Ejemplo n.º 1
0
        /// <summary>
        /// Exports an element as a zone.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="element">The element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        public static void ExportZone(ExporterIFC exporterIFC, Zone element,
                                      ProductWrapper productWrapper)
        {
            if (element == null)
            {
                return;
            }

            // Check the intended IFC entity or type name is in the exclude list specified in the UI
            Common.Enums.IFCEntityType elementClassTypeEnum = Common.Enums.IFCEntityType.IfcZone;
            if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum))
            {
                return;
            }

            HashSet <IFCAnyHandle> spaceHnds = new HashSet <IFCAnyHandle>();

            SpaceSet spaces = element.Spaces;

            foreach (Space space in spaces)
            {
                if (space == null)
                {
                    continue;
                }

                IFCAnyHandle spaceHnd = ExporterCacheManager.SpaceInfoCache.FindSpaceHandle(space.Id);
                if (!IFCAnyHandleUtil.IsNullOrHasNoValue(spaceHnd))
                {
                    spaceHnds.Add(spaceHnd);
                }
            }

            if (spaceHnds.Count == 0)
            {
                return;
            }

            IFCFile file = exporterIFC.GetFile();

            using (IFCTransaction tr = new IFCTransaction(file))
            {
                string       guid         = GUIDUtil.CreateGUID(element);
                IFCAnyHandle ownerHistory = ExporterCacheManager.OwnerHistoryHandle;
                string       name         = NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element));
                string       description  = NamingUtil.GetDescriptionOverride(element, null);
                string       objectType   = NamingUtil.GetObjectTypeOverride(element, NamingUtil.GetFamilyAndTypeName(element));
                string       longName     = NamingUtil.GetLongNameOverride(element, null);

                IFCAnyHandle zoneHnd = IFCInstanceExporter.CreateZone(file, guid, ownerHistory, name, description, objectType, longName);

                productWrapper.AddElement(element, zoneHnd);

                string relAssignsGuid = GUIDUtil.CreateSubElementGUID(element, (int)IFCZoneSubElements.RelAssignsToGroup);
                IFCInstanceExporter.CreateRelAssignsToGroup(file, relAssignsGuid, ownerHistory, null, null, spaceHnds, null, zoneHnd);

                tr.Commit();
                return;
            }
        }
Ejemplo n.º 2
0
        /// <summary>
        /// Exports a Group as an IfcGroup.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="element">The element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        /// <returns>True if exported successfully, false otherwise.</returns>
        public static bool ExportGroupElement(ExporterIFC exporterIFC, Group element,
                                              ProductWrapper productWrapper)
        {
            if (element == null)
            {
                return(false);
            }

            // Check the intended IFC entity or type name is in the exclude list specified in the UI
            Common.Enums.IFCEntityType elementClassTypeEnum = Common.Enums.IFCEntityType.IfcGroup;
            if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum))
            {
                return(false);
            }

            IFCFile file = exporterIFC.GetFile();

            using (IFCTransaction tr = new IFCTransaction(file))
            {
                IFCAnyHandle groupHnd = null;

                string       guid         = GUIDUtil.CreateGUID(element);
                IFCAnyHandle ownerHistory = ExporterCacheManager.OwnerHistoryHandle;
                string       name         = NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element));
                string       description  = NamingUtil.GetDescriptionOverride(element, null);
                string       objectType   = NamingUtil.GetObjectTypeOverride(element, NamingUtil.GetFamilyAndTypeName(element));
                string       longName     = NamingUtil.GetLongNameOverride(element, null);

                string            ifcEnumType;
                IFCExportInfoPair exportAs = ExporterUtil.GetExportType(exporterIFC, element, out ifcEnumType);
                if (exportAs.ExportInstance == IFCEntityType.IfcGroup)
                {
                    groupHnd = IFCInstanceExporter.CreateGroup(file, guid, ownerHistory, name, description, objectType);
                }
                else if (!ExporterCacheManager.ExportOptionsCache.ExportAsOlderThanIFC4 && exportAs.ExportInstance == IFCEntityType.IfcBuildingSystem)
                {
                    groupHnd = IFCInstanceExporter.CreateBuildingSystem(file, exportAs, guid, ownerHistory, name, description, objectType, longName);
                }

                if (groupHnd == null)
                {
                    return(false);
                }

                productWrapper.AddElement(element, groupHnd, exportAs);

                ExporterCacheManager.GroupCache.RegisterGroup(element.Id, groupHnd);

                tr.Commit();
                return(true);
            }
        }
Ejemplo n.º 3
0
        /// <summary>
        /// Exports a Group as an IfcGroup.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="element">The element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        /// <returns>True if exported successfully, false otherwise.</returns>
        public static bool ExportGroupElement(ExporterIFC exporterIFC, Group element,
                                              ProductWrapper productWrapper)
        {
            if (element == null)
            {
                return(false);
            }

            // Check the intended IFC entity or type name is in the exclude list specified in the UI
            Common.Enums.IFCEntityType elementClassTypeEnum = Common.Enums.IFCEntityType.IfcGroup;
            if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum))
            {
                return(false);
            }

            IFCFile file = exporterIFC.GetFile();

            using (IFCTransaction tr = new IFCTransaction(file))
            {
                IFCAnyHandle groupHnd = null;

                string       guid         = GUIDUtil.CreateGUID(element);
                IFCAnyHandle ownerHistory = ExporterCacheManager.OwnerHistoryHandle;
                string       name         = NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element));
                string       description  = NamingUtil.GetDescriptionOverride(element, null);
                string       objectType   = NamingUtil.GetObjectTypeOverride(element, NamingUtil.GetFamilyAndTypeName(element));
                string       longName     = NamingUtil.GetLongNameOverride(element, null);

                string            ifcEnumType;
                IFCExportInfoPair exportAs = ExporterUtil.GetObjectExportType(exporterIFC, element, out ifcEnumType);

                if (exportAs.ExportInstance == IFCEntityType.IfcGroup)
                {
                    groupHnd = IFCInstanceExporter.CreateGroup(file, guid, ownerHistory, name, description, objectType);
                }
                else if (!ExporterCacheManager.ExportOptionsCache.ExportAsOlderThanIFC4)
                {
                    if (exportAs.ExportInstance == IFCEntityType.IfcBuildingSystem)
                    {
                        groupHnd = IFCInstanceExporter.CreateBuildingSystem(file, exportAs, guid, ownerHistory, name, description, objectType, longName);
                    }
                    else if (exportAs.ExportInstance == IFCEntityType.IfcFurniture)
                    {
                        groupHnd = IFCInstanceExporter.CreateGenericIFCEntity(exportAs, exporterIFC, element, guid, ownerHistory, null, null);
                    }
                }

                if (groupHnd == null)
                {
                    return(false);
                }

