/// <summary>
/// Collect information about material layer.
/// For IFC4RV Architectural exchange, it will generate IfcMatrialConstituentSet along with the relevant IfcShapeAspect and the width in the quantityset
/// For IFC4RV Structural exchange, it will generate multiple components as IfcBuildingElementPart for each layer
/// For others IfcMaterialLayer will be created
/// </summary>
private void CollectMaterialLayerSet()
{
ElementId typeElemId = m_Element.GetTypeId();
MaterialIds = new List <Tuple <ElementId, string, double> >();
IFCAnyHandle materialLayerSet = ExporterCacheManager.MaterialSetCache.FindLayerSet(typeElemId);
// Roofs with no components are only allowed one material. We will arbitrarily choose the thickest material.
PrimaryMaterialHandle = ExporterCacheManager.MaterialSetCache.FindPrimaryMaterialHnd(typeElemId);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(materialLayerSet))
{
List <double> widths = new List <double>();
List <MaterialFunctionAssignment> functions = new List <MaterialFunctionAssignment>();
HostObjAttributes hostObjAttr = m_Element.Document.GetElement(typeElemId) as HostObjAttributes;
if (hostObjAttr == null)
{
// It does not have the HostObjAttribute (where we will get the compound structure for material layer set.
// We will define a single material instead and create the material layer set of this single material if there is enough information (At least Material id and thickness)
FamilyInstance familyInstance = m_Element as FamilyInstance;
if (familyInstance == null)
{
return;
}
FamilySymbol familySymbol = familyInstance.Symbol;
ICollection <ElementId> famMatIds = familySymbol.GetMaterialIds(false);
if (famMatIds.Count == 0)
{
// For some reason Plate type may not return any Material id
ElementId baseMatId = CategoryUtil.GetBaseMaterialIdForElement(m_Element);
Material material = m_Element.Document.GetElement(baseMatId) as Material;
if (material == null)
{
return;
}
string layerName = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Name", material.Name);
double matWidth = 0.0;
Parameter thicknessPar = familySymbol.get_Parameter(BuiltInParameter.CURTAIN_WALL_SYSPANEL_THICKNESS);
if (thicknessPar != null)
{
matWidth = thicknessPar.AsDouble();
}
widths.Add(matWidth);
if (baseMatId != ElementId.InvalidElementId)
{
MaterialIds.Add(new Tuple <ElementId, string, double>(baseMatId, layerName, matWidth));
}
// How to get the thickness? For CurtainWall Panel (PanelType), there is a builtin parameter CURTAINWALL_SYSPANEL_THICKNESS
functions.Add(MaterialFunctionAssignment.None);
}
else
{
foreach (ElementId matid in famMatIds)
{
// How to get the thickness? For CurtainWall Panel (PanelType), there is a builtin parameter CURTAINWALL_SYSPANEL_THICKNESS
Parameter thicknessPar = familySymbol.get_Parameter(BuiltInParameter.CURTAIN_WALL_SYSPANEL_THICKNESS);
double matWidth = 0.0;
if (thicknessPar == null)
{
matWidth = ParameterUtil.GetSpecialThicknessParameter(familySymbol);
}
else
{
matWidth = thicknessPar.AsDouble();
}
if (MathUtil.IsAlmostZero(matWidth))
{
continue;
}
widths.Add(matWidth);
ElementId baseMatId = CategoryUtil.GetBaseMaterialIdForElement(m_Element);
if (matid != ElementId.InvalidElementId)
{
Material material = m_Element.Document.GetElement(matid) as Material;
if (material != null)
{
string layerName = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Name", material.Name);
MaterialIds.Add(new Tuple <ElementId, string, double>(matid, layerName, matWidth));
}
}
else
{
MaterialIds.Add(new Tuple <ElementId, string, double>(baseMatId, null, matWidth));
}
functions.Add(MaterialFunctionAssignment.None);
}
}
}
else
{
ElementId baseMatId = CategoryUtil.GetBaseMaterialIdForElement(m_Element);
CompoundStructure cs = hostObjAttr.GetCompoundStructure();
if (cs != null)
{
double scaledOffset = 0.0, scaledWallWidth = 0.0, wallHeight = 0.0;
Wall wall = m_Element as Wall;
if (wall != null)
{
scaledWallWidth = UnitUtil.ScaleLength(wall.Width);
scaledOffset = -scaledWallWidth / 2.0;
BoundingBoxXYZ boundingBox = wall.get_BoundingBox(null);
if (boundingBox != null)
{
wallHeight = boundingBox.Max.Z - boundingBox.Min.Z;
}
}
//TODO: Vertically compound structures are not yet supported by export.
