private int GetPointCountByMultiPoint(FileStream fs, BinaryReader br, int oid)
{
int pointCount = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
//fs.Seek(pointCount * 2 * 8, SeekOrigin.Current);
return(pointCount);
}
private int GetPointCount(byte[] contentBytes, int oid, FileStream fs)
{
using (MemoryStream ms = new MemoryStream(contentBytes))
{
using (BinaryReader br = new BinaryReader(ms))
{
enumShapeType shapeType = (enumShapeType)ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
switch (shapeType)
{
case enumShapeType.NullShape:
break;
case enumShapeType.Point:
return(GetPointCountByPoint(fs, br, oid));
case enumShapeType.MultiPoint:
return(GetPointCountByMultiPoint(fs, br, oid));
case enumShapeType.Polyline:
return(GetPointCountByPolyline(fs, br, oid));
case enumShapeType.PolylineM:
return(GetPointCoungByPolylineM(fs, br, oid));
case enumShapeType.Polygon:
return(GetPointCountByPolygon(fs, br, oid));
default:
return(0);
}
return(0);
}
}
}
private long GetHeaderSizeAndFileLength(FileStream fsMainFile, BinaryReader brMainFile, out int fileLength)
{
//FileCode
int fileCode = ToLocalEndian.ToInt32FromBig(brMainFile.ReadBytes(4));
if (fileCode != 9994)
{
throw new Exception("文件不是ESRI Shape Files文件头！");
}
//Skip 20 bytes unused (5 integer)
brMainFile.ReadBytes(20);
//File length
fileLength = ToLocalEndian.ToInt32FromBig(brMainFile.ReadBytes(4)) * 2;
if (fileLength != fsMainFile.Length)
{
throw new Exception("ESRI Shape Files文件未正确结束！");
}
//Version
int Version = ToLocalEndian.ToInt32FromLittle(brMainFile.ReadBytes(4));
//Shape Type
int ShapeType = ToLocalEndian.ToInt32FromLittle(brMainFile.ReadBytes(4));
//
Envelope evp = new Envelope();
evp.MinX = ToLocalEndian.ToDouble64FromLittle(brMainFile.ReadBytes(8));
evp.MinY = ToLocalEndian.ToDouble64FromLittle(brMainFile.ReadBytes(8));
evp.MaxX = ToLocalEndian.ToDouble64FromLittle(brMainFile.ReadBytes(8));
evp.MaxY = ToLocalEndian.ToDouble64FromLittle(brMainFile.ReadBytes(8));
//Skip minZ,maxZ,minM,maxM
brMainFile.ReadBytes(8 * 4);
return(fsMainFile.Position);
}
protected override object ConstructFeature(BinaryReader br, int oid)
{
enumShapeType shapeType = (enumShapeType)ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
switch (shapeType)
{
case enumShapeType.NullShape:
break;
case enumShapeType.Point:
return(ConstructPoint(br, oid));
case enumShapeType.MultiPoint:
return(ConstructMultiPoint(br, oid));
case enumShapeType.Polyline:
return(ConstructPolyline(br, oid));
case enumShapeType.PolylineM:
return(ConstructPolylineM(br, oid));
case enumShapeType.Polygon:
return(ConstructPolygon(br, oid));
default:
return(null);
}
return(null);
}
private void ReadHeader()
{
//FileCode
int fileCode = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));
if (fileCode != 9994)
{
throw new Exception("文件不是ESRI Shape Files文件头！");
}
//Skip 20 bytes unused (5 integer)
_brMainFile.ReadBytes(20);
//File length
_fileLength = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4)) * 2;
if (_fileLength != _fsMainFile.Length)
{
throw new Exception("ESRI Shape Files文件未正确结束！");
}
//Version
int Version = ToLocalEndian.ToInt32FromLittle(_brMainFile.ReadBytes(4));
//Shape Type
int ShapeType = ToLocalEndian.ToInt32FromLittle(_brMainFile.ReadBytes(4));
_shapeType = (enumShapeType)ShapeType;
_envelope.MinX = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
_envelope.MinY = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
_envelope.MaxX = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
_envelope.MaxY = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
AdjustZeroWidthEnvelope(_envelope);
//Skip minZ,maxZ,minM,maxM
_brMainFile.ReadBytes(8 * 4);
_fileHeaderSize = _fsMainFile.Position;
}
private void WriteShapeMultiPointRecords(Feature[] vfs)
{
//the fist record offset in 16-bit word
byte[] byteArray;
ShapeMultiPoint mulPoint;
Int32 contentLength;
if (_currentShxRecondPosition != 0)
{
_fsShxFile.Seek(_currentShxRecondPosition, SeekOrigin.Begin);
}
if (_currentShpRecondPosition != 0)
{
_fsMainFile.Seek(_currentShpRecondPosition, SeekOrigin.Begin);
}
for (int i = 0; i < vfs.Length; i++)
{
mulPoint = vfs[i].Geometry as ShapeMultiPoint;
contentLength = (mulPoint.Points.Length * 16 + 48) / 2;
byteArray = BitConverter.GetBytes(_featuresCount + i + 1);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(contentLength);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(_offset);
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
_offset += contentLength;
byteArray = BitConverter.GetBytes((int)_shapeType);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MinX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MinY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MaxX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MaxY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Points.Length);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
foreach (ShapePoint sp in mulPoint.Points)
{
byteArray = BitConverter.GetBytes(sp.X);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(sp.Y);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
}
}
_currentShpRecondPosition = _fsMainFile.Position;
_currentShxRecondPosition = _fsShxFile.Position;
}
private void WriteShapePointRecords(Feature[] vfs)
{
//the fist record offset in 16-bit word
Int32 Offset = 50;
