From 4fc910d6fd60a41ce7fa2433db5e641b0af96dc2 Mon Sep 17 00:00:00 2001
From: company-desktop-computer <gjmlovexjx@gmail.com>
Date: Thu, 22 Oct 2026 10:24:54 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=9B=B2=E7=BA=BF=E9=80=9A=E9=81=93?=
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RegionFromCurvesDwgInFields 里两处：

- isRegionNull(pRegion) && isRegionNull(pRegionBig) 改为 ||，原写法要求
  两个都无效才跳过，实际 pRegionBig 此时必非空，条件恒假，无效 region
  照样进布尔运算
- booleanOper 改走已有的 rawBooleanOperWrapper，ACIS 内部异常时由 SEH
  捕获，不再直接崩 CAD

顺带 delete pRegion：arRegPtrs 不拥有对象，原来 subtract 完没有释放。

曲线通道只读，spline 参数在写端从未落盘，几何缺失无法靠读端修复，
本次只处理崩溃路径，重建逻辑与启发式保持原样。
---
 SourceCode/Code2026/CoreLibrary/AecDbEwPipeBase.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/SourceCode/Code2026/CoreLibrary/AecDbEwPipeBase.cpp b/SourceCode/Code2026/CoreLibrary/AecDbEwPipeBase.cpp
index 8317b37..9620505 100644
--- a/SourceCode/Code2026/CoreLibrary/AecDbEwPipeBase.cpp
+++ b/SourceCode/Code2026/CoreLibrary/AecDbEwPipeBase.cpp
@@ -771,17 +771,19 @@ AcDbRegion *AecDbEwPipeBase::RegionFromCurvesDwgInFields(AcDbDwgFiler *pFiler, A
 				arRegPtrs.removeAt(nPos);
 			}
 
-			Acad::ErrorStatus es;
 			for (int j = 0;j < arRegPtrs.length();j++)
 			{
 				pRegion = (AcDbRegion*)arRegPtrs.at(j);
 
-				if (isRegionNull(pRegion) && isRegionNull(pRegionBig))
+				// 任一 region 无效就跳过，无效 region 参与布尔运算可能让 ACIS 崩溃
+				if (isRegionNull(pRegion) || isRegionNull(pRegionBig))
 				{
+					delete pRegion;
 					continue;
 				}
 
-				es = pRegionBig->booleanOper(AcDb::kBoolSubtract, pRegion);
+				rawBooleanOperWrapper(pRegionBig, pRegion, AcDb::kBoolSubtract);
+				delete pRegion;
 			}
 			return pRegionBig;
 		}