├── .gitattributes ├── .gitignore ├── FindExteriorWalls.sln ├── FindExteriorWalls ├── Extensions.cs ├── FindExteriorWalls.csproj ├── FindExteriorWallsCommand.cs ├── Properties │ └── AssemblyInfo.cs └── WallsSelectionFilter.cs └── README.md /.gitattributes: -------------------------------------------------------------------------------- 1 | ############################################################################### 2 | # Set default behavior to automatically normalize line endings. 3 | ############################################################################### 4 | * text=auto 5 | 6 | ############################################################################### 7 | # Set default behavior for command prompt diff. 8 | # 9 | # This is need for earlier builds of msysgit that does not have it on by 10 | # default for csharp files. 11 | # Note: This is only used by command line 12 | ############################################################################### 13 | #*.cs diff=csharp 14 | 15 | ############################################################################### 16 | # Set the merge driver for project and solution files 17 | # 18 | # Merging from the command prompt will add diff markers to the files if there 19 | # are conflicts (Merging from VS is not affected by the settings below, in VS 20 | # the diff markers are never inserted). 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2 | using System.Linq; 3 | using Autodesk.Revit.DB; 4 | 5 | namespace FindExteriorWalls 6 | { 7 | public static class Extensions 8 | { 9 | public static Line GetPerpendicularLine(this Curve curve, Wall wall, int leftRight) 10 | { 11 | XYZ orientation = wall.Orientation; 12 | if (curve is Arc arc) 13 | orientation = ((arc.GetEndPoint(0) + arc.GetEndPoint(1)) / 2 - arc.GetCenterPoint()).Normalize(); 14 | return Line.CreateBound(curve.GetCenterPoint(), 15 | leftRight == 0 16 | ? curve.GetCenterPoint() - orientation * 1000 17 | : curve.GetCenterPoint() + orientation * 1000); 18 | } 19 | 20 | public static XYZ GetCenterPoint(this Curve curve) 21 | { 22 | if (curve is Arc arc) 23 | { 24 | return arc.Evaluate(0.5, true); 25 | } 26 | 27 | return (curve.GetEndPoint(0) + curve.GetEndPoint(1)) / 2; 28 | } 29 | 30 | /// Check intersection with curve by moving z 31 | /// Current line 32 | /// Checked curve 33 | public static bool IntersectToByMovingZ(this Line line, Curve checkedCurve) 34 | { 35 | // walls is always vertical - it's very good =) 36 | var z = line.GetCenterPoint().Z; 37 | checkedCurve = GetCurveWithChangedZ(checkedCurve, z); 38 | if (checkedCurve == null) return false; // can't be... 39 | return line.Intersect(checkedCurve) == SetComparisonResult.Overlap; 40 | } 41 | 42 | public static bool IntersectToByMovingZ(this Curve curve, Curve checkedCurve, out IntersectionResultArray intersectionResultArray) 43 | { 44 | intersectionResultArray = new IntersectionResultArray(); 45 | // walls is always vertical - it's very good =) 46 | var z = curve.GetCenterPoint().Z; 47 | checkedCurve = GetCurveWithChangedZ(checkedCurve, z); 48 | if (checkedCurve == null) return false; // can't be... 49 | return curve.Intersect(checkedCurve, out intersectionResultArray) == SetComparisonResult.Overlap; 50 | } 51 | 52 | private static Curve GetCurveWithChangedZ(Curve curve, double z) 53 | { 54 | if (curve is Line line) 55 | return Line.CreateBound( 56 | new XYZ(line.GetEndPoint(0).X, line.GetEndPoint(0).Y, z), 57 | new XYZ(line.GetEndPoint(1).X, line.GetEndPoint(1).Y, z)); 58 | if (curve is Arc arc) 59 | return Arc.Create( 60 | new XYZ(arc.GetEndPoint(0).X, arc.GetEndPoint(0).Y, z), 61 | new