Exemplo n.º 1
0
        /// <summary>
        /// Exports a beam to IFC beam.
        /// </summary>
        /// <param name="exporterIFC">
        /// The ExporterIFC object.
        /// </param>
        /// <param name="element">
        /// The element to be exported.
        /// </param>
        /// <param name="geometryElement">
        /// The geometry element.
        /// </param>
        /// <param name="productWrapper">
        /// The ProductWrapper.
        /// </param>
        public static void ExportBeam(ExporterIFC exporterIFC,
                                      Element element, GeometryElement geometryElement, ProductWrapper productWrapper)
        {
            if (geometryElement == null)
            {
                return;
            }

            IFCFile file  = exporterIFC.GetFile();
            double  scale = exporterIFC.LinearScale;

            using (IFCTransaction transaction = new IFCTransaction(file))
            {
                LocationCurve locCurve  = element.Location as LocationCurve;
                Transform     orientTrf = Transform.Identity;

                bool         canExportAxis = (locCurve != null);
                IFCAnyHandle axisRep       = null;

                XYZ   beamDirection = null;
                XYZ   projDir       = null;
                Curve curve         = null;

                Plane plane = null;
                if (canExportAxis)
                {
                    curve = locCurve.Curve;
                    if (curve is Line)
                    {
                        Line line = curve as Line;
                        XYZ  planeY, planeOrig;
                        planeOrig     = line.get_EndPoint(0);
                        beamDirection = line.Direction;
                        if (Math.Abs(beamDirection.Z) < 0.707)  // approx 1.0/sqrt(2.0)
                        {
                            planeY = XYZ.BasisZ.CrossProduct(beamDirection);
                        }
                        else
                        {
                            planeY = XYZ.BasisX.CrossProduct(beamDirection);
                        }
                        planeY           = planeY.Normalize();
                        projDir          = beamDirection.CrossProduct(planeY);
                        plane            = new Plane(beamDirection, planeY, planeOrig);
                        orientTrf.BasisX = beamDirection; orientTrf.BasisY = planeY; orientTrf.BasisZ = projDir; orientTrf.Origin = planeOrig;
                    }
                    else if (curve is Arc)
                    {
                        XYZ yDir, center;
                        Arc arc = curve as Arc;
                        beamDirection    = arc.XDirection; yDir = arc.YDirection; projDir = arc.Normal; center = arc.Center;
                        plane            = new Plane(beamDirection, yDir, center);
                        orientTrf.BasisX = beamDirection; orientTrf.BasisY = yDir; orientTrf.BasisZ = projDir; orientTrf.Origin = center;
                    }
                    else
                    {
                        canExportAxis = false;
                    }
                }

                using (IFCPlacementSetter setter = IFCPlacementSetter.Create(exporterIFC, element, null, canExportAxis ? orientTrf : null, ExporterUtil.GetBaseLevelIdForElement(element)))
                {
                    IFCAnyHandle          localPlacement = setter.GetPlacement();
                    SolidMeshGeometryInfo solidMeshInfo  = GeometryUtil.GetSplitSolidMeshGeometry(geometryElement);

                    using (IFCExtrusionCreationData extrusionCreationData = new IFCExtrusionCreationData())
                    {
                        extrusionCreationData.SetLocalPlacement(localPlacement);
                        if (canExportAxis && (orientTrf.BasisX != null))
                        {
                            extrusionCreationData.CustomAxis            = beamDirection;
                            extrusionCreationData.PossibleExtrusionAxes = IFCExtrusionAxes.TryCustom;
                        }
                        else
                        {
                            extrusionCreationData.PossibleExtrusionAxes = IFCExtrusionAxes.TryXY;
                        }

                        IList <Solid> solids = solidMeshInfo.GetSolids();
                        IList <Mesh>  meshes = solidMeshInfo.GetMeshes();

                        ElementId catId = CategoryUtil.GetSafeCategoryId(element);

                        // The representation handle generated from one of the methods below.
                        IFCAnyHandle repHnd = null;

                        // The list of materials in the solids or meshes.
                        ICollection <ElementId> materialIds = new HashSet <ElementId>();

