/// <summary>
/// 写入shp
/// </summary>
/// <param name="wktList"></param>
public void WriteShp(List <string> wktList)
{
if (mFileCreat)
{
mShpRecord.GetWKTInfo(wktList);
mShxRecord = new ShxRecord(mShpRecord.Header);
mHeader.Write(mShpFileWriter);
mShxRecord.RecordDic = mShpRecord.Write(mShpFileWriter);
}
}
/// <summary>
/// 写入record记录
/// 先判断是否获取wkt信息以及写入header
/// 写入的同时 计算shx的记录内容
/// </summary>
/// <param name="writer"></param>
/// <returns>返回shx的文件内容</returns>
public Dictionary <ulong, ShxData> Write(BinaryWriter writer)
{
Dictionary <ulong, ShxData> shxDic = new Dictionary <ulong, ShxData>();
if (isGetWKTInfo)
{
if (writer.BaseStream.Position == 0)
{
mHeader.Write(writer);
}
int offset = 50;//跳过头文件
switch (mHeader.GeoType)
{
case ShapeType.Point:
for (int i = 0; i < mRecordDic.Count; i++)
{
EVPoint point = mRecordDic[(ulong)(i + 1)].GeoShape as EVPoint;
ShxData shx = new ShxData();
shx.ContentLength = point.DataLength;
shx.Offset = offset;
offset += shx.ContentLength + 4;
shxDic.Add(point.RecordNum, shx);
//写入shp
byte[] lbtRecorderNum = BitConverter.GetBytes(point.RecordNum);
byte[] bbtRecorderNum = ByteTransUtil.little2big(lbtRecorderNum);
writer.Write(bbtRecorderNum);
byte[] lbtDataLength = BitConverter.GetBytes(point.DataLength);
byte[] bbtDataLength = ByteTransUtil.little2big(lbtDataLength);
writer.Write(bbtDataLength);
writer.Write((int)ShapeType.Point);
writer.Write(point.X);
writer.Write(point.Y);
}
break;
case ShapeType.PolyLine:
for (int i = 0; i < mRecordDic.Count; i++)
{
EVPolyLine line = mRecordDic[(ulong)(i + 1)].GeoShape as EVPolyLine;
ShxData shx = new ShxData();
shx.ContentLength = line.DataLength;
shx.Offset = offset;
offset += shx.ContentLength + 4;
shxDic.Add(line.RecordNum, shx);
//写入shp
byte[] lbtRecorderNum = BitConverter.GetBytes(line.RecordNum);
byte[] bbtRecorderNum = ByteTransUtil.little2big(lbtRecorderNum);
writer.Write(bbtRecorderNum);
byte[] lbtDataLength = BitConverter.GetBytes(line.DataLength);
byte[] bbtDataLength = ByteTransUtil.little2big(lbtDataLength);
writer.Write(bbtDataLength);
writer.Write((int)line.GeoType);
writer.Write(line.Xmin);
writer.Write(line.Ymin);
writer.Write(line.Xmax);
writer.Write(line.Ymax);
writer.Write(line.NumParts);
writer.Write(line.NumPoints);
for (int j = 0; j < line.NumParts; j++)
{
writer.Write((int)line.Parts[j]);
}
for (int j = 0; j < line.NumPoints; j++)
{
EVPoint point = line.Points[j] as EVPoint;
writer.Write(point.X);
writer.Write(point.Y);
}
}
break;
case ShapeType.Polygon:
for (int i = 0; i < mRecordDic.Count; i++)
{
EVPolygon gon = mRecordDic[(ulong)(i + 1)].GeoShape as EVPolygon;
ShxData shx = new ShxData();
shx.ContentLength = gon.DataLength;
shx.Offset = offset;
offset += shx.ContentLength + 4;
shxDic.Add(gon.RecordNum, shx);
//写入shp
byte[] lbtRecorderNum = BitConverter.GetBytes(gon.RecordNum);
byte[] bbtRecorderNum = ByteTransUtil.little2big(lbtRecorderNum);
writer.Write(bbtRecorderNum);
byte[] lbtDataLength = BitConverter.GetBytes(gon.DataLength);
byte[] bbtDataLength = ByteTransUtil.little2big(lbtDataLength);
writer.Write(bbtDataLength);
writer.Write((int)gon.GeoType);
writer.Write(gon.Xmin);
writer.Write(gon.Ymin);
writer.Write(gon.Xmax);
writer.Write(gon.Ymax);
writer.Write(gon.NumParts);
writer.Write(gon.NumPoints);
for (int j = 0; j < gon.NumParts; j++)
{
writer.Write((int)gon.Parts[j]);
}
for (int j = 0; j < gon.NumPoints; j++)
{
EVPoint point = gon.Points[j] as EVPoint;
writer.Write(point.X);
writer.Write(point.Y);
}
}
break;
}
}
return(shxDic);
}
