/// <summary>
/// Gets IFCFileModelOptions from schema name.
/// </summary>
/// <param name="schemaName">The schema name.</param>
/// <param name="schemaVersion">The calculated schema version from the schema name. Default is IFC2x3.</param>
/// <returns>The IFCFileModelOptions.</returns>
static IFCFileModelOptions GetIFCFileModelOptions(string schemaName, out IFCSchemaVersion schemaVersion)
{
IFCFileModelOptions modelOptions = new IFCFileModelOptions();
modelOptions.SchemaName = schemaName;
schemaVersion = IFCSchemaVersion.IFC2x3; // Default, should be overridden.
if (OverrideSchemaFileName != null)
{
modelOptions.SchemaFile = OverrideSchemaFileName;
}
else if (string.Compare(schemaName, "IFC2X3", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X3_TC1.exp");
schemaVersion = IFCSchemaVersion.IFC2x3;
}
else if (string.Compare(schemaName, "IFC2X_FINAL", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X_PROXY.exp");
schemaVersion = IFCSchemaVersion.IFC2x;
}
else if (string.Compare(schemaName, "IFC2X2_FINAL", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X2_ADD1.exp");
schemaVersion = IFCSchemaVersion.IFC2x2;
}
else if (string.Compare(schemaName, "IFC4", true) == 0)
{
// We will still temporarily support the old IFC4.exp file.
string ifc4Add1Path = Path.Combine(RevitProgramPath, "EDM\\IFC4_ADD1.exp");
string ifc4Add2Path = Path.Combine(RevitProgramPath, "EDM\\IFC4_ADD2.exp");
if (File.Exists(ifc4Add2Path))
{
modelOptions.SchemaFile = ifc4Add2Path;
schemaVersion = IFCSchemaVersion.IFC4Add2;
}
else if (File.Exists(ifc4Add1Path))
{
modelOptions.SchemaFile = ifc4Add1Path;
schemaVersion = IFCSchemaVersion.IFC4Add1;
}
else
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC4.exp");
schemaVersion = IFCSchemaVersion.IFC4;
}
}
else
{
throw new ArgumentException("Invalid or unsupported schema: " + schemaName);
}
return(modelOptions);
}
/// <summary>
/// Gets IFCFileModelOptions from schema name.
/// </summary>
/// <param name="schemaName">The schema name.</param>
/// <param name="schemaVersion">The calculated schema version from the schema name. Default is IFC2x3.</param>
/// <returns>The IFCFileModelOptions.</returns>
static IFCFileModelOptions GetIFCFileModelOptions(string schemaName, out IFCSchemaVersion schemaVersion)
{
IFCFileModelOptions modelOptions = new IFCFileModelOptions();
modelOptions.SchemaName = schemaName;
schemaVersion = IFCSchemaVersion.IFC2x3; // Default, should be overridden.
if (OverrideSchemaFileName != null)
{
modelOptions.SchemaFile = OverrideSchemaFileName;
}
else if (string.Compare(schemaName, "IFC2X3", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X3_TC1.exp");
schemaVersion = IFCSchemaVersion.IFC2x3;
}
else if (string.Compare(schemaName, "IFC2X_FINAL", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X_PROXY.exp");
schemaVersion = IFCSchemaVersion.IFC2x;
}
else if (string.Compare(schemaName, "IFC2X2_FINAL", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X2_ADD1.exp");
schemaVersion = IFCSchemaVersion.IFC2x2;
}
else if (string.Compare(schemaName, "IFC4", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC4.exp");
schemaVersion = IFCSchemaVersion.IFC4;
}
else
{
throw new ArgumentException("Invalid or unsupported schema: " + schemaName);
}
return(modelOptions);
}
/// <summary>
/// Creates an IFCFile object from an IFC XML file.
