// NOTE: the useMappedGeometriesIfPossible and useGroupsIfPossible options are experimental and do not yet work well.
// In shipped code, these are always false, and should be kept false until API support routines are proved to be reliable.
private static BodyData ExportBodyAsBRep(ExporterIFC exporterIFC, IList<GeometryObject> splitGeometryList,
IList<int> exportAsBRep, IList<IFCAnyHandle> bodyItems,
Element element, ElementId categoryId, IFCAnyHandle contextOfItems, double eps, BodyExporterOptions options, BodyData bodyDataIn)
{
bool exportAsBReps = true;
IFCFile file = exporterIFC.GetFile();
Document document = element.Document;
// Can't use the optimization functions below if we already have partially populated our body items with extrusions.
int numExtrusions = bodyItems.Count;
bool useMappedGeometriesIfPossible = options.UseMappedGeometriesIfPossible && (numExtrusions != 0);
bool useGroupsIfPossible = options.UseGroupsIfPossible && (numExtrusions != 0);
IList<HashSet<IFCAnyHandle>> currentFaceHashSetList = new List<HashSet<IFCAnyHandle>>();
IList<int> startIndexForObject = new List<int>();
BodyData bodyData = new BodyData(bodyDataIn);
IDictionary<SolidMetrics, HashSet<Solid>> solidMappingGroups = null;
IList<KeyValuePair<int, Transform>> solidMappings = null;
IList<ElementId> materialIds = new List<ElementId>();
if (useMappedGeometriesIfPossible)
{
IList<GeometryObject> newGeometryList = null;
useMappedGeometriesIfPossible = GatherMappedGeometryGroupings(splitGeometryList, out newGeometryList, out solidMappingGroups, out solidMappings);
if (useMappedGeometriesIfPossible && (newGeometryList != null))
splitGeometryList = newGeometryList;
}
BodyGroupKey groupKey = null;
BodyGroupData groupData = null;
if (useGroupsIfPossible)
{
BodyData bodyDataOut = null;
useGroupsIfPossible = ProcessGroupMembership(exporterIFC, file, element, categoryId, contextOfItems, splitGeometryList, bodyData,
out groupKey, out groupData, out bodyDataOut);
if (bodyDataOut != null)
return bodyDataOut;
if (useGroupsIfPossible)
useMappedGeometriesIfPossible = true;
}
bool isCoarse = (options.TessellationLevel == BodyExporterOptions.BodyTessellationLevel.Coarse);
int numBRepsToExport = exportAsBRep.Count;
bool selectiveBRepExport = (numBRepsToExport > 0);
int numGeoms = selectiveBRepExport ? numBRepsToExport : splitGeometryList.Count;
for (int index = 0; index < numGeoms; index++)
{
GeometryObject geomObject = selectiveBRepExport ? splitGeometryList[exportAsBRep[index]] : splitGeometryList[index];
startIndexForObject.Add(currentFaceHashSetList.Count);
ElementId materialId = SetBestMaterialIdInExporter(geomObject, exporterIFC);
materialIds.Add(materialId);
bodyData.AddMaterial(materialId);
bool exportedAsSolid = false;
if (exportAsBReps || isCoarse)
{
exportedAsSolid = ExportBodyAsSolid(exporterIFC, element, options, currentFaceHashSetList, geomObject);
}
if (!exportedAsSolid)
{
IFCGeometryInfo faceListInfo = IFCGeometryInfo.CreateFaceGeometryInfo(eps, isCoarse);
ExporterIFCUtils.CollectGeometryInfo(exporterIFC, faceListInfo, geomObject, XYZ.Zero, false);
IList<ICollection<IFCAnyHandle>> faceSetList = faceListInfo.GetFaces();
int numBReps = faceSetList.Count;
if (numBReps == 0)
continue;
foreach (ICollection<IFCAnyHandle> currentFaceSet in faceSetList)
{
if (currentFaceSet.Count == 0)
continue;
if (exportAsBReps)
{
if ((currentFaceSet.Count < 4) || !CanCreateClosedShell(currentFaceSet))
{
exportAsBReps = false;
// We'll need to invalidate the extrusions we created and replace them with BReps.