                GroupInfo groupInfo = ExporterCacheManager.GroupCache.RegisterGroup(element.Id, groupHnd);

                if (IFCAnyHandleUtil.IsSubTypeOf(groupHnd, IFCEntityType.IfcProduct))
                {
                    IFCAnyHandle overrideContainerHnd = null;
                    ElementId    overrideContainerId  = ParameterUtil.OverrideContainmentParameter(exporterIFC, element, out overrideContainerHnd);

                    using (PlacementSetter setter = PlacementSetter.Create(exporterIFC, element, null, null, overrideContainerId, overrideContainerHnd))
                    {
                        IFCAnyHandle localPlacementToUse;
                        ElementId    roomId = setter.UpdateRoomRelativeCoordinates(element, out localPlacementToUse);

                        bool containedInSpace = (roomId != ElementId.InvalidElementId);
                        productWrapper.AddElement(element, groupHnd, setter.LevelInfo, null, !containedInSpace, exportAs);

                        if (containedInSpace)
                        {
                            ExporterCacheManager.SpaceInfoCache.RelateToSpace(roomId, groupHnd);
                        }
                    }
                }
                else
                {
                    productWrapper.AddElement(element, groupHnd, exportAs);
                }

                // Check or set the cached Group's export type
                if (groupInfo.GroupType.ExportInstance == IFCEntityType.UnKnown)
                {
                    ExporterCacheManager.GroupCache.RegisterOrUpdateGroupType(element.Id, exportAs);
                }
                else if (groupInfo.GroupType.ExportInstance != exportAs.ExportInstance)
                {
                    throw new InvalidOperationException("Inconsistent Group export entity type");
                }

                tr.Commit();
                return(true);
            }
        }
Ejemplo n.º 4
0
        /// <summary>
        /// Base implementation to export IFC site object.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="document">The Revit document.  It may be null if element isn't.</param>
        /// <param name="element">The element.  It may be null if document isn't.</param>
        /// <param name="geometryElement">The geometry element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        private static void ExportSiteBase(ExporterIFC exporterIFC, Document document, Element element, GeometryElement geometryElement, ProductWrapper productWrapper)
        {
            IFCAnyHandle siteHandle = ExporterCacheManager.SiteHandle;

            // Nothing to do if we've already created an IfcSite, and have no site element to try to
            // export or append to the existing site.
            if (element == null && !IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle))
            {
                return;
            }

            Document doc = document;

            if (doc == null)
            {
                if (element != null)
                {
                    doc = element.Document;
                }
                else
                {
                    throw new ArgumentException("Both document and element are null.");
                }
            }

            // Check the intended IFC entity or type name is in the exclude list specified in the UI
            Common.Enums.IFCEntityType elementClassTypeEnum = Common.Enums.IFCEntityType.IfcSite;
            if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum))
            {
                return;
            }

            IFCFile file = exporterIFC.GetFile();

            using (IFCTransaction tr = new IFCTransaction(file))
            {
                IFCAnyHandle siteRepresentation = null;
                if (element != null)
                {
                    // It would be possible that they actually represent several different sites with different buildings,
                    // but until we have a concept of a building in Revit, we have to assume 0-1 sites, 1 building.
                    bool appendedToSite     = false;
                    bool exportAsFacetation = !ExporterCacheManager.ExportOptionsCache.ExportAsCoordinationView2;
                    if (!IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle))
                    {
                        IList <IFCAnyHandle> representations = IFCAnyHandleUtil.GetProductRepresentations(siteHandle);
                        if (representations.Count > 0)
                        {
                            IFCAnyHandle bodyRep     = representations[0];
                            IFCAnyHandle boundaryRep = null;
                            if (representations.Count > 1)
                            {
                                boundaryRep = representations[1];
                            }

                            siteRepresentation = RepresentationUtil.CreateSurfaceProductDefinitionShape(exporterIFC, element, geometryElement, true, exportAsFacetation, ref bodyRep, ref boundaryRep);
                            if (representations.Count == 1 && !IFCAnyHandleUtil.IsNullOrHasNoValue(boundaryRep))
                            {
                                // If the first site has no boundaryRep,
                                // we will add the boundaryRep from second site to it.
                                representations.Clear();
                                representations.Add(boundaryRep);
                                IFCAnyHandleUtil.AddProductRepresentations(siteHandle, representations);
                            }
                            appendedToSite = true;
                        }
                    }

                    if (!appendedToSite)
                    {
                        siteRepresentation = RepresentationUtil.CreateSurfaceProductDefinitionShape(exporterIFC, element, geometryElement, true, exportAsFacetation);
                    }
                }

                List <int>      latitude     = new List <int>();
                List <int>      longitude    = new List <int>();
                ProjectLocation projLocation = doc.ActiveProjectLocation;

                IFCAnyHandle relativePlacement = null;
                double       unscaledElevation = 0.0;
                if (projLocation != null)
                {
                    const double scaleToDegrees = 180 / Math.PI;
                    double       latitudeInDeg  = projLocation.GetSiteLocation().Latitude *scaleToDegrees;
                    double       longitudeInDeg = projLocation.GetSiteLocation().Longitude *scaleToDegrees;

                    ExporterUtil.GetSafeProjectPositionElevation(doc, out unscaledElevation);

                    int latDeg     = ((int)latitudeInDeg); latitudeInDeg -= latDeg; latitudeInDeg *= 60;
                    int latMin     = ((int)latitudeInDeg); latitudeInDeg -= latMin; latitudeInDeg *= 60;
                    int latSec     = ((int)latitudeInDeg); latitudeInDeg -= latSec; latitudeInDeg *= 1000000;
                    int latFracSec = ((int)latitudeInDeg);
                    latitude.Add(latDeg);
                    latitude.Add(latMin);
                    latitude.Add(latSec);
                    if (!ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
                    {
                        latitude.Add(latFracSec);
                    }

                    int longDeg     = ((int)longitudeInDeg); longitudeInDeg -= longDeg; longitudeInDeg *= 60;
                    int longMin     = ((int)longitudeInDeg); longitudeInDeg -= longMin; longitudeInDeg *= 60;
                    int longSec     = ((int)longitudeInDeg); longitudeInDeg -= longSec; longitudeInDeg *= 1000000;
                    int longFracSec = ((int)longitudeInDeg);
                    longitude.Add(longDeg);
                    longitude.Add(longMin);
                    longitude.Add(longSec);
                    if (!ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
                    {
                        longitude.Add(longFracSec);
                    }

                    ExportOptionsCache.SiteTransformBasis transformBasis = ExporterCacheManager.ExportOptionsCache.SiteTransformation;

                    Transform siteSharedCoordinatesTrf = Transform.Identity;

                    if (transformBasis != ExportOptionsCache.SiteTransformBasis.Internal)
                    {
                        BasePoint basePoint = null;
                        if (transformBasis == ExportOptionsCache.SiteTransformBasis.Project)
                        {
                            basePoint = new FilteredElementCollector(doc).WherePasses(new ElementCategoryFilter(BuiltInCategory.OST_ProjectBasePoint)).First() as BasePoint;
                        }
                        else if (transformBasis == ExportOptionsCache.SiteTransformBasis.Site)
                        {
                            basePoint = new FilteredElementCollector(doc).WherePasses(new ElementCategoryFilter(BuiltInCategory.OST_SharedBasePoint)).First() as BasePoint;
                        }