                        // There may be an offset to make the local coordinate system
                        // be near the origin.  This offset will be used to move the axis to the new LCS.
                        Transform offsetTransform = null;

                        // If we have a beam with a Linear location line that only has one solid geometry,
                        // we will try to use the ExtrusionAnalyzer to generate an extrusion with 0 or more clippings.
                        // This code is currently limited in that it will not process beams with openings, so we
                        // use other methods below if this one fails.
                        if (solids.Count == 1 && meshes.Count == 0 && (canExportAxis && (curve is Line)))
                        {
                            bool completelyClipped;
                            beamDirection = orientTrf.BasisX;
                            Plane beamExtrusionPlane = new Plane(orientTrf.BasisY, orientTrf.BasisZ, orientTrf.Origin);
                            repHnd = ExtrusionExporter.CreateExtrusionWithClipping(exporterIFC, element,
                                                                                   catId, solids[0], beamExtrusionPlane, beamDirection, null, out completelyClipped);
                            if (completelyClipped)
                            {
                                return;
                            }

                            if (!IFCAnyHandleUtil.IsNullOrHasNoValue(repHnd))
                            {
                                // This is used by the BeamSlopeCalculator.  This should probably be generated automatically by
                                // CreateExtrusionWithClipping.
                                IFCExtrusionBasis bestAxis = (Math.Abs(beamDirection[0]) > Math.Abs(beamDirection[1])) ?
                                                             IFCExtrusionBasis.BasisX : IFCExtrusionBasis.BasisY;
                                extrusionCreationData.Slope = GeometryUtil.GetSimpleExtrusionSlope(beamDirection, bestAxis);
                                ElementId materialId = BodyExporter.GetBestMaterialIdFromGeometryOrParameter(solids[0], exporterIFC, element);
                                if (materialId != ElementId.InvalidElementId)
                                {
                                    materialIds.Add(materialId);
                                }
                            }
                        }

                        if (IFCAnyHandleUtil.IsNullOrHasNoValue(repHnd))
                        {
                            BodyData bodyData = null;

                            BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true);
                            if (solids.Count > 0 || meshes.Count > 0)
                            {
                                bodyData = BodyExporter.ExportBody(exporterIFC, element, catId, ElementId.InvalidElementId,
                                                                   solids, meshes, bodyExporterOptions, extrusionCreationData);
                            }
                            else
                            {
                                IList <GeometryObject> geomlist = new List <GeometryObject>();
                                geomlist.Add(geometryElement);
                                bodyData = BodyExporter.ExportBody(exporterIFC, element, catId, ElementId.InvalidElementId,
                                                                   geomlist, bodyExporterOptions, extrusionCreationData);
                            }
                            repHnd          = bodyData.RepresentationHnd;
                            materialIds     = bodyData.MaterialIds;
                            offsetTransform = bodyData.OffsetTransform;
                        }

                        if (IFCAnyHandleUtil.IsNullOrHasNoValue(repHnd))
                        {
                            extrusionCreationData.ClearOpenings();
                            return;
                        }

                        IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();

                        if (canExportAxis)
                        {
                            XYZ curveOffset = new XYZ(0, 0, 0);
                            if (offsetTransform != null)
                            {
                                curveOffset = -offsetTransform.Origin / scale;
                            }
                            else
                            {
                                // Note that we do not have to have any scaling adjustment here, since the curve origin is in the
                                // same internal coordinate system as the curve.
                                curveOffset = -plane.Origin;
                            }

                            Plane           offsetPlane = new Plane(plane.XVec, plane.YVec, XYZ.Zero);
                            IFCGeometryInfo info        = IFCGeometryInfo.CreateCurveGeometryInfo(exporterIFC, offsetPlane, projDir, false);
                            ExporterIFCUtils.CollectGeometryInfo(exporterIFC, info, curve, curveOffset, true);

                            IList <IFCAnyHandle> axis_items = info.GetCurves();

                            if (axis_items.Count > 0)
                            {
                                string identifierOpt         = "Axis";    // this is by IFC2x2 convention, not temporary
                                string representationTypeOpt = "Curve2D"; // this is by IFC2x2 convention, not temporary
                                axisRep = RepresentationUtil.CreateShapeRepresentation(exporterIFC, element, catId, exporterIFC.Get3DContextHandle(identifierOpt),
                                                                                       identifierOpt, representationTypeOpt, axis_items);
                                representations.Add(axisRep);
                            }
                        }
                        representations.Add(repHnd);

