From 00a6ac08df45b327e5ab3f351ed0e828d8fc89f2 Mon Sep 17 00:00:00 2001
From: 134 <a134@134deMacBook-Pro.local>
Date: Mon, 6 Jul 2026 05:11:23 +0800
Subject: [PATCH] fix: tighten product lock scale adjust clip mask

---
 app/api/canvas/local-edit/route.ts | 44 ++++++++++++++++++++++++++++--
 1 file changed, 41 insertions(+), 3 deletions(-)

diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index 552373197..5d94baec2 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -2687,6 +2687,15 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
     ) {
       return null;
     }
+    const sourceEditBaseMask = filteredSourceBbox
+      ? filteredSourceMask
+      : highConfidenceSourceMask;
+    const sourceEditMaskBbox = getScaleAdjustMaskBoundingBox({
+      height: placement.sourceBox.height,
+      mask: sourceEditBaseMask,
+      width: placement.sourceBox.width,
+    });
+    if (!sourceEditMaskBbox) return null;
     const sourceWashBaseMask = filteredSourceBbox
       ? solidifyScaleAdjustStructureMask({
           box: placement.sourceBox,
@@ -2707,15 +2716,26 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
     });
     const sourceCompositeClipMask = dilateScaleAdjustStructureMask({
       height: placement.sourceBox.height,
-      mask: sourceWashBaseMask,
+      mask: sourceEditBaseMask,
       radius: Math.max(
-        1,
+        4,
         Math.round(
-          Math.min(placement.sourceBox.width, placement.sourceBox.height) * 0.003
+          Math.min(placement.sourceBox.width, placement.sourceBox.height) *
+            (protectedPersonSide ? 0.018 : 0.014)
         )
       ),
       width: placement.sourceBox.width,
     });
+    const sourceWashMaskBbox = getScaleAdjustMaskBoundingBox({
+      height: placement.sourceBox.height,
+      mask: sourceWashMask,
+      width: placement.sourceBox.width,
+    });
+    const sourceCompositeClipBbox = getScaleAdjustMaskBoundingBox({
+      height: placement.sourceBox.height,
+      mask: sourceCompositeClipMask,
+      width: placement.sourceBox.width,
+    });
     const sourceWashPatch = await buildScaleAdjustMaskWashPatch({
       background,
       box: placement.sourceBox,
@@ -2833,7 +2853,25 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
       protectedPersonMaskApplied: Boolean(protectedPersonMask),
       sameSizeCutout,
       alphaBandingStats,
+      sourceClipAlphaRatio: Number(
+        (
+          (sourceCompositeClipBbox?.count || 0) /
+          Math.max(1, placement.sourceBox.width * placement.sourceBox.height)
+        ).toFixed(3)
+      ),
+      sourceEditAlphaRatio: Number(
+        (
+          sourceEditMaskBbox.count /
+          Math.max(1, placement.sourceBox.width * placement.sourceBox.height)
+        ).toFixed(3)
+      ),
       sourceHeight: placement.sourceBox.height,
+      sourceWashAlphaRatio: Number(
+        (
+          (sourceWashMaskBbox?.count || 0) /
+          Math.max(1, placement.sourceBox.width * placement.sourceBox.height)
+        ).toFixed(3)
+      ),
       sourceWidth: placement.sourceBox.width,
     });