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;
}
}
}
public void FetchFeatures(Action <Feature> action)
{
using (_dbfReader = new DbaseReader(_dbffile))
{
_fsMainFile.Seek(_fileHeaderSize, SeekOrigin.Begin);
while (_fsMainFile.Position < _fileLength)
{
int oid = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));
int contentSize = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));//16bit 字为单位
byte[] contentBytes = _brMainFile.ReadBytes(contentSize * 2);
object obj = BytesToFeature(contentBytes, oid);
action(obj as Feature);
}
}
}
private Feature ReadFirstFromFile()
{
using (_dbfReader = new DbaseReader(_dbffile))
{
_fsMainFile.Seek(_fileHeaderSize, SeekOrigin.Begin);
while (_fsMainFile.Position < _fileLength)
{
int oid = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));
int contentSize = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));//16bit 字为单位
byte[] contentBytes = _brMainFile.ReadBytes(contentSize * 2);
object obj = BytesToFeature(contentBytes, oid);
return(obj as Feature);
}
return(null);
}
}
public Feature[] FetchFeatures()
{
using (_dbfReader = new DbaseReader(_dbffile))
{
_fsMainFile.Seek(_fileHeaderSize, SeekOrigin.Begin);
List <Feature> retFeatures = new List <Feature>();
while (_fsMainFile.Position < _fileLength)
{
int oid = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));
int contentSize = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));//16bit 字为单位
byte[] contentBytes = _brMainFile.ReadBytes(contentSize * 2);
object obj = BytesToFeature(contentBytes, oid);
retFeatures.Add(obj as Feature);
}
return(retFeatures.Count > 0 ? retFeatures.ToArray() : null);
}
}
