/// <summary>
/// Exports a CeilingAndFloor element to IFC.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="floor">The floor element.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="productWrapper">The ProductWrapper.</param>
public static void ExportCeilingAndFloorElement(ExporterIFC exporterIFC, CeilingAndFloor floorElement, GeometryElement geometryElement,
ProductWrapper productWrapper)
{
if (geometryElement == null)
{
return;
}
// export parts or not
bool exportParts = PartExporter.CanExportParts(floorElement);
if (exportParts && !PartExporter.CanExportElementInPartExport(floorElement, floorElement.LevelId, false))
{
return;
}
IFCFile file = exporterIFC.GetFile();
string ifcEnumType;
IFCExportInfoPair exportType = ExporterUtil.GetExportType(exporterIFC, floorElement, out ifcEnumType);
IFCAnyHandle type = null;
MaterialLayerSetInfo layersetInfo = null;
if (!ElementFilteringUtil.IsElementVisible(floorElement))
{
return;
}
// Check the intended IFC entity or type name is in the exclude list specified in the UI
Common.Enums.IFCEntityType elementClassTypeEnum;
if (Enum.TryParse <Common.Enums.IFCEntityType>(exportType.ExportInstance.ToString(), out elementClassTypeEnum) ||
Enum.TryParse <Common.Enums.IFCEntityType>(exportType.ExportType.ToString(), out elementClassTypeEnum))
{
if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum))
{
return;
}
}
Document doc = floorElement.Document;
using (SubTransaction tempPartTransaction = new SubTransaction(doc))
{
// For IFC4RV export, Floor will be split into its parts(temporarily) in order to export the floor by its parts
bool exportByComponents = ExporterUtil.ShouldExportByComponents(floorElement, exportParts);
using (IFCTransaction tr = new IFCTransaction(file))
{
bool canExportAsContainerOrWithExtrusionAnalyzer = (!exportParts && (floorElement is Floor));
if (canExportAsContainerOrWithExtrusionAnalyzer)
{
// Try to export the Floor slab as a container. If that succeeds, we are done.
// If we do export the floor as a container, it will take care of the local placement and transform there, so we need to leave
// this out of the IFCTransformSetter and PlacementSetter scopes below, or else we'll get double transforms.
IFCAnyHandle floorHnd = RoofExporter.ExportRoofOrFloorAsContainer(exporterIFC, floorElement, geometryElement, productWrapper);
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(floorHnd))
{
tr.Commit();
return;
}
}
IList <IFCAnyHandle> slabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> brepSlabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> nonBrepSlabHnds = new List <IFCAnyHandle>();
IFCAnyHandle ownerHistory = ExporterCacheManager.OwnerHistoryHandle;
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
// Check for containment override
IFCAnyHandle overrideContainerHnd = null;
ElementId overrideContainerId = ParameterUtil.OverrideContainmentParameter(exporterIFC, floorElement, out overrideContainerHnd);
using (PlacementSetter placementSetter = PlacementSetter.Create(exporterIFC, floorElement, null, null, overrideContainerId, overrideContainerHnd))
{
IFCAnyHandle localPlacement = placementSetter.LocalPlacement;
// The routine ExportExtrudedSlabOpenings is called if exportedAsInternalExtrusion is true, and it requires having a valid level association.
// Disable calling ExportSlabAsExtrusion if we can't handle potential openings.
bool canExportAsInternalExtrusion = placementSetter.LevelInfo != null;
bool exportedAsInternalExtrusion = false;
ElementId catId = CategoryUtil.GetSafeCategoryId(floorElement);
IList <IFCAnyHandle> prodReps = new List <IFCAnyHandle>();
IList <ShapeRepresentationType> repTypes = new List <ShapeRepresentationType>();
IList <IList <CurveLoop> > extrusionLoops = new List <IList <CurveLoop> >();
IList <IFCExtrusionCreationData> loopExtraParams = new List <IFCExtrusionCreationData>();
Plane floorPlane = GeometryUtil.CreateDefaultPlane();
IList <IFCAnyHandle> localPlacements = new List <IFCAnyHandle>();
if (canExportAsContainerOrWithExtrusionAnalyzer)
{
Floor floor = floorElement as Floor;
// Next, try to use the ExtrusionAnalyzer for the limited cases it handles - 1 solid, no openings, end clippings only.
// Also limited to cases with line and arc boundaries.
//
SolidMeshGeometryInfo solidMeshInfo = GeometryUtil.GetSplitSolidMeshGeometry(geometryElement);
IList <Solid> solids = solidMeshInfo.GetSolids();
IList <Mesh> meshes = solidMeshInfo.GetMeshes();
IList <GeometryObject> gObjs = FamilyExporterUtil.RemoveInvisibleSolidsAndMeshes(floorElement.Document, exporterIFC, ref solids, ref meshes);
if (solids.Count == 1 && meshes.Count == 0)
{
bool completelyClipped;
// floorExtrusionDirection is set to (0, 0, -1) because extrusionAnalyzerFloorPlane is computed from the top face of the floor
XYZ floorExtrusionDirection = new XYZ(0, 0, -1);
XYZ modelOrigin = XYZ.Zero;
XYZ floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
if (floorOrigin == null)
{
// GetVerticalProjectionPoint may return null if FloorFace.Top is an edited face that doesn't
// go through the Revit model origin. We'll try the midpoint of the bounding box instead.
BoundingBoxXYZ boundingBox = floorElement.get_BoundingBox(null);
modelOrigin = (boundingBox.Min + boundingBox.Max) / 2.0;
floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
}
if (floorOrigin != null)
{
XYZ floorDir = floor.GetNormalAtVerticalProjectionPoint(floorOrigin, FloorFace.Top);
Plane extrusionAnalyzerFloorBasePlane = GeometryUtil.CreatePlaneByNormalAtOrigin(floorDir);
GenerateAdditionalInfo additionalInfo = GenerateAdditionalInfo.GenerateBody;
additionalInfo |= ExporterCacheManager.ExportOptionsCache.ExportAs4 ?
GenerateAdditionalInfo.GenerateFootprint : GenerateAdditionalInfo.None;
// Skip generate body item for IFC4RV. It will be handled later in PartExporter.ExportHostPartAsShapeAspects()
if (exportByComponents)
{
additionalInfo &= ~GenerateAdditionalInfo.GenerateBody;
}
HandleAndData floorAndProperties =
ExtrusionExporter.CreateExtrusionWithClippingAndProperties(exporterIFC, floorElement,
catId, solids[0], extrusionAnalyzerFloorBasePlane, floorOrigin, floorExtrusionDirection, null, out completelyClipped,
addInfo: additionalInfo);
if (completelyClipped)
{
return;
}
IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();
if (floorAndProperties.Handle != null)
{
representations.Add(floorAndProperties.Handle);
repTypes.Add(ShapeRepresentationType.SweptSolid);
}
// Footprint representation will only be exported in export to IFC4
if (((additionalInfo & GenerateAdditionalInfo.GenerateFootprint) != 0) && (floorAndProperties.FootprintInfo != null))
{
IFCAnyHandle footprintShapeRep = floorAndProperties.FootprintInfo.CreateFootprintShapeRepresentation(exporterIFC);
representations.Add(footprintShapeRep);
}
if (exportByComponents)
{
IFCAnyHandle prodRep = RepresentationUtil.CreateProductDefinitionShapeWithoutBodyRep(exporterIFC, floorElement, catId, geometryElement, representations);
prodReps.Add(prodRep);
}
else if (representations.Count > 0 && floorAndProperties.Handle != null) // Only when at least the body rep exists will come here
{
IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);
prodReps.Add(prodRep);
}
if (floorAndProperties.Data != null)
{
loopExtraParams.Add(floorAndProperties.Data);
}
}
}
}
// Use internal routine as backup that handles openings.
if (prodReps.Count == 0 && canExportAsInternalExtrusion && !exportByComponents)
{
exportedAsInternalExtrusion = ExporterIFCUtils.ExportSlabAsExtrusion(exporterIFC, floorElement,
geometryElement, transformSetter, localPlacement, out localPlacements, out prodReps,
out extrusionLoops, out loopExtraParams, floorPlane);
PotentiallyFixPresentationLayerAssignment(floorElement, prodReps);
for (int ii = 0; ii < prodReps.Count; ii++)
{
// all are extrusions
repTypes.Add(ShapeRepresentationType.SweptSolid);
// Footprint representation will only be exported in export to IFC4
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
if (extrusionLoops.Count > ii)
{
if (extrusionLoops[ii].Count > 0)
{
// Get the extrusion footprint using the first Curveloop. Transform needs to be obtained from the returned local placement
Transform lcs = ExporterIFCUtils.GetUnscaledTransform(exporterIFC, localPlacements[ii]);
IFCAnyHandle footprintGeomRepItem = GeometryUtil.CreateIFCCurveFromCurveLoop(exporterIFC, extrusionLoops[ii][0], lcs, floorPlane.Normal);
IFCAnyHandle contextOfItemsFootprint = exporterIFC.Get3DContextHandle("FootPrint");
ISet <IFCAnyHandle> repItem = new HashSet <IFCAnyHandle>();
repItem.Add(footprintGeomRepItem);
IFCAnyHandle footprintShapeRepresentation = RepresentationUtil.CreateBaseShapeRepresentation(exporterIFC, contextOfItemsFootprint, "FootPrint", "Curve2D", repItem);
IList <IFCAnyHandle> reps = new List <IFCAnyHandle>();
reps.Add(footprintShapeRepresentation);
IFCAnyHandleUtil.AddRepresentations(prodReps[ii], reps);
}
}
}
}
}
IFCAnyHandle prodDefHnd;
if (prodReps.Count == 0)
{
if (exportByComponents)
{
prodDefHnd = RepresentationUtil.CreateProductDefinitionShapeWithoutBodyRep(exporterIFC, floorElement, catId, geometryElement, null);
prodReps.Add(prodDefHnd);
}
else
{
using (IFCExtrusionCreationData ecData = new IFCExtrusionCreationData())
{
// Brep representation using tesellation after ExportSlabAsExtrusion does not return prodReps
BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true, ExportOptionsCache.ExportTessellationLevel.Medium);
BodyData bodyData;
prodDefHnd = RepresentationUtil.CreateAppropriateProductDefinitionShape(exporterIFC,
floorElement, catId, geometryElement, bodyExporterOptions, null, ecData, out bodyData);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(prodDefHnd))
{
ecData.ClearOpenings();
return;
}
prodReps.Add(prodDefHnd);
repTypes.Add(bodyData.ShapeRepresentationType);
}
}
}
// Create the slab from either the extrusion or the BRep information.
