/// <summary> /// Gets the material Id of the first layer of the host object. /// </summary> /// <param name="hostObject">The host object.</param> /// <returns>The material id.</returns> public static ElementId GetFirstLayerMaterialId(HostObject hostObject) { ElementId typeElemId = hostObject.GetTypeId(); HostObjAttributes hostObjAttr = hostObject.Document.GetElement(typeElemId) as HostObjAttributes; if (hostObjAttr == null) { return(ElementId.InvalidElementId); } CompoundStructure cs = hostObjAttr.GetCompoundStructure(); if (cs != null) { ElementId matId = cs.LayerCount > 0 ? cs.GetMaterialId(0) : ElementId.InvalidElementId; if (matId != ElementId.InvalidElementId) { return(matId); } else { return(CategoryUtil.GetBaseMaterialIdForElement(hostObject)); }; } return(ElementId.InvalidElementId); }
/// <summary> /// Gets the material ids of finish function of the host object. /// </summary> /// <param name="hostObject">The host object.</param> /// <returns>The material ids.</returns> public static ISet <ElementId> GetFinishMaterialIds(HostObject hostObject) { HashSet <ElementId> matIds = new HashSet <ElementId>(); ElementId typeElemId = hostObject.GetTypeId(); HostObjAttributes hostObjAttr = hostObject.Document.GetElement(typeElemId) as HostObjAttributes; if (hostObjAttr == null) { return(matIds); } ElementId baseMatId = CategoryUtil.GetBaseMaterialIdForElement(hostObject); CompoundStructure cs = hostObjAttr.GetCompoundStructure(); if (cs != null) { for (int i = 0; i < cs.LayerCount; ++i) { MaterialFunctionAssignment function = cs.GetLayerFunction(i); if (function == MaterialFunctionAssignment.Finish1 || function == MaterialFunctionAssignment.Finish2) { ElementId matId = cs.GetMaterialId(i); if (matId != ElementId.InvalidElementId) { matIds.Add(matId); } else if (baseMatId != ElementId.InvalidElementId) { matIds.Add(baseMatId); } } } } return(matIds); }
/// <summary> /// Exports materials for host object. /// </summary> /// <param name="exporterIFC">The ExporterIFC object.</param> /// <param name="hostObject">The host object.</param> /// <param name="elemHnds">The host IFC handles.</param> /// <param name="geometryElement">The geometry element.</param> /// <param name="productWrapper">The ProductWrapper.</param> /// <param name="levelId">The level id.</param> /// <param name="direction">The IFCLayerSetDirection.</param> /// <param name="containsBRepGeometry">True if the geometry contains BRep geoemtry. If so, we will export an IfcMaterialList</param> /// <returns>True if exported successfully, false otherwise.</returns> public static bool ExportHostObjectMaterials(ExporterIFC exporterIFC, HostObject hostObject, IList <IFCAnyHandle> elemHnds, GeometryElement geometryElement, ProductWrapper productWrapper, ElementId levelId, Toolkit.IFCLayerSetDirection direction, bool containsBRepGeometry) { if (hostObject == null) { return(true); //nothing to do } if (elemHnds == null || (elemHnds.Count == 0)) { return(true); //nothing to do } IFCFile file = exporterIFC.GetFile(); using (IFCTransaction tr = new IFCTransaction(file)) { if (productWrapper != null) { productWrapper.ClearFinishMaterials(); } double scaledOffset = 0.0, scaledWallWidth = 0.0, wallHeight = 0.0; Wall wall = hostObject as Wall; if (wall != null) { scaledWallWidth = UnitUtil.ScaleLength(wall.Width); scaledOffset = -scaledWallWidth / 