                        if (basePoint != null)
                        {
                            BoundingBoxXYZ bbox = basePoint.get_BoundingBox(null);
                            XYZ            xyz  = bbox.Min;
                            siteSharedCoordinatesTrf = Transform.CreateTranslation(new XYZ(-xyz.X, -xyz.Y, unscaledElevation - xyz.Z));
                        }
                        else
                        {
                            siteSharedCoordinatesTrf = projLocation.GetTransform().Inverse;
                        }
                    }

                    if (!siteSharedCoordinatesTrf.IsIdentity)
                    {
                        double unscaledSiteElevation = ExporterCacheManager.ExportOptionsCache.IncludeSiteElevation ? 0.0 : unscaledElevation;
                        XYZ    orig = UnitUtil.ScaleLength(siteSharedCoordinatesTrf.Origin - new XYZ(0, 0, unscaledSiteElevation));
                        relativePlacement = ExporterUtil.CreateAxis2Placement3D(file, orig, siteSharedCoordinatesTrf.BasisZ, siteSharedCoordinatesTrf.BasisX);
                    }
                }

                // Get elevation for site.
                double elevation = UnitUtil.ScaleLength(unscaledElevation);

                if (IFCAnyHandleUtil.IsNullOrHasNoValue(relativePlacement))
                {
                    relativePlacement = ExporterUtil.CreateAxis2Placement3D(file);
                }

                IFCAnyHandle localPlacement = IFCInstanceExporter.CreateLocalPlacement(file, null, relativePlacement);
                IFCAnyHandle ownerHistory   = ExporterCacheManager.OwnerHistoryHandle;
                string       siteObjectType = null;

                ProjectInfo projectInfo     = doc.ProjectInformation;
                Element     mainSiteElement = (element != null) ? element : projectInfo;

                bool   exportSite          = false;
                string siteGUID            = null;
                string siteName            = null;
                string siteLongName        = null;
                string siteLandTitleNumber = null;
                string siteDescription     = null;

                if (element != null)
                {
                    if (IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle))
                    {
                        exportSite = true;

                        // We will use the Project Information site name as the primary name, if it exists.
                        siteGUID = GUIDUtil.CreateSiteGUID(doc, element);

                        siteName        = NamingUtil.GetOverrideStringValue(projectInfo, "SiteName", NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element)));
                        siteDescription = NamingUtil.GetDescriptionOverride(element, null);

                        // Look in site element for "IfcLongName" or project information for either "IfcLongName" or "SiteLongName".
                        siteLongName = NamingUtil.GetLongNameOverride(projectInfo, NamingUtil.GetLongNameOverride(element, null));
                        if (string.IsNullOrWhiteSpace(siteLongName))
                        {
                            siteLongName = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLongName", null);
                        }

                        siteDescription = NamingUtil.GetOverrideStringValue(projectInfo, "SiteDescription", null);
                        siteObjectType  = NamingUtil.GetOverrideStringValue(projectInfo, "SiteObjectType", null);

                        // Look in site element for "IfcLandTitleNumber" or project information for "SiteLandTitleNumber".
                        siteLandTitleNumber = NamingUtil.GetOverrideStringValue(element, "IfcLandTitleNumber", null);
                        if (string.IsNullOrWhiteSpace(siteLandTitleNumber))
                        {
                            siteLandTitleNumber = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLandTitleNumber", null);
                        }
                    }
                }
                else
                {
                    exportSite = true;

                    siteGUID            = GUIDUtil.CreateProjectLevelGUID(doc, IFCProjectLevelGUIDType.Site);
                    siteName            = NamingUtil.GetOverrideStringValue(projectInfo, "SiteName", "Default");
                    siteLongName        = NamingUtil.GetLongNameOverride(projectInfo, NamingUtil.GetOverrideStringValue(projectInfo, "SiteLongName", null));
                    siteDescription     = NamingUtil.GetOverrideStringValue(projectInfo, "SiteDescription", null);
                    siteObjectType      = NamingUtil.GetOverrideStringValue(projectInfo, "SiteObjectType", null);
                    siteLandTitleNumber = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLandTitleNumber", null);

                    // don't bother if we have nothing in the site whatsoever.
                    if ((latitude.Count == 0 || longitude.Count == 0) && IFCAnyHandleUtil.IsNullOrHasNoValue(relativePlacement) &&
                        string.IsNullOrWhiteSpace(siteLongName) && string.IsNullOrWhiteSpace(siteLandTitleNumber))
                    {
                        return;
                    }
                }

                COBieProjectInfo cobieProjectInfo = ExporterCacheManager.ExportOptionsCache.COBieProjectInfo;
                // Override Site information when it is a special COBie export
                if (ExporterCacheManager.ExportOptionsCache.ExportAs2x3COBIE24DesignDeliverable && cobieProjectInfo != null)
                {
                    siteName        = cobieProjectInfo.SiteLocation;
                    siteDescription = cobieProjectInfo.SiteDescription;
                }

                if (exportSite)
                {
                    IFCAnyHandle address = null;
                    if (Exporter.NeedToCreateAddressForSite(doc))
                    {
                        address = Exporter.CreateIFCAddress(file, doc, projectInfo);
                    }

                    siteHandle = IFCInstanceExporter.CreateSite(exporterIFC, element, siteGUID, ownerHistory, siteName, siteDescription, siteObjectType, localPlacement,
                                                                siteRepresentation, siteLongName, IFCElementComposition.Element, latitude, longitude, elevation, siteLandTitleNumber, address);
                    productWrapper.AddSite(mainSiteElement, siteHandle);
                    ExporterCacheManager.SiteHandle = siteHandle;


                    // Getting Pset_SiteCommon data from parameters
                    // IFC2x3: BuildableArea, TotalArea, BuildingHeightLimit
                    HashSet <IFCAnyHandle> properties = new HashSet <IFCAnyHandle>();
                    IFCAnyHandle           propSingleValue;
                    propSingleValue = PropertyUtil.CreateAreaMeasurePropertyFromElement(file, exporterIFC, projectInfo,
                                                                                        "Pset_SiteCommon.BuildableArea", "BuildableArea", PropertyValueType.SingleValue);
                    if (!IFCAnyHandleUtil.IsNullOrHasNoValue(propSingleValue))
                    {
                        properties.Add(propSingleValue);
                    }

                    propSingleValue = PropertyUtil.CreateAreaMeasurePropertyFromElement(file, exporterIFC, projectInfo,
                                                                                        "Pset_SiteCommon.TotalArea", "TotalArea", PropertyValueType.SingleValue);
                    if (!IFCAnyHandleUtil.IsNullOrHasNoValue(propSingleValue))
                    {
                        properties.Add(propSingleValue);
                    }

                    propSingleValue = PropertyUtil.CreatePositiveLengthMeasurePropertyFromElement(file, exporterIFC, projectInfo,
                                                                                                  "Pset_SiteCommon.BuildingHeightLimit", null, "BuildingHeightLimit", PropertyValueType.SingleValue);
                    if (!IFCAnyHandleUtil.IsNullOrHasNoValue(propSingleValue))
                    {
                        properties.Add(propSingleValue);
                    }

                    if (!ExporterCacheManager.ExportOptionsCache.ExportAsOlderThanIFC4)
                    {
                        propSingleValue = PropertyUtil.CreateIdentifierPropertyFromElement(file, projectInfo,
                                                                                           "Pset_SiteCommon.Reference", "Reference", PropertyValueType.SingleValue);
                        if (!IFCAnyHandleUtil.IsNullOrHasNoValue(propSingleValue))
                        {
                            properties.Add(propSingleValue);
                        }