XYZ(arc.GetEndPoint(1).X, arc.GetEndPoint(1).Y, z), 62 | new XYZ(arc.GetCenterPoint().X, arc.GetCenterPoint().Y, z)); 63 | return null; 64 | } 65 | 66 | public static bool HasWallById(this List listOfWalls, Wall checkedWall) 67 | { 68 | return listOfWalls.Select(w => w.Id.IntegerValue).Contains(checkedWall.Id.IntegerValue); 69 | } 70 | } 71 | } 72 | -------------------------------------------------------------------------------- /FindExteriorWalls/FindExteriorWalls.csproj: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | Debug 6 | AnyCPU 7 | {4DACC31D-4A2D-428C-A8E2-44CC5F7DC02E} 8 | Library 9 | Properties 10 | FindExteriorWalls 11 | FindExteriorWalls 12 | v4.7.1 13 | 512 14 | 15 | 16 | 17 | true 18 | full 19 | false 20 | bin\Debug\ 21 | DEBUG;TRACE 22 | prompt 23 | 4 24 | 25 | 26 | pdbonly 27 | true 28 | bin\Release\ 29 | TRACE 30 | prompt 31 | 4 32 | 33 | 34 | 35 | C:\_Revit dlls\2019\RevitAPI.dll 36 | False 37 | 38 | 39 | C:\_Revit dlls\2019\RevitAPIUI.dll 40 | False 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | -------------------------------------------------------------------------------- /FindExteriorWalls/FindExteriorWallsCommand.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Collections.Generic; 3 | using System.Linq; 4 | using Autodesk.Revit.Attributes; 5 | using Autodesk.Revit.DB; 6 | using Autodesk.Revit.UI; 7 | 8 | namespace FindExteriorWalls 9 | { 10 | [Transaction(TransactionMode.Manual)] 11 | [Regeneration(RegenerationOption.Manual)] 12 | public class FindExteriorWallsCommand : IExternalCommand 13 | { 14 | public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements) 15 | { 16 | var doc = commandData.Application.ActiveUIDocument.Document; 17 | var selection = commandData.Application.ActiveUIDocument.Selection; 18 | try 19 | { 20 | // check view 21 | if (doc.ActiveView.ViewType != ViewType.FloorPlan) 22 | { 23 | TaskDialog.Show("Wrong view", "Must be floor plan"); 24 | return Result.Cancelled; 25 | } 26 | // select walls 27 | List selectedWalls; 28 | try 29 | { 30 | selectedWalls = selection.PickElementsByRectangle(new WallsSelectionFilter(), "Select walls").Cast().ToList(); 31 | } 32 | catch (Autodesk.Revit.Exceptions.OperationCanceledException) 33 | { 34 | return Result.Cancelled; 35 | } 36 | 37 | if (!selectedWalls.Any()) return Result.Cancelled; 38 | 39 | // result list 40 | List exteriorWalls = new List(); 41 | 42 | // step one - find by ray 43 | for (var i = 0; i < selectedWalls.Count; i++) 44 | { 45 | if (selectedWalls[i] == null) continue; 46 | var wall = selectedWalls[i]; 47 | var wallCurve = ((LocationCurve)wall.Location).Curve; 48 | bool isExterior = true; 49 | // split wall curve for 3 part for greater accuracy 50 | for (int k = 1; k <= 3; k++) 51 | { 52 | Curve tempCurve = Line.CreateBound(wallCurve.GetEndPoint(0), wallCurve.GetCenterPoint()); 53 | if (k == 2) 54 | tempCurve = wallCurve; 55 | if(k == 3) 56 | tempCurve = Line.CreateBound(wallCurve.GetCenterPoint(), wallCurve.GetEndPoint(1)); 57 | int intesectionsOnLeft = 0; 58 | int intersectionOnRight = 0; 59 | Line leftLine = tempCurve.GetPerpendicularLine(wall, 0); 60 | Line rightLine = tempCurve.GetPerpendicularLine(wall, 1); 61 | for (var j = 0; j < selectedWalls.Count; j++) 62 | { 63 | if (selectedWalls[j] == null || i == j) continue; 64 | var checkedWall = selectedWalls[j]; 65 | var checkedWallCurve = ((LocationCurve) checkedWall.Location).Curve; 66 | // pass the co-directional straight walls 67 | if (wallCurve is Line line1 && checkedWallCurve is Line line2 && 68 | Math.Abs(Math.Abs(line1.Direction.DotProduct(line2.Direction))) < 0.0001) 69 | continue; 70 | if (leftLine.IntersectToByMovingZ(checkedWallCurve)) 71 | intesectionsOnLeft++; 72 | if (rightLine.IntersectToByMovingZ(checkedWallCurve)) 73 | intersectionOnRight++; 74 | } 75 | 76 | if (!