2.0; BoundingBoxXYZ boundingBox = wall.get_BoundingBox(null); if (boundingBox != null) { wallHeight = boundingBox.Max.Z - boundingBox.Min.Z; } } ElementId typeElemId = hostObject.GetTypeId(); IFCAnyHandle materialLayerSet = ExporterCacheManager.MaterialLayerSetCache.Find(typeElemId); // Roofs with no components are only allowed one material. We will arbitrarily choose the thickest material. IFCAnyHandle primaryMaterialHnd = ExporterCacheManager.MaterialLayerSetCache.FindPrimaryMaterialHnd(typeElemId); if (IFCAnyHandleUtil.IsNullOrHasNoValue(materialLayerSet)) { HostObjAttributes hostObjAttr = hostObject.Document.GetElement(typeElemId) as HostObjAttributes; if (hostObjAttr == null) { return(true); //nothing to do } List <ElementId> matIds = new List <ElementId>(); List <double> widths = new List <double>(); List <MaterialFunctionAssignment> functions = new List <MaterialFunctionAssignment>(); ElementId baseMatId = CategoryUtil.GetBaseMaterialIdForElement(hostObject); CompoundStructure cs = hostObjAttr.GetCompoundStructure(); if (cs != null) { //TODO: Vertically compound structures are not yet supported by export. if (!cs.IsVerticallyHomogeneous() && !MathUtil.IsAlmostZero(wallHeight)) { cs = cs.GetSimpleCompoundStructure(wallHeight, wallHeight / 2.0); } for (int i = 0; i < cs.LayerCount; ++i) { ElementId matId = cs.GetMaterialId(i); if (matId != ElementId.InvalidElementId) { matIds.Add(matId); } else { matIds.Add(baseMatId); } widths.Add(cs.GetLayerWidth(i)); // save layer function into ProductWrapper, // it's used while exporting "Function" of Pset_CoveringCommon functions.Add(cs.GetLayerFunction(i)); } } if (matIds.Count == 0) { matIds.Add(baseMatId); widths.Add(cs != null ? cs.GetWidth() : 0); functions.Add(MaterialFunctionAssignment.None); } // We can't create IfcMaterialLayers without creating an IfcMaterialLayerSet. So we will simply collate here. IList <IFCAnyHandle> materialHnds = new List <IFCAnyHandle>(); IList <int> widthIndices = new List <int>(); double thickestLayer = 0.0; for (int ii = 0; ii < matIds.Count; ++ii) { // Require positive width for IFC2x3 and before, and non-negative width for IFC4. if (widths[ii] < -MathUtil.Eps()) { continue; } bool almostZeroWidth = MathUtil.IsAlmostZero(widths[ii]); if (ExporterCacheManager.ExportOptionsCache.FileVersion != IFCVersion.IFC4 && almostZeroWidth) { continue; } if (almostZeroWidth) { widths[ii] = 0.0; } IFCAnyHandle materialHnd = CategoryUtil.GetOrCreateMaterialHandle(exporterIFC, matIds[ii]); if (primaryMaterialHnd == null || (widths[ii] > thickestLayer)) { primaryMaterialHnd = materialHnd; thickestLayer = widths[ii]; } widthIndices.Add(ii); materialHnds.Add(materialHnd); if ((productWrapper != null) && (functions[ii] == MaterialFunctionAssignment.Finish1 || functions[ii] == MaterialFunctionAssignment.Finish2)) { productWrapper.AddFinishMaterial(materialHnd); } } int numLayersToCreate = widthIndices.Count; if (numLayersToCreate == 0) { return(false); } if (!containsBRepGeometry) { IList <IFCAnyHandle> layers = new List <IFCAnyHandle>(numLayersToCreate); for (int ii = 0; ii < numLayersToCreate; ii++) { int widthIndex = widthIndices[ii]; double scaledWidth = UnitUtil.ScaleLength(widths[widthIndex]); IFCAnyHandle materialLayer = IFCInstanceExporter.CreateMaterialLayer(file, materialHnds[ii], scaledWidth, null); layers.Add(materialLayer); } string