From b540d3fab2579da40e0bcdb59581f83b0b742947 Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Thu, 15 Oct 2026 07:07:40 -0700
Subject: Feed wheel: after a reversal the next two notches are plain, then a
 spin winds up again. The 700 ms spell without wind-up after a turn back
 (63fc25d) also covered a spin begun inside it, so correcting the direction
 and spinning on felt slow for most of a second (Adam, 2026-10-16: "it slows
 down for a while when I don't want it to"; "overall the scrolling still isn't
 as fast"). The calm is now a count: the reversal's next two notches don't
 wind the speed up — a couple of correcting notches still travel a couple of
 notches — and from the third the wind-up is back, so a spin after a reversal
 goes as far as one from rest. tools/feed-wheel-reverse-test.js (a reversal
 plus four quick notches goes well past five plain ones, and about as far as
 five from rest).
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Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J1Kon8bxJoHRpJdSzshCkp
---
 src/app.js | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

(limited to 'src')

diff --git a/src/app.js b/src/app.js
index 5575cc5..dae7b17 100644
--- a/src/app.js
+++ b/src/app.js
@@ -6654,13 +6654,15 @@ if (INTENT_URI) {
   };
   // ---- the wheel
   // A turn back against the coast catches the page at once and is a plain
-  // notch from rest — no flight the other way, since for a moment after a
-  // reversal (CALM) notches don't wind the speed up, so a couple of
-  // correcting notches travel a couple of notches. (A spell of quarter-size
-  // "hunting" notches ramping back up was tried here and felt like a
-  // stutter and a slow patch — Adam, 2026-10-16.)
-  const CALM = 700; // ms after a reversal without wind-up
-  let calmUntil = 0; // (lastDir/lastMoveAt: the tick's, above)
+  // notch from rest — no flight the other way, since the next couple of
+  // notches after a reversal (CALM) don't wind the speed up, so a couple of
+  // correcting notches travel a couple of notches; a spin that keeps going
+  // winds up again from the third. (A spell of quarter-size "hunting"
+  // notches ramping back up was tried here and felt like a stutter and a
+  // slow patch; a 700 ms spell without wind-up after a reversal was tried
+  // too and a spin begun inside it felt slow — Adam, 2026-10-16.)
+  const CALM = 2; // notches after a reversal without wind-up
+  let calmLeft = 0; // (lastDir/lastMoveAt: the tick's, above)
   let smoothUntil = 0; // a trackpad's events were just seen: hands off
   window.addEventListener('wheel', (e) => {
     if (e.ctrlKey || e.shiftKey || e.defaultPrevented) return;
@@ -6680,7 +6682,7 @@ if (INTENT_URI) {
       // to the OLD elapsed time made the first reverse step jump. Give the
       // notch a small response now, then coast the rest of its travel.
       stop();
-      calmUntil = now + CALM;
+      calmLeft = CALM;
       const first = dir * Math.min(16, Math.abs(px * 3 / TAU) * 16);
       window.scrollBy({ top: first, behavior: 'instant' });
       lastDir = dir; lastMoveAt = now;
@@ -6690,7 +6692,7 @@ if (INTENT_URI) {
       // goes, the more each turn adds (up to 2.5x), so keeping the wheel
       // turning winds the speed up instead of settling at a stroll. From
       // rest a notch is the same push as ever.
-      const gain = now < calmUntil ? 1 : 1 + Math.min(1.5, Math.abs(v) / 4);
+      const gain = calmLeft-- > 0 ? 1 : 1 + Math.min(1.5, Math.abs(v) / 4);
       coast(v + (px * 3 * gain) / TAU, TAU);
     }
   }, { passive: false });
-- 
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