revit api创建墙体剖面视图

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using System;
using System.Linq;namespace WallSectionCreator
{[Transaction(TransactionMode.Manual)]public class CreateWallSectionCommand : IExternalCommand{private Document _doc;public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements){UIApplication uiApp = commandData.Application;UIDocument uiDoc = uiApp.ActiveUIDocument;_doc = uiDoc.Document;try{// 让用户选择一个墙体Reference reference = uiDoc.Selection.PickObject(ObjectType.Element,new WallSelectionFilter(), "请选择一个墙体");Wall selectedWall = _doc.GetElement(reference) as Wall;if (selectedWall == null){TaskDialog.Show("错误", "请选择一个有效的墙体");return Result.Cancelled;}// 获取剖面视图类型ViewFamilyType viewFamilyType = GetSectionViewFamilyType();if (viewFamilyType == null){TaskDialog.Show("错误", "找不到可用的剖面视图类型");return Result.Failed;}// 计算剖面创建所需的参数LocationCurve wallLocation = selectedWall.Location as LocationCurve;if (wallLocation == null){TaskDialog.Show("错误", "选择的墙体没有有效的位置曲线");return Result.Failed;}Line wallLine = wallLocation.Curve as Line;if (wallLine == null){TaskDialog.Show("错误", "选择的墙体不是直线墙体");return Result.Failed;}// 计算墙体中点作为剖面中心位置XYZ centerLoc = wallLine.Evaluate(0.5, true);// 剖面方向沿墙体长度方向XYZ direction = wallLine.Direction;// 创建墙剖面Element sectionView = CreateWallSection(selectedWall, viewFamilyType, centerLoc, direction);if (sectionView != null){TaskDialog.Show("成功", $"已为墙体 {selectedWall.Id.IntegerValue} 创建剖面视图");uiDoc.ActiveView = sectionView as View;return Result.Succeeded;}else{TaskDialog.Show("失败", "创建剖面视图时发生错误");return Result.Failed;}}catch (OperationCanceledException){// 用户取消了选择return Result.Cancelled;}catch (Exception ex){message = ex.Message;return Result.Failed;}}/// <summary>/// 创建墙剖面图/// </summary>private Element CreateWallSection(Wall wall, ViewFamilyType viewFamilyType, XYZ centerloc, XYZ direction, double depth = 5){try{if (wall == null) return null;Line line = (wall.Location as LocationCurve).Curve as Line;double length = line.Length / 2 + 0.5;BoundingBoxXYZ box = wall.get_BoundingBox(null);XYZ min = new XYZ(-length, box.Min.Z, 0);XYZ max = new XYZ(length, box.Max.Z, depth);XYZ center = new XYZ(centerloc.X, centerloc.Y, (box.Min.Z + box.Max.Z) / 2);Transform transform = Transform.Identity;transform.Origin = center;transform.BasisX = -direction.CrossProduct(XYZ.BasisZ).Normalize();transform.BasisY = XYZ.BasisZ;transform.BasisZ = direction;var newbox = new BoundingBoxXYZ(){Min = min,Max = max,Transform = transform};ViewSection viewSection = null;// 执行事务创建剖面using (Transaction trans = new Transaction(_doc, "创建墙剖面")){trans.Start();viewSection = ViewSection.CreateSection(_doc, viewFamilyType.Id, newbox);if (viewSection != null){viewSection.Name = "pmm1";viewSection.CropBoxActive = true;viewSection.DisplayStyle = DisplayStyle.ShadingWithEdges;viewSection.DetailLevel = ViewDetailLevel.Fine;viewSection.IsolateElementTemporary(wall.Id);}trans.Commit();}return viewSection;}catch{return null;}}/// <summary>/// 获取剖面视图类型/// </summary>private ViewFamilyType GetSectionViewFamilyType(){return new FilteredElementCollector(_doc).OfClass(typeof(ViewFamilyType)).Cast<ViewFamilyType>().FirstOrDefault(vft => vft.ViewFamily == ViewFamily.Section);}/// <summary>/// 墙体选择过滤器/// </summary>private class WallSelectionFilter : ISelectionFilter{public bool AllowElement(Element elem){return elem is Wall;}public bool AllowReference(Reference reference, XYZ position){return true;}}}
}