layerSetName = exporterIFC.GetFamilyName(); materialLayerSet = IFCInstanceExporter.CreateMaterialLayerSet(file, layers, layerSetName); ExporterCacheManager.MaterialLayerSetCache.Register(typeElemId, materialLayerSet); ExporterCacheManager.MaterialLayerSetCache.RegisterPrimaryMaterialHnd(typeElemId, primaryMaterialHnd); } else { foreach (IFCAnyHandle elemHnd in elemHnds) { CategoryUtil.CreateMaterialAssociations(exporterIFC, elemHnd, matIds); } } } // IfcMaterialLayerSetUsage is not supported for IfcWall, only IfcWallStandardCase. IFCAnyHandle layerSetUsage = null; for (int ii = 0; ii < elemHnds.Count; ii++) { IFCAnyHandle elemHnd = elemHnds[ii]; if (IFCAnyHandleUtil.IsNullOrHasNoValue(elemHnd)) { continue; } SpaceBoundingElementUtil.RegisterSpaceBoundingElementHandle(exporterIFC, elemHnd, hostObject.Id, levelId); if (containsBRepGeometry) { continue; } HashSet <IFCAnyHandle> relDecomposesSet = IFCAnyHandleUtil.GetRelDecomposes(elemHnd); IList <IFCAnyHandle> subElemHnds = null; if (relDecomposesSet != null && relDecomposesSet.Count == 1) { IFCAnyHandle relAggregates = relDecomposesSet.First(); if (IFCAnyHandleUtil.IsTypeOf(relAggregates, IFCEntityType.IfcRelAggregates)) { subElemHnds = IFCAnyHandleUtil.GetAggregateInstanceAttribute <List <IFCAnyHandle> >(relAggregates, "RelatedObjects"); } } bool hasSubElems = (subElemHnds != null && subElemHnds.Count != 0); bool isRoof = IFCAnyHandleUtil.IsTypeOf(elemHnd, IFCEntityType.IfcRoof); if (!hasSubElems && !isRoof && !IFCAnyHandleUtil.IsTypeOf(elemHnd, IFCEntityType.IfcWall)) { if (layerSetUsage == null) { bool flipDirSense = true; if (wall != null) { // if we have flipped the center curve on export, we need to take that into account here. // We flip the center curve on export if it is an arc and it has a negative Z direction. LocationCurve locCurve = wall.Location as LocationCurve; if (locCurve != null) { Curve curve = locCurve.Curve; Plane defPlane = new Plane(XYZ.BasisX, XYZ.BasisY, XYZ.Zero); bool curveFlipped = GeometryUtil.MustFlipCurve(defPlane, curve); flipDirSense = !(wall.Flipped ^ curveFlipped); } } else if (hostObject is Floor) { flipDirSense = false; } double offsetFromReferenceLine = flipDirSense ? -scaledOffset : scaledOffset; IFCDirectionSense sense = flipDirSense ? IFCDirectionSense.Negative : IFCDirectionSense.Positive; layerSetUsage = IFCInstanceExporter.CreateMaterialLayerSetUsage(file, materialLayerSet, direction, sense, offsetFromReferenceLine); } ExporterCacheManager.MaterialLayerRelationsCache.Add(layerSetUsage, elemHnd); } else { if (hasSubElems) { foreach (IFCAnyHandle subElemHnd in subElemHnds) { if (!IFCAnyHandleUtil.IsNullOrHasNoValue(subElemHnd)) { ExporterCacheManager.MaterialLayerRelationsCache.Add(materialLayerSet, subElemHnd); } } } else if (!isRoof) { ExporterCacheManager.MaterialLayerRelationsCache.Add(materialLayerSet, elemHnd); } else if (primaryMaterialHnd != null) { ExporterCacheManager.MaterialLayerRelationsCache.Add(primaryMaterialHnd, elemHnd); } } } tr.Commit(); return(true); } }
