/// <summary>
/// Remove an element from the GUID to element id map, if its GUID is found in the map.
/// </summary>
/// <param name="elem">The element.</param>
public void UseElement(Element elem)
{
if (elem == null)
return;
string guid = IFCGUIDUtil.GetGUID(elem);
if (string.IsNullOrWhiteSpace(guid))
return;
GUIDToElementMap.Remove(guid);
}
/// <summary>
/// Create the GUIDToElementMap and the GridNameToElementMap to reuse elements by GUID and Grid name.
/// </summary>
/// <param name="document">The document.</param>
public void CreateExistingElementMaps(Document document)
{
FilteredElementCollector collector = new FilteredElementCollector(document);
// These are the only element types currently created in .NET code. This list needs to be updated when a new
// type is created.
List <Type> supportedElementTypes = new List <Type>();
supportedElementTypes.Add(typeof(DirectShape));
supportedElementTypes.Add(typeof(DirectShapeType));
supportedElementTypes.Add(typeof(Level));
supportedElementTypes.Add(typeof(Grid));
ElementMulticlassFilter multiclassFilter = new ElementMulticlassFilter(supportedElementTypes);
collector.WherePasses(multiclassFilter);
foreach (Element elem in collector)
{
string guid = IFCGUIDUtil.GetGUID(elem);
if (string.IsNullOrWhiteSpace(guid))
{
continue; // This Element was generated by other means.
}
if (elem is Grid)
{
string gridName = elem.Name;
if (GridNameToElementMap.ContainsKey(gridName))
{
// If the Grid has a duplicate grid name, assign an arbitrary one to add to the map. This will mean
// that the Grid will be deleted at the end of reloading.
// TODO: warn the user about this, and/or maybe allow for some duplication based on category.
gridName = Guid.NewGuid().ToString();
}
GridNameToElementMap.Add(new KeyValuePair <string, ElementId>(gridName, elem.Id));
}
else
{
if (GUIDToElementMap.ContainsKey(guid))
{
// If the Element contains a duplicate GUID, assign an arbitrary one to add to the map. This will mean
// that the Element will be deleted at the end of reloading.
// TODO: warn the user about this, and/or maybe allow for some duplication based on category.
guid = Guid.NewGuid().ToString();
}
GUIDToElementMap.Add(new KeyValuePair <string, ElementId>(guid, elem.Id));
}
}
}