/// </summary>
/// <param name="path">The file path.</param>
/// <param name="schemaVersion">The schema version.</param>
/// <returns>The IFCFile.</returns>
static IFCFile CreateIFCFileFromIFCXML(string path, out IFCSchemaVersion schemaVersion)
{
IFCFile file = null;
string schemaName = null;
schemaVersion = IFCSchemaVersion.IFC2x3;
// This is an optional location to find the schema name - it may not be supplied.
using (XmlReader reader = XmlReader.Create(new StreamReader(path)))
{
reader.ReadToFollowing("doc:express");
reader.MoveToAttribute("schema_name");
schemaName = reader.Value.Replace(" ", "").Replace("\t", "").Replace("\r", "").Replace("\n", "");
}
// This is an alternate location compatible with some MAP ifcXML files.
if (string.IsNullOrEmpty(schemaName))
{
using (XmlReader reader = XmlReader.Create(new StreamReader(path)))
{
reader.ReadToFollowing("doc:iso_10303_28");
reader.MoveToAttribute("xmlns:schemaLocation");
int ifcLoc = reader.Value.IndexOf("IFC");
if (ifcLoc >= 0)
{
string tmpName = reader.Value.Substring(ifcLoc);
int ifcEndLoc = tmpName.IndexOf('/');
if (ifcEndLoc > 0)
{
schemaName = tmpName.Substring(0, ifcEndLoc);
}
}
}
}
// This checks to see if we have an unsupported IFC2X3_RC1 file.
if (string.IsNullOrEmpty(schemaName))
{
using (XmlReader reader = XmlReader.Create(new StreamReader(path)))
{
reader.ReadToFollowing("ex:iso_10303_28");
reader.MoveToAttribute("xmlns:ifc");
int ifcLoc = reader.Value.IndexOf("IFC");
if (ifcLoc >= 0)
{
schemaName = reader.Value.Substring(ifcLoc);
}
}
}
if (!string.IsNullOrEmpty(schemaName))
{
IFCFileModelOptions modelOptions = GetIFCFileModelOptions(schemaName, out schemaVersion);
file = IFCFile.Create(modelOptions);
}
if (file == null)
{
throw new InvalidOperationException("Can't determine XML file schema.");
}
return(file);
}
/// <summary>
/// Creates an IFCFile object from a standard IFC file.
/// </summary>
/// <param name="path">The file path.</param>
/// <param name="schemaVersion">The schema version.</param>
/// <returns>The IFCFile.</returns>
static IFCFile CreateIFCFileFromIFC(string path, out IFCSchemaVersion schemaVersion)
{
string schemaString = string.Empty;
string schemaName = null;
using (StreamReader sr = new StreamReader(path))
{
string schemaKeyword = "FILE_SCHEMA((";
bool found = false;
while (sr.Peek() >= 0)
{
string lineString = schemaString + sr.ReadLine();
lineString = lineString.Replace(" ", "").Replace("\t", "").Replace("\r", "").Replace("\n", "");
string[] schemaNames = lineString.Split(';');
for (int ii = 0; ii < schemaNames.Length; ii++)
{
schemaString = schemaNames[ii];
int idx = schemaString.IndexOf(schemaKeyword);
int schemaIdxStart = -1;
int schemaIdxEnd = -1;
if (idx != -1)
{
idx += schemaKeyword.Length;
if (idx < schemaString.Length && schemaString[idx] == '\'')
{
schemaIdxStart = ++idx;
for (; idx < schemaString.Length; idx++)
{
if (schemaString[idx] == '\'')
{
schemaIdxEnd = idx;
found = true;
break;
}
}
}
}
if (found)
{
schemaName = schemaString.Substring(schemaIdxStart, schemaIdxEnd - schemaIdxStart);
break;
}
}
if (found)
{
break;
}
}
}
IFCFile file = null;
schemaVersion = IFCSchemaVersion.IFC2x3;
if (!string.IsNullOrEmpty(schemaName))
{
IFCFileModelOptions modelOptions = GetIFCFileModelOptions(schemaName, out schemaVersion);
file = IFCFile.Create(modelOptions);
}
return(file);
}
/// <summary>
/// Sets the schema information for the current export options. This can be overridden.
/// </summary>
protected virtual IFCFileModelOptions CreateIFCFileModelOptions(ExporterIFC exporterIFC)
{
IFCFileModelOptions modelOptions = new IFCFileModelOptions();
if (ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X2_ADD1.exp");
modelOptions.SchemaName = "IFC2x2_FINAL";
}
else if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC4.exp");
modelOptions.SchemaName = "IFC4";
}
else
{
// We leave IFC2x3 as default until IFC4 is finalized and generally supported across platforms.