if (!cs.IsVerticallyHomogeneous() && !MathUtil.IsAlmostZero(wallHeight))
{
cs = cs.GetSimpleCompoundStructure(wallHeight, wallHeight / 2.0);
}
for (int ii = 0; ii < cs.LayerCount; ++ii)
{
double matWidth = cs.GetLayerWidth(ii);
//if (MathUtil.IsAlmostZero(matWidth))
// continue;
ElementId matId = cs.GetMaterialId(ii);
if (matId != ElementId.InvalidElementId)
{
Material material = m_Element.Document.GetElement(matId) as Material;
if (material != null)
{
string layerName = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Name", material.Name);
MaterialIds.Add(new Tuple <ElementId, string, double>(matId, layerName, matWidth));
}
}
else
{
MaterialIds.Add(new Tuple <ElementId, string, double>(baseMatId, null, matWidth));
}
widths.Add(matWidth);
// save layer function into ProductWrapper,
// it's used while exporting "Function" of Pset_CoveringCommon
functions.Add(cs.GetLayerFunction(ii));
}
}
if (MaterialIds.Count == 0)
{
double matWidth = cs != null?cs.GetWidth() : 0.0;
widths.Add(matWidth);
if (baseMatId != ElementId.InvalidElementId)
{
Material material = m_Element.Document.GetElement(baseMatId) as Material;
if (material != null)
{
string layerName = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Name", material.Name);
MaterialIds.Add(new Tuple <ElementId, string, double>(baseMatId, layerName, matWidth));
}
}
functions.Add(MaterialFunctionAssignment.None);
}
}
if (m_ProductWrapper != null)
{
m_ProductWrapper.ClearFinishMaterials();
}
// We can't create IfcMaterialLayers without creating an IfcMaterialLayerSet. So we will simply collate here.
IList <IFCAnyHandle> materialHnds = new List <IFCAnyHandle>();
IList <int> widthIndices = new List <int>();
double thickestLayer = 0.0;
for (int ii = 0; ii < MaterialIds.Count; ++ii)
{
// Require positive width for IFC2x3 and before, and non-negative width for IFC4.
if (widths[ii] < -MathUtil.Eps())
{
continue;
}
bool almostZeroWidth = MathUtil.IsAlmostZero(widths[ii]);
if (!ExporterCacheManager.ExportOptionsCache.ExportAs4 && almostZeroWidth)
{
continue;
}
if (almostZeroWidth)
{
widths[ii] = 0.0;
}
IFCAnyHandle materialHnd = CategoryUtil.GetOrCreateMaterialHandle(m_ExporterIFC, MaterialIds[ii].Item1);
if (PrimaryMaterialHandle == null || (widths[ii] > thickestLayer))
{
PrimaryMaterialHandle = materialHnd;
thickestLayer = widths[ii];
}
widthIndices.Add(ii);
materialHnds.Add(materialHnd);
if ((m_ProductWrapper != null) && (functions[ii] == MaterialFunctionAssignment.Finish1 || functions[ii] == MaterialFunctionAssignment.Finish2))
{
m_ProductWrapper.AddFinishMaterial(materialHnd);
}
}
int numLayersToCreate = widthIndices.Count;
if (numLayersToCreate == 0)
{
MaterialLayerSetHandle = materialLayerSet;
return;
}
// If it is a single material, check single material override (only IfcMaterial without IfcMaterialLayerSet with only 1 member)
if (numLayersToCreate == 1 && ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
string paramValue;
ParameterUtil.GetStringValueFromElementOrSymbol(m_Element, "IfcSingleMaterialOverride", out paramValue);
if (!string.IsNullOrEmpty(paramValue))
{
IFCAnyHandle singleMaterialOverrideHnd = IFCInstanceExporter.CreateMaterial(m_ExporterIFC.GetFile(), paramValue, null, null);
ExporterCacheManager.MaterialHandleCache.Register(MaterialIds[0].Item1, singleMaterialOverrideHnd);
MaterialLayerSetHandle = singleMaterialOverrideHnd;
return;
}
}
IFCFile file = m_ExporterIFC.GetFile();
Document document = ExporterCacheManager.Document;
IList <IFCAnyHandle> layers = new List <IFCAnyHandle>(numLayersToCreate);
IList <Tuple <string, IFCAnyHandle> > layerWidthQuantities = new List <Tuple <string, IFCAnyHandle> >();
HashSet <string> layerNameUsed = new HashSet <string>();
double totalWidth = 0.0;
for (int ii = 0; ii < numLayersToCreate; ii++)
{
int widthIndex = widthIndices[ii];
double scaledWidth = UnitUtil.ScaleLength(widths[widthIndex]);