if (selectiveBRepExport && (numGeoms != splitGeometryList.Count))
{
for (int fixIndex = 0; fixIndex < numExtrusions; fixIndex++)
{
bodyItems[0].Delete();
bodyItems.RemoveAt(0);
}
numExtrusions = 0;
numGeoms = splitGeometryList.Count;
int brepIndex = 0;
for (int fixIndex = 0; fixIndex < numGeoms; fixIndex++)
{
if ((brepIndex < numBRepsToExport) && (exportAsBRep[brepIndex] == fixIndex))
{
brepIndex++;
continue;
}
exportAsBRep.Add(fixIndex);
}
numBRepsToExport = exportAsBRep.Count;
}
}
}
currentFaceHashSetList.Add(new HashSet<IFCAnyHandle>(currentFaceSet));
}
}
}
startIndexForObject.Add(currentFaceHashSetList.Count); // end index for last object.
IList<IFCAnyHandle> repMapItems = new List<IFCAnyHandle>();
int size = currentFaceHashSetList.Count;
if (exportAsBReps)
{
int matToUse = -1;
for (int ii = 0; ii < size; ii++)
{
if (startIndexForObject[matToUse + 1] == ii)
matToUse++;
HashSet<IFCAnyHandle> currentFaceHashSet = currentFaceHashSetList[ii];
IFCAnyHandle faceOuter = IFCInstanceExporter.CreateClosedShell(file, currentFaceHashSet);
IFCAnyHandle brepHnd = RepresentationUtil.CreateFacetedBRep(exporterIFC, document, faceOuter, materialIds[matToUse]);
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(brepHnd))
{
if (useMappedGeometriesIfPossible)
{
IFCAnyHandle currMappedRepHnd = CreateBRepRepresentationMap(exporterIFC, file, element, categoryId, contextOfItems, brepHnd);
repMapItems.Add(currMappedRepHnd);
IFCAnyHandle mappedItemHnd = ExporterUtil.CreateDefaultMappedItem(file, currMappedRepHnd);
bodyItems.Add(mappedItemHnd);
}
else
bodyItems.Add(brepHnd);
}
}
}
else
{
IDictionary<ElementId, HashSet<IFCAnyHandle>> faceSets = new Dictionary<ElementId, HashSet<IFCAnyHandle>>();
int matToUse = -1;
for (int ii = 0; ii < size; ii++)
{
HashSet<IFCAnyHandle> currentFaceHashSet = currentFaceHashSetList[ii];
if (startIndexForObject[matToUse+1] == ii)
matToUse++;
IFCAnyHandle faceSetHnd = IFCInstanceExporter.CreateConnectedFaceSet(file, currentFaceHashSet);
if (useMappedGeometriesIfPossible)
{
IFCAnyHandle currMappedRepHnd = CreateSurfaceRepresentationMap(exporterIFC, file, element, categoryId, contextOfItems, faceSetHnd);
repMapItems.Add(currMappedRepHnd);
IFCAnyHandle mappedItemHnd = ExporterUtil.CreateDefaultMappedItem(file, currMappedRepHnd);
bodyItems.Add(mappedItemHnd);
}
else
{
HashSet<IFCAnyHandle> surfaceSet = null;
if (faceSets.TryGetValue(materialIds[matToUse], out surfaceSet))
{
surfaceSet.Add(faceSetHnd);
}
else
{
surfaceSet = new HashSet<IFCAnyHandle>();
surfaceSet.Add(faceSetHnd);
faceSets[materialIds[matToUse]] = surfaceSet;
}
}
}
if (faceSets.Count > 0)
{
foreach (KeyValuePair<ElementId, HashSet<IFCAnyHandle>> faceSet in faceSets)
{
IFCAnyHandle surfaceModel = IFCInstanceExporter.CreateFaceBasedSurfaceModel(file, faceSet.Value);
BodyExporter.CreateSurfaceStyleForRepItem(exporterIFC, document, surfaceModel, faceSet.Key);
bodyItems.Add(surfaceModel);
}
}
}
if (bodyItems.Count == 0)
return bodyData;
// Add in mapped items.