(intesectionsOnLeft == 0 & intersectionOnRight != 0) && !(intersectionOnRight == 0 & intesectionsOnLeft != 0)) 77 | { 78 | isExterior = false; 79 | break; 80 | } 81 | } 82 | 83 | if (isExterior) 84 | if (!exteriorWalls.Contains(wall)) 85 | exteriorWalls.Add(wall); 86 | } 87 | // step two - find by end intersections 88 | bool hasIntersections = true; 89 | int overflow = 0; 90 | while (hasIntersections) 91 | { 92 | hasIntersections = false; 93 | foreach (var selectedWall in selectedWalls) 94 | { 95 | if (exteriorWalls.Contains(selectedWall)) continue; 96 | var intersectedByEndsWalls = GetIntersectedByEndsWalls(selectedWalls, exteriorWalls, selectedWall); 97 | var allInExterior = true; 98 | foreach (var wall in intersectedByEndsWalls) 99 | { 100 | if (!exteriorWalls.HasWallById(wall)) 101 | { 102 | allInExterior = false; 103 | break; 104 | } 105 | } 106 | 107 | if (allInExterior) 108 | { 109 | exteriorWalls.Add(selectedWall); 110 | hasIntersections = true; 111 | } 112 | } 113 | 114 | overflow++; 115 | if (overflow == 1000) 116 | { 117 | TaskDialog.Show("Error", "Overflow error"); 118 | break; 119 | } 120 | } 121 | 122 | // show exterior walls 123 | selection.SetElementIds(exteriorWalls.Select(w => w.Id).ToList()); 124 | 125 | return Result.Succeeded; 126 | } 127 | catch (Exception exception) 128 | { 129 | message += exception.Message; 130 | return Result.Failed; 131 | } 132 | } 133 | 134 | private List GetIntersectedByEndsWalls(List selectedWalls, List exteriorWalls, Wall currentWall) 135 | { 136 | List intersectedWalls = new List(); 137 | // find by location curve 138 | var intersectedWithFirstEnd = GetWallsIntersectedWithCurveByEnd(exteriorWalls, currentWall, 0); 139 | var intersectedWithSecondEnd = GetWallsIntersectedWithCurveByEnd(exteriorWalls, currentWall, 1); 140 | // find by ends 141 | var locCurve = (LocationCurve)currentWall.Location; 142 | var elementsAtEnd = locCurve.get_ElementsAtJoin(0); 143 | foreach (Element e in elementsAtEnd) 144 | { 145 | // Если всего одно пересечение и это сама стена - значит это торец 146 | if (e.Id.IntegerValue == currentWall.Id.IntegerValue) continue; 147 | if (selectedWalls.HasWallById((Wall)e)) 148 | { 149 | intersectedWalls.Add((Wall)e); 150 | // если есть в списке пересекаемых по направляющей, то удалим из списка 151 | if (intersectedWithFirstEnd.Any(w => w.Id.IntegerValue == e.Id.IntegerValue)) 152 | intersectedWithFirstEnd.Remove( 153 | intersectedWithFirstEnd.First(w => w.Id.IntegerValue == e.Id.IntegerValue)); 154 | } 155 | } 156 | elementsAtEnd = locCurve.get_ElementsAtJoin(1); 157 | foreach (Element e in elementsAtEnd) 158 | { 159 | // Если всего одно пересечение и это сама стена - значит это торец 160 | if (e.Id.IntegerValue == currentWall.Id.IntegerValue) continue; 161 | if (selectedWalls.HasWallById((Wall)e)) 162 | { 163 | intersectedWalls.Add((Wall)e); 164 | // если есть в списке пересекаемых по направляющей, то удалим из списка 165 | if (intersectedWithSecondEnd.Any(w => w.Id.IntegerValue == e.Id.IntegerValue)) 166 | intersectedWithSecondEnd.Remove( 167 | intersectedWithSecondEnd.First(w => w.Id.IntegerValue == e.Id.IntegerValue)); 168 | } 169 | } 170 | 171 | foreach (Wall e in intersectedWithFirstEnd) 172 | intersectedWalls.Add(e); 173 | foreach (Wall e in intersectedWithSecondEnd) 174 | intersectedWalls.Add(e); 175 | 176 | return intersectedWalls; 177 | } 178 | 179 | private static List GetWallsIntersectedWithCurveByEnd(List exteriorWalls, Wall currentWall, int endIndex) 