public EsentGeometryStoreReader(EsentModel esentModel)
{
_esentModel = esentModel;
_shapeGeometryCursor = _esentModel.GetShapeGeometryTable();
_shapeInstanceCursor = _esentModel.GetShapeInstanceTable();
_shapeGeometryTransaction = _shapeGeometryCursor.BeginReadOnlyTransaction();
_shapeInstanceTransaction = _shapeInstanceCursor.BeginReadOnlyTransaction();
_regionsList = new XbimContextRegionCollection();
IXbimShapeGeometryData regions = new XbimRegionCollection();
if (_shapeGeometryCursor.TryMoveFirstRegion(ref regions))
{
do
{
_regionsList.Add((XbimRegionCollection)regions);
regions = new XbimRegionCollection();
} while (_shapeGeometryCursor.TryMoveNextRegion(ref regions));
}
if (!_regionsList.Any()) //we might have an old xbim database regions were stored in the geometry table
{
var legacyCursor = _esentModel.GetGeometryTable();
using (var txn = legacyCursor.BeginReadOnlyTransaction())
{
foreach (var regionData in legacyCursor.GetGeometryData(Xbim.Common.Geometry.XbimGeometryType.Region))
{
_regionsList.Add(XbimRegionCollection.FromArray(regionData.ShapeData));
}
}
_esentModel.FreeTable(legacyCursor);
}
_contextIds = new HashSet <int>(ContextIds);
}
/// <summary>
/// Works only on models version 1.
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
private static XbimRegion GetLargestRegion(XbimModel model)
{
//get the region data should only be one
var project = model.IfcProject;
var projectId = 0;
if (project != null)
{
projectId = project.EntityLabel;
}
// in version 1.0 there should be only 1 record in the database for the project (storing multiple regions).
var regionData = model.GetGeometryData(projectId, XbimGeometryType.Region).FirstOrDefault();
if (regionData == null)
{
return(null);
}
var regions = XbimRegionCollection.FromArray(regionData.ShapeData);
return(regions.MostPopulated()); // this then returns
}