Transform.CreateTranslation(_offset); // 2014 #endif // CREATE_MODEL_CURVES_FOR_TOP_FACE_EDGES public Result Execute( ExternalCommandData commandData, ref string message, ElementSet elements) { UIApplication uiapp = commandData.Application; UIDocument uidoc = uiapp.ActiveUIDocument; Application app = uiapp.Application; Document doc = uidoc.Document; Options opt = app.Create.NewGeometryOptions(); XyzEqualityComparer comparer = new XyzEqualityComparer(1e-6); #if CREATE_MODEL_CURVES_FOR_TOP_FACE_EDGES Creator creator = new Creator(doc); Transaction t = new Transaction(doc); t.Start("Create model curve copies of top face edges"); #endif // CREATE_MODEL_CURVES_FOR_TOP_FACE_EDGES IList <Face> topFaces = new List <Face>(); int n; int nWalls = 0; //foreach( Element e in uidoc.Selection.Elements ) // 2014 foreach (ElementId id in uidoc.Selection.GetElementIds()) // 2015 { Element e = doc.GetElement(id); Wall wall = e as Wall; if (null == wall) { Debug.Print("Skipped " + Util.ElementDescription(e)); continue; } // Get the side faces IList <Reference> sideFaces = HostObjectUtils.GetSideFaces(wall, ShellLayerType.Exterior); // Access the first side face Element e2 = doc.GetElement(sideFaces[0]); Debug.Assert(e2.Id.Equals(e.Id), "expected side face element to be the wall itself"); Face face = e2.GetGeometryObjectFromReference( sideFaces[0]) as Face; if (null == face) { Debug.Print("No side face found for " + Util.ElementDescription(e)); continue; } // When there are opening such as doors or // windows in the wall, we need to find the // outer loop. // For one possible approach to extract the // outermost loop, please refer to // http://thebuildingcoder.typepad.com/blog/2008/12/2d-polygon-areas-and-outer-loop.html // Determine the outer loop of the side face // by finding the polygon with the largest area XYZ normal; double area, dist, maxArea = 0; EdgeArray outerLoop = null; foreach (EdgeArray ea in face.EdgeLoops) { if (CmdWallProfileArea.GetPolygonPlane( ea.GetPolygon(), out normal, out dist, out area) && Math.Abs(area) > Math.Abs(maxArea)) { maxArea = area; outerLoop = ea; } } n = 0; #if GET_FACES_FROM_OUTER_LOOP // With the outermost loop, calculate the top faces foreach (Edge edge in outerLoop) { // For each edge, get the neighbouring // face and check its normal for (int i = 0; i < 2; ++i) { PlanarFace pf = edge.get_Face(i) as PlanarFace; if (null == pf) { Debug.Print("Skipped non-planar face on " + Util.ElementDescription(e)); continue; } if (Util.PointsUpwards(pf.Normal, 0.9)) { if (topFaces.Contains(pf)) { Debug.Print("Duplicate face on " + Util.ElementDescription(e)); } else { topFaces.Add(pf); ++n; } } } } #endif // GET_FACES_FROM_OUTER_LOOP List <XYZ> sideVertices = outerLoop.GetPolygon(); // Go over all the faces of the wall and // determine which ones fulfill the following // two criteria: (i) planar face pointing // upwards, and (ii) neighbour of the side // face outer loop. Solid solid = wall.get_Geometry(opt) .OfType <Solid>() .First <Solid>(sol => null != sol); foreach (Face f in solid.Faces) { if (IsTopFace(f)) { IList <XYZ> faceVertices = f.Triangulate().Vertices; //if( sideVertices.Exists( v // => faceVertices.Contains<XYZ>( v, comparer ) ) ) //{ // topFaces.Add( f ); // ++n; //} foreach (XYZ v in faceVertices) { if (sideVertices.Contains <XYZ>( v, comparer)) { topFaces.Add(f); ++n; #if CREATE_MODEL_CURVES_FOR_TOP_FACE_EDGES // Display face for debugging purposes foreach (EdgeArray ea in f.EdgeLoops) { IEnumerable <Curve> curves = ea.Cast <Edge>() .Select <Edge, Curve>( x => x.AsCurve()); foreach (Curve curve in curves) { //creator.CreateModelCurve( curve.get_Transformed( _t ) ); // 2013 creator.CreateModelCurve(curve.CreateTransformed(_t)); // 2014 } } #endif // CREATE_MODEL_CURVES_FOR_TOP_FACE_EDGES break; } } } } Debug.Print(string.Format( "{0} top face{1} found on {2} ({3})", n, Util.PluralSuffix(n), Util.ElementDescription(e)), nWalls++); } #if CREATE_MODEL_CURVES_FOR_TOP_FACE_EDGES t.Commit(); #endif // CREATE_MODEL_CURVES_FOR_TOP_FACE_EDGES string s = string.Format( "{0} wall{1} successfully processed", nWalls, Util.PluralSuffix(nWalls)); n = topFaces.Count; TaskDialog.Show("Wall Top Faces", string.Format( "{0} with {1} top face{2}.", s, n, Util.PluralSuffix(n))); return(Result.Succeeded); }