string ifcGUID = GUIDUtil.CreateGUID(floorElement);
int numReps = exportParts ? 1 : prodReps.Count;
// Deal with a couple of cases that have non-standard defaults.
switch (exportType.ExportInstance)
{
case IFCEntityType.IfcCovering:
exportType.ValidatedPredefinedType = IFCValidateEntry.GetValidIFCType <IFCCoveringType>(floorElement, ifcEnumType, "FLOORING");
break;
case IFCEntityType.IfcSlab:
bool isBaseSlab = false;
AnalyticalModel analyticalModel = floorElement.GetAnalyticalModel();
if (analyticalModel != null)
{
AnalyzeAs slabFoundationType = analyticalModel.GetAnalyzeAs();
isBaseSlab = (slabFoundationType == AnalyzeAs.SlabOnGrade) || (slabFoundationType == AnalyzeAs.Mat);
}
exportType.ValidatedPredefinedType = IFCValidateEntry.GetValidIFCType <IFCSlabType>(floorElement, ifcEnumType, isBaseSlab ? "BASESLAB" : "FLOOR");
break;
}
for (int ii = 0; ii < numReps; ii++)
{
string ifcName = NamingUtil.GetNameOverride(floorElement, NamingUtil.GetIFCNamePlusIndex(floorElement, ii == 0 ? -1 : ii + 1));
string currentGUID = (ii == 0) ? ifcGUID : GUIDUtil.CreateGUID();
IFCAnyHandle localPlacementHnd = exportedAsInternalExtrusion ? localPlacements[ii] : localPlacement;
IFCAnyHandle slabHnd = null;
slabHnd = IFCInstanceExporter.CreateGenericIFCEntity(exportType, exporterIFC, floorElement, currentGUID, ownerHistory,
localPlacementHnd, exportParts ? null : prodReps[ii]);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(slabHnd))
{
return;
}
if (!string.IsNullOrEmpty(ifcName))
{
IFCAnyHandleUtil.OverrideNameAttribute(slabHnd, ifcName);
}
// Pre IFC4 Slab does not have PredefinedType
if (!string.IsNullOrEmpty(exportType.ValidatedPredefinedType) && !ExporterCacheManager.ExportOptionsCache.ExportAsOlderThanIFC4)
{
IFCAnyHandleUtil.SetAttribute(slabHnd, "PredefinedType", exportType.ValidatedPredefinedType, true);
}
if (exportParts && !ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
PartExporter.ExportHostPart(exporterIFC, floorElement, slabHnd, productWrapper, placementSetter, localPlacementHnd, null);
}
else if (exportByComponents)
{
IFCExtrusionCreationData partECData = new IFCExtrusionCreationData();
IFCAnyHandle hostShapeRepFromParts = PartExporter.ExportHostPartAsShapeAspects(exporterIFC, floorElement, prodReps[ii],
productWrapper, placementSetter, localPlacement, ElementId.InvalidElementId, out layersetInfo, partECData);
loopExtraParams.Add(partECData);
}
slabHnds.Add(slabHnd);
// For IFC4RV, export of the geometry is already handled in PartExporter.ExportHostPartAsShapeAspects()
if (!exportParts && !exportByComponents)
{
if (repTypes[ii] == ShapeRepresentationType.Brep || repTypes[ii] == ShapeRepresentationType.Tessellation)
{
brepSlabHnds.Add(slabHnd);
}
else
{
nonBrepSlabHnds.Add(slabHnd);
}
}
}
for (int ii = 0; ii < numReps; ii++)
{
IFCExtrusionCreationData loopExtraParam = ii < loopExtraParams.Count ? loopExtraParams[ii] : null;
productWrapper.AddElement(floorElement, slabHnds[ii], placementSetter, loopExtraParam, true, exportType);
type = ExporterUtil.CreateGenericTypeFromElement(floorElement, exportType, file, ownerHistory, exportType.ValidatedPredefinedType, productWrapper);
ExporterCacheManager.TypeRelationsCache.Add(type, slabHnds[ii]);
ExporterUtil.AddIntoComplexPropertyCache(slabHnds[ii], layersetInfo);
}
// This call to the native function appears to create Brep opening also when appropriate. But the creation of the IFC instances is not
// controllable from the managed code. Therefore in some cases BRep geometry for Opening will still be exported even in the Reference View
if (exportedAsInternalExtrusion)
{
ISet <IFCAnyHandle> oldCreatedObjects = productWrapper.GetAllObjects();
ExporterIFCUtils.ExportExtrudedSlabOpenings(exporterIFC, floorElement, placementSetter.LevelInfo,
localPlacements[0], slabHnds, extrusionLoops, floorPlane, productWrapper.ToNative());
ISet <IFCAnyHandle> newCreatedObjects = productWrapper.GetAllObjects();
newCreatedObjects.ExceptWith(oldCreatedObjects);
PotentiallyFixPresentationLayerAssignment(floorElement, newCreatedObjects);
}
}
if (!exportParts)
{
if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement, productWrapper.GetAnElement(),
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, false, type);
}
else
{
if (nonBrepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement, nonBrepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, false, type);
}
if (brepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement, brepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, true, type);
}
}
}
}
tr.Commit();
return;
}
}
}
/// <summary>
/// Exports a CeilingAndFloor element to IFC.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="floor">The floor element.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="productWrapper">The ProductWrapper.</param>
public static void ExportCeilingAndFloorElement(ExporterIFC exporterIFC, CeilingAndFloor floorElement, GeometryElement geometryElement,
ProductWrapper productWrapper)
{
if (geometryElement == null)
{
return;
}
// export parts or not
bool exportParts = PartExporter.CanExportParts(floorElement);
if (exportParts && !PartExporter.CanExportElementInPartExport(floorElement, floorElement.LevelId, false))
{
return;
}
IFCFile file = exporterIFC.GetFile();
string ifcEnumType;
IFCExportType exportType = ExporterUtil.GetExportType(exporterIFC, floorElement, out ifcEnumType);
using (IFCTransaction tr = new IFCTransaction(file))
{
bool canExportAsContainerOrWithExtrusionAnalyzer = (!exportParts && (floorElement is Floor));
IList <IFCAnyHandle> slabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> brepSlabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> nonBrepSlabHnds = new List <IFCAnyHandle>();
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
using (PlacementSetter placementSetter = PlacementSetter.Create(exporterIFC, floorElement))
{
IFCAnyHandle localPlacement = placementSetter.LocalPlacement;
IFCAnyHandle ownerHistory = ExporterCacheManager.OwnerHistoryHandle;
// The routine ExportExtrudedSlabOpenings is called if exportedAsInternalExtrusion is true, and it requires having a valid level association.
// Disable calling ExportSlabAsExtrusion if we can't handle potential openings.
bool canExportAsInternalExtrusion = placementSetter.LevelInfo != null;
bool exportedAsInternalExtrusion = false;
ElementId catId = CategoryUtil.GetSafeCategoryId(floorElement);
IList <IFCAnyHandle> prodReps = new List <IFCAnyHandle>();
IList <ShapeRepresentationType> repTypes = new List <ShapeRepresentationType>();
IList <IList <CurveLoop> > extrusionLoops = new List <IList <CurveLoop> >();
IList <IFCExtrusionCreationData> loopExtraParams = new List <IFCExtrusionCreationData>();
Plane floorPlane = GeometryUtil.CreateDefaultPlane();
IList <IFCAnyHandle> localPlacements = new List <IFCAnyHandle>();
if (canExportAsContainerOrWithExtrusionAnalyzer)
{
Floor floor = floorElement as Floor;
// First, try to use the ExtrusionAnalyzer for the limited cases it handles - 1 solid, no openings, end clippings only.
// Also limited to cases with line and arc boundaries.