                        propSingleValue = PropertyUtil.CreatePositiveRatioPropertyFromElement(file, exporterIFC, projectInfo,
                                                                                              "Pset_SiteCommon.SiteCoverageRatio", "SiteCoverageRatio", PropertyValueType.SingleValue);
                        if (!IFCAnyHandleUtil.IsNullOrHasNoValue(propSingleValue))
                        {
                            properties.Add(propSingleValue);
                        }

                        propSingleValue = PropertyUtil.CreatePositiveRatioPropertyFromElement(file, exporterIFC, projectInfo,
                                                                                              "Pset_SiteCommon.FloorAreaRatio", "FloorAreaRatio", PropertyValueType.SingleValue);
                        if (!IFCAnyHandleUtil.IsNullOrHasNoValue(propSingleValue))
                        {
                            properties.Add(propSingleValue);
                        }
                    }

                    if (properties.Count > 0)
                    {
                        IFCInstanceExporter.CreatePropertySet(file,
                                                              GUIDUtil.CreateGUID(), ExporterCacheManager.OwnerHistoryHandle, "Pset_SiteCommon",
                                                              null, properties);
                    }
                }


                tr.Commit();
            }
        }
Ejemplo n.º 5
0
        /// <summary>
        /// Base implementation to export IFC site object.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="document">The Revit document.  It may be null if element isn't.</param>
        /// <param name="element">The element.  It may be null if document isn't.</param>
        /// <param name="geometryElement">The geometry element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        private static void ExportSiteBase(ExporterIFC exporterIFC, Document document, Element element, GeometryElement geometryElement, ProductWrapper productWrapper)
        {
            IFCAnyHandle siteHandle = ExporterCacheManager.SiteHandle;

            int numSiteElements = (!IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle) ? 1 : 0);

            if (element == null && (numSiteElements != 0))
            {
                return;
            }

            Document doc = document;

            if (doc == null)
            {
                if (element != null)
                {
                    doc = element.Document;
                }
                else
                {
                    throw new ArgumentException("Both document and element are null.");
                }
            }

            IFCFile file = exporterIFC.GetFile();

            using (IFCTransaction tr = new IFCTransaction(file))
            {
                IFCAnyHandle siteRepresentation = null;
                if (element != null)
                {
                    // It would be possible that they actually represent several different sites with different buildings,
                    // but until we have a concept of a building in Revit, we have to assume 0-1 sites, 1 building.
                    bool appendedToSite     = false;
                    bool exportAsFacetation = !ExporterCacheManager.ExportOptionsCache.ExportAsCoordinationView2;
                    if (!IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle))
                    {
                        IList <IFCAnyHandle> representations = IFCAnyHandleUtil.GetProductRepresentations(siteHandle);
                        if (representations.Count > 0)
                        {
                            IFCAnyHandle bodyRep     = representations[0];
                            IFCAnyHandle boundaryRep = null;
                            if (representations.Count > 1)
                            {
                                boundaryRep = representations[1];
                            }

                            siteRepresentation = RepresentationUtil.CreateSurfaceProductDefinitionShape(exporterIFC, element, geometryElement, true, exportAsFacetation, ref bodyRep, ref boundaryRep);
                            if (representations.Count == 1 && !IFCAnyHandleUtil.IsNullOrHasNoValue(boundaryRep))
                            {
                                // If the first site has no boundaryRep,
                                // we will add the boundaryRep from second site to it.
                                representations.Clear();
                                representations.Add(boundaryRep);
                                IFCAnyHandleUtil.AddProductRepresentations(siteHandle, representations);
                            }
                            appendedToSite = true;
                        }
                    }

                    if (!appendedToSite)
                    {
                        siteRepresentation = RepresentationUtil.CreateSurfaceProductDefinitionShape(exporterIFC, element, geometryElement, true, exportAsFacetation);
                    }
                }

                List <int>      latitude     = new List <int>();
                List <int>      longitude    = new List <int>();
                ProjectLocation projLocation = doc.ActiveProjectLocation;

                IFCAnyHandle relativePlacement = null;
                double       unscaledElevation = 0.0;
                if (projLocation != null)
                {
                    const double scaleToDegrees = 180 / Math.PI;
                    double       latitudeInDeg  = projLocation.SiteLocation.Latitude * scaleToDegrees;
                    double       longitudeInDeg = projLocation.SiteLocation.Longitude * scaleToDegrees;

                    ExporterUtil.GetSafeProjectPositionElevation(doc, out unscaledElevation);

                    int latDeg     = ((int)latitudeInDeg); latitudeInDeg -= latDeg; latitudeInDeg *= 60;
                    int latMin     = ((int)latitudeInDeg); latitudeInDeg -= latMin; latitudeInDeg *= 60;
                    int latSec     = ((int)latitudeInDeg); latitudeInDeg -= latSec; latitudeInDeg *= 1000000;
                    int latFracSec = ((int)latitudeInDeg);
                    latitude.Add(latDeg);
                    latitude.Add(latMin);
                    latitude.Add(latSec);
                    if (!ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
                    {
                        latitude.Add(latFracSec);
                    }

                    int longDeg     = ((int)longitudeInDeg); longitudeInDeg -= longDeg; longitudeInDeg *= 60;
                    int longMin     = ((int)longitudeInDeg); longitudeInDeg -= longMin; longitudeInDeg *= 60;
                    int longSec     = ((int)longitudeInDeg); longitudeInDeg -= longSec; longitudeInDeg *= 1000000;
                    int longFracSec = ((int)longitudeInDeg);
                    longitude.Add(longDeg);
                    longitude.Add(longMin);
                    longitude.Add(longSec);
                    if (!ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
                    {
                        longitude.Add(longFracSec);
                    }

                    Transform siteSharedCoordinatesTrf = projLocation.GetTransform().Inverse;
                    if (!siteSharedCoordinatesTrf.IsIdentity)
                    {
                        double unscaledSiteElevation = ExporterCacheManager.ExportOptionsCache.IncludeSiteElevation ? 0.0 : unscaledElevation;
                        XYZ    orig = UnitUtil.ScaleLength(siteSharedCoordinatesTrf.Origin - new XYZ(0, 0, unscaledSiteElevation));
                        relativePlacement = ExporterUtil.CreateAxis2Placement3D(file, orig, siteSharedCoordinatesTrf.BasisZ, siteSharedCoordinatesTrf.BasisX);
                    }
                }

