From 9213edb9ddc541747f719ed9c426db623df56f64 Mon Sep 17 00:00:00 2001
From: "hyojun.choi" <chlgkwk123@nate.com>
Date: Tue, 18 Feb 2025 15:14:57 +0900
Subject: [PATCH] =?UTF-8?q?=EB=B3=80=EB=B3=84=EB=A1=9C=20=EC=84=A4?=
 =?UTF-8?q?=EC=A0=95=20=EC=8B=9C=20=EC=98=A4=EB=A5=98=20=EC=88=98=EC=A0=95?=
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---
 src/hooks/roofcover/useRoofShapeSetting.js | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/hooks/roofcover/useRoofShapeSetting.js b/src/hooks/roofcover/useRoofShapeSetting.js
index b4909170..178f7da8 100644
--- a/src/hooks/roofcover/useRoofShapeSetting.js
+++ b/src/hooks/roofcover/useRoofShapeSetting.js
@@ -735,32 +735,36 @@ export function useRoofShapeSetting(id) {
     const index = lines.findIndex((line) => line.idx === selectedLine.idx)
 
     const nextLine = lines[index + 1] || lines[0]
+    history.current.push(selectedLine)
     if (nextLine.attributes?.isFixed) {
       canvas.discardActiveObject()
       return
     }
-    history.current.push(selectedLine)
+
     canvas.setActiveObject(nextLine)
   }
 
   // 변별로 설정 내 일변 전으로 돌아가기
   const handleRollBack = () => {
     if (history.current.length === 0) {
+      canvas.discardActiveObject()
       return
     }
     const lastLine = history.current.pop()
+    canvas.setActiveObject(lastLine)
 
-    currentObject.set({
+    currentObject?.set({
       stroke: '#000000',
       strokeWidth: 4,
+      attributes: { isFixed: false },
     })
 
     lastLine.set({
       stroke: '#000000',
       strokeWidth: 4,
+      attributes: { isFixed: false },
     })
 
-    canvas.setActiveObject(lastLine)
     canvas.renderAll()
   }