/// <summary>
/// Processes an IfcFeatureElementSubtraction object.
/// </summary>
/// <param name="ifcFeatureElementSubtraction">The IfcFeatureElementSubtraction handle.</param>
/// <returns>The iFCFeatureElementSubtraction object.</returns>
public static IFCFeatureElementSubtraction ProcessIFCFeatureElementSubtraction(IFCAnyHandle ifcFeatureElementSubtraction)
{
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcFeatureElementSubtraction))
{
Importer.TheLog.LogNullError(IFCEntityType.IfcFeatureElementSubtraction);
return(null);
}
try
{
IFCEntity cachedFeatureElementSubtraction;
if (IFCImportFile.TheFile.EntityMap.TryGetValue(ifcFeatureElementSubtraction.StepId, out cachedFeatureElementSubtraction))
{
return(cachedFeatureElementSubtraction as IFCFeatureElementSubtraction);
}
if (IFCAnyHandleUtil.IsValidSubTypeOf(ifcFeatureElementSubtraction, IFCEntityType.IfcOpeningElement))
{
return(IFCOpeningElement.ProcessIFCOpeningElement(ifcFeatureElementSubtraction));
}
return(new IFCFeatureElementSubtraction(ifcFeatureElementSubtraction));
}
catch (Exception ex)
{
HandleError(ex.Message, ifcFeatureElementSubtraction, true);
return(null);
}
}
/// <summary>
/// Processes an IfcOpeningElement object.
/// </summary>
/// <param name="ifcOpeningElement">The IfcOpeningElement handle.</param>
/// <returns>The IFCOpeningElement object.</returns>
public static IFCOpeningElement ProcessIFCOpeningElement(IFCAnyHandle ifcOpeningElement)
{
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcOpeningElement))
{
IFCImportFile.TheLog.LogNullError(IFCEntityType.IfcOpeningElement);
return(null);
}
//sub classes not handled yet!
IFCEntity openingElement;
if (!IFCImportFile.TheFile.EntityMap.TryGetValue(ifcOpeningElement.StepId, out openingElement))
{
openingElement = new IFCOpeningElement(ifcOpeningElement);
}
return(openingElement as IFCOpeningElement);
}
/// <summary>
/// Creates or populates Revit elements based on the information contained in this class.
/// </summary>
/// <param name="doc">The document.</param>
protected override void Create(Document doc)
{
bool preventInstances = false;
IFCElement element = this as IFCElement;
if (element != null)
{
IFCOpeningElement openingElement = element as IFCOpeningElement;
if (openingElement != null)
{
preventInstances = true;
}
foreach (IFCFeatureElement opening in element.Openings)
{
try
{
preventInstances = true;
// Create the actual Revit element based on the IFCFeatureElement here.
ElementId openingId = CreateElement(doc, opening);
// This gets around the issue that the Boolean operation between the void(s) in the IFCFeatureElement and
// the solid(s) in the IFCElement may use the Graphics Style of the voids in the resulting Solid(s), meaning
// that some faces may disappear when we turn off the visibility of IfcOpeningElements.
IList <IFCSolidInfo> voids = IFCElement.CloneElementGeometry(doc, opening, this, true);
if (voids != null)
{
foreach (IFCSolidInfo voidGeom in voids)
{
Voids.Add(voidGeom);
}
}
}
catch (Exception ex)
{
Importer.TheLog.LogError(opening.Id, ex.Message, false);
}
}
}
if (HasValidTopLevelGeometry())
{
using (IFCImportShapeEditScope shapeEditScope = IFCImportShapeEditScope.Create(doc, this))
{
shapeEditScope.GraphicsStyleId = GraphicsStyleId;
shapeEditScope.CategoryId = CategoryId;
shapeEditScope.PreventInstances = preventInstances;
// The name can be added as well. but it is usually less useful than 'oid'
string myId = GlobalId; // + "(" + Name + ")";
Transform lcs = IFCImportFile.TheFile.IFCProject.WorldCoordinateSystem;
if (lcs == null)
{
lcs = (ObjectLocation != null) ? ObjectLocation.TotalTransform : Transform.Identity;
}
else if (ObjectLocation != null)
{
lcs = lcs.Multiply(ObjectLocation.TotalTransform);
}
ProductRepresentation.CreateProductRepresentation(shapeEditScope, lcs, lcs, myId);
int numSolids = Solids.Count;
int numVoids = Voids.Count;
if ((numSolids > 0) && (numVoids > 0))
{
// This may be different than before, with the addition of solids from FamilyInstances.
numSolids = Solids.Count;
// Attempt to cut each solid with each void.
for (int solidIdx = 0; solidIdx < numSolids; solidIdx++)
{
// We only cut body representation items.