string layerName = "Layer";
string description = null;
string category = null;
int? priority = null;
IFCLogical?isVentilated = null;
int isVentilatedValue;
Material material = document.GetElement(MaterialIds[ii].Item1) as Material;
if (material != null)
{
if (ParameterUtil.GetIntValueFromElement(material, "IfcMaterialLayer.IsVentilated", out isVentilatedValue) != null)
{
if (isVentilatedValue == 0)
{
isVentilated = IFCLogical.False;
}
else if (isVentilatedValue == 1)
{
isVentilated = IFCLogical.True;
}
}
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
layerName = MaterialIds[ii].Item2;
if (string.IsNullOrEmpty(layerName))
{
layerName = "Layer";
}
// Ensure layer name is unique
layerName = NamingUtil.GetUniqueNameWithinSet(layerName, ref layerNameUsed);
description = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Description",
IFCAnyHandleUtil.GetStringAttribute(materialHnds[ii], "Description"));
category = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Category",
IFCAnyHandleUtil.GetStringAttribute(materialHnds[ii], "Category"));
int priorityValue;
if (ParameterUtil.GetIntValueFromElement(material, "IfcMaterialLayer.Priority", out priorityValue) != null)
{
priority = priorityValue;
}
}
}
if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
// Skip component that has zero width (the will be no geometry associated to it
if (MathUtil.IsAlmostZero(scaledWidth))
{
continue;
}
IFCAnyHandle materialConstituent = IFCInstanceExporter.CreateMaterialConstituent(file, materialHnds[ii],
name: layerName, description: description, category: category);
layers.Add(materialConstituent);
IFCAnyHandle layerQtyHnd = IFCInstanceExporter.CreateQuantityLength(file, "Width", description, null, scaledWidth);
totalWidth += scaledWidth;
layerWidthQuantities.Add(new Tuple <string, IFCAnyHandle>(layerName, layerQtyHnd));
}
else
{
IFCAnyHandle materialLayer = IFCInstanceExporter.CreateMaterialLayer(file, materialHnds[ii], scaledWidth, isVentilated,
name: layerName, description: description, category: category, priority: priority);
layers.Add(materialLayer);
}
}
if (layers.Count > 0)
{
Element type = document.GetElement(typeElemId);
string layerSetName = NamingUtil.GetOverrideStringValue(type, "IfcMaterialLayerSet.Name", m_ExporterIFC.GetFamilyName());
string layerSetDesc = NamingUtil.GetOverrideStringValue(type, "IfcMaterialLayerSet.Description", null);
if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
HashSet <IFCAnyHandle> constituents = new HashSet <IFCAnyHandle>(layers);
MaterialLayerSetHandle = IFCInstanceExporter.CreateMaterialConstituentSet(file, constituents, name: layerSetName, description: layerSetDesc);
foreach (Tuple <string, IFCAnyHandle> layerWidthQty in layerWidthQuantities)
{
LayerQuantityWidthHnd.Add(IFCInstanceExporter.CreatePhysicalComplexQuantity(file, layerWidthQty.Item1, null,
new HashSet <IFCAnyHandle>()
{
layerWidthQty.Item2
}, "Layer", null, null));
}
// Finally create the total width as a quantity
LayerQuantityWidthHnd.Add(IFCInstanceExporter.CreateQuantityLength(file, "Width", null, null, totalWidth));
}
else
{
MaterialLayerSetHandle = IFCInstanceExporter.CreateMaterialLayerSet(file, layers, layerSetName, layerSetDesc);
}
ExporterCacheManager.MaterialSetCache.RegisterLayerSet(typeElemId, MaterialLayerSetHandle, this);
}
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(PrimaryMaterialHandle))
{
ExporterCacheManager.MaterialSetCache.RegisterPrimaryMaterialHnd(typeElemId, PrimaryMaterialHandle);
}
}
else
{
MaterialLayerSetHandle = materialLayerSet;
MaterialLayerSetInfo mlsInfo = ExporterCacheManager.MaterialSetCache.FindMaterialLayerSetInfo(typeElemId);
if (mlsInfo != null)
{
MaterialIds = mlsInfo.MaterialIds;
PrimaryMaterialHandle = mlsInfo.PrimaryMaterialHandle;
LayerQuantityWidthHnd = mlsInfo.LayerQuantityWidthHnd;
}
}
return;
}
/// <summary>
/// Exports materials for host object.
