fix: brush draw pitch revisit by comparing lastDrawnPitch

app/static/js/app.jsx

@@ -5117,10 +5117,10 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, onClose, onUpdateNot
         startOffsetPitch: snapToScaleRef.current ? snapPitchToScale(pitch, selectedScaleRef.current) : pitch,
         drawNoteId: noteId,
         drawDuration: initialDur,
-        visitedPitches: snapToScaleRef.current ? [snapPitchToScale(pitch, selectedScaleRef.current)] : [pitch],
         initialBeat: start,
         initialPitch: snapToScaleRef.current ? snapPitchToScale(pitch, selectedScaleRef.current) : pitch,
-        noteStartBeats: [start]
+        noteStartBeats: [start],
+        lastDrawnPitch: snapToScaleRef.current ? snapPitchToScale(pitch, selectedScaleRef.current) : pitch
       });
       // Play the note with SoundFont
       if (window.SonicSF) {
@@ -5206,9 +5206,9 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, onClose, onUpdateNot
       return;
     }
     if (draggedNote.mode === 'draw') {
-      const visited = draggedNote.visitedPitches || [];
       const snappedPitch = snapToScaleRef.current ? snapPitchToScale(pitch, selectedScaleRef.current) : pitch;
-      const pitchChanged = !visited.includes(snappedPitch);
+      const lastPitch = draggedNote.lastDrawnPitch !== undefined ? draggedNote.lastDrawnPitch : draggedNote.startOffsetPitch;
+      const pitchChanged = snappedPitch !== lastPitch;
       const noteBeats = draggedNote.noteStartBeats || [];
       const defaultDur = getSnapDuration(snapVal);
       if (pitchChanged) {
@@ -5223,7 +5223,7 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, onClose, onUpdateNot
           }));
         }
         const newNote = {
-          id: 'note_' + Date.now() + Math.random().toString(36).substr(2, 8) + '_' + (visited.length + 1),
+          id: 'note_' + Date.now() + Math.random().toString(36).substr(2, 8) + '_' + (noteBeats.length + 1),
           pitch: snappedPitch,
           start_beat: beat,
           duration_beats: defaultDur,
@@ -5233,7 +5233,7 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, onClose, onUpdateNot
         setNotes(prev => [...prev, newNote]);
         setSelectedNoteIds(prev => [...prev, newNote.id]);
         draggedNote.brushIds = [...brushIds, newNote.id];
-        draggedNote.visitedPitches = [...visited, snappedPitch];
+        draggedNote.lastDrawnPitch = snappedPitch;
         draggedNote.noteStartBeats = [...noteBeats, beat];
       } else {
         const brushIds = draggedNote.brushIds || [];

wiki.md

@@ -205,3 +205,8 @@
 - **Tóm tắt thay đổi:** (1) Thêm `noteStartBeats` array trong `draggedNote` — track start beat của từng note. Khi tạo note mới (pitchChanged), fix duration của note trước đó thành `beat - prevNoteBeat`. Khi extend (cùng pitch), chỉ extend note cuối với `beat - lastNoteBeat` (không extend toàn bộ stroke). (2) Khởi tạo `noteStartBeats: [start]` trong setDraggedNote. Fix lỗi note cuối có duration dài bằng toàn bộ brush stroke.
 - **Các file ảnh hưởng:** `app/static/js/app.jsx`
 - **Ghi chú/Test (nếu có):** `npm run build` pass.
+
+### [2026-07-26 10:55] Task: Fix brush draw pitch revisit by comparing lastDrawnPitch
+- **Tóm tắt thay đổi:** Thay `!visited.includes(snappedPitch)` bằng `snappedPitch !== lastDrawnPitch`. Bug cũ: khi vẽ C→D→C, visited.includes(C) = true → không tạo note mới → note D cũ bị extend. Fix: so sánh với pitch của note cuối cùng, cho phép vẽ tiếp khi pitch thay đổi dù đã visit trước đó. Bỏ `visitedPitches` (không còn dùng).
+- **Các file ảnh hưởng:** `app/static/js/app.jsx`
+- **Ghi chú/Test (nếu có):** `npm run build` pass.