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X3_TC1.exp");
modelOptions.SchemaName = "IFC2x3";
}
return modelOptions;
}
/// <summary>
/// Sets the schema information for the current export options. This can be overridden.
/// </summary>
protected virtual IFCFileModelOptions CreateIFCFileModelOptions(ExporterIFC exporterIFC)
{
IFCFileModelOptions modelOptions = new IFCFileModelOptions();
if (exporterIFC.ExportAs2x2)
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X2_ADD1.exp");
modelOptions.SchemaName = "IFC2x2_FINAL";
}
else
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X3_TC1.exp");
modelOptions.SchemaName = "IFC2x3";
}
return modelOptions;
}
/// <summary>
/// Gets IFCFileModelOptions from schema name.
/// </summary>
/// <param name="schemaName">The schema name.</param>
/// <param name="schemaVersion">The calculated schema version from the schema name. Default is IFC2x3.</param>
/// <returns>The IFCFileModelOptions.</returns>
static IFCFileModelOptions GetIFCFileModelOptions(string schemaName, out IFCSchemaVersion schemaVersion)
{
IFCFileModelOptions modelOptions = new IFCFileModelOptions();
modelOptions.SchemaName = schemaName;
schemaVersion = IFCSchemaVersion.IFC2x3; // Default, should be overridden.
if (OverrideSchemaFileName != null)
{
modelOptions.SchemaFile = OverrideSchemaFileName;
}
else if (string.Compare(schemaName, "IFC2X3", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X3_TC1.exp");
schemaVersion = IFCSchemaVersion.IFC2x3;
}
else if (string.Compare(schemaName, "IFC2X_FINAL", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X_PROXY.exp");
schemaVersion = IFCSchemaVersion.IFC2x;
}
else if (string.Compare(schemaName, "IFC2X2_FINAL", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC2X2_ADD1.exp");
schemaVersion = IFCSchemaVersion.IFC2x2;
}
else if (string.Compare(schemaName, "IFC4", true) == 0)
{
modelOptions.SchemaFile = Path.Combine(RevitProgramPath, "EDM\\IFC4.exp");
schemaVersion = IFCSchemaVersion.IFC4;
}
else
throw new ArgumentException("Invalid or unsupported schema: " + schemaName);
return modelOptions;
}
/// <summary>
/// Initializes the common properties at the beginning of the export process.
/// </summary>
/// <param name="exporterIFC">The IFC exporter object.</param>
/// <param name="document">The document to export.</param>
private void BeginExport(ExporterIFC exporterIFC, Document document)
{
ExporterCacheManager.Document = document;
String writeIFCExportedElementsVar = Environment.GetEnvironmentVariable("WriteIFCExportedElements");
if (writeIFCExportedElementsVar != null && writeIFCExportedElementsVar.Length > 0)
{
m_Writer = new StreamWriter(@"c:\ifc-output-filters.txt");
}
IFCFileModelOptions modelOptions = new IFCFileModelOptions();
if (exporterIFC.ExportAs2x2)
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X2_ADD1.exp");
modelOptions.SchemaName = "IFC2x2_FINAL";
}
else
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X3_TC1.exp");
modelOptions.SchemaName = "IFC2x3";
}
m_IfcFile = IFCFile.Create(modelOptions);
exporterIFC.SetFile(m_IfcFile);
//init common properties
ExporterInitializer.InitPropertySets(ExporterCacheManager.ExportOptionsCache.FileVersion);
ExporterInitializer.InitQuantities(ExporterCacheManager.ExportOptionsCache.FileVersion, ExporterCacheManager.ExportOptionsCache.ExportBaseQuantities);
IFCFile file = exporterIFC.GetFile();
using (IFCTransaction transaction = new IFCTransaction(file))
{
// create building
IFCAnyHandle applicationHandle = CreateApplicationInformation(file, document.Application);
CreateGlobalCartesianOrigin(exporterIFC);
CreateGlobalDirection(exporterIFC);
CreateGlobalDirection2D(exporterIFC);
IFCAnyHandle units = CreateDefaultUnits(exporterIFC, document);
// Start out relative to nothing, but replace with site later.