if (Solids[solidIdx].RepresentationType != IFCRepresentationIdentifier.Body)
{
continue;
}
if (!(Solids[solidIdx].GeometryObject is Solid))
{
string typeName = (Solids[solidIdx].GeometryObject is Mesh) ? "mesh" : "instance";
Importer.TheLog.LogError(Id, "Can't cut " + typeName + " geometry, ignoring " + numVoids + " void(s).", false);
continue;
}
for (int voidIdx = 0; voidIdx < numVoids; voidIdx++)
{
if (!(Voids[voidIdx].GeometryObject is Solid))
{
Importer.TheLog.LogError(Id, "Can't cut Solid geometry with a Mesh (# " + Voids[voidIdx].Id + "), ignoring.", false);
continue;
}
Solids[solidIdx].GeometryObject =
IFCGeometryUtil.ExecuteSafeBooleanOperation(Solids[solidIdx].Id, Voids[voidIdx].Id,
Solids[solidIdx].GeometryObject as Solid, Voids[voidIdx].GeometryObject as Solid,
BooleanOperationsType.Difference, null);
if ((Solids[solidIdx].GeometryObject as Solid).Faces.IsEmpty)
{
Solids.RemoveAt(solidIdx);
solidIdx--;
numSolids--;
break;
}
}
}
}
bool addedCurves = shapeEditScope.AddPlanViewCurves(FootprintCurves, Id);
if ((numSolids > 0 || addedCurves))
{
if (GlobalId != null)
{
// If the GlobalId is null, this is a fake IfcProduct that we don't want to create into a DirectShape, or
// add to the caches in any way. We only wanted to gather its geometry.
DirectShape shape = Importer.TheCache.UseElementByGUID <DirectShape>(doc, GlobalId);
if (shape == null)
{
shape = IFCElementUtil.CreateElement(doc, CategoryId, GlobalId, null, Id);
}
List <GeometryObject> directShapeGeometries = new List <GeometryObject>();
foreach (IFCSolidInfo geometryObject in Solids)
{
// We need to check if the solid created is good enough for DirectShape. If not, warn and use a fallback Mesh.
GeometryObject currObject = geometryObject.GeometryObject;
if (currObject is Solid)
{
Solid solid = currObject as Solid;
if (!shape.IsValidGeometry(solid))
{
Importer.TheLog.LogWarning(Id, "Couldn't create valid solid, reverting to mesh.", false);
directShapeGeometries.AddRange(IFCGeometryUtil.CreateMeshesFromSolid(solid));
currObject = null;
}
}
if (currObject != null)
{
directShapeGeometries.Add(currObject);
}
}
// We will use the first IfcTypeObject id, if it exists. In general, there should be 0 or 1.
ElementId typeId = ElementId.InvalidElementId;
foreach (IFCTypeObject typeObject in TypeObjects)
{
if (typeObject.IsValidForCreation && typeObject.CreatedElementId != ElementId.InvalidElementId)
{
typeId = typeObject.CreatedElementId;
break;
}
}
shape.SetShape(directShapeGeometries);
shapeEditScope.SetPlanViewRep(shape);
if (typeId != ElementId.InvalidElementId)
{
shape.SetTypeId(typeId);
}
PresentationLayerNames.UnionWith(shapeEditScope.PresentationLayerNames);
CreatedElementId = shape.Id;
CreatedGeometry = directShapeGeometries;
}
}
}
}
else
{
if (this is IFCElement || this is IFCGrid)
{
IList <IFCEntity> visitedEntities = new List <IFCEntity>();
visitedEntities.Add(this);
if (!HasValidSubElementGeometry(visitedEntities))
{
// We will not warn if this is an IfcSpatialStructureElement; those aren't expected to have their own geometry.
Importer.TheLog.LogWarning(Id, "There is no valid geometry for this " + EntityType.ToString() + "; entity will not be built.", false);
}
}
}
base.Create(doc);
}
/// <summary>
/// Processes an IfcOpeningElement object.
/// </summary>
/// <param name="ifcOpeningElement">The IfcOpeningElement handle.</param>
/// <returns>The IFCOpeningElement object.</returns>
public static IFCOpeningElement ProcessIFCOpeningElement(IFCAnyHandle ifcOpeningElement)
{
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcOpeningElement))
{
Importer.TheLog.LogNullError(IFCEntityType.IfcOpeningElement);
return null;
}
//sub classes not handled yet!
IFCEntity openingElement;
if (!IFCImportFile.TheFile.EntityMap.TryGetValue(ifcOpeningElement.StepId, out openingElement))
openingElement = new IFCOpeningElement(ifcOpeningElement);
return (openingElement as IFCOpeningElement);
}
