diff --git a/SourceCode/Code2026/AecRxBase/GiDrawUtility.cpp b/SourceCode/Code2026/AecRxBase/GiDrawUtility.cpp
index ea4b36b..59c5931 100644
--- a/SourceCode/Code2026/AecRxBase/GiDrawUtility.cpp
+++ b/SourceCode/Code2026/AecRxBase/GiDrawUtility.cpp
@@ -154,6 +154,65 @@ namespace
 		p->makeClosed();
 		return p;
 	}
+
+	// 分段长度大于max取max，小于max，取min
+	int spliteCurve(const AcDbCurve *pCurve, const double &max, const double &min, AcDbVoidPtrArray &ar)
+	{
+		Acad::ErrorStatus es;
+
+		double dEnd = 0.0, dLen = 0.0, dSplitLen = 100000.0;
+		es = pCurve->getEndParam(dEnd);
+		if (es != Acad::eOk) return 0;
+
+		es = pCurve->getDistAtParam(dEnd, dLen);
+		if (es != Acad::eOk) return 0;
+
+		if (dLen > max)
+			dSplitLen = max;
+		else
+			dSplitLen = min;
+
+
+		double dMax(dSplitLen), dPrec(10e-4);
+		AcGePoint3d ptStart(AcGePoint3d::kOrigin), ptEnd(AcGePoint3d::kOrigin), pt(AcGePoint3d::kOrigin);
+
+		es = pCurve->getPointAtDist(.0, ptStart);
+		if (es != Acad::eOk) return 0;
+
+		es = pCurve->getEndPoint(ptEnd);
+		if (es != Acad::eOk) return 0;
+
+		int quotient((int)(dLen / dMax));
+		double remainder(fmod(dLen, dMax));
+		if (remainder < dPrec) quotient -= 1;
+
+		AcGePoint3dArray arPts;
+
+		if (dLen - dMax > dPrec)
+		{
+			for (int i = 0; i < quotient; ++i)
+			{
+				if (pCurve->getPointAtDist((i + 1) * dMax, pt) != Acad::eOk) continue;
+				arPts.append(pt);
+			}
+		}
+
+		if (arPts.isEmpty()) return 0;
+
+		es = pCurve->getSplitCurves(arPts, ar);
+
+		return ar.length();
+	}
+
+	void deleteContainerOfArx(AcDbVoidPtrArray &ss)
+	{
+		while(!ss.isEmpty())
+		{
+			AcDbEntity *p = (AcDbEntity *)ss.last();
+			ss.removeLast();
+			delete p;
+		}
+	}
 }
 
 // 把region变换到以 vtNormal为法向，以ptOnPlan为中心的面上，并且， 将region上的点ptOnRegion与平面中心点ptOnPlan对齐
@@ -642,6 +701,10 @@ AECDLLIMPEXP AcDbEntity* GiDrawUtility::DrawCirTorus(const AcGePoint3d &ptCenter
 	, const double &startAngle
 	, const double &endAngle)
 {
+	// 小半径须小于大半径，否则截面圆半径为负，ACIS 无法生成
+	if (DOWNEQUAL_ZERO(minorRadius) || DOWNEQUAL_ZERO(majorRadius - minorRadius))
+		return NULL;
+
 	AcDbArc arc(ptCenter, vtNormal, (majorRadius + minorRadius) * .5, startAngle, endAngle);
 	AcDbCircle cir(AcGePoint3d::kOrigin, AcGeVector3d::kZAxis, (majorRadius - minorRadius) * .5);
 	return DrawPipe(&arc, &cir, AcGePoint3d::kOrigin);
@@ -655,6 +718,10 @@ AECDLLIMPEXP AcDbEntity* GiDrawUtility::DrawRectTorus(const AcGePoint3d &ptCente
 	, const double &startAngle
 	, const double &endAngle)
 {
+	// 小半径须小于大半径、高度须为正，否则截面宽度为负，ACIS 无法生成
+	if (DOWNEQUAL_ZERO(minorRadius) || DOWNEQUAL_ZERO(majorRadius - minorRadius) || DOWNEQUAL_ZERO(height))
+		return NULL;
+
 	AcDbArc arc(ptCenter, vtNormal, (majorRadius + minorRadius) * .5, startAngle, endAngle);
 
