/// <summary>
/// Export the parts as independent building elements.
/// </summary>
/// <remarks>
/// The function works with AlternateIFCUI and it requires two conditions:
/// 1. Allows export parts: 'current view only' is checked and 'show parts' is selected.
/// 2. Allows export parts independent: 'Export parts as building elements' is checked in alternate UI dialog.
/// </remarks>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="partElement">The standalone part to export.</param>
/// <param name="geometryElement">The goemetry of the part.</param>
/// <param name="productWrapper">The ProductWrapper object.</param>
public static void ExportPartAsBuildingElement(ExporterIFC exporterIFC, Element partElement, GeometryElement geometryElement, ProductWrapper productWrapper)
{
Part part = partElement as Part;
if (!ExporterCacheManager.ExportOptionsCache.ExportParts || part == null || geometryElement == null)
{
return;
}
bool isWall = part.OriginalCategoryId == new ElementId(BuiltInCategory.OST_Walls);
bool isColumn = part.OriginalCategoryId == new ElementId(BuiltInCategory.OST_Columns);
bool isWallOrColumn = isWall || isColumn;
IFCExtrusionAxes ifcExtrusionAxes = GetDefaultExtrusionAxesForPart(part);
Element hostElement = null;
ElementId overrideLevelId = null;
// Find the host element of the part.
hostElement = FindRootParent(part, part.OriginalCategoryId);
// If part's level is not associated, try to get the host's level with the same category.
if (hostElement != null)
{
overrideLevelId = hostElement.LevelId;
}
// Split parts with original category is wall or column and the option wall or column is split by level is checked, and then export;
// otherwise, export separate parts normally.
if (isWallOrColumn && ExporterCacheManager.ExportOptionsCache.WallAndColumnSplitting)
{
IList <ElementId> levels = new List <ElementId>();
IList <IFCRange> ranges = new List <IFCRange>();
IFCExportType exportType = isWall ? IFCExportType.IfcWall : IFCExportType.IfcColumnType;
LevelUtil.CreateSplitLevelRangesForElement(exporterIFC, exportType, part, out levels, out ranges);
if (ranges.Count == 0)
{
PartExporter.ExportPart(exporterIFC, partElement, productWrapper, null, null, null, ifcExtrusionAxes, hostElement, overrideLevelId, true);
}
else
{
for (int ii = 0; ii < ranges.Count; ii++)
{
PartExporter.ExportPart(exporterIFC, partElement, productWrapper, null, null, ranges[ii], ifcExtrusionAxes, hostElement, levels[ii], true);
}
}
}
else
{
PartExporter.ExportPart(exporterIFC, partElement, productWrapper, null, null, null, ifcExtrusionAxes, hostElement, overrideLevelId, true);
}
}
/// <summary>
/// Export all the parts of the host element.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="hostElement">The host element having parts to export.</param>
/// <param name="hostHandle">The host element handle.</param>
/// <param name="originalWrapper">The ProductWrapper object.</param>
public static void ExportHostPart(ExporterIFC exporterIFC, Element hostElement, IFCAnyHandle hostHandle,
ProductWrapper originalWrapper, PlacementSetter placementSetter, IFCAnyHandle originalPlacement, ElementId overrideLevelId)
{
using (ProductWrapper subWrapper = ProductWrapper.Create(exporterIFC, true))
{
List <ElementId> associatedPartsList = PartUtils.GetAssociatedParts(hostElement.Document, hostElement.Id, false, true).ToList();
if (associatedPartsList.Count == 0)
{
return;
}
bool isWallOrColumn = IsHostWallOrColumn(exporterIFC, hostElement);
bool hasOverrideLevel = overrideLevelId != null && overrideLevelId != ElementId.InvalidElementId;
IFCExtrusionAxes ifcExtrusionAxes = GetDefaultExtrusionAxesForHost(exporterIFC, hostElement);
// Split parts if wall or column is split by level, and then export; otherwise, export parts normally.
if (isWallOrColumn && hasOverrideLevel && ExporterCacheManager.ExportOptionsCache.WallAndColumnSplitting)
{
if (!ExporterCacheManager.HostPartsCache.HasRegistered(hostElement.Id))
{
SplitParts(exporterIFC, hostElement, associatedPartsList); // Split parts and associate them with host.
