public static List <LinkElementId> FindExteriorWallsByAnalyzer(Document doc, View3D view, Room room)
{
List <LinkElementId> exteriorElementIds = new List <LinkElementId>();
using (Transaction trans = new Transaction(doc))
{
trans.Start("Analyze Building Envelope");
try
{
BuildingEnvelopeAnalyzerOptions options = new BuildingEnvelopeAnalyzerOptions();
options.AnalyzeEnclosedSpaceVolumes = false;
options.GridCellSize = FindFloorHeight(doc, room, view);
options.OptimizeGridCellSize = false;
BuildingEnvelopeAnalyzer analyzer = BuildingEnvelopeAnalyzer.Create(doc, options);
if (null != analyzer)
{
IList <LinkElementId> linkIds = analyzer.GetBoundingElements();
if (linkIds.Count > 0)
{
exteriorElementIds.AddRange(linkIds);
}
}
trans.Commit();
}
catch (Exception ex)
{
string message = ex.Message;
MessageBox.Show("Bounding elements cannot be defined by Revit API.\nPlease manually set exterior walls and check LEED_IsExteriorWall parameter.", "Building Envelope", MessageBoxButton.OK, MessageBoxImage.Warning);
trans.RollBack();
}
}
return(exteriorElementIds);
}
public List <Wall> GetOutsideWalls()
{
BuildingEnvelopeAnalyzerOptions options = new BuildingEnvelopeAnalyzerOptions();
BuildingEnvelopeAnalyzer analyzer = BuildingEnvelopeAnalyzer.Create(activeDocument, options);
List <LinkElementId> linkIds = analyzer.GetBoundingElements().ToList();
List <Wall> exteriorWalls = new List <Wall>();
if (null != analyzer)
{
if (linkIds.Count > 0)
{
foreach (LinkElementId linkId in linkIds)
{
if (linkId.HostElementId != ElementId.InvalidElementId)
{
Wall hostWall = activeDocument.GetElement(linkId.HostElementId) as Wall;
if (null != hostWall)
{
exteriorWalls.Add(hostWall);
}
}
else if (linkId.LinkedElementId != ElementId.InvalidElementId)
{
RevitLinkInstance rvtInstance = activeDocument.GetElement(linkId.LinkInstanceId) as RevitLinkInstance;
if (null != rvtInstance)
{
Wall linkWall = rvtInstance.Document.GetElement(linkId.LinkedElementId) as Wall;
if (null != linkWall)
{
exteriorWalls.Add(linkWall);
}
}
}
}
}
}
return(exteriorWalls);
}