//
SolidMeshGeometryInfo solidMeshInfo = GeometryUtil.GetSplitSolidMeshGeometry(geometryElement);
IList <Solid> solids = solidMeshInfo.GetSolids();
IList <Mesh> meshes = solidMeshInfo.GetMeshes();
if (solids.Count == 1 && meshes.Count == 0)
{
bool completelyClipped;
// floorExtrusionDirection is set to (0, 0, -1) because extrusionAnalyzerFloorPlane is computed from the top face of the floor
XYZ floorExtrusionDirection = new XYZ(0, 0, -1);
XYZ modelOrigin = XYZ.Zero;
XYZ floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
if (floorOrigin == null)
{
// GetVerticalProjectionPoint may return null if FloorFace.Top is an edited face that doesn't
// go thruough te Revit model orgigin. We'll try the midpoint of the bounding box instead.
BoundingBoxXYZ boundingBox = floorElement.get_BoundingBox(null);
modelOrigin = (boundingBox.Min + boundingBox.Max) / 2.0;
floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
}
if (floorOrigin != null)
{
XYZ floorDir = floor.GetNormalAtVerticalProjectionPoint(floorOrigin, FloorFace.Top);
Plane extrusionAnalyzerFloorPlane = new Plane(floorDir, floorOrigin);
HandleAndData floorAndProperties =
ExtrusionExporter.CreateExtrusionWithClippingAndProperties(exporterIFC, floorElement,
catId, solids[0], extrusionAnalyzerFloorPlane, floorExtrusionDirection, null, out completelyClipped);
if (completelyClipped)
{
return;
}
if (floorAndProperties.Handle != null)
{
IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();
representations.Add(floorAndProperties.Handle);
IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);
prodReps.Add(prodRep);
repTypes.Add(ShapeRepresentationType.SweptSolid);
if (floorAndProperties.Data != null)
{
loopExtraParams.Add(floorAndProperties.Data);
}
}
}
}
}
// Use internal routine as backup that handles openings.
if (prodReps.Count == 0 && canExportAsInternalExtrusion)
{
exportedAsInternalExtrusion = ExporterIFCUtils.ExportSlabAsExtrusion(exporterIFC, floorElement,
geometryElement, transformSetter, localPlacement, out localPlacements, out prodReps,
out extrusionLoops, out loopExtraParams, floorPlane);
for (int ii = 0; ii < prodReps.Count; ii++)
{
// all are extrusions
repTypes.Add(ShapeRepresentationType.SweptSolid);
}
}
if (prodReps.Count == 0)
{
using (IFCExtrusionCreationData ecData = new IFCExtrusionCreationData())
{
BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true, ExportOptionsCache.ExportTessellationLevel.Medium);
BodyData bodyData;
IFCAnyHandle prodDefHnd = RepresentationUtil.CreateAppropriateProductDefinitionShape(exporterIFC,
floorElement, catId, geometryElement, bodyExporterOptions, null, ecData, out bodyData);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(prodDefHnd))
{
ecData.ClearOpenings();
return;
}
prodReps.Add(prodDefHnd);
repTypes.Add(bodyData.ShapeRepresentationType);
}
}
// Create the slab from either the extrusion or the BRep information.
string ifcGUID = GUIDUtil.CreateGUID(floorElement);
int numReps = exportParts ? 1 : prodReps.Count;
string entityType = null;
switch (exportType)
{
case IFCExportType.IfcFooting:
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
entityType = IFCValidateEntry.GetValidIFCType <Revit.IFC.Export.Toolkit.IFC4.IFCFootingType>(floorElement, ifcEnumType, null);
}
else
{
entityType = IFCValidateEntry.GetValidIFCType <IFCFootingType>(floorElement, ifcEnumType, null);
}
break;
case IFCExportType.IfcCovering:
entityType = IFCValidateEntry.GetValidIFCType <IFCCoveringType>(floorElement, ifcEnumType, "FLOORING");
break;
case IFCExportType.IfcRamp:
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
entityType = IFCValidateEntry.GetValidIFCType <Revit.IFC.Export.Toolkit.IFC4.IFCRampType>(floorElement, ifcEnumType, null);
}
else
{
entityType = IFCValidateEntry.GetValidIFCType <IFCRampType>(floorElement, ifcEnumType, null);
}
break;
default:
bool isBaseSlab = false;
AnalyticalModel analyticalModel = floorElement.GetAnalyticalModel();
if (analyticalModel != null)
{
AnalyzeAs slabFoundationType = analyticalModel.GetAnalyzeAs();
isBaseSlab = (slabFoundationType == AnalyzeAs.SlabOnGrade) || (slabFoundationType == AnalyzeAs.Mat);
}
entityType = IFCValidateEntry.GetValidIFCType <IFCSlabType>(floorElement, ifcEnumType, isBaseSlab ? "BASESLAB" : "FLOOR");
break;
}
for (int ii = 0; ii < numReps; ii++)
{
string ifcName = NamingUtil.GetNameOverride(floorElement, NamingUtil.GetIFCNamePlusIndex(floorElement, ii == 0 ? -1 : ii + 1));
string ifcDescription = NamingUtil.GetDescriptionOverride(floorElement, null);
string ifcObjectType = NamingUtil.GetObjectTypeOverride(floorElement, exporterIFC.GetFamilyName());
string ifcTag = NamingUtil.GetTagOverride(floorElement, NamingUtil.CreateIFCElementId(floorElement));
string currentGUID = (ii == 0) ? ifcGUID : GUIDUtil.CreateGUID();
IFCAnyHandle localPlacementHnd = exportedAsInternalExtrusion ? localPlacements[ii] : localPlacement;
IFCAnyHandle slabHnd = null;
// TODO: replace with CreateGenericBuildingElement.
switch (exportType)
{
case IFCExportType.IfcFooting:
slabHnd = IFCInstanceExporter.CreateFooting(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
case IFCExportType.IfcCovering:
slabHnd = IFCInstanceExporter.CreateCovering(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
case IFCExportType.IfcRamp:
slabHnd = IFCInstanceExporter.CreateRamp(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
default:
slabHnd = IFCInstanceExporter.CreateSlab(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
}
if (IFCAnyHandleUtil.IsNullOrHasNoValue(slabHnd))
{
return;
}
if (exportParts)
{
PartExporter.ExportHostPart(exporterIFC, floorElement, slabHnd, productWrapper, placementSetter, localPlacementHnd, null);
}
slabHnds.Add(slabHnd);
if (!exportParts)
{
if (repTypes[ii] == ShapeRepresentationType.Brep)
{
brepSlabHnds.Add(slabHnd);
}
else
{
nonBrepSlabHnds.Add(slabHnd);
}
}
}
for (int ii = 0; ii < numReps; ii++)
{
IFCExtrusionCreationData loopExtraParam = ii < loopExtraParams.Count ? loopExtraParams[ii] : null;
productWrapper.AddElement(floorElement, slabHnds[ii], placementSetter, loopExtraParam, true);
}
// This call to the native function appears to create Brep opening also when appropriate. But the creation of the IFC instances is not
// controllable from the managed code. Therefore in some cases BRep geometry for Opening will still be exported even in the Reference View
if (exportedAsInternalExtrusion)
{
ExporterIFCUtils.ExportExtrudedSlabOpenings(exporterIFC, floorElement, placementSetter.LevelInfo,
localPlacements[0], slabHnds, extrusionLoops, floorPlane, productWrapper.ToNative());
}
}
if (!exportParts)
{
if (nonBrepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement, nonBrepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, false);
}
if (brepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement, brepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, true);
}
}
}
tr.Commit();
return;
}
}
/// <summary>
/// Exports a geometry element to boundary representation.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="element">The element.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="exportBoundaryRep">True if to export boundary representation.</param>
/// <param name="exportAsFacetation">True if to export the geometry as facetation.</param>
/// <param name="bodyRep">Body representation.</param>
/// <param name="boundaryRep">Boundary representation.</param>
/// <returns>True if success, false if fail.</returns>
public static bool ExportSurface(ExporterIFC exporterIFC, Element element, GeometryElement geometryElement,
bool exportBoundaryRep, bool exportAsFacetation, ref IFCAnyHandle bodyRep, ref IFCAnyHandle boundaryRep)
{
if (geometryElement == null)
{
return(false);
}
IFCGeometryInfo ifcGeomInfo = null;
Plane plane = GeometryUtil.CreateDefaultPlane();
XYZ projDir = new XYZ(0, 0, 1);
double eps = element.Document.Application.VertexTolerance * exporterIFC.LinearScale;
ifcGeomInfo = IFCGeometryInfo.CreateFaceGeometryInfo(exporterIFC, plane, projDir, eps, exportBoundaryRep);
ExporterIFCUtils.CollectGeometryInfo(exporterIFC, ifcGeomInfo, geometryElement, XYZ.Zero, true);
IFCFile file = exporterIFC.GetFile();
HashSet <IFCAnyHandle> faceSets = new HashSet <IFCAnyHandle>();
IList <ICollection <IFCAnyHandle> > faceList = ifcGeomInfo.GetFaces();
foreach (ICollection <IFCAnyHandle> faces in faceList)
{
// no faces, don't complain.