 	double dW = (majorRadius - minorRadius) * .5;
@@ -679,6 +746,9 @@ AECDLLIMPEXP AcDbEntity* GiDrawUtility::DrawDish(const double &dH	/*小半径*/
 	, const AcGePoint3d &axisPnt
 	, const AcGeVector3d &axisDir)
 {
+	// 大直径为 0 时椭圆率 2*dH/dD 无意义
+	if (DOWNEQUAL_ZERO(dD)) return NULL;
+
 	// 先构造一个（zox）面, 圆心为原点的1/4椭圆, 然后绕Z轴旋转
 	// 再转换到 axisPnt点，其中心轴（原Z轴）指向axisDir
 	AcDbEllipse elArc(AcGePoint3d::kOrigin
@@ -719,6 +789,9 @@ AcDbEntity* GiDrawUtility::DrawPipe(const AcGePoint3d& ptFrom
 	, const double &dThick
 	, const int &nSegs /*= 20*/)
 {
+	// 零长度路径无法扫掠
+	if (EQUAL_ZERO(ptFrom.distanceTo(ptTo))) return NULL;
+
 	AcDbCircle Cir1(AcGePoint3d::kOrigin, AcGeVector3d::kZAxis, dRadius);
 
 	AcDbRegion *pBig = createRegion(&Cir1);
@@ -769,65 +842,6 @@ AECDLLIMPEXP AcDbEntity* GiDrawUtility::DrawPipe(const AcDbCurve* pCurve
 	return pSolid;
 }
 
-// 分段长度大于max取max，小于max，取min
-static int spliteCurve(const AcDbCurve *pCurve, const double &max, const double &min, AcDbVoidPtrArray &ar)
-{
-	Acad::ErrorStatus es;
-
-	double dEnd = 0.0, dLen = 0.0, dSplitLen = 100000.0;
-	es = pCurve->getEndParam(dEnd);
-	if (es != Acad::eOk) return 0;
-
-	es = pCurve->getDistAtParam(dEnd, dLen);
-	if (es != Acad::eOk) return 0;
-
-	if (dLen > max)
-		dSplitLen = max;
-	else
-		dSplitLen = min;
-
-
-	double dMax(dSplitLen), dPrec(10e-4);
-	AcGePoint3d ptStart(AcGePoint3d::kOrigin), ptEnd(AcGePoint3d::kOrigin), pt(AcGePoint3d::kOrigin);
-
-	es = pCurve->getPointAtDist(.0, ptStart);
-	if (es != Acad::eOk) return 0;
-
-	es = pCurve->getEndPoint(ptEnd);
-	if (es != Acad::eOk) return 0;
-
-	int quotient((int)(dLen / dMax));
-	double remainder(fmod(dLen, dMax));
-	if (remainder < dPrec) quotient -= 1;
-
-	AcGePoint3dArray arPts;
-
-	if (dLen - dMax > dPrec)
-	{
-		for (int i = 0; i < quotient; ++i)
-		{
-			if (pCurve->getPointAtDist((i + 1) * dMax, pt) != Acad::eOk) continue;
-			arPts.append(pt);
-		}
-	}
-
-	if (arPts.isEmpty()) return 0;
-
-	es = pCurve->getSplitCurves(arPts, ar);
-
-	return ar.length();
-}
-
-static void deleteContainerOfArx(AcDbVoidPtrArray &ss)
-{
-	while(!ss.isEmpty())
-	{
-		AcDbEntity *p = (AcDbEntity *)ss.last();
-		ss.removeLast();
-		delete p;
-	}
-}
-
 AcDbEntity* GiDrawUtility::DrawPipe(const AcDbCurve* pCurve
 	, const AcDbPolyline* pPoly
 	, const AcGePoint3d& ptCenInRgn)
@@ -838,11 +852,12 @@ AcDbEntity* GiDrawUtility::DrawPipe(const AcDbCurve* pCurve
 AcDbEntity* GiDrawUtility::DrawPipe(const AcDbCurve *pCurve, double dR)
 {
 	if (!pCurve) return NULL;
+	if (DOWNEQUAL_ZERO(dR)) return NULL;
 
 	//开始切向量,向内
 	AcGePoint3d ptS;
 	AcGeVector3d vtS;
-	pCurve->getStartPoint(ptS);
+	if (Acad::eOk != pCurve->getStartPoint(ptS)) return NULL;
 	if (Acad::eOk != pCurve->getFirstDeriv(ptS, vtS)) return NULL;
 
 	AcDbCircle cir;