if (useMappedGeometriesIfPossible && (solidMappings != null))
{
foreach (KeyValuePair<int, Transform> mappedItem in solidMappings)
{
for (int idx = startIndexForObject[mappedItem.Key]; idx < startIndexForObject[mappedItem.Key + 1]; idx++)
{
IFCAnyHandle mappedItemHnd = ExporterUtil.CreateMappedItemFromTransform(file, repMapItems[idx], mappedItem.Value);
bodyItems.Add(mappedItemHnd);
}
}
}
if (useMappedGeometriesIfPossible)
{
bodyData.RepresentationHnd = RepresentationUtil.CreateBodyMappedItemRep(exporterIFC, element, categoryId, contextOfItems, bodyItems);
}
else if (exportAsBReps)
{
if (numExtrusions > 0)
bodyData.RepresentationHnd = RepresentationUtil.CreateSolidModelRep(exporterIFC, element, categoryId, contextOfItems, bodyItems);
else
bodyData.RepresentationHnd = RepresentationUtil.CreateBRepRep(exporterIFC, element, categoryId, contextOfItems, bodyItems);
}
else
bodyData.RepresentationHnd = RepresentationUtil.CreateSurfaceRep(exporterIFC, element, categoryId, contextOfItems, bodyItems, false, null);
if (useGroupsIfPossible && (groupKey != null) && (groupData != null))
{
groupData.Handles = repMapItems;
ExporterCacheManager.GroupElementGeometryCache.Register(groupKey, groupData);
}
return bodyData;
}
/// <summary>
/// Exports list of geometries to IFC body representation.
/// </summary>
/// <param name="application">The Revit application.</param>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="categoryId">The category id.</param>
/// <param name="geometryListIn">The geometry list.</param>
/// <param name="options">The settings for how to export the body.</param>
/// <param name="exportBodyParams">The extrusion creation data.</param>
/// <returns>The BodyData containing the handle, offset and material ids.</returns>
public static BodyData ExportBody(Autodesk.Revit.ApplicationServices.Application application,
ExporterIFC exporterIFC,
Element element,
ElementId categoryId,
IList<GeometryObject> geometryListIn,
BodyExporterOptions options,
IFCExtrusionCreationData exportBodyParams)
{
BodyData bodyData = new BodyData();
if (geometryListIn.Count == 0)
return bodyData;
Document document = element.Document;
bool tryToExportAsExtrusion = options.TryToExportAsExtrusion;
bool canExportSolidModelRep = false;
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle contextOfItems = exporterIFC.Get3DContextHandle("Body");
double scale = exporterIFC.LinearScale;
double eps = application.VertexTolerance * scale;
IList<GeometryObject> splitGeometryList = new List<GeometryObject>();
bool allFaces = true;
foreach (GeometryObject geomObject in geometryListIn)
{
try
{
bool split = false;
if (geomObject is Solid)
{
Solid solid = geomObject as Solid;
IList<Solid> splitVolumes = SolidUtils.SplitVolumes(solid);
allFaces = false;
if (splitVolumes != null && splitVolumes.Count != 0)
{
split = true;
foreach (Solid currSolid in splitVolumes)
{
splitGeometryList.Add(currSolid);
// The geometry element created by SplitVolumesis a copy which will have its own allocated
// membership - this needs to be stored and disposed of (see AllocatedGeometryObjectCache
// for details)
ExporterCacheManager.AllocatedGeometryObjectCache.AddGeometryObject(currSolid);
}
}
}
else if (allFaces && !(geomObject is Face))
allFaces = false;
if (!split)
splitGeometryList.Add(geomObject);
}
catch
{
splitGeometryList.Add(geomObject);
}
}
IList<IFCAnyHandle> bodyItems = new List<IFCAnyHandle>();
IList<ElementId> materialIdsForExtrusions = new List<ElementId>();
IList<int> exportAsBRep = new List<int>();
IList<int> exportAsExtrusion = new List<int>();
using (IFCTransaction tr = new IFCTransaction(file))
{
if (tryToExportAsExtrusion)
{
// Check to see if we have Geometries or GFaces.
