Revit单构件导出IFC

对revit模型的应用中，由于模型过大，不得不进行模型拆分导出。本文针对模型单构件导出ifc，写了个小功能。revit支持只仅导出视图可见的模型，窗口操作如下图：

我们要用代码实现上述功能。
revit提供API用于导出IFC，是IFCExportOption，其中的AddOption（string name，string value）方法的参数name和value，是指导出option的name，以及相应的值，代码如下：

 public  static Result ExportToIfc(UIDocument uidoc,  Transaction transaction, string name, string Path){transaction.Start();Result r = Result.Failed;IFCExportOptions opt = new IFCExportOptions();opt.ExportBaseQuantities = true;// ExporterIFC exporter;opt.FilterViewId = uidoc.ActiveView.Id;//  exporter.GetOptions();opt.FileVersion = IFCVersion.IFC2x3;opt.AddOption("ExportIFCCommonPropertySets", true.ToString());opt.AddOption("UseActiveViewGeometry",true.ToString());// opt.AddOption("ExportVisibleElementsInView",true.ToString());//  opt.AddOption("Export only elements visible in view", true.ToString());opt.AddOption("TessellationLevelOfDetail", "0");opt.AddOption("ActiveViewId", uidoc.ActiveView.Id.ToString());uidoc.Document.Export(Path, name, opt);          transaction.Commit();r = Result.Succeeded;          return r;}#endregion