IFCAnyHandle relativePlacement = ExporterUtil.CreateAxis2Placement3D(file);
IFCAnyHandle buildingPlacement = IFCInstanceExporter.CreateLocalPlacement(file, null, relativePlacement);
HashSet<IFCAnyHandle> repContexts = CreateContextInformation(exporterIFC, document);
IFCAnyHandle ownerHistory = CreateGenericOwnerHistory(exporterIFC, document, applicationHandle);
exporterIFC.SetOwnerHistoryHandle(ownerHistory);
IFCAnyHandle projectHandle = IFCInstanceExporter.CreateProject(file,
ExporterIFCUtils.CreateProjectLevelGUID(document, IFCProjectLevelGUIDType.Project), ownerHistory,
null, null, null, null, null, repContexts, units);
exporterIFC.SetProject(projectHandle);
ProjectInfo projInfo = document.ProjectInformation;
string projectAddress = projInfo != null ? projInfo.Address : String.Empty;
SiteLocation siteLoc = document.ActiveProjectLocation.SiteLocation;
string location = siteLoc != null ? siteLoc.PlaceName : String.Empty;
if (projectAddress == null)
projectAddress = String.Empty;
if (location == null)
location = String.Empty;
IFCAnyHandle buildingAddress = CreateIFCAddress(file, projectAddress, location);
string buildingName = String.Empty;
if (projInfo != null)
{
try
{
buildingName = projInfo.BuildingName;
}
catch (Autodesk.Revit.Exceptions.InvalidOperationException)
{
}
}
IFCAnyHandle buildingHandle = IFCInstanceExporter.CreateBuilding(file,
ExporterIFCUtils.CreateProjectLevelGUID(document, IFCProjectLevelGUIDType.Building),
ownerHistory, buildingName, null, null, buildingPlacement, null, buildingName,
Toolkit.IFCElementComposition.Element, null, null, buildingAddress);
exporterIFC.SetBuilding(buildingHandle);
// create levels
List<Level> levels = LevelUtil.FindAllLevels(document);
bool exportAllLevels = true;
for (int ii = 0; ii < levels.Count && exportAllLevels; ii++)
{
Level level = levels[ii];
Parameter isBuildingStorey = level.get_Parameter(BuiltInParameter.LEVEL_IS_BUILDING_STORY);
if (isBuildingStorey == null || (isBuildingStorey.AsInteger() != 0))
{
exportAllLevels = false;
break;
}
}
IList<Element> unassignedBaseLevels = new List<Element>();
ExporterCacheManager.ExportOptionsCache.ExportAllLevels = exportAllLevels;
double scaleFactor = exporterIFC.LinearScale;
IFCAnyHandle prevBuildingStorey = null;
IFCAnyHandle prevPlacement = null;
double prevHeight = 0.0;
double prevElev = 0.0;
for (int ii = 0; ii < levels.Count; ii++)
{
Level level = levels[ii];
if (level == null)
continue;
IFCLevelInfo levelInfo = null;
if (!LevelUtil.IsBuildingStory(level))
{
if (prevBuildingStorey == null)
unassignedBaseLevels.Add(level);
else
{
levelInfo = IFCLevelInfo.Create(prevBuildingStorey, prevPlacement, prevHeight, prevElev, scaleFactor, true);
ExporterCacheManager.LevelInfoCache.AddLevelInfo(exporterIFC, level.Id, levelInfo);
}
continue;
}
// When exporting to IFC 2x3, we have a limited capability to export some Revit view-specific
// elements, specifically Filled Regions and Text. However, we do not have the
// capability to choose which views to export. As such, we will choose (up to) one DBView per
// exported level.
// TODO: Let user choose which view(s) to export. Ensure that the user know that only one view
// per level is supported.
