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
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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 roof
FilteredElementCollector CollectionRoof = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleRoof = CollectionRoof.OfClass(typeof(RoofType)).ToElements();
elementList.AddRange(eleRoof);

//天花板 ceiling
FilteredElementCollector CollectionCeil = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleCeil = CollectionCeil.OfClass(typeof(Ceiling)).ToElements();
elementList.AddRange(eleCeil);

            //楼板 Floor
FilteredElementCollector CollectionFloor = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleFloor = CollectionFloor.OfClass(typeof(Floor)).ToElements();
elementList.AddRange(eleFloor);

//管道 pipe
FilteredElementCollector CollectionPipe = new FilteredElementCollector(doc, viewId);
ICollection<Element> elePipe = CollectionPipe.OfClass(typeof(Pipe)).ToElements();
elementList.AddRange(elePipe);

//电缆桥架 Cabletray
FilteredElementCollector CollectionCabletray = new FilteredElementCollector(doc, viewId);
List<Element> eleCable = CollectionCabletray.OfClass(typeof(CableTray)).ToElements().ToList();
elementList.AddRange(eleCable);

            //线管 conduit
FilteredElementCollector 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 railing
FilteredElementCollector CollectionRail = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleRail = CollectionRail.OfClass(typeof(Railing)).ToElements();
elementList.AddRange(eleRail);

//扶手顶端 toprailing
FilteredElementCollector 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
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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
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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
{
#region
public 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 roof
FilteredElementCollector CollectionRoof = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleRoof = CollectionRoof.OfClass(typeof(RoofType)).ToElements();
elementList.AddRange(eleRoof);

//天花板 ceiling
FilteredElementCollector CollectionCeil = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleCeil = CollectionCeil.OfClass(typeof(Ceiling)).ToElements();
elementList.AddRange(eleCeil);

            //楼板 Floor
FilteredElementCollector CollectionFloor = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleFloor = CollectionFloor.OfClass(typeof(Floor)).ToElements();
elementList.AddRange(eleFloor);

//管道 pipe
FilteredElementCollector CollectionPipe = new FilteredElementCollector(doc, viewId);
ICollection<Element> elePipe = CollectionPipe.OfClass(typeof(Pipe)).ToElements();
elementList.AddRange(elePipe);

//电缆桥架 Cabletray
FilteredElementCollector CollectionCabletray = new FilteredElementCollector(doc, viewId);
List<Element> eleCable = CollectionCabletray.OfClass(typeof(CableTray)).ToElements().ToList();
elementList.AddRange(eleCable);

            //线管 conduit
FilteredElementCollector 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 railing
FilteredElementCollector CollectionRail = new FilteredElementCollector(doc, viewId);
ICollection<Element> eleRail = CollectionRail.OfClass(typeof(Railing)).ToElements();
elementList.AddRange(eleRail);

//扶手顶端 toprailing
FilteredElementCollector 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();
}
#endregion
return Result.Succeeded;
}
#endregion
#region exportToifc
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 
}
}

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版权声明：本文为CSDN博主「李小喵Y」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_36266612/article/details/85047457