/// <summary> /// Exports an element as IFC railing. /// </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 ExportRailing(ExporterIFC exporterIFC, Element element, GeometryElement geomElem, string ifcEnumType, ProductWrapper productWrapper) { // Check the intended IFC entity or type name is in the exclude list specified in the UI Common.Enums.IFCEntityType elementClassTypeEnum = Common.Enums.IFCEntityType.IfcRailing; if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum)) { return; } ElementType elemType = element.Document.GetElement(element.GetTypeId()) as ElementType; IFCFile file = exporterIFC.GetFile(); Options geomOptions = GeometryUtil.GetIFCExportGeometryOptions(); using (IFCTransaction transaction = new IFCTransaction(file)) { // Check for containment override IFCAnyHandle overrideContainerHnd = null; ElementId overrideContainerId = ParameterUtil.OverrideContainmentParameter(exporterIFC, element, out overrideContainerHnd); using (PlacementSetter setter = PlacementSetter.Create(exporterIFC, element, null, null, overrideContainerId, overrideContainerHnd)) { using (IFCExtrusionCreationData ecData = new IFCExtrusionCreationData()) { IFCAnyHandle localPlacement = setter.LocalPlacement; StairRampContainerInfo stairRampInfo = null; ElementId hostId = GetStairOrRampHostId(exporterIFC, element as Railing); Transform inverseTrf = Transform.Identity; if (hostId != ElementId.InvalidElementId) { stairRampInfo = ExporterCacheManager.StairRampContainerInfoCache.GetStairRampContainerInfo(hostId); IFCAnyHandle stairRampLocalPlacement = stairRampInfo.LocalPlacements[0]; Transform relTrf = ExporterIFCUtils.GetRelativeLocalPlacementOffsetTransform(stairRampLocalPlacement, localPlacement); inverseTrf = relTrf.Inverse; IFCAnyHandle railingLocalPlacement = ExporterUtil.CreateLocalPlacement(file, stairRampLocalPlacement, inverseTrf.Origin, inverseTrf.BasisZ, inverseTrf.BasisX); localPlacement = railingLocalPlacement; } ecData.SetLocalPlacement(localPlacement); SolidMeshGeometryInfo solidMeshInfo = GeometryUtil.GetSplitSolidMeshGeometry(geomElem); IList <Solid> solids = solidMeshInfo.GetSolids(); IList <Mesh> meshes = solidMeshInfo.GetMeshes(); IList <GeometryObject> gObjs = FamilyExporterUtil.RemoveInvisibleSolidsAndMeshes(element.Document, exporterIFC, ref solids, ref meshes); Railing railingElem = element as Railing; IList <ElementId> subElementIds = CollectSubElements(railingElem); foreach (ElementId subElementId in subElementIds) { Element subElement = railingElem.Document.GetElement(subElementId); if (subElement != null) { GeometryElement subElementGeom = GeometryUtil.GetOneLevelGeometryElement(subElement.get_Geometry(geomOptions), 0); SolidMeshGeometryInfo subElementSolidMeshInfo = GeometryUtil.GetSplitSolidMeshGeometry(subElementGeom); IList <Solid> subElemSolids = subElementSolidMeshInfo.GetSolids(); IList <Mesh> subElemMeshes = subElementSolidMeshInfo.GetMeshes(); IList <GeometryObject> partGObjs = FamilyExporterUtil.RemoveInvisibleSolidsAndMeshes(element.Document, exporterIFC, ref subElemSolids, ref subElemMeshes); foreach (Solid subElSolid in subElemSolids) { solids.Add(subElSolid); } foreach (Mesh subElMesh in subElemMeshes) { meshes.Add(subElMesh); } } } ElementId catId = CategoryUtil.GetSafeCategoryId(element); BodyData bodyData = null; BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true, ExportOptionsCache.ExportTessellationLevel.Medium); if (solids.Count > 0 || meshes.Count > 0) { bodyData = BodyExporter.ExportBody(exporterIFC, element, catId, ElementId.InvalidElementId, solids, meshes, bodyExporterOptions, ecData); } else { IList <GeometryObject> geomlist = new List <GeometryObject>(); geomlist.Add(geomElem); bodyData = BodyExporter.ExportBody(exporterIFC, element, catId, ElementId.InvalidElementId, geomlist, bodyExporterOptions, ecData); } IFCAnyHandle bodyRep = bodyData.RepresentationHnd; if (IFCAnyHandleUtil.IsNullOrHasNoValue(bodyRep)) { if (ecData != null) { ecData.ClearOpenings(); } return; } IList <IFCAnyHandle> representations = new List <IFCAnyHandle>(); representations.Add(bodyRep); IList <GeometryObject> geomObjects = new List <GeometryObject>(solids); foreach (Mesh mesh in meshes) { geomObjects.Add(mesh); } Transform boundingBoxTrf = (bodyData.OffsetTransform != null) ? bodyData.OffsetTransform.Inverse : Transform.Identity; boundingBoxTrf = inverseTrf.Multiply(boundingBoxTrf); IFCAnyHandle boundingBoxRep = BoundingBoxExporter.ExportBoundingBox(exporterIFC, geomObjects, boundingBoxTrf); if (boundingBoxRep != null) { representations.Add(boundingBoxRep); } IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations); IFCAnyHandle ownerHistory = ExporterCacheManager.OwnerHistoryHandle; string instanceGUID = GUIDUtil.CreateGUID(element); IFCExportInfoPair exportInfo = ExporterUtil.GetProductExportType(exporterIFC, element, out ifcEnumType); IFCAnyHandle railing = IFCInstanceExporter.CreateGenericIFCEntity(exportInfo, exporterIFC, element, instanceGUID, ownerHistory, ecData.GetLocalPlacement(), prodRep); bool associateToLevel = (hostId == ElementId.InvalidElementId); productWrapper.AddElement(element, railing, setter, ecData, associateToLevel, exportInfo); OpeningUtil.CreateOpeningsIfNecessary(railing, element, ecData, bodyData.OffsetTransform, exporterIFC, ecData.GetLocalPlacement(), setter, productWrapper); IFCAnyHandle singleMaterialOverrideHnd = null; IList <ElementId> matIds = null; ElementId defaultMatId = ElementId.InvalidElementId; ElementId matId = CategoryUtil.GetBaseMaterialIdForElement(element); // Get IfcSingleMaterialOverride to work for railing singleMaterialOverrideHnd = ExporterUtil.GetSingleMaterial(exporterIFC, element, matId); if (singleMaterialOverrideHnd != null) { matIds = new List <ElementId> { matId }; } else { matIds = bodyData.MaterialIds; defaultMatId = matIds[0]; // Check if all the items are the same, then get the first material id if (matIds.All(x => x == defaultMatId)) { matIds = new List <ElementId> { defaultMatId }; } } CategoryUtil.CreateMaterialAssociationWithShapeAspect(exporterIFC, element, railing, bodyData.RepresentationItemInfo); // Create multi-story duplicates of this railing. if (stairRampInfo != null) { stairRampInfo.AddComponent(0, railing); List <IFCAnyHandle> stairHandles = stairRampInfo.StairOrRampHandles; for (int ii = 1; ii < stairHandles.Count; ii++) { IFCAnyHandle railingLocalPlacement = stairRampInfo.LocalPlacements[ii]; if (!IFCAnyHandleUtil.IsNullOrHasNoValue(railingLocalPlacement)) { IFCAnyHandle railingHndCopy = CopyRailingHandle(exporterIFC, element, catId, railingLocalPlacement, railing); stairRampInfo.AddComponent(ii, railingHndCopy); productWrapper.AddElement(element, railingHndCopy, (IFCLevelInfo)null, ecData, false, exportInfo); CategoryUtil.CreateMaterialAssociationWithShapeAspect(exporterIFC, element, railingHndCopy, bodyData.RepresentationItemInfo); } } ExporterCacheManager.StairRampContainerInfoCache.AddStairRampContainerInfo(hostId, stairRampInfo); } } transaction.Commit(); } } }