                // Get elevation for site.
                double elevation = UnitUtil.ScaleLength(unscaledElevation);

                if (IFCAnyHandleUtil.IsNullOrHasNoValue(relativePlacement))
                {
                    relativePlacement = ExporterUtil.CreateAxis2Placement3D(file);
                }

                IFCAnyHandle localPlacement = IFCInstanceExporter.CreateLocalPlacement(file, null, relativePlacement);
                IFCAnyHandle ownerHistory   = exporterIFC.GetOwnerHistoryHandle();
                string       siteObjectType = NamingUtil.CreateIFCObjectName(exporterIFC, element);

                ProjectInfo projectInfo     = doc.ProjectInformation;
                Element     mainSiteElement = (element != null) ? element : projectInfo;

                bool   exportSite          = false;
                string siteGUID            = null;
                string siteName            = null;
                string siteLongName        = null;
                string siteLandTitleNumber = null;
                string siteDescription     = null;

                if (element != null)
                {
                    if (IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle))
                    {
                        exportSite = true;

                        // We will use the Project Information site name as the primary name, if it exists.
                        siteGUID = GUIDUtil.CreateSiteGUID(doc, element);

                        siteName        = NamingUtil.GetOverrideStringValue(projectInfo, "SiteName", NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element)));
                        siteDescription = NamingUtil.GetDescriptionOverride(element, null);
                        siteObjectType  = NamingUtil.GetObjectTypeOverride(element, siteObjectType);

                        // Look in site element for "IfcLongName" or project information for either "IfcLongName" or "SiteLongName".
                        siteLongName = NamingUtil.GetLongNameOverride(projectInfo, NamingUtil.GetLongNameOverride(element, null));
                        if (string.IsNullOrWhiteSpace(siteLongName))
                        {
                            siteLongName = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLongName", null);
                        }

                        // Look in site element for "IfcLandTitleNumber" or project information for "SiteLandTitleNumber".
                        siteLandTitleNumber = NamingUtil.GetOverrideStringValue(element, "IfcLandTitleNumber", null);
                        if (string.IsNullOrWhiteSpace(siteLandTitleNumber))
                        {
                            siteLandTitleNumber = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLandTitleNumber", null);
                        }
                    }
                }
                else
                {
                    exportSite = true;

                    siteGUID            = GUIDUtil.CreateProjectLevelGUID(doc, IFCProjectLevelGUIDType.Site);
                    siteName            = NamingUtil.GetOverrideStringValue(projectInfo, "SiteName", "Default");
                    siteLongName        = NamingUtil.GetLongNameOverride(projectInfo, NamingUtil.GetOverrideStringValue(projectInfo, "SiteLongName", null));
                    siteLandTitleNumber = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLandTitleNumber", null);

                    // don't bother if we have nothing in the site whatsoever.
                    if ((latitude.Count == 0 || longitude.Count == 0) && IFCAnyHandleUtil.IsNullOrHasNoValue(relativePlacement) &&
                        string.IsNullOrWhiteSpace(siteLongName) && string.IsNullOrWhiteSpace(siteLandTitleNumber))
                    {
                        return;
                    }
                }

                if (exportSite)
                {
                    siteHandle = IFCInstanceExporter.CreateSite(file, siteGUID, ownerHistory, siteName, siteDescription, siteObjectType, localPlacement,
                                                                siteRepresentation, siteLongName, Toolkit.IFCElementComposition.Element, latitude, longitude, elevation, siteLandTitleNumber, null);
                    productWrapper.AddSite(mainSiteElement, siteHandle);
                    ExporterCacheManager.SiteHandle = siteHandle;
                }


                tr.Commit();
            }
        }
Ejemplo n.º 6
0
        /// <summary>
        /// Exports a generic family instance as IFC instance.
        /// </summary>
        /// <param name="type">The export type.</param>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="familyInstance">The element.</param>
        /// <param name="wrapper">The ProductWrapper.</param>
        /// <param name="setter">The PlacementSetter.</param>
        /// <param name="extraParams">The extrusion creation data.</param>
        /// <param name="instanceGUID">The guid.</param>
        /// <param name="ownerHistory">The owner history handle.</param>
        /// <param name="instanceName">The name.</param>
        /// <param name="instanceDescription">The description.</param>
        /// <param name="instanceObjectType">The object type.</param>
        /// <param name="productRepresentation">The representation handle.</param>
        /// <param name="instanceTag">The tag for the entity, usually based on the element id.</param>
        /// <param name="ifcEnumType">The predefined type/shape type, if any, for the object.</param>
        /// <param name="overrideLocalPlacement">The local placement to use instead of the one in the placement setter, if appropriate.</param>
        /// <returns>The handle.</returns>
        public static IFCAnyHandle ExportGenericInstance(IFCExportType type,
                                                         ExporterIFC exporterIFC, Element familyInstance,
                                                         ProductWrapper wrapper, PlacementSetter setter, IFCExtrusionCreationData extraParams,
                                                         string instanceGUID, IFCAnyHandle ownerHistory,
                                                         string instanceName, string instanceDescription, string instanceObjectType,
                                                         IFCAnyHandle productRepresentation,
                                                         string instanceTag, string ifcEnumType, IFCAnyHandle overrideLocalPlacement)
        {
            IFCFile  file = exporterIFC.GetFile();
            Document doc  = familyInstance.Document;

            bool isRoomRelated      = IsRoomRelated(type);
            bool isChildInContainer = familyInstance.AssemblyInstanceId != ElementId.InvalidElementId;

            IFCAnyHandle localPlacementToUse = setter.LocalPlacement;
            ElementId    roomId = ElementId.InvalidElementId;

            if (isRoomRelated)
            {
                roomId = setter.UpdateRoomRelativeCoordinates(familyInstance, out localPlacementToUse);
            }

            //should remove the create method where there is no use of this handle for API methods
            //some places uses the return value of ExportGenericInstance as input parameter for API methods
            IFCAnyHandle instanceHandle = null;

            switch (type)
            {
            case IFCExportType.IfcBeam:
            case IFCExportType.IfcBeamType:
            {
                string preDefinedType = string.IsNullOrWhiteSpace(ifcEnumType) ? "BEAM" : ifcEnumType;
                instanceHandle = IFCInstanceExporter.CreateBeam(file, instanceGUID, ownerHistory,
                                                                instanceName, instanceDescription, instanceObjectType, localPlacementToUse,
                                                                productRepresentation, instanceTag, preDefinedType);
                break;
            }

            case IFCExportType.IfcColumn:
            case IFCExportType.IfcColumnType:
            {
                string preDefinedType = string.IsNullOrWhiteSpace(ifcEnumType) ? "COLUMN" : ifcEnumType;
                instanceHandle = IFCInstanceExporter.CreateColumn(file, instanceGUID, ownerHistory,
                                                                  instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag, preDefinedType);
                break;
            }

            case IFCExportType.IfcCurtainWall:
            case IFCExportType.IfcCurtainWallType:
            {
                instanceHandle = IFCInstanceExporter.CreateCurtainWall(file, instanceGUID, ownerHistory,
                                                                       instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag);
                break;
            }

            case IFCExportType.IfcMember:
            case IFCExportType.IfcMemberType:
            {
                string preDefinedType = string.IsNullOrWhiteSpace(ifcEnumType) ? "BRACE" : ifcEnumType;
                instanceHandle = IFCInstanceExporter.CreateMember(file, instanceGUID, ownerHistory,
                                                                  instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag, preDefinedType);