if (faces.Count == 0)
{
continue;
}
HashSet <IFCAnyHandle> faceSet = new HashSet <IFCAnyHandle>(faces);
faceSets.Add(IFCInstanceExporter.CreateConnectedFaceSet(file, faceSet));
}
if (faceSets.Count == 0)
{
return(false);
}
IFCAnyHandle surface = IFCInstanceExporter.CreateFaceBasedSurfaceModel(file, faceSets);
IList <IFCAnyHandle> surfaceItems = new List <IFCAnyHandle>();
surfaceItems.Add(surface);
ElementId catId = CategoryUtil.GetSafeCategoryId(element);
bodyRep = RepresentationUtil.CreateSurfaceRep(exporterIFC, element, catId, exporterIFC.Get3DContextHandle("Body"), surfaceItems,
exportAsFacetation, bodyRep);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(bodyRep))
{
return(false);
}
ICollection <IFCAnyHandle> boudaryRepresentations = ifcGeomInfo.GetRepresentations();
if (exportBoundaryRep && boudaryRepresentations.Count > 1)
{
boundaryRep = RepresentationUtil.CreateBoundaryRep(exporterIFC, element, catId, exporterIFC.Get3DContextHandle("Body"), boudaryRepresentations,
boundaryRep);
}
return(true);
}
/// <summary>
/// Exports a geometry element to boundary representation.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="element">The element.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="exportBoundaryRep">True if to export boundary representation.</param>
/// <param name="exportAsFacetation">True if to export the geometry as facetation.</param>
/// <param name="bodyRep">Body representation.</param>
/// <param name="boundaryRep">Boundary representation.</param>
/// <returns>True if success, false if fail.</returns>
public static bool ExportSurface(ExporterIFC exporterIFC, Element element, GeometryElement geometryElement,
bool exportBoundaryRep, bool exportAsFacetation, ref IFCAnyHandle bodyRep, ref IFCAnyHandle boundaryRep)
{
if (geometryElement == null)
{
return(false);
}
IFCGeometryInfo ifcGeomInfo = null;
Document doc = element.Document;
Plane plane = GeometryUtil.CreateDefaultPlane();
XYZ projDir = new XYZ(0, 0, 1);
double eps = UnitUtil.ScaleLength(doc.Application.VertexTolerance);
ifcGeomInfo = IFCGeometryInfo.CreateFaceGeometryInfo(exporterIFC, plane, projDir, eps, exportBoundaryRep);
ExporterIFCUtils.CollectGeometryInfo(exporterIFC, ifcGeomInfo, geometryElement, XYZ.Zero, true);
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle surface;
// Use tessellated geometry for surface in IFC Reference View
if (ExporterUtil.IsReferenceView())
{
BodyExporterOptions options = new BodyExporterOptions(false);
surface = BodyExporter.ExportBodyAsTriangulatedFaceSet(exporterIFC, element, options, geometryElement);
}
else
{
HashSet <IFCAnyHandle> faceSets = new HashSet <IFCAnyHandle>();
IList <ICollection <IFCAnyHandle> > faceList = ifcGeomInfo.GetFaces();
foreach (ICollection <IFCAnyHandle> faces in faceList)
{
// no faces, don't complain.
if (faces.Count == 0)
{
continue;
}
HashSet <IFCAnyHandle> faceSet = new HashSet <IFCAnyHandle>(faces);
faceSets.Add(IFCInstanceExporter.CreateConnectedFaceSet(file, faceSet));
}
if (faceSets.Count == 0)
{
return(false);
}
surface = IFCInstanceExporter.CreateFaceBasedSurfaceModel(file, faceSets);
}
if (IFCAnyHandleUtil.IsNullOrHasNoValue(surface))
{
return(false);
}
BodyExporter.CreateSurfaceStyleForRepItem(exporterIFC, doc, surface, BodyExporter.GetBestMaterialIdFromGeometryOrParameter(geometryElement, exporterIFC, element));
ISet <IFCAnyHandle> surfaceItems = new HashSet <IFCAnyHandle>();
surfaceItems.Add(surface);
ElementId catId = CategoryUtil.GetSafeCategoryId(element);
bodyRep = RepresentationUtil.CreateSurfaceRep(exporterIFC, element, catId, exporterIFC.Get3DContextHandle("Body"), surfaceItems,
exportAsFacetation, bodyRep);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(bodyRep))
{
return(false);
}
ICollection <IFCAnyHandle> boundaryRepresentations = ifcGeomInfo.GetRepresentations();
if (exportBoundaryRep && boundaryRepresentations.Count > 0)
{
HashSet <IFCAnyHandle> boundaryRepresentationSet = new HashSet <IFCAnyHandle>();
boundaryRepresentationSet.UnionWith(boundaryRepresentations);
boundaryRep = RepresentationUtil.CreateBoundaryRep(exporterIFC, element, catId, exporterIFC.Get3DContextHandle("FootPrint"), boundaryRepresentationSet,
boundaryRep);
}
return(true);
}
/// <summary>
/// Exports a floor to IFC slab.
/// </summary>
/// <param name="exporterIFC">
/// The ExporterIFC object.
/// </param>
/// <param name="floor">
/// The floor element.
/// </param>
/// <param name="geometryElement">
/// The geometry element.
/// </param>
/// <param name="ifcEnumType">
/// The string value represents the IFC type.
/// </param>
/// <param name="productWrapper">
/// The ProductWrapper.
/// </param>
/// <param name="exportParts">
/// Whether to export parts or not.
/// </param>
/// <returns>
/// True if the floor is exported successfully, false otherwise.
/// </returns>
public static void ExportFloor(ExporterIFC exporterIFC, Element floorElement, GeometryElement geometryElement, string ifcEnumType,
ProductWrapper productWrapper, bool exportParts)
{
if (geometryElement == null)
{
return;
}
IFCFile file = exporterIFC.GetFile();
IList <IFCAnyHandle> slabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> brepSlabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> nonBrepSlabHnds = new List <IFCAnyHandle>();
using (IFCTransaction tr = new IFCTransaction(file))
{
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
using (IFCPlacementSetter placementSetter = IFCPlacementSetter.Create(exporterIFC, floorElement, null, null, ExporterUtil.GetBaseLevelIdForElement(floorElement)))
{
IFCAnyHandle localPlacement = placementSetter.GetPlacement();
IFCAnyHandle ownerHistory = exporterIFC.GetOwnerHistoryHandle();
bool exportedAsInternalExtrusion = false;
double scale = exporterIFC.LinearScale;
ElementId catId = CategoryUtil.GetSafeCategoryId(floorElement);
IList <IFCAnyHandle> prodReps = new List <IFCAnyHandle>();
IList <ShapeRepresentationType> repTypes = new List <ShapeRepresentationType>();
IList <IList <CurveLoop> > extrusionLoops = new List <IList <CurveLoop> >();
IList <IFCExtrusionCreationData> loopExtraParams = new List <IFCExtrusionCreationData>();
Plane floorPlane = GeometryUtil.CreateDefaultPlane();
IList <IFCAnyHandle> localPlacements = new List <IFCAnyHandle>();
if (!exportParts)
{
// First, try to use the ExtrusionAnalyzer for the limited cases it handles - 1 solid, no openings, end clippings only.
// Also limited to cases with line and arc boundaries.
//
if (floorElement is Floor)
{
Floor floor = floorElement as Floor;
SolidMeshGeometryInfo solidMeshInfo = GeometryUtil.GetSplitSolidMeshGeometry(geometryElement);
IList <Solid> solids = solidMeshInfo.GetSolids();
IList <Mesh> meshes = solidMeshInfo.GetMeshes();
if (solids.Count == 1 && meshes.Count == 0)
{
bool completelyClipped;
XYZ floorExtrusionDirection = new XYZ(0, 0, -1);
XYZ modelOrigin = XYZ.Zero;
XYZ floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
if (floorOrigin == null)
{
// GetVerticalProjectionPoint may return null if FloorFace.Top is an edited face that doesn't
// go thruough te Revit model orgigin. We'll try the midpoint of the bounding box instead.
BoundingBoxXYZ boundingBox = floor.get_BoundingBox(null);
modelOrigin = (boundingBox.Min + boundingBox.Max) / 2.0;
floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
}
if (floorOrigin != null)
{
XYZ floorDir = floor.GetNormalAtVerticalProjectionPoint(floorOrigin, FloorFace.Top);
Plane extrusionAnalyzerFloorPlane = new Plane(floorDir, floorOrigin);
HandleAndData floorAndProperties =
ExtrusionExporter.CreateExtrusionWithClippingAndProperties(exporterIFC, floor,
catId, solids[0], extrusionAnalyzerFloorPlane, floorExtrusionDirection, null, out completelyClipped);
if (completelyClipped)
{
return;
}
if (floorAndProperties.Handle != null)
{
IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();
representations.Add(floorAndProperties.Handle);
IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);
prodReps.Add(prodRep);
repTypes.Add(ShapeRepresentationType.SweptSolid);
if (floorAndProperties.Data != null)
{
loopExtraParams.Add(floorAndProperties.Data);
}
}
}
}
}
// Use internal routine as backup that handles openings.
