GV_ShellSolid* FXObjectUtilityFuncs::GetProjectionBoost(FXGroup nodeGroup, double fPosZ)
{
	std::vector<Boost_MultiPolygon *> vProjection;

	for (const auto& pNode : nodeGroup)
	{
		Boost_MultiPolygon* projectionPolygon = new Boost_MultiPolygon(pNode->GetProjectionFromMeshPolygon(fPosZ));
		if (projectionPolygon) vProjection.push_back(projectionPolygon);

		for (const auto& iter : pNode->GetDescendants())
		{
			if (iter->GetType() == Dynamic || iter->GetType() == VirtualOpening)
			{
				Boost_MultiPolygon * projectionPolygon2 = new Boost_MultiPolygon(iter->GetProjectionFromMeshPolygon(fPosZ));
				if (projectionPolygon2) vProjection.push_back(projectionPolygon2);
			}
		}
	}
	GV_ShellSolid * pSolid = GEO2BOOST::MergeProjectionBoostPolygon(vProjection, fPosZ);
	return pSolid;
}