180 | { 181 | List intersectedWalls = new List(); 182 | var currentCurve = ((LocationCurve)currentWall.Location).Curve; 183 | foreach (var exteriorWall in exteriorWalls) 184 | { 185 | var exteriorWallCurve = ((LocationCurve)exteriorWall.Location).Curve; 186 | if (exteriorWall.Id.IntegerValue == currentWall.Id.IntegerValue) continue; 187 | // pass the co-directional straight walls 188 | if (currentCurve is Line line1 && exteriorWallCurve is Line line2 && 189 | Math.Abs(Math.Abs(line1.Direction.DotProduct(line2.Direction))) < 0.0001) 190 | continue; 191 | if (currentCurve.IntersectToByMovingZ(exteriorWallCurve, out var intersectionResultArray) && 192 | intersectionResultArray.Size == 1) 193 | { 194 | if (Math.Abs(intersectionResultArray.get_Item(0).XYZPoint.DistanceTo(currentCurve.GetEndPoint(endIndex))) < 0.0001) 195 | intersectedWalls.Add(exteriorWall); 196 | } 197 | } 198 | return intersectedWalls; 199 | } 200 | } 201 | } 202 | -------------------------------------------------------------------------------- /FindExteriorWalls/Properties/AssemblyInfo.cs: -------------------------------------------------------------------------------- 1 | using System.Reflection; 2 | using System.Runtime.CompilerServices; 3 | using System.Runtime.InteropServices; 4 | 5 | // Общие сведения об этой сборке предоставляются следующим набором 6 | // набора атрибутов. Измените значения этих атрибутов, чтобы изменить сведения, 7 | // связанные со сборкой. 8 | [assembly: AssemblyTitle("FindExteriorWalls")] 9 | [assembly: AssemblyDescription("")] 10 | [assembly: AssemblyConfiguration("")] 11 | [assembly: AssemblyCompany("")] 12 | [assembly: AssemblyProduct("FindExteriorWalls")] 13 | [assembly: AssemblyCopyright("Copyright © 2018")] 14 | [assembly: AssemblyTrademark("")] 15 | [assembly: AssemblyCulture("")] 16 | 17 | // Установка значения False для параметра ComVisible делает типы в этой сборке невидимыми 18 | // для компонентов COM. Если необходимо обратиться к типу в этой сборке через 19 | // COM, задайте атрибуту ComVisible значение TRUE для этого типа. 20 | [assembly: ComVisible(false)] 21 | 22 | // Следующий GUID служит для идентификации библиотеки типов, если этот проект будет видимым для COM 23 | [assembly: Guid("4dacc31d-4a2d-428c-a8e2-44cc5f7dc02e")] 24 | 25 | // Сведения о версии сборки состоят из следующих четырех значений: 26 | // 27 | // Основной номер версии 28 | // Дополнительный номер версии 29 | // Номер сборки 30 | // Редакция 31 | // 32 | // Можно задать все значения или принять номер сборки и номер редакции по умолчанию. 33 | // используя "*", как показано ниже: 34 | // [assembly: AssemblyVersion("1.0.*")] 35 | [assembly: AssemblyVersion("1.0.0.0")] 36 | [assembly: AssemblyFileVersion("1.0.0.0")] 37 | -------------------------------------------------------------------------------- /FindExteriorWalls/WallsSelectionFilter.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using Autodesk.Revit.DB; 3 | using Autodesk.Revit.UI.Selection; 4 | 5 | namespace FindExteriorWalls 6 | { 7 | public class WallsSelectionFilter : ISelectionFilter 8 | { 9 | public bool AllowElement(Element elem) 10 | { 11 | return elem is Wall; 12 | } 13 | 14 | public bool AllowReference(Reference reference, XYZ position) 15 | { 16 | throw new NotImplementedException(); 17 | } 18 | } 19 | } 20 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # RevitFindExteriorWalls 2 | Вариант аналитического алгоритма поиска наружных стен 3 | Подробности в блоге - http://blog.modplus.org/index.php/11-revitapi/10-revit-find-external-walls-algorithm 4 | --------------------------------------------------------------------------------