if (prodReps.Count == 0)
{
exportedAsInternalExtrusion = ExporterIFCUtils.ExportSlabAsExtrusion(exporterIFC, floorElement,
geometryElement, transformSetter, localPlacement, out localPlacements, out prodReps,
out extrusionLoops, out loopExtraParams, floorPlane);
for (int ii = 0; ii < prodReps.Count; ii++)
{
// all are extrusions
repTypes.Add(ShapeRepresentationType.SweptSolid);
}
}
if (prodReps.Count == 0)
{
using (IFCExtrusionCreationData ecData = new IFCExtrusionCreationData())
{
BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true);
bodyExporterOptions.TessellationLevel = BodyExporter.GetTessellationLevel();
BodyData bodyData;
IFCAnyHandle prodDefHnd = RepresentationUtil.CreateAppropriateProductDefinitionShape(exporterIFC,
floorElement, catId, geometryElement, bodyExporterOptions, null, ecData, out bodyData);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(prodDefHnd))
{
ecData.ClearOpenings();
return;
}
prodReps.Add(prodDefHnd);
repTypes.Add(bodyData.ShapeRepresentationType);
}
}
}
// Create the slab from either the extrusion or the BRep information.
string ifcGUID = GUIDUtil.CreateGUID(floorElement);
int numReps = exportParts ? 1 : prodReps.Count;
// Allow export as IfcSlab or IfcFooting. Ignore altIfcEnumType value; use value passed in.
string altIfcEnumType;
IFCExportType exportAs = ExporterUtil.GetExportType(exporterIFC, floorElement, out altIfcEnumType);
bool exportAsFooting = (exportAs == IFCExportType.ExportFooting);
IFCFootingType?footingType = null;
IFCSlabType? slabType = null;
if (exportAsFooting)
{
footingType = FootingExporter.GetIFCFootingType(ifcEnumType);
}
else
{
slabType = GetIFCSlabType(ifcEnumType);
}
for (int ii = 0; ii < numReps; ii++)
{
string ifcName = NamingUtil.GetNameOverride(floorElement, NamingUtil.GetIFCNamePlusIndex(floorElement, ii == 0 ? -1 : ii + 1));
string ifcDescription = NamingUtil.GetDescriptionOverride(floorElement, null);
string ifcObjectType = NamingUtil.GetObjectTypeOverride(floorElement, exporterIFC.GetFamilyName());
string ifcTag = NamingUtil.GetTagOverride(floorElement, NamingUtil.CreateIFCElementId(floorElement));
string currentGUID = (ii == 0) ? ifcGUID : GUIDUtil.CreateGUID();
IFCAnyHandle localPlacementHnd = exportedAsInternalExtrusion ? localPlacements[ii] : localPlacement;
IFCAnyHandle slabHnd = null;
if (exportAsFooting)
{
slabHnd = IFCInstanceExporter.CreateFooting(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, footingType.Value);
}
else
{
slabHnd = IFCInstanceExporter.CreateSlab(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, slabType.Value);
}
if (IFCAnyHandleUtil.IsNullOrHasNoValue(slabHnd))
{
return;
}
if (exportParts)
{
PartExporter.ExportHostPart(exporterIFC, floorElement, slabHnd, productWrapper, placementSetter, localPlacementHnd, null);
}
slabHnds.Add(slabHnd);
if (!exportParts)
{
if (repTypes[ii] == ShapeRepresentationType.Brep)
{
brepSlabHnds.Add(slabHnd);
}
else
{
nonBrepSlabHnds.Add(slabHnd);
}
}
}
for (int ii = 0; ii < numReps; ii++)
{
IFCExtrusionCreationData loopExtraParam = ii < loopExtraParams.Count ? loopExtraParams[ii] : null;
productWrapper.AddElement(floorElement, slabHnds[ii], placementSetter, loopExtraParam, true);
}
if (exportedAsInternalExtrusion)
{
ExporterIFCUtils.ExportExtrudedSlabOpenings(exporterIFC, floorElement, placementSetter,
localPlacements[0], slabHnds, extrusionLoops, floorPlane, productWrapper.ToNative());
}
}
if (!exportParts)
{
if (floorElement is HostObject)
{
HostObject hostObject = floorElement as HostObject;
if (nonBrepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, hostObject, nonBrepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, false);
}
if (brepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, hostObject, brepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, true);
}
}
else if (floorElement is FamilyInstance && slabHnds.Count > 0)
{
ElementId matId = BodyExporter.GetBestMaterialIdFromGeometryOrParameter(geometryElement, exporterIFC, floorElement);
Document doc = floorElement.Document;
foreach (IFCAnyHandle slabHnd in slabHnds)
{
CategoryUtil.CreateMaterialAssociation(exporterIFC, slabHnd, matId);
}
}
}
}
tr.Commit();
return;
}
}
/// <summary>
/// Exports a floor to IFC slab.
/// </summary>
/// <param name="exporterIFC">
/// The ExporterIFC object.
/// </param>
/// <param name="floor">
/// The floor element.
/// </param>
/// <param name="geometryElement">
/// The geometry element.
/// </param>
/// <param name="ifcEnumType">
/// The string value represents the IFC type.
/// </param>
/// <param name="productWrapper">
/// The IFCProductWrapper.
/// </param>
/// <param name="exportParts">
/// Whether to export parts or not.
/// </param>
/// <returns>
/// True if the floor is exported successfully, false otherwise.
/// </returns>
public static void ExportFloor(ExporterIFC exporterIFC, Element floorElement, GeometryElement geometryElement, string ifcEnumType,
IFCProductWrapper productWrapper, bool exportParts)
{
if (geometryElement == null)
{
return;
}
IFCFile file = exporterIFC.GetFile();
IList <IFCAnyHandle> slabHnds = new List <IFCAnyHandle>();
using (IFCTransaction tr = new IFCTransaction(file))
{
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
using (IFCPlacementSetter placementSetter = IFCPlacementSetter.Create(exporterIFC, floorElement))
{
IFCAnyHandle localPlacement = placementSetter.GetPlacement();
IFCAnyHandle ownerHistory = exporterIFC.GetOwnerHistoryHandle();
bool exportedAsInternalExtrusion = false;
double scale = exporterIFC.LinearScale;
ElementId catId = CategoryUtil.GetSafeCategoryId(floorElement);
IList <IFCAnyHandle> reps = new List <IFCAnyHandle>();
IList <IList <CurveLoop> > extrusionLoops = new List <IList <CurveLoop> >();
IList <IFCExtrusionCreationData> loopExtraParams = new List <IFCExtrusionCreationData>();
Plane floorPlane = GeometryUtil.CreateDefaultPlane();
IList <IFCAnyHandle> localPlacements = new List <IFCAnyHandle>();
if (!exportParts)
{
// First, try to use the ExtrusionAnalyzer for the limited cases it handles - 1 solid, no openings, end clippings only.
// Also limited to cases with line and arc boundaries.
//
if (floorElement is Floor)
{
Floor floor = floorElement as Floor;
SolidMeshGeometryInfo solidMeshInfo = GeometryUtil.GetSolidMeshGeometry(geometryElement, Transform.Identity);
IList <Solid> solids = solidMeshInfo.GetSolids();
IList <Mesh> meshes = solidMeshInfo.GetMeshes();
if (solids.Count == 1 && meshes.Count == 0)
{
IList <Solid> splitVolumes = SolidUtils.SplitVolumes(solids[0]);
if (splitVolumes.Count == 1)
{
bool completelyClipped;
XYZ floorExtrusionDirection = new XYZ(0, 0, -1);
XYZ modelOrigin = XYZ.Zero;
XYZ floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
if (floorOrigin == null)
{
// GetVerticalProjectionPoint may return null if FloorFace.Top is an edited face that doesn't
// go thruough te Revit model orgigin. We'll try the midpoint of the bounding box instead.
BoundingBoxXYZ boundingBox = floor.get_BoundingBox(null);
modelOrigin = (boundingBox.Min + boundingBox.Max) / 2.0;
floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
}
if (floorOrigin != null)
{
XYZ floorDir = floor.GetNormalAtVerticalProjectionPoint(floorOrigin, FloorFace.Top);
Plane extrusionAnalyzerFloorPlane = new Plane(floorDir, floorOrigin);
HandleAndData floorAndProperties =
ExtrusionExporter.CreateExtrusionWithClippingAndProperties(exporterIFC, floor,
catId, solids[0], extrusionAnalyzerFloorPlane, floorExtrusionDirection, null, out completelyClipped);
if (completelyClipped)
{
return;
}
if (floorAndProperties.Handle != null)
{
IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();
representations.Add(floorAndProperties.Handle);
IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);
reps.Add(prodRep);
if (floorAndProperties.Data != null)
{
loopExtraParams.Add(floorAndProperties.Data);
}
}
}
}
}
}
// Use internal routine as backup that handles openings.
if (reps.Count == 0)
{
exportedAsInternalExtrusion = ExporterIFCUtils.ExportSlabAsExtrusion(exporterIFC, floorElement,
geometryElement, transformSetter, localPlacement, out localPlacements, out reps,
out extrusionLoops, out loopExtraParams, floorPlane);
}
if (reps.Count == 0)
{
using (IFCExtrusionCreationData ecData = new IFCExtrusionCreationData())
{
BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true);
bodyExporterOptions.TessellationLevel = BodyExporterOptions.BodyTessellationLevel.Coarse;
IFCAnyHandle prodDefHnd = RepresentationUtil.CreateBRepProductDefinitionShape(floorElement.Document.Application, exporterIFC,
floorElement, catId, geometryElement, bodyExporterOptions, null, ecData);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(prodDefHnd))
{
ecData.ClearOpenings();
return;
}
reps.Add(prodDefHnd);
}
}
}
// Create the slab from either the extrusion or the BRep information.