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="hostObject">The host object.</param>
/// <param name="elemHnds">The host IFC handles.</param>
/// <param name="geometryElement">The geometry element.</param>
/// <param name="productWrapper">The ProductWrapper.</param>
/// <param name="levelId">The level id.</param>
/// <param name="direction">The IFCLayerSetDirection.</param>
/// <param name="containsBRepGeometry">True if the geometry contains BRep geoemtry. If so, we will export an IfcMaterialList</param>
/// <returns>True if exported successfully, false otherwise.</returns>
public static bool ExportHostObjectMaterials(ExporterIFC exporterIFC, HostObject hostObject,
IList<IFCAnyHandle> elemHnds, GeometryElement geometryElement, ProductWrapper productWrapper,
ElementId levelId, Toolkit.IFCLayerSetDirection direction, bool containsBRepGeometry)
{
if (hostObject == null)
return true; //nothing to do
if (elemHnds == null || (elemHnds.Count == 0))
return true; //nothing to do
IFCFile file = exporterIFC.GetFile();
using (IFCTransaction tr = new IFCTransaction(file))
{
if (productWrapper != null)
productWrapper.ClearFinishMaterials();
double scaledOffset = 0.0, scaledWallWidth = 0.0, wallHeight = 0.0;
Wall wall = hostObject as Wall;
if (wall != null)
{
scaledWallWidth = UnitUtil.ScaleLength(wall.Width);
scaledOffset = -scaledWallWidth / 2.0;
BoundingBoxXYZ boundingBox = wall.get_BoundingBox(null);
if (boundingBox != null)
wallHeight = boundingBox.Max.Z - boundingBox.Min.Z;
}
ElementId typeElemId = hostObject.GetTypeId();
IFCAnyHandle materialLayerSet = ExporterCacheManager.MaterialLayerSetCache.Find(typeElemId);
// Roofs with no components are only allowed one material. We will arbitrarily choose the thickest material.
IFCAnyHandle primaryMaterialHnd = ExporterCacheManager.MaterialLayerSetCache.FindPrimaryMaterialHnd(typeElemId);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(materialLayerSet))
{
HostObjAttributes hostObjAttr = hostObject.Document.GetElement(typeElemId) as HostObjAttributes;
if (hostObjAttr == null)
return true; //nothing to do
List<ElementId> matIds = new List<ElementId>();
List<double> widths = new List<double>();
List<MaterialFunctionAssignment> functions = new List<MaterialFunctionAssignment>();
ElementId baseMatId = CategoryUtil.GetBaseMaterialIdForElement(hostObject);
CompoundStructure cs = hostObjAttr.GetCompoundStructure();
if (cs != null)
{
//TODO: Vertically compound structures are not yet supported by export.
if (!cs.IsVerticallyHomogeneous() && !MathUtil.IsAlmostZero(wallHeight))
cs = cs.GetSimpleCompoundStructure(wallHeight, wallHeight / 2.0);
for (int i = 0; i < cs.LayerCount; ++i)
{
ElementId matId = cs.GetMaterialId(i);
if (matId != ElementId.InvalidElementId)
{
matIds.Add(matId);
}
else
{
matIds.Add(baseMatId);
}
widths.Add(cs.GetLayerWidth(i));
// save layer function into ProductWrapper,
// it's used while exporting "Function" of Pset_CoveringCommon
functions.Add(cs.GetLayerFunction(i));
}
}
if (matIds.Count == 0)
{
matIds.Add(baseMatId);
widths.Add(cs != null ? cs.GetWidth() : 0);
functions.Add(MaterialFunctionAssignment.None);
}
// We can't create IfcMaterialLayers without creating an IfcMaterialLayerSet. So we will simply collate here.
