 byrongamatosandClaude Sonnet 4.6
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66aa829362
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h3d-carve-13: extract S-section lookahead helpers into src/camera.js
Partial cut (Option A) per contract ~/Feedback-harness/hive/plans/h3d-cut13-contract.md.
What moves:
- lookaheadEndTime (factory-private) — 1 beyond-subst: _measureStarts → getMeasureStarts()
- lookaheadBootstrapTime (exported)
- lookaheadComputeFretBounds (exported) — uses lowerBoundT from geometry.js (new import)
- lookaheadTargetWorldX (exported)
DI delta: +9 params to createCamera()
Constants (+4): NFRETS=24, CAM_LOOKAHEAD_MEASURES=9, CAM_LOOKAHEAD_SEC=3.0, CAM_FRET_EDGE_BLEND=0.1
Getter (+1): getMeasureStarts: () => _measureStarts
Fn refs (+4): validString, getChartAnchorAt, xFretMid, xFret
Total createCamera() DI: 57 (was 48)
Deferred to cut 15 (U-section entanglement):
lookaheadSmoothCamStep, _applyNoteCamTargets — write S-section state vars
Region B (per-frame cam target block, ~90 lines) — reads 8 update() locals
Region C (song-change + bootstrap block, ~174 lines) — U-section init code
Call sites unchanged (destructured names unchanged):
lookaheadComputeFretBounds: lines 7474, 7941
lookaheadBootstrapTime: line 7939
lookaheadTargetWorldX: lines 7943, 10062
Tests: 17 new (highway_3d_camera_lookahead.test.js), 2 retargeted to cameraSrc.
Suite: 1353/1355 pass (2 pre-existing failures in unrelated test files).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014uZ169yfoFYArXz962g7KW
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2026-09-05 19:19:57 +02:00 |
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