BuildingCoder.CmdNewExtrusionRoof.f C# (CSharp) Метод

        void f( Document doc )
        {
            // Before invoking this sample, select some walls
              // to add a roof over. Make sure there is a level
              // named "Roof" in the document.

              Level level
            = new FilteredElementCollector( doc )
              .OfClass( typeof( Level ) )
              .Where<Element>( e =>
            !string.IsNullOrEmpty( e.Name )
            && e.Name.Equals( "Roof" ) )
              .FirstOrDefault<Element>() as Level;

              RoofType roofType
            = new FilteredElementCollector( doc )
              .OfClass( typeof( RoofType ) )
              .FirstOrDefault<Element>() as RoofType;

              // Get the handle of the application
              Application application = doc.Application;

              // Define the footprint for the roof based on user selection
              CurveArray footprint = application.Create
            .NewCurveArray();

              UIDocument uidoc = new UIDocument( doc );

              ICollection<ElementId> selectedIds
            = uidoc.Selection.GetElementIds();

              if( selectedIds.Count != 0 )
              {
            foreach( ElementId id in selectedIds )
            {
              Element element = doc.GetElement( id );
              Wall wall = element as Wall;
              if( wall != null )
              {
            LocationCurve wallCurve = wall.Location as LocationCurve;
            footprint.Append( wallCurve.Curve );
            continue;
              }

              ModelCurve modelCurve = element as ModelCurve;
              if( modelCurve != null )
              {
            footprint.Append( modelCurve.GeometryCurve );
              }
            }
              }
              else
              {
            throw new Exception(
              "Please select a curve loop, wall loop or "
              + "combination of walls and curves to "
              + "create a footprint roof." );
              }

              ModelCurveArray footPrintToModelCurveMapping
            = new ModelCurveArray();

              FootPrintRoof footprintRoof
            = doc.Create.NewFootPrintRoof(
              footprint, level, roofType,
              out footPrintToModelCurveMapping );

              ModelCurveArrayIterator iterator
            = footPrintToModelCurveMapping.ForwardIterator();

              iterator.Reset();
              while( iterator.MoveNext() )
              {
            ModelCurve modelCurve = iterator.Current as ModelCurve;
            footprintRoof.set_DefinesSlope( modelCurve, true );
            footprintRoof.set_SlopeAngle( modelCurve, 0.5 );
              }
        }