// We will have the specific all GFaces case and then the generic case.
IList<Face> faces = null;
if (allFaces)
{
faces = new List<Face>();
foreach (GeometryObject geometryObject in splitGeometryList)
{
faces.Add(geometryObject as Face);
}
}
int numExtrusionsToCreate = allFaces ? 1 : splitGeometryList.Count;
IList<IList<IFCExtrusionData>> extrusionLists = new List<IList<IFCExtrusionData>>();
for (int ii = 0; ii < numExtrusionsToCreate && tryToExportAsExtrusion; ii++)
{
IList<IFCExtrusionData> extrusionList = new List<IFCExtrusionData>();
IFCExtrusionAxes axesToExtrudeIn = exportBodyParams != null ? exportBodyParams.PossibleExtrusionAxes : IFCExtrusionAxes.TryDefault;
XYZ directionToExtrudeIn = XYZ.Zero;
if (exportBodyParams != null && exportBodyParams.HasCustomAxis)
directionToExtrudeIn = exportBodyParams.CustomAxis;
IFCExtrusionCalculatorOptions extrusionOptions =
new IFCExtrusionCalculatorOptions(exporterIFC, axesToExtrudeIn, directionToExtrudeIn, scale);
if (allFaces)
extrusionList = IFCExtrusionCalculatorUtils.CalculateExtrusionData(extrusionOptions, faces);
else
extrusionList = IFCExtrusionCalculatorUtils.CalculateExtrusionData(extrusionOptions, splitGeometryList[ii]);
if (extrusionList.Count == 0)
{
if (!canExportSolidModelRep)
{
tryToExportAsExtrusion = false;
break;
}
exportAsBRep.Add(ii);
}
else
{
extrusionLists.Add(extrusionList);
exportAsExtrusion.Add(ii);
}
}
int numCreatedExtrusions = extrusionLists.Count;
for (int ii = 0; (ii < numCreatedExtrusions) && tryToExportAsExtrusion; ii++)
{
int geomIndex = exportAsExtrusion[ii];
bodyData.AddMaterial(SetBestMaterialIdInExporter(splitGeometryList[geomIndex], exporterIFC));
if (exportBodyParams != null && exportBodyParams.AreInnerRegionsOpenings)
{
IList<CurveLoop> curveLoops = extrusionLists[ii][0].GetLoops();
XYZ extrudedDirection = extrusionLists[ii][0].ExtrusionDirection;
int numLoops = curveLoops.Count;
for (int jj = numLoops - 1; jj > 0; jj--)
{
ExtrusionExporter.AddOpeningData(exportBodyParams, extrusionLists[ii][0], curveLoops[jj]);
extrusionLists[ii][0].RemoveLoopAt(jj);
}
}
bool exportedAsExtrusion = false;
IFCExtrusionBasis whichBasis = extrusionLists[ii][0].ExtrusionBasis;
if (whichBasis >= 0)
{
IFCAnyHandle extrusionHandle = ExtrusionExporter.CreateExtrudedSolidFromExtrusionData(exporterIFC, element, extrusionLists[ii][0]);
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(extrusionHandle))
{
bodyItems.Add(extrusionHandle);
materialIdsForExtrusions.Add(exporterIFC.GetMaterialIdForCurrentExportState());
IList<CurveLoop> curveLoops = extrusionLists[ii][0].GetLoops();
XYZ extrusionDirection = extrusionLists[ii][0].ExtrusionDirection;
if (exportBodyParams != null)
{
double zOff = (whichBasis == IFCExtrusionBasis.BasisZ) ? (1.0 - Math.Abs(extrusionDirection[2])) : Math.Abs(extrusionDirection[2]);
double scaledAngle = Math.Asin(zOff) * 180 / Math.PI;
exportBodyParams.Slope = scaledAngle;
exportBodyParams.ScaledLength = extrusionLists[ii][0].ScaledExtrusionLength;
exportBodyParams.ExtrusionDirection = extrusionDirection;
for (int kk = 1; kk < extrusionLists[ii].Count; kk++)
{
ExtrusionExporter.AddOpeningData(exportBodyParams, extrusionLists[ii][kk]);
}
Plane plane = null;
double height = 0.0, width = 0.0;
if (ExtrusionExporter.ComputeHeightWidthOfCurveLoop(curveLoops[0], plane, out height, out width))
