public XbimReferencedModel(IIfcDocumentInformation documentInformation)
{
DocumentInformation = documentInformation;
if (!File.Exists(documentInformation.Name))
{
throw new XbimException("Reference model not found:" + documentInformation.Name);
}
try
{
_model = IfcStore.Open(documentInformation.Name);
}
catch (Exception)
{
throw new XbimException("Unable to open reference model: " + documentInformation.Name);
}
}
public XbimReferencedModel(IIfcDocumentInformation documentInformation)
{
DocumentInformation = documentInformation;
// for legacy purposes we should be able to load files from the name inside the document information
// but the correct approach seems to be to have that data using the HasDocumentReferences property:
// in the specs we read that
// "The actual content of the document is not defined in IFC ; instead, it can be found following the reference given to IfcDocumentReference."
//
var searchPaths = new List <string>();
if (documentInformation.Model is IfcStore)
{
var referencingStore = documentInformation.Model as IfcStore;
var fi = new FileInfo(referencingStore.FileName);
searchPaths.Add(fi.DirectoryName);
}
var headerFileName = documentInformation.Model?.Header?.FileName?.Name;
if (Path.IsPathRooted(headerFileName))
{
searchPaths.Add(Path.GetDirectoryName(headerFileName));
}
// we will use the first valid document reference in a list that is evaluate as absolute or relative.
//
var candidates = DocumentInformation.HasDocumentReferences.Select(x => x.Location).ToList();
candidates.Add(documentInformation.Name.ToString()); // this is for legacy in xbim federations
string resourceReference = string.Empty;
// evaluating absolute path
foreach (var candidate in candidates)
{
var thisCandidate = candidate;
// check if can be found as is
if (File.Exists(thisCandidate))
{
resourceReference = thisCandidate;
break;
}
// check if it can be relative
if (!Path.IsPathRooted(candidate))
{
foreach (var path in searchPaths)
{
thisCandidate = Path.Combine(
path, candidate
);
if (File.Exists(thisCandidate))
{
resourceReference = thisCandidate;
goto StopSearch;
}
}
}
}
StopSearch:
if (string.IsNullOrEmpty(resourceReference))
{
throw new XbimException($"Reference model not found for IfcDocumentInformation #{documentInformation.EntityLabel}.");
}
try
{
_model = IfcStore.Open(resourceReference);
}
catch (Exception ex)
{
throw new XbimException("Error opening referenced model: " + resourceReference, ex);
}
}
