public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
var doc = commandData.Application.ActiveUIDocument.Document;
var sel = commandData.Application.ActiveUIDocument.Selection;
var e = sel.PickObjects(Autodesk.Revit.UI.Selection.ObjectType.Element, new SelectionFilter(x => x is FamilyInstance));
var tasks = e.Select(x => doc.GetElement(x) as FamilyInstance);
//var solids = tasks.Select(x => x.get_Geometry(new Options()).First() as Solid);
var solids = tasks.Select(x => x.GetGeometry().First(y => y.Volume > 0));
var orientaion = solids.First().Faces.Cast <Face>().Select(x => x.ComputeNormal(UV.Zero)).First(x => x.X > 0 && x.Y > 0);
var angle = XYZ.BasisX.AngleTo(orientaion);
var t = Transform.CreateRotation(XYZ.BasisZ, -angle);
var backT = Transform.CreateRotation(XYZ.BasisZ, angle);
var tPoints = solids.SelectMany(x => x.Edges.Cast <Edge>().Select(y => y.AsCurve().GetEndPoint(0)).Select(y => t.OfPoint(y)));
var pointsSolids = tPoints.Select(x => SolidExtensions.GetBoxAroundPoint(x).SolidBoundingBox());
var min = Min(tPoints);
var max = Max(tPoints);
var bbox = new BoundingBoxXYZ
{
Min = min,
Max = max
};
//bbox.Transform = backT;
var solid = bbox.SolidBoundingBox();
var backSolid = SolidUtils.CreateTransformed(solid, backT);
using (var tr = new Transaction(doc, "test"))
{
tr.Start();
var ds = DirectShape.CreateElement(doc, new ElementId(BuiltInCategory.OST_Floors));
ds.SetShape(new[] { backSolid });
tr.Commit();
System.Windows.Clipboard.SetText(ds.Id.ToString());
}
//var view3D = View3D.CreateIsometric(doc, new ElementId(69339));
//var viewBB = backSolid.GetBoundingBox();
//XYZ xYZ = new XYZ(1, 1, 1);
//viewBB.Min -= xYZ;
//viewBB.Max += xYZ;
//view3D.SetSectionBox(viewBB);
return(Result.Succeeded);
}