首先利用过滤器过滤项目中的全部构件（类别可能还是不全，根据需求调整）：

  #region 过滤构件//获取墙FilteredElementCollector CollectionWall = new FilteredElementCollector(doc, viewId);//    ElementFilter filterWall = new ElementCategoryFilter(BuiltInCategory.OST_Walls);ICollection<Element> eleWalls = CollectionWall.OfClass(typeof(Wall)).ToElements().ToList();elementList.AddRange(eleWalls);//风管FilteredElementCollector CollectionDuct = new FilteredElementCollector(doc, viewId);ICollection<Element> eleDucts = CollectionDuct.OfClass(typeof(Duct)).ToElements();elementList.AddRange(eleDucts);//获取自建族实例FilteredElementCollector CollectionFamIns = new FilteredElementCollector(doc, viewId);ICollection<Element> eleFamIns = CollectionFamIns.OfClass(typeof(FamilyInstance)).ToElements();elementList.AddRange(eleFamIns);//屋顶 roofFilteredElementCollector CollectionRoof = new FilteredElementCollector(doc, viewId);ICollection<Element> eleRoof = CollectionRoof.OfClass(typeof(RoofType)).ToElements();elementList.AddRange(eleRoof);//天花板 ceilingFilteredElementCollector CollectionCeil = new FilteredElementCollector(doc, viewId);ICollection<Element> eleCeil = CollectionCeil.OfClass(typeof(Ceiling)).ToElements();elementList.AddRange(eleCeil);//楼板 FloorFilteredElementCollector CollectionFloor = new FilteredElementCollector(doc, viewId);ICollection<Element> eleFloor = CollectionFloor.OfClass(typeof(Floor)).ToElements();elementList.AddRange(eleFloor);//管道 pipeFilteredElementCollector CollectionPipe = new FilteredElementCollector(doc, viewId);ICollection<Element> elePipe = CollectionPipe.OfClass(typeof(Pipe)).ToElements();elementList.AddRange(elePipe);//电缆桥架 CabletrayFilteredElementCollector CollectionCabletray = new FilteredElementCollector(doc, viewId);List<Element> eleCable = CollectionCabletray.OfClass(typeof(CableTray)).ToElements().ToList();elementList.AddRange(eleCable);//线管 conduitFilteredElementCollector CollectionCond = new FilteredElementCollector(doc, viewId);ICollection<Element> eleCond = CollectionCond.OfClass(typeof(Conduit)).ToElements();elementList.AddRange(eleCond);//楼梯  stair//FilteredElementCollector CollectionStair = new FilteredElementCollector(doc, viewId);//ICollection<Element> eleStair = CollectionStair.OfClass(typeof(Stairs)).ToElements();//elementList.AddRange(eleStair);//扶手 railingFilteredElementCollector CollectionRail = new FilteredElementCollector(doc, viewId);ICollection<Element> eleRail = CollectionRail.OfClass(typeof(Railing)).ToElements();elementList.AddRange(eleRail);//扶手顶端 toprailingFilteredElementCollector CollectionTopRail = new FilteredElementCollector(doc, viewId);ICollection<Element> eleTopRail = CollectionTopRail.OfClass(typeof(TopRail)).ToElements();elementList.AddRange(eleTopRail);//梁(beam和FamilySymbol类型)FilteredElementCollector CollectionBeam = new FilteredElementCollector(doc, viewId);ICollection<Element> eleBeam = CollectionBeam.OfClass(typeof(BeamSystem)).ToElements();elementList.AddRange(eleBeam);//幕墙竖梃FilteredElementCollector CollectionMullion = new FilteredElementCollector(doc, viewId);ICollection<Element> eleMullion = CollectionMullion.OfClass(typeof(MullionType)).ToElements();elementList.AddRange(eleMullion);其他 family类型FilteredElementCollector CollectionFamily = new FilteredElementCollector(doc);ICollection<Element> eleFamily = CollectionRail.OfClass(typeof(Family)).ToElements();elementList.AddRange(eleFamily);// 其他 Element//FilteredElementCollector CollectionElement = new FilteredElementCollector(doc);//ICollection<Element> eleElement = CollectionElement.OfClass(typeof(ElementType)).ToElements();//elementList.AddRange(eleElement);//TaskDialog.Show("提示", "Element：" + eleElement.Count);#region Category针对性分类//其他读不到的针对性分类element类型（楼梯）FilteredElementCollector CollectionStairs = new FilteredElementCollector(doc, viewId);ElementFilter StairsFilter = new ElementCategoryFilter(BuiltInCategory.OST_Stairs);ICollection<Element> eleStairs = CollectionStairs.WherePasses(StairsFilter).ToElements();elementList.AddRange(eleStairs);//坡道FilteredElementCollector CollectionRamps = new FilteredElementCollector(doc, viewId);ElementFilter RampsFilter = new ElementCategoryFilter(BuiltInCategory.OST_Ramps);ICollection<Element> eleRamps = CollectionRamps.WherePasses(RampsFilter).ToElements();elementList.AddRange(eleRamps);//洞口截面FilteredElementCollector CollectionCeilingOpening = new FilteredElementCollector(doc, viewId);ElementFilter CeilingOpeningFilter = new ElementCategoryFilter(BuiltInCategory.OST_CeilingOpening);ICollection<Element> eleCeilingOpening = CollectionCeilingOpening.WherePasses(CeilingOpeningFilter).ToElements();elementList.AddRange(eleCeilingOpening);//Group类型FilteredElementCollector CollectionGroup = new FilteredElementCollector(doc, viewId);          ElementFilter GroupFilter = new ElementCategoryFilter(BuiltInCategory.OST_IOSModelGroups);ICollection<Element> eleGroup = CollectionGroup.WherePasses(GroupFilter).ToElements();elementList.AddRange(eleGroup);Panel类型//FilteredElementCollector CollectionPanel = new FilteredElementCollector(doc, viewId);//ElementFilter PanelFilter = new ElementCategoryFilter(BuiltInCategory.OST_CurtainWallPanels);//ICollection<Element> elePanel = CollectionPanel.WherePasses(PanelFilter).ToElements();//elementList.AddRange(elePanel);//TaskDialog.Show("提示", "panel：" + elePanel.Count);#endregion

导出时用隐藏模型，仅导出视图可见模型：

 #region 隐藏构件导出模型Transaction tr = new Transaction(doc, "tr");Transaction tran = new Transaction(doc, "tran");View view = uidoc.ActiveView;foreach (Element element in elementList){List<ElementId> HideShowEleIds = new List<ElementId>();tr.Start();ElementId e = viewId;foreach (ElementId elementId in elementIdList){if (elementId == element.Id){e = elementId;}else{HideShowEleIds.Add(elementId);}}view.HideElements(HideShowEleIds);string  name = element.Id.ToString();tr.Commit();ExportToIfc(uidoc, tr, element.Id.ToString(), Path);tran.Start();view.UnhideElements(HideShowEleIds);tran.Commit();}#endregion