                // Register the members's IFC handle for later use by truss export.
                ExporterCacheManager.ElementToHandleCache.Register(familyInstance.Id, instanceHandle);
                break;
            }

            case IFCExportType.IfcPlate:
            case IFCExportType.IfcPlateType:
            {
                IFCAnyHandle localPlacement = localPlacementToUse;
                if (overrideLocalPlacement != null)
                {
                    isChildInContainer = true;
                    localPlacement     = overrideLocalPlacement;
                }

                string preDefinedType = string.IsNullOrWhiteSpace(ifcEnumType) ? "NOTDEFINED" : ifcEnumType;
                instanceHandle = IFCInstanceExporter.CreatePlate(file, instanceGUID, ownerHistory,
                                                                 instanceName, instanceDescription, instanceObjectType, localPlacement, productRepresentation, instanceTag, preDefinedType);
                break;
            }

            case IFCExportType.IfcDiscreteAccessoryType:
            {
                instanceHandle = IFCInstanceExporter.CreateDiscreteAccessory(file, instanceGUID, ownerHistory,
                                                                             instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag);
                break;
            }

            case IFCExportType.IfcDistributionControlElement:
            {
                instanceHandle = IFCInstanceExporter.CreateDistributionControlElement(file, instanceGUID, ownerHistory,
                                                                                      instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag,
                                                                                      null);
                break;
            }

            case IFCExportType.IfcDistributionFlowElement:
            {
                instanceHandle = IFCInstanceExporter.CreateDistributionFlowElement(file, instanceGUID, ownerHistory,
                                                                                   instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag);
                break;
            }

            case IFCExportType.IfcDistributionChamberElement:
            case IFCExportType.IfcDistributionChamberElementType:
            {
                instanceHandle = IFCInstanceExporter.CreateGenericIFCEntity(Common.Enums.IFCEntityType.IfcDistributionChamberElement, file, instanceGUID, ownerHistory,
                                                                            instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag);
                break;
            }

            case IFCExportType.IfcFastenerType:
            {
                instanceHandle = IFCInstanceExporter.CreateFastener(file, instanceGUID, ownerHistory,
                                                                    instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag);
                break;
            }

            case IFCExportType.IfcMechanicalFastenerType:
            {
                double?nominalDiameter = null;
                double?nominalLength   = null;

                double nominalDiameterVal, nominalLengthVal;
                if (ParameterUtil.GetDoubleValueFromElementOrSymbol(familyInstance, "NominalDiameter", out nominalDiameterVal) != null)
                {
                    nominalDiameter = UnitUtil.ScaleLength(nominalDiameterVal);
                }
                if (ParameterUtil.GetDoubleValueFromElementOrSymbol(familyInstance, "NominalLength", out nominalLengthVal) != null)
                {
                    nominalLength = UnitUtil.ScaleLength(nominalLengthVal);
                }

                string preDefinedType = string.IsNullOrWhiteSpace(ifcEnumType) ? "NOTDEFINED" : ifcEnumType;

                instanceHandle = IFCInstanceExporter.CreateMechanicalFastener(file, instanceGUID, ownerHistory,
                                                                              instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag,
                                                                              nominalDiameter, nominalLength, preDefinedType);
                break;
            }

            case IFCExportType.IfcRailingType:
            {
                string        strEnumType;
                IFCExportType exportAs = ExporterUtil.GetExportType(exporterIFC, familyInstance, out strEnumType);
                if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
                {
                    instanceHandle = IFCInstanceExporter.CreateRailing(file, instanceGUID, ownerHistory, instanceName, instanceDescription,
                                                                       instanceObjectType, localPlacementToUse, productRepresentation, instanceTag,
                                                                       GetPreDefinedType <Toolkit.IFC4.IFCRailingType>(familyInstance, strEnumType).ToString());
                }
                else
                {
                    instanceHandle = IFCInstanceExporter.CreateRailing(file, instanceGUID, ownerHistory, instanceName, instanceDescription,
                                                                       instanceObjectType, localPlacementToUse, productRepresentation, instanceTag,
                                                                       GetPreDefinedType <Toolkit.IFCRailingType>(familyInstance, strEnumType).ToString());
                }
                break;
            }

            case IFCExportType.IfcSpace:
            {
                string instanceLongName = NamingUtil.GetLongNameOverride(familyInstance, NamingUtil.GetLongNameOverride(familyInstance, instanceName));
                IFCInternalOrExternal internalOrExternal = CategoryUtil.IsElementExternal(familyInstance) ? IFCInternalOrExternal.External : IFCInternalOrExternal.Internal;

                instanceHandle = IFCInstanceExporter.CreateSpace(file, instanceGUID, ownerHistory, instanceName, instanceDescription,
                                                                 instanceObjectType, localPlacementToUse, productRepresentation, instanceLongName, IFCElementComposition.Element,
                                                                 internalOrExternal, null);
                break;
            }