}
// Find and export the parts that are split by specific level.
List <KeyValuePair <Part, IFCRange> > splitPartRangeList = new List <KeyValuePair <Part, IFCRange> >();
splitPartRangeList = ExporterCacheManager.HostPartsCache.Find(hostElement.Id, overrideLevelId);
foreach (KeyValuePair <Part, IFCRange> partRange in splitPartRangeList)
{
PartExporter.ExportPart(exporterIFC, partRange.Key, subWrapper, placementSetter, originalPlacement, partRange.Value, ifcExtrusionAxes, hostElement, overrideLevelId, false);
}
}
else
{
foreach (ElementId partId in associatedPartsList)
{
Part part = hostElement.Document.GetElement(partId) as Part;
PartExporter.ExportPart(exporterIFC, part, subWrapper, placementSetter, originalPlacement, null, ifcExtrusionAxes, hostElement, overrideLevelId, false);
}
}
// Create the relationship of Host and Parts.
ICollection <IFCAnyHandle> relatedElementIds = subWrapper.GetAllObjects();
if (relatedElementIds.Count > 0)
{
string guid = GUIDUtil.CreateGUID();
HashSet <IFCAnyHandle> relatedElementIdSet = new HashSet <IFCAnyHandle>(relatedElementIds);
IFCInstanceExporter.CreateRelAggregates(exporterIFC.GetFile(), guid, exporterIFC.GetOwnerHistoryHandle(), null, null, hostHandle, relatedElementIdSet);
}
}
}
/// <summary>
/// Export the standalone parts:
/// - The parts made from originals in Links
/// - The Orphan parts: the linked file where the original host element comes from is unloaded.
/// - The Zombie parts: the original host element is deleted from the linked file.
/// </summary>
/// <remarks>
/// This is a temporary workaround to export the parts made from linked elements. It should be refined when linked are supported (LinkedInstance at least.)
/// There are some limitations:
/// The linked element will not export as host, including the relative elements: e.g. windows, doors, openings.
/// The host part cannot export if visibility is set by linked view and has 'Show Original'.
/// The standalone part will skip export if Base Level is set 'Non Associated'.
/// The linked part export cannot be split even if its category is wall or column and 'Split wall or column by story' is checked.
/// </remarks>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="partElement">The standalone part to export.</param>
/// <param name="geometryElement">The goemetry of the part.</param>
/// <param name="productWrapper">The ProductWrapper object.</param>
public static void ExportStandalonePart(ExporterIFC exporterIFC, Element partElement, GeometryElement geometryElement, ProductWrapper productWrapper)
{
Part part = partElement as Part;
if (!ExporterCacheManager.ExportOptionsCache.ExportParts || part == null || geometryElement == null)
{
return;
}
if (IsAnyHostElementLocal(part))
{
// Has host element, so should export with host element.
return;
}
ElementId overrideLevelId = null;
if (part.LevelId == ElementId.InvalidElementId)
{
// If part's level is not associated, try to get the host's level with the same category.
Element hostElement = FindRootParent(part, part.OriginalCategoryId);
if (hostElement == null)
{
return;
}
overrideLevelId = hostElement.LevelId;
if (overrideLevelId == ElementId.InvalidElementId)
{
return;
}
}
IFCExtrusionAxes ifcExtrusionAxes = GetDefaultExtrusionAxesForPart(part);
PartExporter.ExportPart(exporterIFC, partElement, productWrapper, null, null, null, ifcExtrusionAxes, null,
overrideLevelId, false);
}
