During a STEP export with HOOPS Exchange, some NURBS conversion of the model is performed.
The same result can be reproduced by calling the AdaptAndReplace or CopyAndAdapt functions, as shown in the BrepAdaptor sample, with the following parameters:
sCopyAndAdaptBrepModelData.m_dTol = 0.; // Keep the model tolerance sCopyAndAdaptBrepModelData.m_bUseSameParam = false; sCopyAndAdaptBrepModelData.m_bForceComputeUV = true; sCopyAndAdaptBrepModelData.m_bForceCompute3D = true; sCopyAndAdaptBrepModelData.m_bSplitFaces = true; sCopyAndAdaptBrepModelData.m_bSplitClosedFaces = true; sCopyAndAdaptBrepModelData.m_bDeleteCrossingUV = true; sCopyAndAdaptBrepModelData.m_bAllowUVCrossingSeams = false; sCopyAndAdaptBrepModelData.m_bForceDuplicateGeometries = true; sCopyAndAdaptBrepModelData.m_bContinueOnError = false;