            default:
            {
                if (ExporterCacheManager.ExportOptionsCache.ExportAs4 &&
                    (type == IFCExportType.IfcDistributionElement ||
                     type == IFCExportType.IfcEnergyConversionDevice ||
                     type == IFCExportType.IfcFlowController ||
                     type == IFCExportType.IfcFlowFitting ||
                     type == IFCExportType.IfcFlowMovingDevice ||
                     type == IFCExportType.IfcFlowSegment ||
                     type == IFCExportType.IfcFlowStorageDevice ||
                     type == IFCExportType.IfcFlowTerminal ||
                     type == IFCExportType.IfcFlowTreatmentDevice))
                {
                    // for IFC4, there are several entities that are valid in IFC2x3 but now have been made abstract or deprecated, so cannot be created. Create proxy instead.
                    //instanceHandle = IFCInstanceExporter.CreateBuildingElementProxy(file, instanceGUID, ownerHistory,
                    //    instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag,
                    //    Toolkit.IFC4.IFCBuildingElementProxyType.USERDEFINED.ToString());
                    Common.Enums.IFCEntityType exportEntity = Common.Enums.IFCEntityType.UnKnown;
                    if (Enum.TryParse(type.ToString(), out exportEntity))
                    {
                        instanceHandle = IFCInstanceExporter.CreateGenericIFCEntity(exportEntity, file, instanceGUID, ownerHistory,
                                                                                    instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag);
                    }
                }
                else if ((type == IFCExportType.IfcPile) ||
                         (type == IFCExportType.IfcFurnishingElement) || IsFurnishingElementSubType(type) ||
                         (type == IFCExportType.IfcEnergyConversionDevice) || IsEnergyConversionDeviceSubType(type) ||
                         (type == IFCExportType.IfcFlowFitting) || IsFlowFittingSubType(type) ||
                         (type == IFCExportType.IfcFlowMovingDevice) || IsFlowMovingDeviceSubType(type) ||
                         (type == IFCExportType.IfcFlowSegment) || IsFlowSegmentSubType(type) ||
                         (type == IFCExportType.IfcFlowStorageDevice) || IsFlowStorageDeviceSubType(type) ||
                         (type == IFCExportType.IfcFlowTerminal) || IsFlowTerminalSubType(type) ||
                         (type == IFCExportType.IfcFlowTreatmentDevice) || IsFlowTreatmentDeviceSubType(type) ||
                         (type == IFCExportType.IfcFlowController) || IsFlowControllerSubType(type) ||
                         (type == IFCExportType.IfcDistributionFlowElement) || IsDistributionFlowElementSubType(type) ||
                         (type == IFCExportType.IfcDistributionControlElement) || IsDistributionControlElementSubType(type) ||
                         (type == IFCExportType.IfcBuildingElementProxy) || (type == IFCExportType.IfcBuildingElementProxyType))
                {
                    string exportEntityStr = type.ToString();
                    Common.Enums.IFCEntityType exportEntity = Common.Enums.IFCEntityType.UnKnown;

                    if (String.Compare(exportEntityStr.Substring(exportEntityStr.Length - 4), "Type", true) == 0)
                    {
                        exportEntityStr = exportEntityStr.Substring(0, (exportEntityStr.Length - 4));
                    }
                    if (!Enum.TryParse(exportEntityStr, out exportEntity))
                    {
                        // This is a special case.   IFC2x3 has IfcFlowElement for the instance, and both IfcElectricHeaterType and IfcSpaceHeaterType.
                        // IFC4 has IfcSpaceHeater and IfcSpaceHeaterType.
                        // Since IfcElectricHeater doesn't exist in IFC4, TryParse will fail.  For the instance only, we will map it to IfcSpaceHeater,
                        // which will in turn be redirected to IfcFlowElement for IFC2x3, if necessary.
                        if (type == IFCExportType.IfcElectricHeaterType)
                        {
                            exportEntity = Common.Enums.IFCEntityType.IfcSpaceHeater;
                        }
                        else
                        {
                            exportEntity = Common.Enums.IFCEntityType.UnKnown;
                        }
                    }

                    if (exportEntity != Common.Enums.IFCEntityType.UnKnown)
                    {
                        instanceHandle = IFCInstanceExporter.CreateGenericIFCEntity(exportEntity, file, instanceGUID, ownerHistory,
                                                                                    instanceName, instanceDescription, instanceObjectType, localPlacementToUse, productRepresentation, instanceTag);
                    }
                }
                break;
            }
            }

            if (!IFCAnyHandleUtil.IsNullOrHasNoValue(instanceHandle))
            {
                bool containedInSpace = (roomId != ElementId.InvalidElementId);
                bool associateToLevel = containedInSpace ? false : !isChildInContainer;
                wrapper.AddElement(familyInstance, instanceHandle, setter, extraParams, associateToLevel);
                if (containedInSpace)
                {
                    ExporterCacheManager.SpaceInfoCache.RelateToSpace(roomId, instanceHandle);
                }
            }
            return(instanceHandle);
        }
Ejemplo n.º 7
0
        /// <summary>
        /// Base implementation to export IFC site object.
        /// </summary>
        /// <param name="exporterIFC">The ExporterIFC object.</param>
        /// <param name="document">The Revit document.  It may be null if element isn't.</param>
        /// <param name="element">The element.  It may be null if document isn't.</param>
        /// <param name="geometryElement">The geometry element.</param>
        /// <param name="productWrapper">The ProductWrapper.</param>
        private static void ExportSiteBase(ExporterIFC exporterIFC, Document document, Element element, GeometryElement geometryElement, ProductWrapper productWrapper)
        {
            IFCAnyHandle siteHandle = ExporterCacheManager.SiteHandle;

            // Nothing to do if we've already created an IfcSite, and have no site element to try to
            // export or append to the existing site.
            if (element == null && !IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle))
            {
                return;
            }

            Document doc = document;

            if (doc == null)
            {
                if (element != null)
                {
                    doc = element.Document;
                }
                else
                {
                    throw new ArgumentException("Both document and element are null.");
                }
            }

            // Check the intended IFC entity or type name is in the exclude list specified in the UI
            Common.Enums.IFCEntityType elementClassTypeEnum = Common.Enums.IFCEntityType.IfcSite;
            if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum))
            {
                return;
            }

            IFCFile file = exporterIFC.GetFile();

            using (IFCTransaction tr = new IFCTransaction(file))
            {
                IFCAnyHandle siteRepresentation = null;
                if (element != null)
                {
                    // It would be possible that they actually represent several different sites with different buildings,
                    // but until we have a concept of a building in Revit, we have to assume 0-1 sites, 1 building.
                    bool appendedToSite     = false;
                    bool exportAsFacetation = !ExporterCacheManager.ExportOptionsCache.ExportAsCoordinationView2;
                    if (!IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle))
                    {
                        IList <IFCAnyHandle> representations = IFCAnyHandleUtil.GetProductRepresentations(siteHandle);
                        if (representations.Count > 0)
                        {
                            IFCAnyHandle bodyRep     = representations[0];
                            IFCAnyHandle boundaryRep = null;
                            if (representations.Count > 1)
                            {
                                boundaryRep = representations[1];
                            }

                            siteRepresentation = RepresentationUtil.CreateSurfaceProductDefinitionShape(exporterIFC, element, geometryElement, true, exportAsFacetation, ref bodyRep, ref boundaryRep);
                            if (representations.Count == 1 && !IFCAnyHandleUtil.IsNullOrHasNoValue(boundaryRep))
                            {
                                // If the first site has no boundaryRep,
                                // we will add the boundaryRep from second site to it.
                                representations.Clear();
                                representations.Add(boundaryRep);
                                IFCAnyHandleUtil.AddProductRepresentations(siteHandle, representations);
                            }
                            appendedToSite = true;
                        }
                    }

                    if (!appendedToSite)
                    {
                        siteRepresentation = RepresentationUtil.CreateSurfaceProductDefinitionShape(exporterIFC, element, geometryElement, true, exportAsFacetation);
                    }
                }

                List <int>      latitude     = new List <int>();
                List <int>      longitude    = new List <int>();
                ProjectLocation projLocation = doc.ActiveProjectLocation;

                double unscaledElevation = 0.0;
                if (projLocation != null)
                {
                    const double scaleToDegrees = 180 / Math.PI;
                    double       latitudeInDeg  = projLocation.GetSiteLocation().Latitude *scaleToDegrees;
                    double       longitudeInDeg = projLocation.GetSiteLocation().Longitude *scaleToDegrees;

