public static B5dProjectNode Convert(IIfcObjectDefinition ifcObject)
{
var ifcObjectGuid = ifcObject.GlobalId.Value.ToString();
var node = B5dProjectNode.GetNodeWithIfcGuid(ifcObjectGuid);
if (node != null)
{
return(node);
}
B5dProjectNode b5dNode = new B5dProjectNode()
{
TypeSpecifier = ifcObject.GetType().Name,
Name = ifcObject.Name,
WhatIs = new B5dPhysical()
{
TypeSpecifier = ifcObject.GetType().Name,
Name = ifcObject.Name
}
};
IfcRoot b5dIfcObject = new IfcRoot()
{
ExternalIfcGlobalId = ifcObjectGuid,
B5dObject = b5dNode
};
return(b5dNode);
}
public static GltfRef TryCreatingGltfRef(string ifcObjectGuid, B5dProjectNode project, B5dObject b5dObject)
{
var existingRef = DbLinq.Objects <GltfRef>().FirstOrDefault(o => o.BelongsTo == b5dObject);
if (existingRef != null)
{
return(existingRef);
}
string documentsDirectory = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments);
string conversionPath = $"{documentsDirectory}\\Conversions";
var projectName = project.Name;
var b5dObjectType = b5dObject.TypeSpecifier.ToLower();
b5dObjectType = b5dObjectType.Replace("ifc", "");
// The ifcTo3DTiles conversion renames WallStandardCase to Wall
b5dObjectType = b5dObjectType.Replace("wallstandardcase", "wall");
var ifcDirectory = $"{conversionPath}\\Conversion_{projectName}\\IFCs";
var files = Directory.GetFiles(ifcDirectory);
var ifcFiles = files.Where(f => f.ToLower().Contains(b5dObjectType));
if (ifcFiles.Count() == 0)
{
return(null);
}
foreach (string ifcFilePath in ifcFiles)
{
var ifcModel = IfcStore.Open(ifcFilePath);
var ifcObject = ifcModel.Instances.FirstOrDefault() as IIfcObject;
if (ifcObject.GlobalId == ifcObjectGuid)
{
var gltfFilepath = ifcFilePath.Replace("IFCs", "GLTFs").Replace(".ifc", ".gltf");
FileStream gltfFile = File.Open(gltfFilepath, FileMode.Open);
var filename = Path.GetFileName(gltfFilepath);
if (ifcObject != null && gltfFile != null)
{
var fileRef = new GltfRef()
{
BelongsTo = b5dObject,
Extension = "gltf",
FileId = ifcObjectGuid,
FileName = filename,
MimeType = "model/gltf+json",
FileSize = gltfFilepath.Length,
};
return(fileRef);
}
break;
}
}
return(null);
}
public B5dProjectNode BuildTree(B5dObject b5dParent, IIfcObjectDefinition ifcParent, IIfcObjectDefinition ifcChild)
{
B5dProjectNode b5dChild = IfcObjectConverter.Convert(ifcChild);
if (ifcChild is IIfcProject)
{
currentProject = b5dChild;
}
else
{
GltfRef.TryCreatingGltfRef(ifcChild.GlobalId.ToString(), currentProject, b5dChild);
}
if (b5dParent != null)
{
B5dProjectNodeChild ChildRelationship = B5dProjectNodeChild.CreateNodeChildRelation(b5dParent, b5dChild);
}
if (ifcChild is IIfcObject ifcObject)
{
// Use containsElements to recursively create nodes for Window, Door, Slab, Wall etc
foreach (var ifcSpatialElement in RelContainedInSpatialStructure.GetElementsIn(ifcObject))
{
BuildTree(b5dChild, ifcChild, ifcSpatialElement);
}
// Use isDecomposedy to recursively create nodes for Project, Site, Building, Story and Space
foreach (var ifcSpatialStructure in RelAggregates.GetSpatialStructuresIn(ifcObject))
{
BuildTree(b5dChild, ifcChild, ifcSpatialStructure);
}
// Use isDefinedBy to convert all of the ifcProperties
PropertyConverter.ConvertProperties(ifcObject, b5dChild);
}
return(b5dChild);
}