{
exportBodyParams.ScaledHeight = height * scale;
exportBodyParams.ScaledWidth = width * scale;
}
double area = ExporterIFCUtils.ComputeAreaOfCurveLoops(curveLoops);
if (area > 0.0)
{
exportBodyParams.ScaledArea = area * scale * scale;
}
double innerPerimeter = ExtrusionExporter.ComputeInnerPerimeterOfCurveLoops(curveLoops);
double outerPerimeter = ExtrusionExporter.ComputeOuterPerimeterOfCurveLoops(curveLoops);
if (innerPerimeter > 0.0)
exportBodyParams.ScaledInnerPerimeter = innerPerimeter * scale;
if (outerPerimeter > 0.0)
exportBodyParams.ScaledOuterPerimeter = outerPerimeter * scale;
}
exportedAsExtrusion = true;
}
}
if (!exportedAsExtrusion)
{
if (!canExportSolidModelRep)
{
tryToExportAsExtrusion = false;
break;
}
exportAsBRep.Add(ii);
}
}
}
if ((exportAsBRep.Count == 0) && tryToExportAsExtrusion)
{
int sz = bodyItems.Count();
for (int ii = 0; ii < sz; ii++)
BodyExporter.CreateSurfaceStyleForRepItem(exporterIFC, document, bodyItems[ii], materialIdsForExtrusions[ii]);
bodyData.RepresentationHnd =
RepresentationUtil.CreateSweptSolidRep(exporterIFC, element, categoryId, contextOfItems, bodyItems, bodyData.RepresentationHnd);
}
if (tryToExportAsExtrusion)
tr.Commit();
else
tr.RollBack();
if ((exportAsBRep.Count == 0) && tryToExportAsExtrusion)
return bodyData;
}
// We couldn't export it as an extrusion; export as a solid, brep, or a surface model.
if (!canExportSolidModelRep)
{
exportAsExtrusion.Clear();
bodyItems.Clear();
if (exportBodyParams != null)
exportBodyParams.ClearOpenings();
}
if (exportAsExtrusion.Count == 0)
exportAsBRep.Clear();
// generate "bottom corner" of bbox; create new local placement if passed in.
// need to transform, but not scale, this point to make it the new origin.
// We will only do this if we didn't create any extrusions at all.
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
if (exportBodyParams != null && (exportAsBRep.Count == 0))
bodyData.BrepOffsetTransform = transformSetter.InitializeFromBoundingBox(exporterIFC, splitGeometryList, exportBodyParams);
return ExportBodyAsBRep(exporterIFC, splitGeometryList, exportAsBRep, bodyItems, element, categoryId, contextOfItems, eps, options, bodyData);
}
}
/// <summary>
/// Exports list of geometries to IFC body representation.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="categoryId">The category id.</param>
/// <param name="geometryListIn">The geometry list.</param>
/// <param name="options">The settings for how to export the body.</param>
/// <param name="exportBodyParams">The extrusion creation data.</param>
/// <returns>The BodyData containing the handle, offset and material ids.</returns>
public static BodyData ExportBody(ExporterIFC exporterIFC,
Element element,
ElementId categoryId,
ElementId overrideMaterialId,
IList<GeometryObject> geometryList,
BodyExporterOptions options,
IFCExtrusionCreationData exportBodyParams)
{
BodyData bodyData = new BodyData();
if (geometryList.Count == 0)
return bodyData;
Document document = element.Document;
bool tryToExportAsExtrusion = options.TryToExportAsExtrusion;
bool canExportSolidModelRep = tryToExportAsExtrusion && ExporterCacheManager.ExportOptionsCache.CanExportSolidModelRep;
// This will default to false for now in all cases, as swept solids are not included in CV2.0.