string ifcGUID = ExporterIFCUtils.CreateGUID(floorElement);
int numReps = exportParts ? 1 : reps.Count;
for (int ii = 0; ii < numReps; ii++)
{
string ifcName = NamingUtil.GetNameOverride(floorElement, NamingUtil.CreateIFCName(exporterIFC, ii == 0 ? -1 : ii + 1));
string ifcDescription = NamingUtil.GetDescriptionOverride(floorElement, null);
string ifcObjectType = NamingUtil.GetObjectTypeOverride(floorElement, exporterIFC.GetFamilyName());
string ifcElemId = NamingUtil.CreateIFCElementId(floorElement);
string currentGUID = (ii == 0) ? ifcGUID : ExporterIFCUtils.CreateGUID();
IFCAnyHandle localPlacementHnd = exportedAsInternalExtrusion ? localPlacements[ii] : localPlacement;
IFCSlabType slabType = GetIFCSlabType(ifcEnumType);
IFCAnyHandle slabHnd = IFCInstanceExporter.CreateSlab(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : reps[ii], ifcElemId, slabType);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(slabHnd))
{
return;
}
if (exportParts)
{
PartExporter.ExportHostPart(exporterIFC, floorElement, slabHnd, productWrapper, placementSetter, localPlacementHnd, null);
}
slabHnds.Add(slabHnd);
}
bool associateElementToLevel = LevelUtil.AssociateElementToLevel(floorElement);
for (int ii = 0; ii < numReps; ii++)
{
IFCExtrusionCreationData loopExtraParam = ii < loopExtraParams.Count ? loopExtraParams[ii] : null;
productWrapper.AddElement(slabHnds[ii], placementSetter, loopExtraParam, associateElementToLevel);
}
if (exportedAsInternalExtrusion)
{
ExporterIFCUtils.ExportExtrudedSlabOpenings(exporterIFC, floorElement, placementSetter,
localPlacements[0], slabHnds, extrusionLoops, floorPlane, productWrapper);
}
PropertyUtil.CreateInternalRevitPropertySets(exporterIFC, floorElement, productWrapper);
}
if (!exportParts)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement as HostObject, slabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3);
}
}
tr.Commit();
return;
}
}
/// <summary>
/// Exports a generic element as an IfcSlab.</summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="floor">The floor element.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="ifcEnumType">The string value represents the IFC type.</param>
/// <param name="productWrapper">The ProductWrapper.</param>
/// <returns>True if the floor is exported successfully, false otherwise.</returns>
public static void ExportGenericSlab(ExporterIFC exporterIFC, Element slabElement, GeometryElement geometryElement, string ifcEnumType,
ProductWrapper productWrapper)
{
if (geometryElement == null)
{
return;
}
bool exportParts = PartExporter.CanExportParts(slabElement);
IFCFile file = exporterIFC.GetFile();
IList <IFCAnyHandle> slabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> brepSlabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> nonBrepSlabHnds = new List <IFCAnyHandle>();
using (IFCTransaction tr = new IFCTransaction(file))
{
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
using (PlacementSetter placementSetter = PlacementSetter.Create(exporterIFC, slabElement))
{
IFCAnyHandle localPlacement = placementSetter.LocalPlacement;
IFCAnyHandle ownerHistory = exporterIFC.GetOwnerHistoryHandle();
bool exportedAsInternalExtrusion = false;
ElementId catId = CategoryUtil.GetSafeCategoryId(slabElement);
IList <IFCAnyHandle> prodReps = new List <IFCAnyHandle>();
IList <ShapeRepresentationType> repTypes = new List <ShapeRepresentationType>();
IList <IList <CurveLoop> > extrusionLoops = new List <IList <CurveLoop> >();
IList <IFCExtrusionCreationData> loopExtraParams = new List <IFCExtrusionCreationData>();
Plane floorPlane = GeometryUtil.CreateDefaultPlane();
IList <IFCAnyHandle> localPlacements = new List <IFCAnyHandle>();
using (IFCExtrusionCreationData ecData = new IFCExtrusionCreationData())
{
BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true);
bodyExporterOptions.TessellationLevel = BodyExporter.GetTessellationLevel();
BodyData bodyData;
IFCAnyHandle prodDefHnd = RepresentationUtil.CreateAppropriateProductDefinitionShape(exporterIFC,
slabElement, catId, geometryElement, bodyExporterOptions, null, ecData, out bodyData);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(prodDefHnd))
{
ecData.ClearOpenings();
return;
}
prodReps.Add(prodDefHnd);
repTypes.Add(bodyData.ShapeRepresentationType);
}
// Create the slab from either the extrusion or the BRep information.
string ifcGUID = GUIDUtil.CreateGUID(slabElement);
int numReps = exportParts ? 1 : prodReps.Count;
string entityType = IFCValidateEntry.GetValidIFCType <IFCSlabType>(slabElement, ifcEnumType, "FLOOR");
for (int ii = 0; ii < numReps; ii++)
{
string ifcName = NamingUtil.GetNameOverride(slabElement, NamingUtil.GetIFCNamePlusIndex(slabElement, ii == 0 ? -1 : ii + 1));
string ifcDescription = NamingUtil.GetDescriptionOverride(slabElement, null);
string ifcObjectType = NamingUtil.GetObjectTypeOverride(slabElement, exporterIFC.GetFamilyName());
string ifcTag = NamingUtil.GetTagOverride(slabElement, NamingUtil.CreateIFCElementId(slabElement));
string currentGUID = (ii == 0) ? ifcGUID : GUIDUtil.CreateGUID();
IFCAnyHandle localPlacementHnd = exportedAsInternalExtrusion ? localPlacements[ii] : localPlacement;
IFCAnyHandle slabHnd = IFCInstanceExporter.CreateSlab(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(slabHnd))
{
return;
}
if (exportParts)
{
PartExporter.ExportHostPart(exporterIFC, slabElement, slabHnd, productWrapper, placementSetter, localPlacementHnd, null);
}
slabHnds.Add(slabHnd);
if (!exportParts)
{
if (repTypes[ii] == ShapeRepresentationType.Brep)
{
brepSlabHnds.Add(slabHnd);
}
else
{
nonBrepSlabHnds.Add(slabHnd);
}
}
}
for (int ii = 0; ii < numReps; ii++)
{
IFCExtrusionCreationData loopExtraParam = ii < loopExtraParams.Count ? loopExtraParams[ii] : null;
productWrapper.AddElement(slabElement, slabHnds[ii], placementSetter, loopExtraParam, true);
}
if (exportedAsInternalExtrusion)
{
ExporterIFCUtils.ExportExtrudedSlabOpenings(exporterIFC, slabElement, placementSetter.LevelInfo,
localPlacements[0], slabHnds, extrusionLoops, floorPlane, productWrapper.ToNative());
}
}
if (!exportParts)
{
if (slabElement is HostObject)
{
HostObject hostObject = slabElement as HostObject;
if (nonBrepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, hostObject, nonBrepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, false);
}
if (brepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, hostObject, brepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, true);
}
}
else if (slabElement is FamilyInstance && slabHnds.Count > 0)
{
ElementId matId = BodyExporter.GetBestMaterialIdFromGeometryOrParameter(geometryElement, exporterIFC, slabElement);
Document doc = slabElement.Document;
foreach (IFCAnyHandle slabHnd in slabHnds)
{
CategoryUtil.CreateMaterialAssociation(exporterIFC, slabHnd, matId);
}
}
}
}
tr.Commit();
return;
}
}
/// <summary>
/// Exports a CeilingAndFloor element to IFC.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="floor">The floor element.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="productWrapper">The ProductWrapper.</param>
public static void ExportCeilingAndFloorElement(ExporterIFC exporterIFC, CeilingAndFloor floorElement, GeometryElement geometryElement,
ProductWrapper productWrapper)
{
if (geometryElement == null)
{
return;
}
// export parts or not
bool exportParts = PartExporter.CanExportParts(floorElement);
if (exportParts && !PartExporter.CanExportElementInPartExport(floorElement, floorElement.LevelId, false))
{
return;
}
IFCFile file = exporterIFC.GetFile();
string ifcEnumType;
IFCExportType exportType = ExporterUtil.GetExportType(exporterIFC, floorElement, out ifcEnumType);
// Check the intended IFC entity or type name is in the exclude list specified in the UI
Common.Enums.IFCEntityType elementClassTypeEnum;
if (Enum.TryParse <Common.Enums.IFCEntityType>(exportType.ToString(), out elementClassTypeEnum))
{
if (ExporterCacheManager.ExportOptionsCache.IsElementInExcludeList(elementClassTypeEnum))
{
return;
}
}
using (IFCTransaction tr = new IFCTransaction(file))
{
bool canExportAsContainerOrWithExtrusionAnalyzer = (!exportParts && (floorElement is Floor));
if (canExportAsContainerOrWithExtrusionAnalyzer)
{
// Try to export the Floor slab as a container. If that succeeds, we are done.
// If we do export the floor as a container, it will take care of the local placement and transform there, so we need to leave
// this out of the IFCTransformSetter and PlacementSetter scopes below, or else we'll get double transforms.
