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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,180 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Windows; | ||
| using Autodesk.Revit.Attributes; | ||
| using Autodesk.Revit.DB; | ||
| using Autodesk.Revit.UI; | ||
| using Autodesk.Revit.UI.Selection; | ||
|
|
||
| namespace Test; | ||
|
|
||
| [Transaction(TransactionMode.Manual)] | ||
| public class FindIntersectCommand : IExternalCommand | ||
| { | ||
| public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements) | ||
| { | ||
| var uidoc = commandData.Application.ActiveUIDocument; | ||
| var doc = commandData.Application.ActiveUIDocument.Document; | ||
| Reference? refElement = uidoc.Selection.PickObject(ObjectType.Element); | ||
| var element = doc.GetElement(refElement); | ||
| LocationPoint? locationPoint = element.Location as LocationPoint; | ||
| if (locationPoint == null) throw new Exception("element location is null"); | ||
| var category = doc.Settings.Categories.get_Item(BuiltInCategory.OST_Floors); | ||
| var categories = new List<Category>() { category }; | ||
| Element? findNearest2 = FindNearest2(commandData, locationPoint.Point, categories, new XYZ(0, 0, -1), true); | ||
| MessageBox.Show(findNearest2.Id.ToString()); | ||
| // Way 2 | ||
| IList<ReferenceWithContext> referenceWithContext = FindNearest(doc, locationPoint!.Point, categories, | ||
| new XYZ(0, 0, 1), FindReferenceTarget.All, true); | ||
| if (referenceWithContext.Count==0) | ||
| { | ||
| MessageBox.Show("Nothing"); | ||
| } | ||
| else | ||
| { | ||
| StringBuilder sb = new StringBuilder(); | ||
| foreach (ReferenceWithContext context in referenceWithContext) | ||
| { | ||
| sb.AppendLine(context.GetReference().ElementId.ToString()); | ||
| sb.AppendLine(context.GetReference().LinkedElementId.ToString()); | ||
| sb.AppendLine(context.GetReference().GlobalPoint.ToString()); | ||
| } | ||
| MessageBox.Show(sb.ToString()); | ||
| } | ||
|
|
||
| return Result.Succeeded; | ||
| } | ||
|
|
||
| private Element? FindNearest2(ExternalCommandData commandData, XYZ point, | ||
| List<Autodesk.Revit.DB.Category> categories, XYZ direction,bool isIncludeRevitLink) | ||
| { | ||
| var doc = commandData.Application.ActiveUIDocument.Document; | ||
| var categoryFilter = new ElementMulticategoryFilter(categories.Select(x => x.Id).ToList()); | ||
| var collector = new FilteredElementCollector(doc); | ||
| IList<Element> elements = collector.WherePasses(categoryFilter) | ||
| .WhereElementIsNotElementType().ToElements(); | ||
| if (isIncludeRevitLink) | ||
| { | ||
| var revitLinkTypes = new FilteredElementCollector(doc) | ||
| .OfClass(typeof(RevitLinkType)).Cast<RevitLinkType>(); | ||
| foreach (RevitLinkType revitLinkType in revitLinkTypes) | ||
| { | ||
| var linkDoc = commandData.Application.Application.Documents.Cast<Document>() | ||
| .FirstOrDefault(x => x.Title+".rvt" == revitLinkType.Name); | ||
| var collectorLink = new FilteredElementCollector(linkDoc); | ||
| IList<Element> elementIsNotElementType = collectorLink | ||
| .WherePasses(categoryFilter) | ||
| .WhereElementIsNotElementType() | ||
| .ToElements(); | ||
| elements = elements.Concat(elementIsNotElementType).ToList(); | ||
|
|
||
| } | ||
| } | ||
| // check distance between point and element by direction | ||
| Element? nearestElement = null; | ||
| double minDistance = double.MaxValue; | ||
| foreach (Element element in elements) | ||
| { | ||
| BoundingBoxXYZ boundingBoxXyz = element.get_BoundingBox(null); | ||
| if (boundingBoxXyz == null) continue; | ||
| var center = boundingBoxXyz.Max.Add(boundingBoxXyz.Min).Divide(2); | ||
| // check distance by project direction from input | ||
| var plane = Plane.CreateByNormalAndOrigin(direction, point); | ||