bool tryToExportAsSweptSolid = options.TryToExportAsSweptSolid;
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle contextOfItems = exporterIFC.Get3DContextHandle("Body");
double scale = exporterIFC.LinearScale;
double eps = element.Document.Application.VertexTolerance * scale;
bool allFaces = true;
foreach (GeometryObject geomObject in geometryList)
{
if (allFaces && !(geomObject is Face))
allFaces = false;
break;
}
IList<IFCAnyHandle> bodyItems = new List<IFCAnyHandle>();
IList<ElementId> materialIdsForExtrusions = new List<ElementId>();
IList<int> exportAsBRep = new List<int>();
IList<int> exportAsSweptSolid = new List<int>();
IList<int> exportAsExtrusion = new List<int>();
bool hasExtrusions = false;
bool hasSweptSolids = false;
XYZ unscaledTrfOrig = new XYZ();
using (IFCTransaction tr = new IFCTransaction(file))
{
// generate "bottom corner" of bbox; create new local placement if passed in.
// need to transform, but not scale, this point to make it the new origin.
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
// We may need to get the original values back, in case the export rolls back.
IFCLocalPlacementBackup localPlacementBackup = null;
if (options.AllowOffsetTransform && exportBodyParams!= null)
{
localPlacementBackup = new IFCLocalPlacementBackup(exportBodyParams.GetLocalPlacement());
bodyData.OffsetTransform = transformSetter.InitializeFromBoundingBox(exporterIFC, geometryList, exportBodyParams);
}
if (tryToExportAsExtrusion)
{
// Check to see if we have Geometries or GFaces.
// We will have the specific all GFaces case and then the generic case.
IList<Face> faces = null;
if (allFaces)
{
faces = new List<Face>();
foreach (GeometryObject geometryObject in geometryList)
{
faces.Add(geometryObject as Face);
}
}
int numExtrusionsToCreate = allFaces ? 1 : geometryList.Count;
IList<IList<IFCExtrusionData>> extrusionLists = new List<IList<IFCExtrusionData>>();
for (int ii = 0; ii < numExtrusionsToCreate && tryToExportAsExtrusion; ii++)
{
IList<IFCExtrusionData> extrusionList = new List<IFCExtrusionData>();
IFCExtrusionAxes axesToExtrudeIn = exportBodyParams != null ? exportBodyParams.PossibleExtrusionAxes : IFCExtrusionAxes.TryDefault;
XYZ directionToExtrudeIn = XYZ.Zero;
if (exportBodyParams != null && exportBodyParams.HasCustomAxis)
directionToExtrudeIn = exportBodyParams.CustomAxis;
IFCExtrusionCalculatorOptions extrusionOptions =
new IFCExtrusionCalculatorOptions(exporterIFC, axesToExtrudeIn, directionToExtrudeIn, scale);
if (allFaces)
extrusionList = IFCExtrusionCalculatorUtils.CalculateExtrusionData(extrusionOptions, faces);
else
extrusionList = IFCExtrusionCalculatorUtils.CalculateExtrusionData(extrusionOptions, geometryList[ii]);
if (extrusionList.Count == 0)
{
if (tryToExportAsSweptSolid)
exportAsSweptSolid.Add(ii);
else if (!canExportSolidModelRep)
{
tryToExportAsExtrusion = false;
break;
}
else
exportAsBRep.Add(ii);
}
else
{
extrusionLists.Add(extrusionList);
exportAsExtrusion.Add(ii);
}
}
int numCreatedExtrusions = extrusionLists.Count;
for (int ii = 0; ii < numCreatedExtrusions && tryToExportAsExtrusion; ii++)