                        Transform    boundingBoxTrf = (offsetTransform == null) ? Transform.Identity : offsetTransform.Inverse;
                        IFCAnyHandle boundingBoxRep = BoundingBoxExporter.ExportBoundingBox(exporterIFC, geometryElement, boundingBoxTrf);
                        if (boundingBoxRep != null)
                        {
                            representations.Add(boundingBoxRep);
                        }

                        IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);

                        string instanceGUID        = GUIDUtil.CreateGUID(element);
                        string instanceName        = NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element));
                        string instanceDescription = NamingUtil.GetDescriptionOverride(element, null);
                        string instanceObjectType  = NamingUtil.GetObjectTypeOverride(element, NamingUtil.CreateIFCObjectName(exporterIFC, element));
                        string instanceTag         = NamingUtil.GetTagOverride(element, NamingUtil.CreateIFCElementId(element));

                        IFCAnyHandle beam = IFCInstanceExporter.CreateBeam(file, instanceGUID, exporterIFC.GetOwnerHistoryHandle(),
                                                                           instanceName, instanceDescription, instanceObjectType, extrusionCreationData.GetLocalPlacement(), prodRep, instanceTag);

                        productWrapper.AddElement(element, beam, setter, extrusionCreationData, true);

                        OpeningUtil.CreateOpeningsIfNecessary(beam, element, extrusionCreationData, offsetTransform, exporterIFC,
                                                              extrusionCreationData.GetLocalPlacement(), setter, productWrapper);

                        FamilyTypeInfo typeInfo = new FamilyTypeInfo();
                        typeInfo.ScaledDepth          = extrusionCreationData.ScaledLength;
                        typeInfo.ScaledArea           = extrusionCreationData.ScaledArea;
                        typeInfo.ScaledInnerPerimeter = extrusionCreationData.ScaledInnerPerimeter;
                        typeInfo.ScaledOuterPerimeter = extrusionCreationData.ScaledOuterPerimeter;
                        PropertyUtil.CreateBeamColumnBaseQuantities(exporterIFC, beam, element, typeInfo);

                        if (materialIds.Count != 0)
                        {
                            CategoryUtil.CreateMaterialAssociations(exporterIFC, beam, materialIds);
                        }

                        // Register the beam's IFC handle for later use by truss and beam system export.
                        ExporterCacheManager.ElementToHandleCache.Register(element.Id, beam);
                    }
                }

                transaction.Commit();
            }
        }
        /// <summary>
        /// Exports a beam to IFC beam if it has an axis representation and only one Solid as its geometry, ideally as an extrusion, potentially with clippings and openings.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="element">The element to be exported.</param>
        /// <param name="geometryElement">The geometry element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        /// <param name="dontExport">An output value that says that the element shouldn't be exported at all.</param>
        /// <returns>The created handle.</returns>
        /// <remarks>In the original implementation, the ExportBeam function would export each beam as its own individual geometry (that is, not use representation maps).
        /// For non-standard beams, this could result in massive IFC files.  Now, we use the ExportBeamAsStandardElement function and limit its scope, and instead
        /// resort to the standard FamilyInstanceExporter.ExportFamilyInstanceAsMappedItem for more complicated objects categorized as beams.  This has the following pros and cons:
        /// Pro: possiblity for massively reduced file sizes for files containing repeated complex beam families
        /// Con: some beams that may have had an "Axis" representation before will no longer have them, although this possibility is minimized.
        /// Con: some beams that have 1 Solid and an axis, but that Solid will be heavily faceted, won't be helped by this improvement.
        /// It is intended that we phase out this routine entirely and instead teach ExportFamilyInstanceAsMappedItem how to sometimes export the Axis representation for beams.</remarks>
        public static IFCAnyHandle ExportBeamAsStandardElement(ExporterIFC exporterIFC,
                                                               Element element, GeometryElement geometryElement, ProductWrapper productWrapper, out bool dontExport)
        {
            dontExport = true;
            IList <GeometryObject> geomObjects = BeamGeometryToExport(exporterIFC, element, geometryElement, out dontExport);

            if (dontExport)
            {
                return(null);
            }

            IFCAnyHandle beam = null;
            IFCFile      file = exporterIFC.GetFile();

            using (IFCTransaction transaction = new IFCTransaction(file))
            {
                BeamAxisInfo axisInfo      = GetBeamAxisTransform(element);
                bool         canExportAxis = (axisInfo != null);