IList<IFCAnyHandle> materialHnds = new List<IFCAnyHandle>();
IList<int> widthIndices = new List<int>();
double thickestLayer = 0.0;
for (int ii = 0; ii < matIds.Count; ++ii)
{
// Require positive width for IFC2x3 and before, and non-negative width for IFC4.
if (widths[ii] < -MathUtil.Eps())
continue;
bool almostZeroWidth = MathUtil.IsAlmostZero(widths[ii]);
if (ExporterCacheManager.ExportOptionsCache.FileVersion != IFCVersion.IFC4 && almostZeroWidth)
continue;
if (almostZeroWidth)
widths[ii] = 0.0;
IFCAnyHandle materialHnd = CategoryUtil.GetOrCreateMaterialHandle(exporterIFC, matIds[ii]);
if (primaryMaterialHnd == null || (widths[ii] > thickestLayer))
{
primaryMaterialHnd = materialHnd;
thickestLayer = widths[ii];
}
widthIndices.Add(ii);
materialHnds.Add(materialHnd);
if ((productWrapper != null) && (functions[ii] == MaterialFunctionAssignment.Finish1 || functions[ii] == MaterialFunctionAssignment.Finish2))
{
productWrapper.AddFinishMaterial(materialHnd);
}
}
int numLayersToCreate = widthIndices.Count;
if (numLayersToCreate == 0)
return false;
if (!containsBRepGeometry)
{
IList<IFCAnyHandle> layers = new List<IFCAnyHandle>(numLayersToCreate);
for (int ii = 0; ii < numLayersToCreate; ii++)
{
int widthIndex = widthIndices[ii];
double scaledWidth = UnitUtil.ScaleLength(widths[widthIndex]);
IFCAnyHandle materialLayer = IFCInstanceExporter.CreateMaterialLayer(file, materialHnds[ii], scaledWidth, null);
layers.Add(materialLayer);
}
string layerSetName = exporterIFC.GetFamilyName();
materialLayerSet = IFCInstanceExporter.CreateMaterialLayerSet(file, layers, layerSetName);
ExporterCacheManager.MaterialLayerSetCache.Register(typeElemId, materialLayerSet);
ExporterCacheManager.MaterialLayerSetCache.RegisterPrimaryMaterialHnd(typeElemId, primaryMaterialHnd);
}
else
{
foreach (IFCAnyHandle elemHnd in elemHnds)
{
CategoryUtil.CreateMaterialAssociations(exporterIFC, elemHnd, matIds);
}
}
}
// IfcMaterialLayerSetUsage is not supported for IfcWall, only IfcWallStandardCase.
IFCAnyHandle layerSetUsage = null;
for (int ii = 0; ii < elemHnds.Count; ii++)
{
IFCAnyHandle elemHnd = elemHnds[ii];
if (IFCAnyHandleUtil.IsNullOrHasNoValue(elemHnd))
continue;
SpaceBoundingElementUtil.RegisterSpaceBoundingElementHandle(exporterIFC, elemHnd, hostObject.Id, levelId);
if (containsBRepGeometry)
continue;
HashSet<IFCAnyHandle> relDecomposesSet = IFCAnyHandleUtil.GetRelDecomposes(elemHnd);
IList<IFCAnyHandle> subElemHnds = null;
if (relDecomposesSet != null && relDecomposesSet.Count == 1)
{
IFCAnyHandle relAggregates = relDecomposesSet.First();
if (IFCAnyHandleUtil.IsTypeOf(relAggregates, IFCEntityType.IfcRelAggregates))
subElemHnds = IFCAnyHandleUtil.GetAggregateInstanceAttribute<List<IFCAnyHandle>>(relAggregates, "RelatedObjects");
}
bool hasSubElems = (subElemHnds != null && subElemHnds.Count != 0);
bool isRoof = IFCAnyHandleUtil.IsTypeOf(elemHnd, IFCEntityType.IfcRoof);
if (!hasSubElems && !isRoof && !IFCAnyHandleUtil.IsTypeOf(elemHnd, IFCEntityType.IfcWall))
{
if (layerSetUsage == null)
{
bool flipDirSense = true;
if (wall != null)
{
// if we have flipped the center curve on export, we need to take that into account here.
// We flip the center curve on export if it is an arc and it has a negative Z direction.