byte[] byteArray;
ShapePoint point;
for (int i = 0; i < vfs.Length; i++)
{
point = vfs[i].Geometry as ShapePoint;
byteArray = BitConverter.GetBytes(i + 1);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(14);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
////
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(Offset);
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
Offset += 14;
////
byteArray = BitConverter.GetBytes((int)_shapeType);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(point.X);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(point.Y);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
}
}
private void WriteShapeMultiPointRecords(Feature[] vfs)
{
//the fist record offset in 16-bit word
Int32 Offset = 50;
byte[] byteArray;
ShapeMultiPoint mulPoint;
Int32 contentLength;
for (int i = 0; i < vfs.Length; i++)
{
mulPoint = vfs[i].Geometry as ShapeMultiPoint;
contentLength = (mulPoint.Points.Length * 16 + 48) / 2;
byteArray = BitConverter.GetBytes(i + 1);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(contentLength);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
////
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(Offset);
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
Offset += contentLength;
////
byteArray = BitConverter.GetBytes((int)_shapeType);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MinX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MinY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MaxX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Envelope.MaxY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(mulPoint.Points.Length);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
foreach (ShapePoint sp in mulPoint.Points)
{
byteArray = BitConverter.GetBytes(sp.X);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(sp.Y);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
}
}
}
private int GetPointCountByPolygon(FileStream fs, BinaryReader br, int oid)
{
Envelope evp = new Envelope(ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)));
int nParts = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
int nPoints = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
//fs.Seek(nParts * 4, SeekOrigin.Current);
//fs.Seek(nPoints * 2 * 8, SeekOrigin.Current);
return(nPoints);
}
private object ConstructMultiPoint(BinaryReader br, int oid)
{
int pointCount = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
ShapePoint[] pts = new ShapePoint[pointCount];
for (int i = 0; i < pts.Length; i++)
{
pts[i] = new ShapePoint(ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)), ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)));
}
ShapeMultiPoint multiPoint = new ShapeMultiPoint(pts);
Feature f = new Feature(oid, multiPoint, GetFieldNames(), GetFieldValues(oid), GetAnnotation(oid));
return(f);
}
private object ConstructPolylineM(BinaryReader br, int oid)
{
Envelope evp = new Envelope(ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)));
int nParts = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
int nPoints = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
int[] firstPoints = new int[nParts];
for (int i = 0; i < nParts; i++)
{
firstPoints[i] = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
}
ShapePoint[] pts = new ShapePoint[nPoints];
for (int i = 0; i < nPoints; i++)
{
pts[i] = new ShapePoint(ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)));
}
//ShapeLineString
ShapeLineString[] Lines = new ShapeLineString[nParts];
for (int i = 0; i < nParts; i++)
{
int bIdx = firstPoints[i];
int eIdx = 0;
if (nParts == 1 || i == nParts - 1)
{
eIdx = nPoints;
}
else
{
eIdx = firstPoints[i + 1];
}
ShapePoint[] rpts = new ShapePoint[eIdx - bIdx];
for (int j = bIdx; j < eIdx; j++)
{
rpts[j - bIdx] = pts[j];
}
Lines[i] = new ShapeLineString(rpts);
}
//
br.ReadBytes(2 * 8); //M Range
br.ReadBytes(nPoints * 8); //M Array
//
ShapePolyline ply = new ShapePolyline(Lines, evp);
Feature f = new Feature(oid, ply, GetFieldNames(), GetFieldValues(oid), GetAnnotation(oid));
return(f);
}
private void WriteShapePointRecords(Feature[] vfs)
{
//the fist record offset in 16-bit word
byte[] byteArray;
ShapePoint point;
if (_currentShxRecondPosition != 0)
{
_fsShxFile.Seek(_currentShxRecondPosition, SeekOrigin.Begin);
}
if (_currentShpRecondPosition != 0)
{
_fsMainFile.Seek(_currentShpRecondPosition, SeekOrigin.Begin);
}
for (int i = 0; i < vfs.Length; i++)
{
point = vfs[i].Geometry as ShapePoint;
byteArray = BitConverter.GetBytes(_featuresCount + i + 1);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(10);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(_offset);
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
_offset += 14;
byteArray = BitConverter.GetBytes((int)_shapeType);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(point.X);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(point.Y);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
}
_currentShpRecondPosition = _fsMainFile.Position;
_currentShxRecondPosition = _fsShxFile.Position;
}
private void WriteShapePolygonRecords(Feature[] vfs)
{
//the fist record offset in 16-bit word
byte[] byteArray;
ShapePolygon polygon;
Int32 contentLength;
Int32 pointsNum = 0;
Int32 index = 0;
if (_currentShxRecondPosition != 0)
{