IFCAnyHandle floorHnd = RoofExporter.ExportRoofOrFloorAsContainer(exporterIFC, ifcEnumType, floorElement, geometryElement, productWrapper);
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(floorHnd))
{
tr.Commit();
return;
}
}
IList <IFCAnyHandle> slabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> brepSlabHnds = new List <IFCAnyHandle>();
IList <IFCAnyHandle> nonBrepSlabHnds = new List <IFCAnyHandle>();
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
using (PlacementSetter placementSetter = PlacementSetter.Create(exporterIFC, floorElement))
{
IFCAnyHandle localPlacement = placementSetter.LocalPlacement;
IFCAnyHandle ownerHistory = ExporterCacheManager.OwnerHistoryHandle;
// The routine ExportExtrudedSlabOpenings is called if exportedAsInternalExtrusion is true, and it requires having a valid level association.
// Disable calling ExportSlabAsExtrusion if we can't handle potential openings.
bool canExportAsInternalExtrusion = placementSetter.LevelInfo != null;
bool exportedAsInternalExtrusion = false;
ElementId catId = CategoryUtil.GetSafeCategoryId(floorElement);
IList <IFCAnyHandle> prodReps = new List <IFCAnyHandle>();
IList <ShapeRepresentationType> repTypes = new List <ShapeRepresentationType>();
IList <IList <CurveLoop> > extrusionLoops = new List <IList <CurveLoop> >();
IList <IFCExtrusionCreationData> loopExtraParams = new List <IFCExtrusionCreationData>();
Plane floorPlane = GeometryUtil.CreateDefaultPlane();
IList <IFCAnyHandle> localPlacements = new List <IFCAnyHandle>();
if (canExportAsContainerOrWithExtrusionAnalyzer)
{
Floor floor = floorElement as Floor;
// Next, try to use the ExtrusionAnalyzer for the limited cases it handles - 1 solid, no openings, end clippings only.
// Also limited to cases with line and arc boundaries.
//
SolidMeshGeometryInfo solidMeshInfo = GeometryUtil.GetSplitSolidMeshGeometry(geometryElement);
IList <Solid> solids = solidMeshInfo.GetSolids();
IList <Mesh> meshes = solidMeshInfo.GetMeshes();
if (solids.Count == 1 && meshes.Count == 0)
{
bool completelyClipped;
// floorExtrusionDirection is set to (0, 0, -1) because extrusionAnalyzerFloorPlane is computed from the top face of the floor
XYZ floorExtrusionDirection = new XYZ(0, 0, -1);
XYZ modelOrigin = XYZ.Zero;
XYZ floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
if (floorOrigin == null)
{
// GetVerticalProjectionPoint may return null if FloorFace.Top is an edited face that doesn't
// go through the Revit model origin. We'll try the midpoint of the bounding box instead.
BoundingBoxXYZ boundingBox = floorElement.get_BoundingBox(null);
modelOrigin = (boundingBox.Min + boundingBox.Max) / 2.0;
floorOrigin = floor.GetVerticalProjectionPoint(modelOrigin, FloorFace.Top);
}
if (floorOrigin != null)
{
XYZ floorDir = floor.GetNormalAtVerticalProjectionPoint(floorOrigin, FloorFace.Top);
Plane extrusionAnalyzerFloorBasePlane = GeometryUtil.CreatePlaneByNormalAtOrigin(floorDir);
GenerateAdditionalInfo additionalInfo = ExporterCacheManager.ExportOptionsCache.ExportAs4 ? GenerateAdditionalInfo.GenerateFootprint : GenerateAdditionalInfo.None;
HandleAndData floorAndProperties =
ExtrusionExporter.CreateExtrusionWithClippingAndProperties(exporterIFC, floorElement,
catId, solids[0], extrusionAnalyzerFloorBasePlane, floorOrigin, floorExtrusionDirection, null, out completelyClipped,
addInfo: additionalInfo);
if (completelyClipped)
{
return;
}
if (floorAndProperties.Handle != null)
{
IList <IFCAnyHandle> representations = new List <IFCAnyHandle>();
representations.Add(floorAndProperties.Handle);
// Footprint representation will only be exported in export to IFC4
if (((additionalInfo & GenerateAdditionalInfo.GenerateFootprint) != 0) && (floorAndProperties.FootprintInfo != null))
{
if (!(IFCAnyHandleUtil.IsNullOrHasNoValue(floorAndProperties.FootprintInfo.FootPrintHandle)))
{
representations.Add(floorAndProperties.FootprintInfo.FootPrintHandle);
}
}
IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);
prodReps.Add(prodRep);
repTypes.Add(ShapeRepresentationType.SweptSolid);
if (floorAndProperties.Data != null)
{
loopExtraParams.Add(floorAndProperties.Data);
}
}
}
}
}
// Use internal routine as backup that handles openings.
if (prodReps.Count == 0 && canExportAsInternalExtrusion)
{
//IList<IFCAnyHandle> prodRepsTmp = new List<IFCAnyHandle>();
exportedAsInternalExtrusion = ExporterIFCUtils.ExportSlabAsExtrusion(exporterIFC, floorElement,
geometryElement, transformSetter, localPlacement, out localPlacements, out prodReps,
out extrusionLoops, out loopExtraParams, floorPlane);
for (int ii = 0; ii < prodReps.Count; ii++)
{
// all are extrusions
repTypes.Add(ShapeRepresentationType.SweptSolid);
// Footprint representation will only be exported in export to IFC4
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
// Get back the representations, we need to add the Footprint to it
//IList<IFCAnyHandle> representations = IFCAnyHandleUtil.GetRepresentations(prodRepsTmp[ii]);
if (extrusionLoops.Count > ii)
{
if (extrusionLoops[ii].Count > 0)
{
// Get the extrusion footprint using the first Curveloop. Transform needs to be obtained from the returned local placement
Transform lcs = ExporterIFCUtils.GetUnscaledTransform(exporterIFC, localPlacements[ii]);
IFCAnyHandle footprintGeomRepItem = GeometryUtil.CreateIFCCurveFromCurveLoop(exporterIFC, extrusionLoops[ii][0], lcs, floorPlane.Normal);
IFCAnyHandle contextOfItemsFootprint = exporterIFC.Get3DContextHandle("FootPrint");
ISet <IFCAnyHandle> repItem = new HashSet <IFCAnyHandle>();
repItem.Add(footprintGeomRepItem);
IFCAnyHandle footprintShapeRepresentation = RepresentationUtil.CreateBaseShapeRepresentation(exporterIFC, contextOfItemsFootprint, "FootPrint", "Curve2D", repItem);
//representations.Add(footprintShapeRepresentation);
IList <IFCAnyHandle> reps = new List <IFCAnyHandle>();
reps.Add(footprintShapeRepresentation);
IFCAnyHandleUtil.AddRepresentations(prodReps[ii], reps);
}
}
//IFCAnyHandle prodRep = IFCInstanceExporter.CreateProductDefinitionShape(file, null, null, representations);
//prodReps.Add(prodRep);
}
else
{
//prodReps.Add(prodRepsTmp[ii]);
}
// We do not need the prodRepsTmp anymore, delete the handle:
//prodRepsTmp[ii].Delete();
}
}
if (prodReps.Count == 0)
{
using (IFCExtrusionCreationData ecData = new IFCExtrusionCreationData())
{
// Brep representation using tesellation after ExportSlabAsExtrusion does not return prodReps
BodyExporterOptions bodyExporterOptions = new BodyExporterOptions(true, ExportOptionsCache.ExportTessellationLevel.Medium);
BodyData bodyData;
IFCAnyHandle prodDefHnd = RepresentationUtil.CreateAppropriateProductDefinitionShape(exporterIFC,
floorElement, catId, geometryElement, bodyExporterOptions, null, ecData, out bodyData);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(prodDefHnd))
{
ecData.ClearOpenings();
return;
}
prodReps.Add(prodDefHnd);
repTypes.Add(bodyData.ShapeRepresentationType);
}
}
// Create the slab from either the extrusion or the BRep information.