{
int geomIndex = exportAsExtrusion[ii];
ElementId matId = SetBestMaterialIdInExporter(geometryList[geomIndex], element, overrideMaterialId, exporterIFC);
if (matId != ElementId.InvalidElementId)
bodyData.AddMaterial(matId);
if (exportBodyParams != null && exportBodyParams.AreInnerRegionsOpenings)
{
IList<CurveLoop> curveLoops = extrusionLists[ii][0].GetLoops();
XYZ extrudedDirection = extrusionLists[ii][0].ExtrusionDirection;
int numLoops = curveLoops.Count;
for (int jj = numLoops - 1; jj > 0; jj--)
{
ExtrusionExporter.AddOpeningData(exportBodyParams, extrusionLists[ii][0], curveLoops[jj]);
extrusionLists[ii][0].RemoveLoopAt(jj);
}
}
bool exportedAsExtrusion = false;
IFCExtrusionBasis whichBasis = extrusionLists[ii][0].ExtrusionBasis;
if (whichBasis >= 0)
{
IFCAnyHandle extrusionHandle = ExtrusionExporter.CreateExtrudedSolidFromExtrusionData(exporterIFC, element, extrusionLists[ii][0]);
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(extrusionHandle))
{
bodyItems.Add(extrusionHandle);
materialIdsForExtrusions.Add(exporterIFC.GetMaterialIdForCurrentExportState());
IList<CurveLoop> curveLoops = extrusionLists[ii][0].GetLoops();
XYZ extrusionDirection = extrusionLists[ii][0].ExtrusionDirection;
if (exportBodyParams != null)
{
exportBodyParams.Slope = GeometryUtil.GetSimpleExtrusionSlope(extrusionDirection, whichBasis);
exportBodyParams.ScaledLength = extrusionLists[ii][0].ScaledExtrusionLength;
exportBodyParams.ExtrusionDirection = extrusionDirection;
for (int kk = 1; kk < extrusionLists[ii].Count; kk++)
{
ExtrusionExporter.AddOpeningData(exportBodyParams, extrusionLists[ii][kk]);
}
Plane plane = null;
double height = 0.0, width = 0.0;
if (ExtrusionExporter.ComputeHeightWidthOfCurveLoop(curveLoops[0], plane, out height, out width))
{
exportBodyParams.ScaledHeight = height * scale;
exportBodyParams.ScaledWidth = width * scale;
}
double area = ExporterIFCUtils.ComputeAreaOfCurveLoops(curveLoops);
if (area > 0.0)
{
exportBodyParams.ScaledArea = area * scale * scale;
}
double innerPerimeter = ExtrusionExporter.ComputeInnerPerimeterOfCurveLoops(curveLoops);
double outerPerimeter = ExtrusionExporter.ComputeOuterPerimeterOfCurveLoops(curveLoops);
if (innerPerimeter > 0.0)
exportBodyParams.ScaledInnerPerimeter = innerPerimeter * scale;
if (outerPerimeter > 0.0)
exportBodyParams.ScaledOuterPerimeter = outerPerimeter * scale;
}
exportedAsExtrusion = true;
hasExtrusions = true;
}
}
if (!exportedAsExtrusion)
{
if (tryToExportAsSweptSolid)
exportAsSweptSolid.Add(ii);
else if (!canExportSolidModelRep)
{
tryToExportAsExtrusion = false;
break;
}
else
exportAsBRep.Add(ii);
}
}
}
if (tryToExportAsSweptSolid)
{
int numCreatedSweptSolids = exportAsSweptSolid.Count;
for (int ii = 0; (ii < numCreatedSweptSolids) && tryToExportAsSweptSolid; ii++)
{
bool exported = false;
int geomIndex = exportAsSweptSolid[ii];
Solid solid = geometryList[geomIndex] as Solid;
// TODO: allFaces to SweptSolid
if (solid != null)
{
// TODO: other types of Axes
XYZ normal = new XYZ(0, 0, 1);