_fsShxFile.Seek(_currentShxRecondPosition, SeekOrigin.Begin);
}
if (_currentShpRecondPosition != 0)
{
_fsMainFile.Seek(_currentShpRecondPosition, SeekOrigin.Begin);
}
for (int i = 0; i < vfs.Length; i++)
{
polygon = vfs[i].Geometry as ShapePolygon;
pointsNum = 0;
index = 0;
contentLength = (44 + polygon.Rings.Length * 4) / 2;
foreach (ShapeRing part in polygon.Rings)
{
contentLength += part.Points.Length * 8;
pointsNum += part.Points.Length;
}
byteArray = BitConverter.GetBytes(_featuresCount + i + 1);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(_offset);
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
_offset += contentLength + 4;
byteArray = BitConverter.GetBytes(contentLength);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes((int)_shapeType);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MinX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MinY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MaxX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MaxY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Rings.Length);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(pointsNum);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
foreach (ShapeRing sr in polygon.Rings)
{
byteArray = BitConverter.GetBytes(index);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
index += sr.Points.Length;
}
foreach (ShapeRing sr in polygon.Rings)
{
foreach (ShapePoint sp in sr.Points)
{
byteArray = BitConverter.GetBytes(sp.X);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(sp.Y);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
}
}
}
_currentShpRecondPosition = _fsMainFile.Position;
_currentShxRecondPosition = _fsShxFile.Position;
}
private void WriteVectorDataToFiles(Feature[] features)
{
byte[] byteArray;
Envelope env = new Envelope(double.MaxValue, double.MaxValue, double.MinValue, double.MinValue);
foreach (Feature vf in features)
{
env.UnionWith(vf.Geometry.Envelope);
}
////write main file
//write main file and shx file header
byteArray = BitConverter.GetBytes(9994);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = new byte[20];
_bwMainFile.Write(byteArray);
_bwShxFile.Write(byteArray);
////
byteArray = BitConverter.GetBytes(CalculateMainfileLengthInByte(features) / 2);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
byteArray = BitConverter.GetBytes(CalculateShxfileLenthInByte(features) / 2);
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
////
byteArray = BitConverter.GetBytes(1000);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes((int)_shapeType);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(env.MinX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(env.MinY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(env.MaxX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(env.MaxY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
_bwShxFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = new byte[32];
_bwMainFile.Write(byteArray);
_bwShxFile.Write(byteArray);
//write main file and Shx file records
switch (_shapeType)
{
case enumShapeType.Point:
WriteShapePointRecords(features);
break;
case enumShapeType.MultiPoint:
WriteShapeMultiPointRecords(features);
break;
case enumShapeType.Polyline:
WriteShapePolylineRecords(features);
break;
case enumShapeType.Polygon:
WriteShapePolygonRecords(features);
break;
default:
break;
}
////write prj file,leave it now,no spec
CloseVectorDataFiles();
}
private void WriteShapePolygonRecords(Feature[] vfs)
{
//the fist record offset in 16-bit word
Int32 Offset = 50;
byte[] byteArray;
ShapePolygon polygon;
Int32 contentLength;
Int32 pointsNum = 0;
Int32 index = 0;
for (int i = 0; i < vfs.Length; i++)
{
polygon = vfs[i].Geometry as ShapePolygon;
pointsNum = 0;
index = 0;
contentLength = (44 + polygon.Rings.Length * 4) / 2;
foreach (ShapeRing part in polygon.Rings)
{
contentLength += part.Points.Length * 8;
pointsNum += part.Points.Length;
}
byteArray = BitConverter.GetBytes(i + 1);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
////
byteArray = BitConverter.GetBytes(Offset);
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
Offset += contentLength + 4;
////
byteArray = BitConverter.GetBytes(contentLength);
_bwMainFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
////
_bwShxFile.Write(ToLocalEndian.ToInt32FromBig(byteArray));
////
byteArray = BitConverter.GetBytes((int)_shapeType);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MinX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MinY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MaxX);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Envelope.MaxY);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(polygon.Rings.Length);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
byteArray = BitConverter.GetBytes(pointsNum);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
foreach (ShapeRing sr in polygon.Rings)
{
byteArray = BitConverter.GetBytes(index);
_bwMainFile.Write(ToLocalEndian.ToInt32FromLittle(byteArray));
index += sr.Points.Length;
}
foreach (ShapeRing sr in polygon.Rings)
{
foreach (ShapePoint sp in sr.Points)
{
byteArray = BitConverter.GetBytes(sp.X);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
byteArray = BitConverter.GetBytes(sp.Y);
_bwMainFile.Write(ToLocalEndian.ToInt64FromLittle(byteArray));
}
}
}
}