public void ReadRecords(IProgressTracker tracker)
{
lock (_fsMainFile)
{
if (_isLoaded)
{
return;
}
try
{
_dbfReader = new DbaseReader(_dbffile);
_featureCount = 0;
_features = new List <Feature>();
while (_fsMainFile.Position < _fileLength)
{
//Record header
int oid = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));
int contentSize = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));//16bit 字为单位
//if (contentSize < 0)
// Console.WriteLine("");
byte[] contentBytes = _brMainFile.ReadBytes(contentSize * 2);
object obj = BytesToFeature(contentBytes, oid);
_features.Add(obj as Feature);
//
_featureCount++;
}
if (_argOfLeveling != null && _argOfLeveling.Enabled && _shapeType == enumShapeType.Point)
{
//int bTime = Environment.TickCount;
using (LevelAdjuster set = new LevelAdjuster())
{
set.BeginLevel = _argOfLeveling.BeginLevel;
set.GridSize = _argOfLeveling.GridSize;
set.Features = _features.ToArray();
set.Do();
}
//int eTime = Environment.TickCount - bTime;
}
}
catch
{
throw;
}
finally
{
_isLoaded = true;
}
}
}
private void AutoLeveling(Feature[] features)
{
if (_argOfLeveling != null && _argOfLeveling.Enabled && _shapeType == enumShapeType.Point)
{
//int bTime = Environment.TickCount;
using (LevelAdjuster set = new LevelAdjuster())
{
set.BeginLevel = _argOfLeveling.BeginLevel;
set.GridSize = _argOfLeveling.GridSize;
set.Features = features.ToArray();
set.Do();
}
//int eTime = Environment.TickCount - bTime;
}
}
public Feature[] GetFeatures_NEW(Envelope envelope)
{
lock (lockObject)
{
if (envelope == null)
{
return(null);
}
if (_features == null && _featureCount == -1)
{
ReadRecords(null);
}
Envelope validExtent = _envelope.IntersectWith(envelope);
if (validExtent == null)
{
return(null);
}
List <Feature> retFets = new List <Feature>();
FetchFeatures((fet) =>
{
if (validExtent.Contains(fet.Geometry.Envelope))
{
retFets.Add(fet);
}
else
{
if (fet.Geometry.Envelope.IsInteractived(validExtent))
{
retFets.Add(fet);
fet.IsRepeatedOverGrids = true;
}
}
}
);
if (_argOfLeveling != null && _argOfLeveling.Enabled && _shapeType == enumShapeType.Point)
{
using (LevelAdjuster set = new LevelAdjuster())
{
set.BeginLevel = _argOfLeveling.BeginLevel;
set.GridSize = _argOfLeveling.GridSize;
set.Features = retFets.ToArray();
set.Do();
}
}
return(retFets.Count > 0 ? retFets.ToArray() : null);
}
}
public void ReLeveling()
{
if (_grids == null || _grids.Count == 0)
{
return;
}
using (LevelAdjuster set = new LevelAdjuster())
{
int n = _grids.Count;
for (int i = n - 1; i >= 0; i--)
{
set.Features = _grids[i].VectorFeatures.ToArray();
set.BeginLevel = _dataSource.ArgOfLeveling.BeginLevel;
set.GridSize = _dataSource.ArgOfLeveling.GridSize;
set.Do();
}
}
}