                    ExporterUtil.GetSafeProjectPositionElevation(doc, out unscaledElevation);

                    int latDeg     = ((int)latitudeInDeg); latitudeInDeg -= latDeg; latitudeInDeg *= 60;
                    int latMin     = ((int)latitudeInDeg); latitudeInDeg -= latMin; latitudeInDeg *= 60;
                    int latSec     = ((int)latitudeInDeg); latitudeInDeg -= latSec; latitudeInDeg *= 1000000;
                    int latFracSec = ((int)latitudeInDeg);
                    latitude.Add(latDeg);
                    latitude.Add(latMin);
                    latitude.Add(latSec);
                    if (!ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
                    {
                        latitude.Add(latFracSec);
                    }

                    int longDeg     = ((int)longitudeInDeg); longitudeInDeg -= longDeg; longitudeInDeg *= 60;
                    int longMin     = ((int)longitudeInDeg); longitudeInDeg -= longMin; longitudeInDeg *= 60;
                    int longSec     = ((int)longitudeInDeg); longitudeInDeg -= longSec; longitudeInDeg *= 1000000;
                    int longFracSec = ((int)longitudeInDeg);
                    longitude.Add(longDeg);
                    longitude.Add(longMin);
                    longitude.Add(longSec);
                    if (!ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
                    {
                        longitude.Add(longFracSec);
                    }
                }

                // Get elevation for site.
                double elevation = UnitUtil.ScaleLength(unscaledElevation);

                IFCAnyHandle relativePlacement = null;
                IFCAnyHandle localPlacement    = null;
                if (ExporterCacheManager.ExportOptionsCache.ExportingLink)
                {
                    relativePlacement = ExporterUtil.CreateAxis2Placement3D(file, UnitUtil.ScaleLength(ExporterCacheManager.HostRvtFileWCS.Origin), ExporterCacheManager.HostRvtFileWCS.BasisZ, ExporterCacheManager.HostRvtFileWCS.BasisX);
                    localPlacement    = IFCInstanceExporter.CreateLocalPlacement(file, null, relativePlacement);
                }
                else
                {
                    Transform wcs = GeometryUtil.GetWCS(doc);
                    if (wcs != null && !wcs.IsIdentity)
                    {
                        relativePlacement = ExporterUtil.CreateAxis2Placement3D(file, wcs.Origin, wcs.BasisZ, wcs.BasisX);
                        localPlacement    = IFCInstanceExporter.CreateLocalPlacement(file, null, relativePlacement);
                        ExporterCacheManager.HostRvtFileWCS        = wcs;
                        ExporterCacheManager.HostRvtFileWCS.Origin = UnitUtil.UnscaleLength(ExporterCacheManager.HostRvtFileWCS.Origin);
                    }
                    else
                    {
                        ExporterCacheManager.HostRvtFileWCS = Transform.Identity;
                    }
                }

                if (IFCAnyHandleUtil.IsNullOrHasNoValue(relativePlacement))
                {
                    relativePlacement = ExporterUtil.CreateAxis2Placement3D(file);
                }

                if (IFCAnyHandleUtil.IsNullOrHasNoValue(localPlacement))
                {
                    localPlacement = IFCInstanceExporter.CreateLocalPlacement(file, null, relativePlacement);
                }

                IFCAnyHandle ownerHistory   = ExporterCacheManager.OwnerHistoryHandle;
                string       siteObjectType = null;

                ProjectInfo projectInfo     = doc.ProjectInformation;
                Element     mainSiteElement = (element != null) ? element : projectInfo;

                string siteGUID            = null;
                string siteName            = null;
                string siteLongName        = null;
                string siteLandTitleNumber = null;
                string siteDescription     = null;
                bool   exportSite          = false;

                if ((element != null && IFCAnyHandleUtil.IsNullOrHasNoValue(siteHandle)) || (element == null))
                {
                    exportSite = true;

                    // We will use the Project Information site name as the primary name, if it exists.
                    siteGUID = (element != null) ? GUIDUtil.CreateSiteGUID(doc, element) : GUIDUtil.CreateProjectLevelGUID(doc, IFCProjectLevelGUIDType.Site);;

                    if (element != null)
                    {
                        siteName            = NamingUtil.GetNameOverride(element, NamingUtil.GetIFCName(element));
                        siteDescription     = NamingUtil.GetDescriptionOverride(element, null);
                        siteObjectType      = NamingUtil.GetObjectTypeOverride(element, null);
                        siteLongName        = NamingUtil.GetLongNameOverride(element, null);
                        siteLandTitleNumber = NamingUtil.GetOverrideStringValue(element, "IfcLandTitleNumber", null);
                    }
                    else
                    {
                        siteName = "Default";
                    }

                    siteName            = NamingUtil.GetOverrideStringValue(projectInfo, "SiteName", siteName);
                    siteDescription     = NamingUtil.GetOverrideStringValue(projectInfo, "SiteDescription", siteDescription);
                    siteObjectType      = NamingUtil.GetOverrideStringValue(projectInfo, "SiteObjectType", siteObjectType);
                    siteLongName        = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLongName", siteLongName);
                    siteLandTitleNumber = NamingUtil.GetOverrideStringValue(projectInfo, "SiteLandTitleNumber", siteLandTitleNumber);

                    if (element == null)
                    {
                        // don't bother exporting if we have nothing in the site whatsoever, and it is virtual.
                        if ((latitude.Count == 0 || longitude.Count == 0) &&
                            IFCAnyHandleUtil.IsNullOrHasNoValue(relativePlacement) &&
                            string.IsNullOrWhiteSpace(siteLongName) &&
                            string.IsNullOrWhiteSpace(siteLandTitleNumber))
                        {
                            return;
                        }
                    }
                }

                COBieProjectInfo cobieProjectInfo = ExporterCacheManager.ExportOptionsCache.COBieProjectInfo;
                // Override Site information when it is a special COBie export
                if (ExporterCacheManager.ExportOptionsCache.ExportAs2x3COBIE24DesignDeliverable && cobieProjectInfo != null)
                {
                    siteName        = cobieProjectInfo.SiteLocation;
                    siteDescription = cobieProjectInfo.SiteDescription;
                }

                if (exportSite)
                {
                    IFCAnyHandle address = null;
                    if (Exporter.NeedToCreateAddressForSite(doc))
                    {
                        address = Exporter.CreateIFCAddress(file, doc, projectInfo);
                    }

                    siteHandle = IFCInstanceExporter.CreateSite(exporterIFC, element, siteGUID, ownerHistory, siteName, siteDescription, siteObjectType, localPlacement,
                                                                siteRepresentation, siteLongName, IFCElementComposition.Element, latitude, longitude, elevation, siteLandTitleNumber, address);
                    productWrapper.AddSite(mainSiteElement, siteHandle);
                    ExporterCacheManager.SiteHandle = siteHandle;
                }


                tr.Commit();
            }
        }