整个代码为：

using System;
using System.Windows;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Architecture;
using Autodesk.Revit.DB.Electrical;
using Autodesk.Revit.DB.Mechanical;
using Autodesk.Revit.DB.Plumbing;
using Autodesk.Revit.UI;
using Autodesk.Revit.DB.IFC;
using Autodesk.Revit.DB.ExternalService;
using Autodesk.Revit.DB.Events;namespace IFCExport
{[Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]public class Class1 : IExternalCommand{#regionpublic Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements){UIApplication uiapp = commandData.Application;UIDocument uidoc = uiapp.ActiveUIDocument;Document doc = uidoc.Document;ElementId viewId = uidoc.ActiveView.Id;List<Element> elementList = new List<Element>();List<ElementId> elementIdList = new List<ElementId>();string Path = "";System.Windows.Forms.FolderBrowserDialog dialog = new System.Windows.Forms.FolderBrowserDialog();dialog.Description = "请选择ifc的目标文件夹";if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK){if (string.IsNullOrEmpty(dialog.SelectedPath)){TaskDialog.Show("提示", "路径不能为空！");}else{Path = dialog.SelectedPath;}}#region 过滤构件//获取墙FilteredElementCollector CollectionWall = new FilteredElementCollector(doc, viewId);//    ElementFilter filterWall = new ElementCategoryFilter(BuiltInCategory.OST_Walls);ICollection<Element> eleWalls = CollectionWall.OfClass(typeof(Wall)).ToElements().ToList();elementList.AddRange(eleWalls);//风管FilteredElementCollector CollectionDuct = new FilteredElementCollector(doc, viewId);ICollection<Element> eleDucts = CollectionDuct.OfClass(typeof(Duct)).ToElements();elementList.AddRange(eleDucts);//获取自建族实例FilteredElementCollector CollectionFamIns = new FilteredElementCollector(doc, viewId);ICollection<Element> eleFamIns = CollectionFamIns.OfClass(typeof(FamilyInstance)).ToElements();elementList.AddRange(eleFamIns);//屋顶 roofFilteredElementCollector CollectionRoof = new FilteredElementCollector(doc, viewId);ICollection<Element> eleRoof = CollectionRoof.OfClass(typeof(RoofType)).ToElements();elementList.AddRange(eleRoof);//天花板 ceilingFilteredElementCollector CollectionCeil = new FilteredElementCollector(doc, viewId);ICollection<Element> eleCeil = CollectionCeil.OfClass(typeof(Ceiling)).ToElements();elementList.AddRange(eleCeil);//楼板 FloorFilteredElementCollector CollectionFloor = new FilteredElementCollector(doc, viewId);ICollection<Element> eleFloor = CollectionFloor.OfClass(typeof(Floor)).ToElements();elementList.AddRange(eleFloor);//管道 pipeFilteredElementCollector CollectionPipe = new FilteredElementCollector(doc, viewId);ICollection<Element> elePipe = CollectionPipe.OfClass(typeof(Pipe)).ToElements();elementList.AddRange(elePipe);//电缆桥架 CabletrayFilteredElementCollector CollectionCabletray = new FilteredElementCollector(doc, viewId);List<Element> eleCable = CollectionCabletray.OfClass(typeof(CableTray)).ToElements().ToList();elementList.AddRange(eleCable);//线管 conduitFilteredElementCollector CollectionCond = new FilteredElementCollector(doc, viewId);ICollection<Element> eleCond = CollectionCond.OfClass(typeof(Conduit)).ToElements();elementList.AddRange(eleCond);//楼梯  stair//FilteredElementCollector CollectionStair = new FilteredElementCollector(doc, viewId);//ICollection<Element> eleStair = CollectionStair.OfClass(typeof(Stairs)).ToElements();//elementList.AddRange(eleStair);//扶手 railingFilteredElementCollector CollectionRail = new FilteredElementCollector(doc, viewId);ICollection<Element> eleRail = CollectionRail.OfClass(typeof(Railing)).ToElements();elementList.AddRange(eleRail);//扶手顶端 toprailingFilteredElementCollector CollectionTopRail = new FilteredElementCollector(doc, viewId);ICollection<Element> eleTopRail = CollectionTopRail.OfClass(typeof(TopRail)).ToElements();elementList.AddRange(eleTopRail);//梁(beam和FamilySymbol类型)FilteredElementCollector CollectionBeam = new FilteredElementCollector(doc, viewId);ICollection<Element> eleBeam = CollectionBeam.OfClass(typeof(BeamSystem)).ToElements();elementList.AddRange(eleBeam);//幕墙竖梃FilteredElementCollector CollectionMullion = new FilteredElementCollector(doc, viewId);ICollection<Element> eleMullion = CollectionMullion.OfClass(typeof(MullionType)).ToElements();elementList.AddRange(eleMullion);其他 family类型FilteredElementCollector CollectionFamily = new FilteredElementCollector(doc);ICollection<Element> eleFamily = CollectionRail.OfClass(typeof(Family)).ToElements();elementList.AddRange(eleFamily);// 其他 Element//FilteredElementCollector CollectionElement = new FilteredElementCollector(doc);//ICollection<Element> eleElement = CollectionElement.OfClass(typeof(ElementType)).ToElements();//elementList.AddRange(eleElement);//TaskDialog.Show("提示", "Element：" + eleElement.Count);#region Category针对性分类//其他读不到的针对性分类element类型（楼梯）FilteredElementCollector CollectionStairs = new FilteredElementCollector(doc, viewId);ElementFilter StairsFilter = new ElementCategoryFilter(BuiltInCategory.OST_Stairs);ICollection<Element> eleStairs = CollectionStairs.WherePasses(StairsFilter).ToElements();elementList.AddRange(eleStairs);//坡道FilteredElementCollector CollectionRamps = new FilteredElementCollector(doc, viewId);ElementFilter RampsFilter = new ElementCategoryFilter(BuiltInCategory.OST_Ramps);ICollection<Element> eleRamps = CollectionRamps.WherePasses(RampsFilter).ToElements();elementList.AddRange(eleRamps);//洞口截面FilteredElementCollector CollectionCeilingOpening = new FilteredElementCollector(doc, viewId);ElementFilter CeilingOpeningFilter = new ElementCategoryFilter(BuiltInCategory.OST_CeilingOpening);ICollection<Element> eleCeilingOpening = CollectionCeilingOpening.WherePasses(CeilingOpeningFilter).ToElements();elementList.AddRange(eleCeilingOpening);//Group类型FilteredElementCollector CollectionGroup = new FilteredElementCollector(doc, viewId);          ElementFilter GroupFilter = new ElementCategoryFilter(BuiltInCategory.OST_IOSModelGroups);ICollection<Element> eleGroup = CollectionGroup.WherePasses(GroupFilter).ToElements();elementList.AddRange(eleGroup);Panel类型//FilteredElementCollector CollectionPanel = new FilteredElementCollector(doc, viewId);//ElementFilter PanelFilter = new ElementCategoryFilter(BuiltInCategory.OST_CurtainWallPanels);//ICollection<Element> elePanel = CollectionPanel.WherePasses(PanelFilter).ToElements();//elementList.AddRange(elePanel);//TaskDialog.Show("提示", "panel：" + elePanel.Count);#endregion#endregion//遍历element foreach (var ele in elementList){               //  FamilyInstance fam = ele as FamilyInstance;if (ele != null && !(ele is Panel)){                    elementIdList.Add(ele.Id);}}#region 隐藏构件导出模型Transaction tr = new Transaction(doc, "tr");Transaction tran = new Transaction(doc, "tran");Transaction transaction = new Transaction(doc,"delect");View view = uidoc.ActiveView;foreach (Element element in elementList){List<ElementId> HideShowEleIds = new List<ElementId>();tr.Start();ElementId e = viewId;foreach (ElementId elementId in elementIdList){if (elementId == element.Id){e = elementId;}else{HideShowEleIds.Add(elementId);}}view.HideElements(HideShowEleIds);string  name = element.Id.ToString();tr.Commit();ExportToIfc(uidoc, tr, element.Id.ToString(), Path);tran.Start();view.UnhideElements(HideShowEleIds);tran.Commit();transaction.Start();elementIdList.Remove(element.Id);doc.Delete(element.Id);transaction.Commit();}#endregionreturn Result.Succeeded;}#endregion#region exportToifcpublic  static Result ExportToIfc(UIDocument uidoc,  Transaction transaction, string name, string Path){transaction.Start();Result r = Result.Failed;IFCExportOptions opt = new IFCExportOptions();opt.ExportBaseQuantities = true;// ExporterIFC exporter;opt.FilterViewId = uidoc.ActiveView.Id;//  exporter.GetOptions();opt.FileVersion = IFCVersion.IFC2x3;opt.AddOption("ExportIFCCommonPropertySets", true.ToString());opt.AddOption("UseActiveViewGeometry",true.ToString());// opt.AddOption("ExportVisibleElementsInView",true.ToString());//  opt.AddOption("Export only elements visible in view", true.ToString());opt.AddOption("TessellationLevelOfDetail", "0");opt.AddOption("ActiveViewId", uidoc.ActiveView.Id.ToString());uidoc.Document.Export(Path, name, opt);          transaction.Commit();r = Result.Succeeded;return r;}#endregion }
}

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