From 7640e6b5ca249392cd9a4a1ed4c76bd03abb4a13 Mon Sep 17 00:00:00 2001
From: 134 <a134@134deMacBook-Pro.local>
Date: Mon, 6 Jul 2026 03:22:59 +0800
Subject: [PATCH] fix: clean product lock masks before scale adjust overlay

---
 app/api/canvas/local-edit/route.ts | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index cc187948a..78ec735f9 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -1944,8 +1944,9 @@ function filterScaleAdjustStructureComponents(params: {
 function solidifyScaleAdjustStructureMask(params: {
   box: { width: number; height: number };
   mask: Uint8Array;
+  maxPanelSpanRatio?: number;
 }) {
-  const { box, mask } = params;
+  const { box, mask, maxPanelSpanRatio = 0.86 } = params;
   const width = box.width;
   const height = box.height;
   const bridgeGap = Math.max(2, Math.round(Math.min(width, height) * 0.006));
@@ -2033,7 +2034,7 @@ function solidifyScaleAdjustStructureMask(params: {
     const density = marked / Math.max(1, span * bandHeight);
     if (
       span < width * 0.16 ||
-      span > width * 0.86 ||
+      span > width * maxPanelSpanRatio ||
       density < 0.025 ||
       density > 0.78
     ) {
@@ -2535,6 +2536,14 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
             }),
           })
         : null;
+    const protectedPersonRemovalMask =
+      protectedPersonMask ||
+      (protectedPersonSide && sameSizeCutout
+        ? buildScaleAdjustProtectedPersonGeometryMask({
+            box: { width: cutoutWidth, height: cutoutHeight },
+            side: protectedPersonSide,
+          })
+        : null);
     const sideProtectedCleanedAlpha =
       protectedPersonSide && sameSizeCutout && sourceCropRaw
         ? suppressScaleAdjustProtectedFurnitureDarkAlpha({
@@ -2548,7 +2557,7 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
         : cleanedAlpha;
     const protectedCleanedAlpha = removeScaleAdjustMaskFromAlpha({
       alphaMask: sideProtectedCleanedAlpha,
-      removeMask: protectedPersonMask,
+      removeMask: protectedPersonRemovalMask,
     });
     for (let index = 0; index < protectedCleanedAlpha.length; index += 1) {
       cleanedRaw[index * 4 + 3] = protectedCleanedAlpha[index] || 0;
@@ -2644,6 +2653,7 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
       ? solidifyScaleAdjustStructureMask({
           box: placement.sourceBox,
           mask: filteredSourceMask,
+          maxPanelSpanRatio: protectedPersonSide ? 0.96 : 0.9,
         })
       : highConfidenceSourceMask;
     const sourceWashMask = dilateScaleAdjustStructureMask({
@@ -2745,7 +2755,7 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
     const targetClipMaskPatch =
       await buildScaleAdjustOverlayClipMaskPatch(structureOverlay);
     const productLockProtectMask =
-      protectedPersonMask ||
+      protectedPersonRemovalMask ||
       (protectedPersonSide
         ? buildScaleAdjustProtectedPersonGeometryMask({
             box: placement.sourceBox,
@@ -2781,7 +2791,7 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
       placedWidth,
       protectedPersonSide,
       protectedPersonGeometryMaskApplied:
-        Boolean(productLockProtectMask) && !protectedPersonMask,
+        Boolean(protectedPersonRemovalMask) && !protectedPersonMask,
       protectedPersonMaskApplied: Boolean(protectedPersonMask),
       sameSizeCutout,
       alphaBandingStats,