private int GetRecordLength(IFeature feature)
{
var geometryBytes = new List <byte>();
var geometryType = feature.GeometryType;
geometryBytes.AddRange(
BitConverter
.GetBytes((int)geometryType)
.Reverse()
);
switch (geometryType)
{
case GeometryType.Point:
geometryBytes.AddRange(
GeometryToBytes
.GetPointBytes(feature.Geometry.BasicGeometry)
);
break;
case GeometryType.MultiPoint:
geometryBytes.AddRange(
GeometryToBytes
.GetMultiPointBytes(feature.Geometry.BasicGeometry)
);
break;
case GeometryType.PolyLine:
geometryBytes.AddRange(
GeometryToBytes
.GetPolyLineBytes(feature.Geometry.BasicGeometry)
);
break;
case GeometryType.Polygon:
geometryBytes.AddRange(
GeometryToBytes
.GetPolygonBytes(feature.Geometry.BasicGeometry)
);
break;
default:
break;
}
var recordLength = geometryBytes.Count + 8;
return(recordLength);
}
public int WriterRecord(IFeature feature)
{
var geometryBytes = new List <byte>();
var geometryType = feature.GeometryType;
if (geometryType == GeometryType.MultiPolyLine)
{
geometryBytes.AddRange(
BitConverter
.GetBytes((int)GeometryType.PolyLine)
);
}
else if (geometryType == GeometryType.MultiPolygon)
{
geometryBytes.AddRange(
BitConverter
.GetBytes((int)GeometryType.Polygon)
);
}
else
{
geometryBytes.AddRange(
BitConverter
.GetBytes((int)geometryType)
);
}
switch (geometryType)
{
case GeometryType.Point:
geometryBytes.AddRange(
GeometryToBytes
.GetPointBytes(feature.Geometry.BasicGeometry)
);
break;
case GeometryType.MultiPoint:
geometryBytes.AddRange(
GeometryToBytes
.GetMultiPointBytes(feature.Geometry.BasicGeometry)
);
break;
case GeometryType.PolyLine:
geometryBytes.AddRange(
GeometryToBytes
.GetPolyLineBytes(feature.Geometry.BasicGeometry)
);
break;
case GeometryType.MultiPolyLine:
geometryBytes.AddRange(
GeometryToBytes
.GetMultiPolyLineBytes(feature.Geometry.BasicGeometry)
);
break;
case GeometryType.Polygon:
geometryBytes.AddRange(
GeometryToBytes
.GetPolygonBytes(feature.Geometry.BasicGeometry)
);
break;
default:
break;
}
var recordList = new List <byte>();
recordList.AddRange(BigOrderBitConverter.GetBytes(feature.Fid + 1));
var recordLength = geometryBytes.Count + 8;
recordList.AddRange(BigOrderBitConverter.GetBytes(geometryBytes.Count / 2));
recordList.AddRange(geometryBytes);
_shpWriterStream.Write(recordList.ToArray());
_fileLength += recordList.Count;
return(recordList.Count);
}