SweptSolidExporter sweptSolidExporter = SweptSolidExporter.Create(exporterIFC, element, solid, normal);
if (sweptSolidExporter != null)
{
IFCAnyHandle sweptHandle = sweptSolidExporter.RepresentationItem;
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(sweptHandle))
{
bodyItems.Add(sweptHandle);
materialIdsForExtrusions.Add(exporterIFC.GetMaterialIdForCurrentExportState());
exported = true;
if (sweptSolidExporter.IsExtrusion)
hasExtrusions = true;
else
hasSweptSolids = true;
}
}
}
if (!exported)
exportAsBRep.Add(ii);
}
}
bool exportSucceeded = (exportAsBRep.Count == 0) && (tryToExportAsExtrusion || tryToExportAsSweptSolid) && (hasExtrusions || hasSweptSolids);
if (exportSucceeded || canExportSolidModelRep)
{
int sz = bodyItems.Count();
for (int ii = 0; ii < sz; ii++)
BodyExporter.CreateSurfaceStyleForRepItem(exporterIFC, document, bodyItems[ii], materialIdsForExtrusions[ii]);
if (exportSucceeded)
{
if (hasExtrusions && !hasSweptSolids)
{
bodyData.RepresentationHnd =
RepresentationUtil.CreateSweptSolidRep(exporterIFC, element, categoryId, contextOfItems, bodyItems, bodyData.RepresentationHnd);
bodyData.ShapeRepresentationType = ShapeRepresentationType.SweptSolid;
}
else if (hasSweptSolids && !hasExtrusions)
{
bodyData.RepresentationHnd =
RepresentationUtil.CreateAdvancedSweptSolidRep(exporterIFC, element, categoryId, contextOfItems, bodyItems, bodyData.RepresentationHnd);
bodyData.ShapeRepresentationType = ShapeRepresentationType.AdvancedSweptSolid;
}
else
{
bodyData.RepresentationHnd =
RepresentationUtil.CreateSolidModelRep(exporterIFC, element, categoryId, contextOfItems, bodyItems);
bodyData.ShapeRepresentationType = ShapeRepresentationType.SolidModel;
}
// TODO: include BRep, CSG, Clipping
tr.Commit();
return bodyData;
}
}
// If we are going to export a solid model, keep the created items.
if (!canExportSolidModelRep)
{
tr.RollBack();
// Revert to the original local placement, and re-set the relative placement, as the rollback may delete either.
if (localPlacementBackup != null)
{
IFCAnyHandle origLocalPlacement = localPlacementBackup.Restore();
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(origLocalPlacement))
exportBodyParams.SetLocalPlacement(origLocalPlacement);
}
}
else
tr.Commit();
}
// We couldn't export it as an extrusion; export as a solid, brep, or a surface model.
if (!canExportSolidModelRep)
{
exportAsExtrusion.Clear();
bodyItems.Clear();
if (exportBodyParams != null)
exportBodyParams.ClearOpenings();
}
if (exportAsExtrusion.Count == 0)
exportAsBRep.Clear();
}
using (IFCTransaction tr = new IFCTransaction(file))
{
using (IFCTransformSetter transformSetter = IFCTransformSetter.Create())
{
if (exportBodyParams != null && (exportAsBRep.Count == 0))
bodyData.OffsetTransform = transformSetter.InitializeFromBoundingBox(exporterIFC, geometryList, exportBodyParams);
BodyData retBodyData = ExportBodyAsBRep(exporterIFC, geometryList, exportAsBRep, bodyItems, element, categoryId, overrideMaterialId, contextOfItems, eps, options, bodyData);
if (retBodyData != null)
tr.Commit();
else
tr.RollBack();
return retBodyData;
}
}
}