API Reference > OdDg Classes > OdMaterialCallback Class > OdMaterialCallback Methods > OdMaterialCallback::getMaterialIdByExternalFaceIndex Method
OdMaterialCallback::getMaterialIdByExternalFaceIndex Method
Syntax
C++
virtual bool getMaterialIdByExternalFaceIndex(OdUInt32 uExternalFaceIndex, OdUInt64& uMaterialId) = 0;
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