C++ (Cpp) AcDb3dSolid::extrudeAlongPath Examples

Example #1

File: PDEcone.cpp Project: wangfeilong321/PDMS_ExportModel

//  [9/5/2007 suzhiyong]
Acad::ErrorStatus PDEcone::explodeTo3DSolid(AcDb3dSolid* &p3dSolid) const
{
	assertReadEnabled();

#ifdef _OBJECTARX2004_
	Acad::ErrorStatus es = Acad::eOk;
	int i = 0;
	AcGeVector3d faceVect = getFaceVect();

	AcDbCurve *pCurve = NULL;
	AcDbVoidPtrArray curveSegments;
	double pathLen = m_ptStart.distanceTo(m_ptEnd);

	AcGePoint3d sp, ep;
	double d1, d2;
	if(m_dDiameter1 >= m_dDiameter2)
	{
		sp = m_ptStart;
		ep = m_ptEnd;
		d1 = m_dDiameter1;
		d2 = m_dDiameter2;
	}
	else
	{
		sp = m_ptEnd;
		ep = m_ptStart;
		d1 = m_dDiameter2;
		d2 = m_dDiameter1;
	}

	//extrudeAlongPath函数在由较大region拉成较小region时容易产生自交问题，所以
	//炸开时选择由小的region拉成大的region
	AcDbLine *pLine = new AcDbLine(ep, sp);
    pLine->setPropertiesFrom(this);
	pCurve = pLine;

	if(pCurve != NULL)
	{
		if((es = addToDb(pCurve)) == Acad::eOk)
		{
			AcDbObjectId id;
			id = pCurve->objectId();
			pCurve->close();
			if((es = acdbOpenObject((AcDbCurve*&)pCurve, id, AcDb::kForRead)) != Acad::eOk)
				return Acad::eNotApplicable;
		}
		else
		{
			if(pCurve != NULL)
				delete pCurve;
			return Acad::eNotApplicable;
		}
	}

	AcDbCircle sCir(ep, faceVect, d2 / 2.0);
	curveSegments.append(&sCir);

	AcDbVoidPtrArray regions;
	es = AcDbRegion::createFromCurves(curveSegments, regions);

	if(es == Acad::eOk && !regions.isEmpty())
	{
		AcDb3dSolid *pBody;
		pBody = new AcDb3dSolid;

		////求taper Angle
		//AcGeVector3d vec1 = (m_ptStart-m_ptEnd);//.normal();

		////m_dDiameter1和m_dDiameter2的大小问题
		//AcGeVector3d perpVec = faceVect.perpVector()*((m_dDiameter1/2-m_dDiameter2/2));
		//AcGePoint3d point2(m_ptStart.x+perpVec.x, m_ptStart.y+perpVec.y, m_ptStart.z+perpVec.z);
		//AcGeVector3d vec2 = (point2 - m_ptEnd);//.normal();

		////taperAngle为负时表示放大region，反之为缩小
		//double angle = -1*vec1.angleTo(vec2);
		////angle没有到达最大值时仍然有问题，建议不使用extrudeAlongPath函数

		//taperAngle是指两个圆心连线垂直于圆面时的角度，大于0时表示缩小，小于0时表示放大
		es = pBody->extrudeAlongPath((AcDbRegion*)(regions[0]), pCurve,//angle);
			-1*atan((d1 / 2.0 - d2 / 2.0) / pathLen));

		if(es != Acad::eOk)
		{
			if(pCurve != NULL)
			{
				pCurve->upgradeOpen();
				pCurve->erase();
				pCurve->close();
			}
			delete pBody;
			for(i = 0; i < regions.length(); i++)
				delete (AcRxObject*)regions[i];
			return Acad::eNotApplicable;
		}
		pBody->setPropertiesFrom(this);
		p3dSolid = pBody;
	}
	else
	{
		if(pCurve != NULL)
		{
			pCurve->upgradeOpen();
			pCurve->erase();
			pCurve->close();
		}
		for(i = 0; i < regions.length(); i++)
			delete (AcRxObject*)regions[i];
		return Acad::eNotApplicable;
	}

	if(pCurve != NULL)
	{
		pCurve->upgradeOpen();
		pCurve->erase();
		pCurve->close();
	}
	for(i = 0; i < regions.length(); i++)
		delete (AcRxObject*)regions[i];

	return Acad::eOk;
#else
	return Acad::eNotApplicable;
#endif
}