From f48397c58248ca338c258b1de762314926fe681f Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Wed, 18 Feb 2026 21:36:07 +0100
Subject: feat(mq_editor): movable inner bezier control points + clamp()
 refactor

- P1/P2 in amp editor now draggable horizontally; t0<t1<t2<t3 enforced
- Add clamp() to utils.js; replace all Math.max/min clamping patterns
- Cursor hints: move for P1/P2, ns-resize for P0/P3
- Remove test_fft.html
- Docs: Delete key, style.css/utils.js in architecture, bezier editor section

handoff(Claude): inner control points done, clamp() adopted everywhere

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 tools/mq_editor/mq_extract.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/mq_editor/mq_extract.js')

diff --git a/tools/mq_editor/mq_extract.js b/tools/mq_editor/mq_extract.js
index 18897fb..42215d3 100644
--- a/tools/mq_editor/mq_extract.js
+++ b/tools/mq_editor/mq_extract.js
@@ -451,7 +451,7 @@ function trackIsoContour(stftCache, seedTime, seedFreq, params) {
   }
 
   const seedFrame = stftCache.getFrameAtIndex(seedFrameIdx);
-  const seedBin   = Math.max(1, Math.min(halfBins - 2, Math.round(seedFreq / binHz)));
+  const seedBin   = clamp(Math.round(seedFreq / binHz), 1, halfBins - 2);
   const targetSq  = seedFrame.squaredAmplitude[seedBin];
   if (targetSq <= 0) return null;
   const targetDB  = 10 * Math.log10(targetSq);
-- 
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