| // if direction is opposite with element direction, skip | ||
| if (IsOppositeDirection(direction, center - point)) continue; | ||
| //calc distance from point to plane by math | ||
| double currentDis = CalculateDistanceFromPointToPlane(center, plane); | ||
| if (currentDis < minDistance) | ||
| { | ||
| minDistance = currentDis; | ||
| nearestElement = element; | ||
| } | ||
| } | ||
| return nearestElement; | ||
| } | ||
| bool IsOppositeDirection(XYZ direction, XYZ vector) | ||
| { | ||
| return direction.DotProduct(vector) < 0; | ||
| } | ||
|
|
||
| public double CalculateDistanceFromPointToPlane(XYZ point, Plane plane) | ||
| { | ||
| // Get the normal vector of the plane | ||
| XYZ normal = plane.Normal; | ||
|
|
||
| // Get a point on the plane | ||
| XYZ pointOnPlane = plane.Origin; | ||
|
|
||
| // Calculate the vector from the point on the plane to the given point | ||
| XYZ vectorToPoint = point - pointOnPlane; | ||
|
|
||
| // Use the dot product to find the signed distance | ||
| double signedDistance = normal.DotProduct(vectorToPoint); | ||
|
|
||
| // The absolute value of the signed distance gives the shortest distance | ||
| return Math.Abs(signedDistance); | ||
| } | ||
|
|
||
| private IList<ReferenceWithContext> FindNearest(Autodesk.Revit.DB.Document doc, XYZ point, | ||
| List<Category> categories, XYZ direction, FindReferenceTarget referenceTarget, | ||
| bool findReferencesInRevitLinks) | ||
| { | ||
| // Find a 3D view to use for the Reference Intersection constructor | ||
| FilteredElementCollector collector = new FilteredElementCollector(doc); | ||
| Func<View3D?, bool> isNotTemplate = v3 => !(v3.IsTemplate); | ||
| View3D? view3D = collector.OfClass(typeof(View3D))?.Cast<View3D>()?.First<View3D>(isNotTemplate); | ||
| if (view3D == null) | ||
| { | ||
| throw new ArgumentNullException($"FindNearest require 3D view open"); | ||
| } | ||
|
|
||
| // Use the center of the skylight bounding box as the start point. | ||
| // Project in the negative Z direction down to the ceiling. | ||
| IEnumerable<string> categoriesEnum = categories.Select(x => x.Name); | ||
| ElementFilter? elementFilter = FiltersElementByCategory(doc, categoriesEnum); | ||
| ReferenceIntersector refIntersect = new ReferenceIntersector(elementFilter, referenceTarget, view3D); | ||
| refIntersect.FindReferencesInRevitLinks = findReferencesInRevitLinks; | ||
| IList<ReferenceWithContext> referenceWithContexts = refIntersect.Find(point, direction); | ||
| // ReferenceWithContext referenceWithContext = refIntersect.FindNearest(point, direction); | ||
| return referenceWithContexts; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// </summary> | ||
| /// <param name="doc"></param> | ||
| /// <param name="categoryNames"></param> | ||
| /// <returns></returns> | ||
| private ElementFilter? FiltersElementByCategory(Document doc, IEnumerable<string> categoryNames) | ||
| { | ||
| ElementFilter? categoriesFilter = null; | ||
| if (categoryNames != null && categoryNames.Any()) | ||
| { | ||
| var categoryIds = new List<ElementId>(); | ||
| foreach (var categoryName in categoryNames) | ||
| { | ||
| var category = doc.Settings.Categories.get_Item(categoryName); | ||
| if (category != null) | ||
| { | ||
| categoryIds.Add(category.Id); | ||
| } | ||
| } | ||
|
|
||
| var categoryFilters = new List<ElementFilter>(); | ||
| if (categoryIds.Count > 0) | ||
| { | ||
| var categoryRule = new FilterCategoryRule(categoryIds); | ||
| var categoryFilter = new ElementParameterFilter(categoryRule); | ||
| categoryFilters.Add(categoryFilter); | ||
| } | ||
|
|
||
| if (categoryFilters.Count > 0) | ||
| { | ||
| categoriesFilter = new LogicalOrFilter(categoryFilters); | ||
| } | ||
| } | ||
|
|
||
| return categoriesFilter; | ||
| } | ||
| } |