string ifcGUID = GUIDUtil.CreateGUID(floorElement);
int numReps = exportParts ? 1 : prodReps.Count;
string entityType = null;
switch (exportType)
{
case IFCExportType.IfcFooting:
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
entityType = IFCValidateEntry.GetValidIFCType <Revit.IFC.Export.Toolkit.IFC4.IFCFootingType>(floorElement, ifcEnumType, null);
}
else
{
entityType = IFCValidateEntry.GetValidIFCType <IFCFootingType>(floorElement, ifcEnumType, null);
}
break;
case IFCExportType.IfcCovering:
entityType = IFCValidateEntry.GetValidIFCType <IFCCoveringType>(floorElement, ifcEnumType, "FLOORING");
break;
case IFCExportType.IfcRamp:
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
entityType = IFCValidateEntry.GetValidIFCType <Revit.IFC.Export.Toolkit.IFC4.IFCRampType>(floorElement, ifcEnumType, null);
}
else
{
entityType = IFCValidateEntry.GetValidIFCType <IFCRampType>(floorElement, ifcEnumType, null);
}
break;
default:
bool isBaseSlab = false;
AnalyticalModel analyticalModel = floorElement.GetAnalyticalModel();
if (analyticalModel != null)
{
AnalyzeAs slabFoundationType = analyticalModel.GetAnalyzeAs();
isBaseSlab = (slabFoundationType == AnalyzeAs.SlabOnGrade) || (slabFoundationType == AnalyzeAs.Mat);
}
entityType = IFCValidateEntry.GetValidIFCType <IFCSlabType>(floorElement, ifcEnumType, isBaseSlab ? "BASESLAB" : "FLOOR");
break;
}
for (int ii = 0; ii < numReps; ii++)
{
string ifcName = NamingUtil.GetNameOverride(floorElement, NamingUtil.GetIFCNamePlusIndex(floorElement, ii == 0 ? -1 : ii + 1));
string ifcDescription = NamingUtil.GetDescriptionOverride(floorElement, null);
string ifcObjectType = NamingUtil.GetObjectTypeOverride(floorElement, exporterIFC.GetFamilyName());
string ifcTag = NamingUtil.GetTagOverride(floorElement, NamingUtil.CreateIFCElementId(floorElement));
string currentGUID = (ii == 0) ? ifcGUID : GUIDUtil.CreateGUID();
IFCAnyHandle localPlacementHnd = exportedAsInternalExtrusion ? localPlacements[ii] : localPlacement;
IFCAnyHandle slabHnd = null;
// TODO: replace with CreateGenericBuildingElement.
switch (exportType)
{
case IFCExportType.IfcFooting:
slabHnd = IFCInstanceExporter.CreateFooting(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
case IFCExportType.IfcCovering:
slabHnd = IFCInstanceExporter.CreateCovering(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
case IFCExportType.IfcRamp:
slabHnd = IFCInstanceExporter.CreateRamp(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
default:
//if ((canExportAsInternalExtrusion || exportedAsInternalExtrusion) && ExporterCacheManager.ExportOptionsCache.ExportAs4)
//{
// slabHnd = IFCInstanceExporter.CreateSlabStandardCase(file, currentGUID, ownerHistory, ifcName,
// ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
// ifcTag, entityType);
//}
//else
slabHnd = IFCInstanceExporter.CreateSlab(file, currentGUID, ownerHistory, ifcName,
ifcDescription, ifcObjectType, localPlacementHnd, exportParts ? null : prodReps[ii],
ifcTag, entityType);
break;
}
if (IFCAnyHandleUtil.IsNullOrHasNoValue(slabHnd))
{
return;
}
if (exportParts)
{
PartExporter.ExportHostPart(exporterIFC, floorElement, slabHnd, productWrapper, placementSetter, localPlacementHnd, null);
}
slabHnds.Add(slabHnd);
if (!exportParts)
{
if (repTypes[ii] == ShapeRepresentationType.Brep)
{
brepSlabHnds.Add(slabHnd);
}
else
{
nonBrepSlabHnds.Add(slabHnd);
}
}
}
for (int ii = 0; ii < numReps; ii++)
{
IFCExtrusionCreationData loopExtraParam = ii < loopExtraParams.Count ? loopExtraParams[ii] : null;
productWrapper.AddElement(floorElement, slabHnds[ii], placementSetter, loopExtraParam, true);
}
// This call to the native function appears to create Brep opening also when appropriate. But the creation of the IFC instances is not
// controllable from the managed code. Therefore in some cases BRep geometry for Opening will still be exported even in the Reference View
if (exportedAsInternalExtrusion)
{
ExporterIFCUtils.ExportExtrudedSlabOpenings(exporterIFC, floorElement, placementSetter.LevelInfo,
localPlacements[0], slabHnds, extrusionLoops, floorPlane, productWrapper.ToNative());
}
//// For now we have to be content without IfcOpeningStandardCase from the openings created by this native call because it is too much to
//// "reverse engineer" the IFChandle
//foreach (IFCAnyHandle slabHandle in slabHnds)
//{
// updateOpeningProfileRep(exporterIFC, slabHandle);
//}
}
if (!exportParts)
{
if (nonBrepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement, nonBrepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, false);
}
if (brepSlabHnds.Count > 0)
{
HostObjectExporter.ExportHostObjectMaterials(exporterIFC, floorElement, brepSlabHnds,
geometryElement, productWrapper, ElementId.InvalidElementId, Toolkit.IFCLayerSetDirection.Axis3, true);
}
}
}
tr.Commit();
return;
}
}
/// <summary>
/// Exports a geometry element to boundary representation.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="element">The element.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="exportBoundaryRep">True if to export boundary representation.</param>
/// <param name="exportAsFacetation">True if to export the geometry as facetation.</param>
/// <param name="bodyRep">Body representation.</param>
/// <param name="boundaryRep">Boundary representation.</param>
/// <returns>True if success, false if fail.</returns>
public static bool ExportSurface(ExporterIFC exporterIFC, Element element, GeometryElement geometryElement,
bool exportBoundaryRep, bool exportAsFacetation, ref IFCAnyHandle bodyRep, ref IFCAnyHandle boundaryRep)
{
if (geometryElement == null)
{
return(false);
}
IFCGeometryInfo ifcGeomInfo = null;
Document doc = element.Document;
Plane plane = GeometryUtil.CreateDefaultPlane();
XYZ projDir = new XYZ(0, 0, 1);
double eps = UnitUtil.ScaleLength(doc.Application.VertexTolerance);
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle surface;
ICollection <IFCAnyHandle> boundaryRepresentations = new List <IFCAnyHandle>();
// Use tessellated geometry for surface in IFC Reference View
if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
BodyExporterOptions options = new BodyExporterOptions(false, ExportOptionsCache.ExportTessellationLevel.ExtraLow);
surface = BodyExporter.ExportBodyAsTessellatedFaceSet(exporterIFC, element, options, geometryElement);
if (element is Autodesk.Revit.DB.Architecture.TopographySurface)
{
// TODO: need to find a good way to create the right boundary outline!
//IList<XYZ> boundaryPoints = (element as Autodesk.Revit.DB.Architecture.TopographySurface).GetBoundaryPoints();
//if (boundaryPoints != null && boundaryPoints.Count > 0)
//{
// IList<IFCAnyHandle> coords = new List<IFCAnyHandle>();
// foreach (XYZ point in boundaryPoints)
// {
// XYZ scPoint = ExporterIFCUtils.TransformAndScalePoint(exporterIFC, point);
// IList<double> uvPoint = new List<double>();
// // SInce the projection direction is on Z-axis, simply ignoring the Z-value will do for this. And also the Site reference will follow the WCS
// uvPoint.Add(scPoint.X);
// uvPoint.Add(scPoint.Y);
// IFCAnyHandle ifcCartesianPoint = IFCInstanceExporter.CreateCartesianPoint(file, uvPoint);
// coords.Add(ifcCartesianPoint);
// }
// if (coords.Count >= 2)
// {
// IFCAnyHandle boundaryLines = IFCInstanceExporter.CreatePolyline(file, coords);
// boundaryRepresentations.Add(boundaryLines);
// }
//}
}
}
else
{
ifcGeomInfo = IFCGeometryInfo.CreateFaceGeometryInfo(exporterIFC, plane, projDir, eps, exportBoundaryRep);
ExporterIFCUtils.CollectGeometryInfo(exporterIFC, ifcGeomInfo, geometryElement, XYZ.Zero, true);
HashSet <IFCAnyHandle> faceSets = new HashSet <IFCAnyHandle>();
IList <ICollection <IFCAnyHandle> > faceList = ifcGeomInfo.GetFaces();
foreach (ICollection <IFCAnyHandle> faces in faceList)
{
// no faces, don't complain.
if (faces.Count == 0)
{
continue;
}
HashSet <IFCAnyHandle> faceSet = new HashSet <IFCAnyHandle>(faces);
faceSets.Add(IFCInstanceExporter.CreateConnectedFaceSet(file, faceSet));
}
if (faceSets.Count == 0)
{
return(false);
}
surface = IFCInstanceExporter.CreateFaceBasedSurfaceModel(file, faceSets);
// Collect Footprint data
boundaryRepresentations = ifcGeomInfo.GetRepresentations();
}
if (IFCAnyHandleUtil.IsNullOrHasNoValue(surface))
{
return(false);
}
BodyExporter.CreateSurfaceStyleForRepItem(exporterIFC, doc, surface, BodyExporter.GetBestMaterialIdFromGeometryOrParameter(geometryElement, exporterIFC, element));
ISet <IFCAnyHandle> surfaceItems = new HashSet <IFCAnyHandle>();
surfaceItems.Add(surface);
ElementId catId = CategoryUtil.GetSafeCategoryId(element);
bodyRep = RepresentationUtil.CreateSurfaceRep(exporterIFC, element, catId, exporterIFC.Get3DContextHandle("Body"), surfaceItems,
exportAsFacetation, bodyRep);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(bodyRep))
{
return(false);
}
if (exportBoundaryRep && boundaryRepresentations.Count > 0)
{
HashSet <IFCAnyHandle> boundaryRepresentationSet = new HashSet <IFCAnyHandle>();
boundaryRepresentationSet.UnionWith(boundaryRepresentations);
boundaryRep = RepresentationUtil.CreateBoundaryRep(exporterIFC, element, catId, exporterIFC.Get3DContextHandle("FootPrint"), boundaryRepresentationSet,
boundaryRep);
}
return(true);
}