View view = LevelUtil.FindViewByLevel(document, ViewType.FloorPlan, level);
if (view != null)
{
exporterIFC.AddViewIdToExport(view.Id, level.Id);
}
double elev = level.ProjectElevation;
double height = 0.0;
List<ElementId> coincidentLevels = new List<ElementId>();
for (int jj = ii+1; jj < levels.Count; jj++)
{
Level nextLevel = levels[jj];
if (!LevelUtil.IsBuildingStory(nextLevel))
continue;
double nextElev = nextLevel.ProjectElevation;
if (!MathUtil.IsAlmostEqual(nextElev, elev))
{
height = nextElev - elev;
break;
}
else if (ExporterCacheManager.ExportOptionsCache.WallAndColumnSplitting)
coincidentLevels.Add(nextLevel.Id);
}
double elevation = elev * scaleFactor;
XYZ orig = new XYZ(0.0, 0.0, elevation);
IFCAnyHandle axis2Placement3D = ExporterUtil.CreateAxis2Placement3D(file, orig);
IFCAnyHandle placement = IFCInstanceExporter.CreateLocalPlacement(file, buildingPlacement, axis2Placement3D);
string levelName = level.Name;
string levelGUID = LevelUtil.GetLevelGUID(level);
IFCAnyHandle buildingStorey = IFCInstanceExporter.CreateBuildingStorey(file,
levelGUID, exporterIFC.GetOwnerHistoryHandle(),
levelName, null, null, placement,
null, levelName, Toolkit.IFCElementComposition.Element, elevation);
// If we are using the R2009 Level GUIDs, write it to a shared paramter in the file to ensure that it is preserved.
if (ExporterCacheManager.ExportOptionsCache.Use2009BuildingStoreyGUIDs)
{
string oldLevelGUID;
ParameterUtil.GetStringValueFromElement(level, BuiltInParameter.IFC_GUID, out oldLevelGUID);
if (String.IsNullOrEmpty(oldLevelGUID))
{
ParameterUtil.SetStringParameter(level, BuiltInParameter.IFC_GUID, levelGUID);
}
}
if (prevBuildingStorey == null)
{
foreach (Level baseLevel in unassignedBaseLevels)
{
levelInfo = IFCLevelInfo.Create(buildingStorey, placement, height, elev, scaleFactor, true);
ExporterCacheManager.LevelInfoCache.AddLevelInfo(exporterIFC, baseLevel.Id, levelInfo);
}
}
prevBuildingStorey = buildingStorey;
prevPlacement = placement;
prevHeight = height;
prevElev = elev;
levelInfo = IFCLevelInfo.Create(buildingStorey, placement, height, elev, scaleFactor, true);
ExporterCacheManager.LevelInfoCache.AddLevelInfo(exporterIFC, level.Id, levelInfo);
// if we have coincident levels, add buildingstoreys for them but use the old handle.
for (int jj = 0; jj < coincidentLevels.Count; jj++)
{
level = levels[ii + jj + 1];
levelInfo = IFCLevelInfo.Create(buildingStorey, placement, height, elev, scaleFactor, true);
ExporterCacheManager.LevelInfoCache.AddLevelInfo(exporterIFC, level.Id, levelInfo);
}
ii += coincidentLevels.Count;
}
transaction.Commit();
}
}
/// <summary>
/// Sets the schema information for the current export options. This can be overridden.
/// </summary>
protected virtual IFCFileModelOptions CreateIFCFileModelOptions(ExporterIFC exporterIFC)
{
IFCFileModelOptions modelOptions = new IFCFileModelOptions();
if (ExporterCacheManager.ExportOptionsCache.ExportAs2x2)
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X2_ADD1.exp");
modelOptions.SchemaName = "IFC2x2_FINAL";
}
else if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
ExporterCacheManager.ExportOptionsCache.ExportAs4_ADD1 = true;
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC4_ADD1.exp");
// If the IFC4_ADD1 file does not exists it takes the IFC4 file as its default.
if (!File.Exists(modelOptions.SchemaFile))
{
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC4.exp");
ExporterCacheManager.ExportOptionsCache.ExportAs4_ADD1 = false;
}
modelOptions.SchemaName = "IFC4";
}
else
{
// We leave IFC2x3 as default until IFC4 is finalized and generally supported across platforms.
modelOptions.SchemaFile = Path.Combine(ExporterUtil.RevitProgramPath, "EDM\\IFC2X3_TC1.exp");
modelOptions.SchemaName = "IFC2x3";
}
return modelOptions;
}
