[CE update 6 sdk ]用 BodyFromLoft创建放样实体时总是不成功，麻烦老师帮忙看一下错在哪里？

Question

试着写了个简单的代码，就是根据两个圆界面和一根导向线用 BodyFromLoft放样生成实体，总是不成功。 
 麻烦老师帮忙看一下错在哪里？代码如下： 
 void createLoftSolid(WCharCP /*unparsed*/)
{
	DPoint3d basePt1, basePt2;
	basePt1 = basePt1.From(0, 0, 0);
	basePt2 = basePt2.From(0, 0, 500);

	//构建要放样的两个圆截面
	DPoint3d normal;
	normal = normal.From(0.0, 0.0, 1.0);
	DEllipse3d circle1, circle2;
	circle1.InitFromCenterNormalRadius(basePt1, (DVec3dCR)normal, 500);
	circle2.InitFromCenterNormalRadius(basePt2, (DVec3dCR)normal, 300);

	//构建放样的导向线
	DPoint3d Pts[2];
	Pts[0].x = 500; Pts[0].y = 0; Pts[0].z = 0;
	Pts[1].x = 300; Pts[1].y = 0; Pts[1].z = 500;
	bvector<DPoint3d> LinePts;
	LinePts.push_back(Pts[0]);
	LinePts.push_back(Pts[1]);
	ICurvePrimitivePtr GuideLinePtr = ICurvePrimitive::CreateLineString(LinePts);
	CurveVectorPtr GuideLineVectorPtr = CurveVector::Create(CurveVector::BOUNDARY_TYPE_Open);
	GuideLineVectorPtr->push_back(GuideLinePtr);

	ICurvePrimitivePtr pCirclePtr1 = ICurvePrimitive::CreateArc(circle1);
	ICurvePrimitivePtr pCirclePtr2 = ICurvePrimitive::CreateArc(circle2);
	CurveVectorPtr ArcVectorPtr = CurveVector::Create(CurveVector::BOUNDARY_TYPE_None);
	ArcVectorPtr->Add(pCirclePtr1);
	ArcVectorPtr->Add(pCirclePtr2);

	ISolidKernelEntityPtr loftSolid;
	EditElementHandle loftSolidEEh;
	//根据两个圆截面及导向线进行放样生成实体
	if (SUCCESS == SolidUtil::Create::BodyFromLoft(loftSolid, &ArcVectorPtr, ArcVectorPtr->size(), &GuideLineVectorPtr, GuideLineVectorPtr->size(), *ACTIVEMODEL,true, false))
	{
 Bentley::DgnPlatform::DraftingElementSchema::ToElement(loftSolidEEh, *loftSolid, nullptr, *ACTIVEMODEL);
 loftSolidEEh.AddToModel();
	}
}

Yongan.Fu · Accepted Answer

管工：你好！ 
 我之前曾写过一个测试代码是能运行成功的。供你参考。你的代码我看还有一个地方不正确，就是关于BodyFromLoft的第二个参数，它应该是一个CurveVectorPtr的数组，每个分量表达一个截面，而不是像你现在那样将两个截面都加入到一个CurveVector中。 
 void solidCreate(WCharCP unparsed)
 {
 // 1 ---- Prepare Data
 bvector <DPoint3d> profilePts[3];
 profilePts[0].push_back({ -1400000.0, 0.0, 500000.0 });
 profilePts[0].push_back({ -1400000.0, 500000.0, -500000.0 });
 profilePts[0].push_back({ -1400000.0, -500000.0, -500000.0 });
 //profilePts[0].push_back({ -1400000.0, 0.0, 500000.0 });
 profilePts[1].push_back({ 0.0, 0.0, 0.0 });
 profilePts[1].push_back({ 0, 300000.0, -500000.0 });
 profilePts[1].push_back({ 0, -250000.0, -500000.0 });
 //profilePts[1].push_back({ 0.0, 0.0, 0.0 });
 profilePts[2].push_back({ 1400000.0, 0.0, 500000.0 });
 profilePts[2].push_back({ 1400000.0, 500000.0, -500000.0 });
 profilePts[2].push_back({ 1400000.0, -500000.0, -500000.0 });
 //profilePts[2].push_back({ 1400000.0, 0.0, 500000.0 });
 DEllipse3d arcPts;
 arcPts.InitFromPointsOnArc({ -1400000.0, 0.0, 500000.0 }, { 0, 0, 0 }, { 1400000.0, 0.0, 500000.0 });

 // 2 ---- Create CurveVector
 CurveVectorPtr profileVec[3]; 
 //BOUNDARY_TYPE_Outer is important, it can create a closed profile that further makes a solid instead of a sheet
 profileVec[0] = CurveVector::CreateLinear(profilePts[0], CurveVector::BOUNDARY_TYPE_Outer);
 profileVec[1] = CurveVector::CreateLinear(profilePts[1], CurveVector::BOUNDARY_TYPE_Outer);
 profileVec[2] = CurveVector::CreateLinear(profilePts[2], CurveVector::BOUNDARY_TYPE_Outer);

 ICurvePrimitivePtr arc = ICurvePrimitive::CreateArc(arcPts);
 CurveVectorPtr guideVec = CurveVector::Create(CurveVector::BOUNDARY_TYPE_Open);
 guideVec->Add(arc);

 // 3 ---- Create Solid by Loft
 ISolidKernelEntityPtr solid;
 DgnModelP pActiveModel = ISessionMgr::GetActiveDgnModelP();
 if (SUCCESS != SolidUtil::Create::BodyFromLoft(solid, profileVec, 3, &guideVec, 1, *pActiveModel, false, true))
 {
 mdlDialog_dmsgsPrint(L"Error in BodyFromLoft");
 return;
 }

 // 4 ---- Convert Solid to EditElementHandle and add it to model
 if (solid.IsValid())
 {
 EditElementHandle eeh;
 SolidUtil::Convert::BodyToElement(eeh, *solid, nullptr, *pActiveModel);
 //DraftingElementSchema::ToElement(eeh, *solid, nullptr, *pActiveModel);
 eeh.AddToModel();
 }
 }

Yongan.Fu · Answer

生成的图形如下： 
 
 此种情况下guideLine为弧线才有作用，如果不给的话，三个截面间的过渡将会是直线过渡。对于你的情况，其实guideLine参数可忽略。

[CE update 6 sdk ]用 BodyFromLoft创建放样实体时总是不成功，麻烦老师帮忙看一下错在哪里？

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