                Curve     curve         = canExportAxis ? axisInfo.Axis : null;
                XYZ       beamDirection = canExportAxis ? axisInfo.AxisDirection : null;
                Transform orientTrf     = canExportAxis ? axisInfo.LCSAsTransform : null;

                using (PlacementSetter setter = PlacementSetter.Create(exporterIFC, element, null, orientTrf))
                {
                    IFCAnyHandle localPlacement = setter.LocalPlacement;
                    using (IFCExtrusionCreationData extrusionCreationData = new IFCExtrusionCreationData())
                    {
                        extrusionCreationData.SetLocalPlacement(localPlacement);
                        if (canExportAxis && (orientTrf.BasisX != null))
                        {
                            extrusionCreationData.CustomAxis            = beamDirection;
                            extrusionCreationData.PossibleExtrusionAxes = IFCExtrusionAxes.TryCustom;
                        }
                        else
                        {
                            extrusionCreationData.PossibleExtrusionAxes = IFCExtrusionAxes.TryXY;
                        }

                        ElementId catId = CategoryUtil.GetSafeCategoryId(element);

                        // There may be an offset to make the local coordinate system
                        // be near the origin.  This offset will be used to move the axis to the new LCS.
                        Transform offsetTransform = null;

                        // The list of materials in the solids or meshes.
                        ICollection <ElementId> materialIds = null;

                        // The representation handle generated from one of the methods below.
                        BeamBodyAsExtrusionInfo extrusionInfo = CreateBeamGeometryAsExtrusion(exporterIFC, element, catId, geomObjects, axisInfo);
                        if (extrusionInfo != null && extrusionInfo.DontExport)
                        {
                            dontExport = true;
                            return(null);
                        }

                        IFCAnyHandle repHnd = (extrusionInfo != null) ? extrusionInfo.RepresentationHandle : null;

                        if (!IFCAnyHandleUtil.IsNullOrHasNoValue(repHnd))
                        {
                            materialIds = extrusionInfo.Materials;
                            extrusionCreationData.Slope = extrusionInfo.Slope;
                        }
                        else
                        {
                            // Here is where we limit the scope of how complex a case we will still try to export as a standard element.
                            // This is explicitly added so that many curved beams that can be represented by a reasonable facetation because of the
                            // SweptSolidExporter can still have an Axis representation.
                            BodyData bodyData = null;

                            BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true, ExportOptionsCache.ExportTessellationLevel.ExtraLow);
                            if (geomObjects != null && geomObjects.Count == 1 && geomObjects[0] is Solid)
                            {
                                bodyData = BodyExporter.ExportBody(exporterIFC, element, catId, ElementId.InvalidElementId,
                                                                   geomObjects[0], bodyExporterOptions, extrusionCreationData);

                                repHnd          = bodyData.RepresentationHnd;
                                materialIds     = bodyData.MaterialIds;
                                offsetTransform = bodyData.OffsetTransform;
                            }
                        }

                        if (IFCAnyHandleUtil.IsNullOrHasNoValue(repHnd))
                        {
                            extrusionCreationData.ClearOpenings();
                            return(null);
                        }

                        IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();

                        IFCAnyHandle axisRep = CreateBeamAxis(exporterIFC, element, catId, axisInfo, offsetTransform);
                        if (!IFCAnyHandleUtil.IsNullOrHasNoValue(axisRep))
                        {
                            representations.Add(axisRep);
                        }
                        representations.Add(repHnd);

