build the ECG flatline and first heartbeat** +- [x] **Task 2: Build the ECG flatline and first heartbeat** After the boot sequence completes, fade the boot text to `opacity: 0` over `800ms`. Once faded, the black background remains. Create a full-viewport `` element overlaying the boot screen (`position: fixed; inset: 0; z-index: 1001;`). diff --git a/progress.txt b/progress.txt index 6b9a783..1eb8461 100644 --- a/progress.txt +++ b/progress.txt @@ -13,6 +13,10 @@ - SVG circle skill gauges: circumference = 2*PI*r. stroke-dashoffset = circumference * (1 - level/100). rotate(-90deg) to start from top. - Google Fonts: Plus Jakarta Sans, Inter Tight. - Floating pill nav: NOT full width. max-width 600px, margin: 12px auto, border-radius 100px. +- ECG overlay: #ecg-overlay div at z-index 1001. SVG created dynamically with viewBox matching viewport dimensions. +- drawHeartbeat(svg, svgNS, vw, vh, cy, rHeight, color, duration, onComplete) — reusable PQRST waveform renderer. rHeight controls R peak amplitude. color and duration are per-beat customisable. +- finishECGPhase() handles cleanup: fades ECG lines, transitions boot bg to white, removes overlays, reveals CV. Task 3 will replace the call to this with expanded branching logic. +- requestAnimationFrame needed before setting CSS transitions on dynamically created SVG elements. ## Iteration Log @@ -24,3 +28,13 @@ - Temporary: boot screen hides directly after fade (Task 2 will insert ECG phase between fade and reveal) - CSS variables, all 3 Google Font families loaded, IIFE strict mode JS - Learnings: setTimeout delay argument is evaluated at call-time, not in the closure callback, so using a cumulative var in forEach works correctly for staggered timing + +### Iteration 2 — Task 2: Build the ECG flatline and first heartbeat +- Added ECG overlay phase between boot fade and CV reveal +- Flatline draws left-to-right (1000ms linear) using SVG stroke-dasharray/dashoffset +- First PQRST heartbeat (R peak 40px) draws over 600ms at viewport center +- drawHeartbeat() is a reusable function accepting: svg, svgNS, vw, vh, cy, rHeight, color, duration, onComplete callback — Task 3 calls this with different amplitudes +- finishECGPhase() is a temporary cleanup function that Task 3 will replace with expanded logic (2nd/3rd beats + branching) +- Timing: boot ~4s + ECG ~2.4s = ~6.4s total (within 8-9s guardrail) +- Learnings: SVG paths created via createElementNS need the SVG namespace 'http://www.w3.org/2000/svg'. requestAnimationFrame is needed before setting CSS transitions on dynamically created SVG elements to ensure the initial state is painted first. +- The ECG overlay z-index is 1001 (above boot screen at 1000) so the lines render on top of the black background