Method addNormal

src/ifcgeom/IfcGeomRepresentation.h:182–186

			int addVertex(int item_index, int material_index, double X, double Y, double Z);

			void addNormal(double X, double Y, double Z) {
				normals_.push_back(X);
				normals_.push_back(Y);
				normals_.push_back(Z);
			}

			void addFace(int item_id, int style, int i0, int i1, int i2) {
				faces_.push_back(i0);