LocationCurve locCurve = wall.Location as LocationCurve;
if (locCurve != null)
{
Curve curve = locCurve.Curve;
Plane defPlane = new Plane(XYZ.BasisX, XYZ.BasisY, XYZ.Zero);
bool curveFlipped = GeometryUtil.MustFlipCurve(defPlane, curve);
flipDirSense = !(wall.Flipped ^ curveFlipped);
}
}
else if (hostObject is Floor)
{
flipDirSense = false;
}
double offsetFromReferenceLine = flipDirSense ? -scaledOffset : scaledOffset;
IFCDirectionSense sense = flipDirSense ? IFCDirectionSense.Negative : IFCDirectionSense.Positive;
layerSetUsage = IFCInstanceExporter.CreateMaterialLayerSetUsage(file, materialLayerSet, direction, sense, offsetFromReferenceLine);
}
ExporterCacheManager.MaterialLayerRelationsCache.Add(layerSetUsage, elemHnd);
}
else
{
if (hasSubElems)
{
foreach (IFCAnyHandle subElemHnd in subElemHnds)
{
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(subElemHnd))
ExporterCacheManager.MaterialLayerRelationsCache.Add(materialLayerSet, subElemHnd);
}
}
else if (!isRoof)
{
ExporterCacheManager.MaterialLayerRelationsCache.Add(materialLayerSet, elemHnd);
}
else if (primaryMaterialHnd != null)
{
ExporterCacheManager.MaterialLayerRelationsCache.Add(primaryMaterialHnd, elemHnd);
}
}
}
tr.Commit();
return true;
}
}
private void GenerateIFCObjectsIfNeeded()
{
if (m_needToGenerateIFCObjects)
{
m_needToGenerateIFCObjects = false;
}
else
{
return;
}
IFCAnyHandle materialLayerSet = null;
if (m_ProductWrapper != null && !m_ProductWrapper.ToNative().IsValidObject)
{
m_ProductWrapper = null;
}
m_ProductWrapper?.ClearFinishMaterials();
// We can't create IfcMaterialLayers without creating an IfcMaterialLayerSet. So we will simply collate here.
IList <IFCAnyHandle> materialHnds = new List <IFCAnyHandle>();
IList <int> widthIndices = new List <int>();
double thickestLayer = 0.0;
for (int ii = 0; ii < MaterialIds.Count; ++ii)
{
// Require positive width for IFC2x3 and before, and non-negative width for IFC4.
if (MaterialIds[ii].m_matWidth < -MathUtil.Eps())
{
continue;
}
bool almostZeroWidth = MathUtil.IsAlmostZero(MaterialIds[ii].m_matWidth);
if (!ExporterCacheManager.ExportOptionsCache.ExportAs4 && almostZeroWidth)
{
continue;
}
if (almostZeroWidth)
{
MaterialIds[ii].m_matWidth = 0.0;
}
IFCAnyHandle materialHnd = CategoryUtil.GetOrCreateMaterialHandle(m_ExporterIFC, MaterialIds[ii].m_baseMatId);
if (m_PrimaryMaterialHandle == null || (MaterialIds[ii].m_matWidth > thickestLayer))
{
m_PrimaryMaterialHandle = materialHnd;
thickestLayer = MaterialIds[ii].m_matWidth;
}
widthIndices.Add(ii);
materialHnds.Add(materialHnd);
if ((m_ProductWrapper != null) && (MaterialIds[ii].m_function == MaterialFunctionAssignment.Finish1 || MaterialIds[ii].m_function == MaterialFunctionAssignment.Finish2))
{
m_ProductWrapper.AddFinishMaterial(materialHnd);
}
}
int numLayersToCreate = widthIndices.Count;
if (numLayersToCreate == 0)
{
m_MaterialLayerSetHandle = materialLayerSet;
return;
}
// If it is a single material, check single material override (only IfcMaterial without IfcMaterialLayerSet with only 1 member)
if (numLayersToCreate == 1 && ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
m_MaterialLayerSetHandle = ExporterUtil.GetSingleMaterial(m_ExporterIFC, m_Element,
MaterialIds[0].m_baseMatId) ?? materialHnds[0];
return;
}
IFCFile file = m_ExporterIFC.GetFile();
Document document = ExporterCacheManager.Document;
IList <IFCAnyHandle> layers = new List <IFCAnyHandle>(numLayersToCreate);
IList <Tuple <string, IFCAnyHandle> > layerWidthQuantities = new List <Tuple <string, IFCAnyHandle> >();
HashSet <string> layerNameUsed = new HashSet <string>();
double totalWidth = 0.0;
for (int ii = 0; ii < numLayersToCreate; ii++)
{
int widthIndex = widthIndices[ii];
