/// <summary>
/// Retrive family instance hosted in boundary elements
/// This is the base function for Windows and Doors
/// </summary>
/// <param name="cat">The category of hosted elements</param>
/// <returns></returns>
private List <FamilyInstance> BoundaryFamilyInstance(DB.BuiltInCategory cat)
{
List <FamilyInstance> output = new List <FamilyInstance>();
//the document of the room
DB.Document doc = InternalElement.Document; // DocumentManager.Instance.CurrentDBDocument;
//Find boundary elements and their associated document
List <DB.ElementId> boundaryElements = new List <DB.ElementId>();
List <DB.Document> boundaryDocuments = new List <DB.Document>();
foreach (DB.BoundarySegment segment in InternalBoundarySegments)
{
DB.Element boundaryElement = doc.GetElement(segment.ElementId);
if (boundaryElement.GetType() == typeof(DB.RevitLinkInstance))
{
DB.RevitLinkInstance linkInstance = boundaryElement as DB.RevitLinkInstance;
boundaryDocuments.Add(linkInstance.GetLinkDocument());
boundaryElements.Add(segment.LinkElementId);
}
else
{
boundaryDocuments.Add(doc);
boundaryElements.Add(segment.ElementId);
}
}
// Create a category filter
DB.ElementCategoryFilter filter = new DB.ElementCategoryFilter(cat);
// Apply the filter to the elements in these documents,
// Use shortcut WhereElementIsNotElementType() to find family instances in all boundary documents
boundaryDocuments = boundaryDocuments.Distinct().ToList();
List <DB.FamilyInstance> familyInstances = new List <DB.FamilyInstance>();
foreach (DB.Document boundaryDocument in boundaryDocuments)
{
DB.FilteredElementCollector collector = new DB.FilteredElementCollector(boundaryDocument);
familyInstances.AddRange(collector.WherePasses(filter).WhereElementIsNotElementType().ToElements().Cast <DB.FamilyInstance>().ToList());
}
//Find all family instance hosted on a boundary element
IEnumerable <DB.FamilyInstance> boundaryFamilyInstances = familyInstances.Where(s => boundaryElements.Contains(s.Host.Id));
//loop on these boundary family instance to find to and from room
foreach (DB.FamilyInstance boundaryFamilyInstance in boundaryFamilyInstances)
{
DB.Phase familyInstancePhase = boundaryFamilyInstance.Document.GetElement(boundaryFamilyInstance.CreatedPhaseId) as DB.Phase;
if (boundaryFamilyInstance.get_FromRoom(familyInstancePhase) != null)
{
if (boundaryFamilyInstance.get_FromRoom(familyInstancePhase).Id == InternalRoom.Id)
{
output.Add(ElementWrapper.ToDSType(boundaryFamilyInstance, true) as FamilyInstance);
continue;
}
}
if (boundaryFamilyInstance.get_ToRoom(familyInstancePhase) != null)
{
if (boundaryFamilyInstance.get_ToRoom(familyInstancePhase).Id == InternalRoom.Id)
{
output.Add(ElementWrapper.ToDSType(boundaryFamilyInstance, true) as FamilyInstance);
}
}
}
output = output.Distinct().ToList();
return(output);
}