                        Transform    boundingBoxTrf = (offsetTransform == null) ? Transform.Identity : offsetTransform.Inverse;
                        IFCAnyHandle boundingBoxRep = BoundingBoxExporter.ExportBoundingBox(exporterIFC, geometryElement, boundingBoxTrf);
                        if (boundingBoxRep != null)
                        {
                            representations.Add(boundingBoxRep);
                        }

                        IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);

                        string instanceGUID        = GUIDUtil.CreateGUID(element);
                        string instanceName        = NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element));
                        string instanceDescription = NamingUtil.GetDescriptionOverride(element, null);
                        string instanceObjectType  = NamingUtil.GetObjectTypeOverride(element, NamingUtil.CreateIFCObjectName(exporterIFC, element));
                        string instanceTag         = NamingUtil.GetTagOverride(element, NamingUtil.CreateIFCElementId(element));
                        string preDefinedType      = "BEAM"; // Default predefined type for Beam
                        preDefinedType = IFCValidateEntry.GetValidIFCType(element, preDefinedType);

                        beam = IFCInstanceExporter.CreateBeam(file, instanceGUID, ExporterCacheManager.OwnerHistoryHandle,
                                                              instanceName, instanceDescription, instanceObjectType, extrusionCreationData.GetLocalPlacement(), prodRep, instanceTag, preDefinedType);

                        productWrapper.AddElement(element, beam, setter, extrusionCreationData, true);

                        OpeningUtil.CreateOpeningsIfNecessary(beam, element, extrusionCreationData, offsetTransform, exporterIFC,
                                                              extrusionCreationData.GetLocalPlacement(), setter, productWrapper);

                        FamilyTypeInfo typeInfo = new FamilyTypeInfo();
                        typeInfo.ScaledDepth          = extrusionCreationData.ScaledLength;
                        typeInfo.ScaledArea           = extrusionCreationData.ScaledArea;
                        typeInfo.ScaledInnerPerimeter = extrusionCreationData.ScaledInnerPerimeter;
                        typeInfo.ScaledOuterPerimeter = extrusionCreationData.ScaledOuterPerimeter;
                        PropertyUtil.CreateBeamColumnBaseQuantities(exporterIFC, beam, element, typeInfo, null);

                        if (materialIds.Count != 0)
                        {
                            CategoryUtil.CreateMaterialAssociations(exporterIFC, beam, materialIds);
                        }

                        // Register the beam's IFC handle for later use by truss and beam system export.
                        ExporterCacheManager.ElementToHandleCache.Register(element.Id, beam);
                    }
                }

                transaction.Commit();
                return(beam);
            }
        }
Exemplo n.º 3
0
        /// <summary>
        /// Exports a beam to IFC beam if it has an axis representation and only one Solid as its geometry, ideally as an extrusion, potentially with clippings and openings.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="element">The element to be exported.</param>
        /// <param name="geometryElement">The geometry element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        /// <param name="dontExport">An output value that says that the element shouldn't be exported at all.</param>
        /// <returns>The created handle.</returns>
        /// <remarks>In the original implementation, the ExportBeam function would export each beam as its own individual geometry (that is, not use representation maps).
        /// For non-standard beams, this could result in massive IFC files.  Now, we use the ExportBeamAsStandardElement function and limit its scope, and instead
        /// resort to the standard FamilyInstanceExporter.ExportFamilyInstanceAsMappedItem for more complicated objects categorized as beams.  This has the following pros and cons:
        /// Pro: possiblity for massively reduced file sizes for files containing repeated complex beam families
        /// Con: some beams that may have had an "Axis" representation before will no longer have them, although this possibility is minimized.
        /// Con: some beams that have 1 Solid and an axis, but that Solid will be heavily faceted, won't be helped by this improvement.
        /// It is intended that we phase out this routine entirely and instead teach ExportFamilyInstanceAsMappedItem how to sometimes export the Axis representation for beams.</remarks>
        public static IFCAnyHandle ExportBeamAsStandardElement(ExporterIFC exporterIFC,
                                                               Element element, IFCExportInfoPair exportType, GeometryElement geometryElement, ProductWrapper productWrapper, out bool dontExport)
        {
            dontExport = true;
            IList <GeometryObject> geomObjects = BeamGeometryToExport(exporterIFC, element, geometryElement, out dontExport);

            if (dontExport)
            {
                return(null);
            }

            IFCAnyHandle       beam = null;
            IFCFile            file = exporterIFC.GetFile();
            MaterialAndProfile materialAndProfile = null;
            IFCAnyHandle       materialProfileSet = null;

            using (IFCTransaction transaction = new IFCTransaction(file))
            {
                BeamAxisInfo axisInfo      = GetBeamAxisTransform(element);
                bool         canExportAxis = (axisInfo != null);