double scaledWidth = UnitUtil.ScaleLength(MaterialIds[widthIndex].m_matWidth);
string layerName = "Layer";
string description = null;
string category = null;
int? priority = null;
IFCLogical?isVentilated = null;
int isVentilatedValue;
Material material = document.GetElement(MaterialIds[ii].m_baseMatId) as Material;
if (material != null)
{
if (ParameterUtil.GetIntValueFromElement(material, "IfcMaterialLayer.IsVentilated", out isVentilatedValue) != null)
{
if (isVentilatedValue == 0)
{
isVentilated = IFCLogical.False;
}
else if (isVentilatedValue == 1)
{
isVentilated = IFCLogical.True;
}
}
if (ExporterCacheManager.ExportOptionsCache.ExportAs4)
{
layerName = MaterialIds[ii].m_layerName;
if (string.IsNullOrEmpty(layerName))
{
layerName = "Layer";
}
// Ensure layer name is unique
layerName = NamingUtil.GetUniqueNameWithinSet(layerName, ref layerNameUsed);
description = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Description",
IFCAnyHandleUtil.GetStringAttribute(materialHnds[ii], "Description"));
category = NamingUtil.GetOverrideStringValue(material, "IfcMaterialLayer.Category",
IFCAnyHandleUtil.GetStringAttribute(materialHnds[ii], "Category"));
int priorityValue;
if (ParameterUtil.GetIntValueFromElement(material, "IfcMaterialLayer.Priority", out priorityValue) != null)
{
priority = priorityValue;
}
}
}
if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
// Skip component that has zero width (the will be no geometry associated to it
if (MathUtil.IsAlmostZero(scaledWidth))
{
continue;
}
IFCAnyHandle materialConstituent = IFCInstanceExporter.CreateMaterialConstituent(file, materialHnds[ii],
name: layerName, description: description, category: category);
layers.Add(materialConstituent);
IFCAnyHandle layerQtyHnd = IFCInstanceExporter.CreateQuantityLength(file, "Width", description, null, scaledWidth);
totalWidth += scaledWidth;
layerWidthQuantities.Add(new Tuple <string, IFCAnyHandle>(layerName, layerQtyHnd));
}
else
{
IFCAnyHandle materialLayer = IFCInstanceExporter.CreateMaterialLayer(file, materialHnds[ii], scaledWidth, isVentilated,
name: layerName, description: description, category: category, priority: priority);
layers.Add(materialLayer);
}
}
ElementId typeElemId = m_Element.GetTypeId();
if (layers.Count > 0)
{
Element type = document.GetElement(typeElemId);
string layerSetName = NamingUtil.GetOverrideStringValue(type, "IfcMaterialLayerSet.Name", m_ExporterIFC.GetFamilyName());
string layerSetDesc = NamingUtil.GetOverrideStringValue(type, "IfcMaterialLayerSet.Description", null);
if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView)
{
HashSet <IFCAnyHandle> constituents = new HashSet <IFCAnyHandle>(layers);
m_MaterialLayerSetHandle = IFCInstanceExporter.CreateMaterialConstituentSet(file, constituents, name: layerSetName, description: layerSetDesc);
foreach (Tuple <string, IFCAnyHandle> layerWidthQty in layerWidthQuantities)
{
m_LayerQuantityWidthHnd.Add(IFCInstanceExporter.CreatePhysicalComplexQuantity(file, layerWidthQty.Item1, null,
new HashSet <IFCAnyHandle>()
{
layerWidthQty.Item2
}, "Layer", null, null));
}
// Finally create the total width as a quantity
m_LayerQuantityWidthHnd.Add(IFCInstanceExporter.CreateQuantityLength(file, "Width", null, null, totalWidth));
}
else
{
m_MaterialLayerSetHandle = IFCInstanceExporter.CreateMaterialLayerSet(file, layers, layerSetName, layerSetDesc);
}
ExporterCacheManager.MaterialSetCache.RegisterLayerSet(typeElemId, m_MaterialLayerSetHandle, this);
}
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(m_PrimaryMaterialHandle))
{
ExporterCacheManager.MaterialSetCache.RegisterPrimaryMaterialHnd(typeElemId, m_PrimaryMaterialHandle);
}
}