Revit二次開發實戰04（元素搜集過濾器FilteredElementCollector）|天天新視野

Revit二次開發實戰

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FilteredElementCollector元素搜集過濾器

源碼

using Autodesk.Revit.Attributes;using Autodesk.Revit.DB;using Autodesk.Revit.DB.Architecture;using Autodesk.Revit.UI;using Autodesk.Revit.UI.Selection;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace RevitHello{    [Transaction(TransactionMode.Manual)]    class CElement : IExternalCommand    {        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)        {            //獲取當前UI文檔            UIDocument uidoc = commandData.Application.ActiveUIDocument;            //獲取當前文檔            Document doc = uidoc.Document;            //創建搜集過濾器            //■構造函數1，搜集文檔中所有元素            FilteredElementCollector collector1 = new FilteredElementCollector(doc);            //按照類別進行過濾            FilteredElementCollector filtered1 = collector1.OfCategory(BuiltInCategory.OST_Doors);            ShowElements(filtered1, uidoc, "filtered1");            //選擇多個對象，并獲取其id集合            var refs = uidoc.Selection.PickObjects(ObjectType.Element);            List ids = new List();            refs.ToList().ForEach(r => ids.Add(r.ElementId));            //■構造函數2，搜集集合中的元素            FilteredElementCollector collector2 = new FilteredElementCollector(doc, ids);            //按照類別Id進行過濾 所有的門            FilteredElementCollector filtered2 = collector2.OfCategoryId(new ElementId(BuiltInCategory.OST_Doors));            ShowElements(filtered2, uidoc, "filtered2");            //獲取當前文檔的當前視圖            View view = uidoc.ActiveView;            //■構造函數3，搜集視圖中的元素            FilteredElementCollector collector3 = new FilteredElementCollector(doc, view.Id);            //按照class的Type類型進行過濾            FilteredElementCollector filtered3 = collector3.OfClass(typeof(Wall));            ShowElements(filtered3, uidoc, "filtered3");            FilteredElementCollector collector4 = new FilteredElementCollector(doc);            List filtered4 = collector4.WherePasses(new RoomFilter()).Cast().ToList();            ShowElements(filtered4, uidoc, "filtered4");            //獲取一個包圍盒，并過濾出與該包圍盒相交的元素            var refe = uidoc.Selection.PickObject(ObjectType.Element, new DoorSelectionFilter());            var ele = doc.GetElement(refe);            var box = ele.get_BoundingBox(view);            BoundingBoxIntersectsFilter intersectsFilter = new BoundingBoxIntersectsFilter(new Outline(box.Min, box.Max));            FilteredElementCollector collector5 = new FilteredElementCollector(doc);            var filtered5 = collector5.WherePasses(intersectsFilter).ToElements();            ShowElements(filtered5, uidoc, "filtered5");            return Result.Succeeded;        }        //把輸出元素集合信息封裝成一個函數        void ShowElements(IEnumerable elements, UIDocument uidoc, string title)        {                      StringBuilder sb = new StringBuilder();            sb.AppendLine($"Count={elements.Count()}");            List ids = new List();            elements.ToList().ForEach((e) =>            {                sb.AppendLine($"Id={e.Id},Name={e.Name},Category={e.Category.Name}");                ids.Add(e.Id);            });            //高亮顯示所有過濾的對象            uidoc.Selection.SetElementIds(ids);            //對話框顯示所有過濾對象的信息            TaskDialog.Show(title, sb.ToString());        }    }    class DoorSelectionFilter : ISelectionFilter    {        public bool AllowElement(Element elem)        {            if (elem.Category.Id.IntegerValue==(int)BuiltInCategory.OST_Doors) return true;            return false;        }        public bool AllowReference(Reference reference, XYZ position)        {            return true;        }    }}

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