                Curve     curve         = canExportAxis ? axisInfo.Axis : null;
                XYZ       beamDirection = canExportAxis ? axisInfo.AxisDirection : null;
                Transform orientTrf     = canExportAxis ? axisInfo.LCSAsTransform : null;

                // Check for containment override
                IFCAnyHandle overrideContainerHnd = null;
                ElementId    overrideContainerId  = ParameterUtil.OverrideContainmentParameter(exporterIFC, element, out overrideContainerHnd);
                using (PlacementSetter setter = PlacementSetter.Create(exporterIFC, element, null, orientTrf, overrideContainerId, overrideContainerHnd))
                {
                    IFCAnyHandle localPlacement = setter.LocalPlacement;
                    using (IFCExtrusionCreationData extrusionCreationData = new IFCExtrusionCreationData())
                    {
                        extrusionCreationData.SetLocalPlacement(localPlacement);
                        if (canExportAxis && (orientTrf.BasisX != null))
                        {
                            extrusionCreationData.CustomAxis            = beamDirection;
                            extrusionCreationData.PossibleExtrusionAxes = IFCExtrusionAxes.TryCustom;
                        }
                        else
                        {
                            extrusionCreationData.PossibleExtrusionAxes = IFCExtrusionAxes.TryXY;
                        }

                        ElementId catId = CategoryUtil.GetSafeCategoryId(element);

                        // There may be an offset to make the local coordinate system
                        // be near the origin.  This offset will be used to move the axis to the new LCS.
                        Transform offsetTransform = null;

                        // The list of materials in the solids or meshes.
                        ICollection <ElementId> materialIds = null;

                        // If the beam is a FamilyInstance, and it uses transformed FamilySymbol geometry only, then
                        // let's only try to CreateBeamGeometryAsExtrusion unsuccesfully once.  Otherwise, we can spend a lot of time trying
                        // unsuccessfully to do so.
                        bool tryToCreateBeamGeometryAsExtrusion = true;

                        //bool useFamilySymbolGeometry = (element is FamilyInstance) ? !ExporterIFCUtils.UsesInstanceGeometry(element as FamilyInstance) : false;
                        bool      useFamilySymbolGeometry = (element is FamilyInstance) ? !GeometryUtil.UsesInstanceGeometry(element as FamilyInstance) : false;
                        ElementId beamTypeId = element.GetTypeId();
                        if (useFamilySymbolGeometry)
                        {
                            tryToCreateBeamGeometryAsExtrusion = !ExporterCacheManager.CanExportBeamGeometryAsExtrusionCache.ContainsKey(beamTypeId) ||
                                                                 ExporterCacheManager.CanExportBeamGeometryAsExtrusionCache[beamTypeId];
                        }

                        // The representation handle generated from one of the methods below.
                        BeamBodyAsExtrusionInfo extrusionInfo = null;
                        if (tryToCreateBeamGeometryAsExtrusion)
                        {
                            extrusionInfo = CreateBeamGeometryAsExtrusion(exporterIFC, element, catId, geomObjects, axisInfo);
                            if (useFamilySymbolGeometry)
                            {
                                ExporterCacheManager.CanExportBeamGeometryAsExtrusionCache[beamTypeId] = (extrusionInfo != null);
                            }
                        }

                        if (extrusionInfo != null && extrusionInfo.DontExport)
                        {
                            dontExport = true;
                            return(null);
                        }

                        IFCAnyHandle repHnd = (extrusionInfo != null) ? extrusionInfo.RepresentationHandle : null;

                        if (!IFCAnyHandleUtil.IsNullOrHasNoValue(repHnd))
                        {
                            materialIds = extrusionInfo.Materials;
                            extrusionCreationData.Slope = extrusionInfo.Slope;
                        }
                        else
                        {
                            // Here is where we limit the scope of how complex a case we will still try to export as a standard element.
                            // This is explicitly added so that many curved beams that can be represented by a reasonable facetation because of the
                            // SweptSolidExporter can still have an Axis representation.
                            BodyData bodyData = null;

                            BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true, ExportOptionsCache.ExportTessellationLevel.ExtraLow);
                            if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
                            {
                                bodyExporterOptions.CollectMaterialAndProfile = false;
                            }
                            else
                            {
                                bodyExporterOptions.CollectMaterialAndProfile = true;
                            }

                            if (geomObjects != null && geomObjects.Count == 1 && geomObjects[0] is Solid)
                            {
                                bodyData = BodyExporter.ExportBody(exporterIFC, element, catId, ElementId.InvalidElementId,
                                                                   geomObjects[0], bodyExporterOptions, extrusionCreationData);

                                repHnd      = bodyData.RepresentationHnd;
                                materialIds = bodyData.MaterialIds;
                                if (!bodyData.OffsetTransform.IsIdentity)
                                {
                                    offsetTransform = bodyData.OffsetTransform;
                                }
                                materialAndProfile = bodyData.MaterialAndProfile;
                            }
                        }

                        if (IFCAnyHandleUtil.IsNullOrHasNoValue(repHnd))
                        {
                            extrusionCreationData.ClearOpenings();
                            return(null);
                        }

                        IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();
                        IFCAnyHandle         axisRep         = CreateBeamAxis(exporterIFC, element, catId, axisInfo, offsetTransform);
                        if (!IFCAnyHandleUtil.IsNullOrHasNoValue(axisRep))
                        {
                            representations.Add(axisRep);
                        }
                        representations.Add(repHnd);

                        Transform    boundingBoxTrf = (offsetTransform == null) ? Transform.Identity : offsetTransform.Inverse;
                        IFCAnyHandle boundingBoxRep = BoundingBoxExporter.ExportBoundingBox(exporterIFC, geometryElement, boundingBoxTrf);
                        if (boundingBoxRep != null)
                        {
                            representations.Add(boundingBoxRep);
                        }

                        IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);

                        string instanceGUID = GUIDUtil.CreateGUID(element);
                        beam = IFCInstanceExporter.CreateBeam(exporterIFC, element, instanceGUID, ExporterCacheManager.OwnerHistoryHandle, extrusionCreationData.GetLocalPlacement(), prodRep, exportType.ValidatedPredefinedType);


                        IFCAnyHandle mpSetUsage;
                        if (materialProfileSet != null)
                        {
                            mpSetUsage = IFCInstanceExporter.CreateMaterialProfileSetUsage(file, materialProfileSet, null, null);
                        }

                        productWrapper.AddElement(element, beam, setter, extrusionCreationData, true, exportType);

                        ExportBeamType(exporterIFC, productWrapper, beam, element, exportType.ValidatedPredefinedType);

                        OpeningUtil.CreateOpeningsIfNecessary(beam, element, extrusionCreationData, offsetTransform, exporterIFC,
                                                              extrusionCreationData.GetLocalPlacement(), setter, productWrapper);

                        FamilyTypeInfo typeInfo = new FamilyTypeInfo();
                        typeInfo.ScaledDepth          = extrusionCreationData.ScaledLength;
                        typeInfo.ScaledArea           = extrusionCreationData.ScaledArea;
                        typeInfo.ScaledInnerPerimeter = extrusionCreationData.ScaledInnerPerimeter;
                        typeInfo.ScaledOuterPerimeter = extrusionCreationData.ScaledOuterPerimeter;
                        PropertyUtil.CreateBeamColumnBaseQuantities(exporterIFC, beam, element, typeInfo, null);

                        if (materialIds.Count != 0)
                        {
                            CategoryUtil.CreateMaterialAssociation(exporterIFC, beam, materialIds);
                        }

                        // Register the beam's IFC handle for later use by truss and beam system export.
                        ExporterCacheManager.ElementToHandleCache.Register(element.Id, beam, exportType);
                    }
                }

                transaction.Commit();
                return(beam);
            }
        }