/// <summary>
/// 获取单条数据的某一角度信息
/// </summary>
/// <param name="angleInfo"></param>
/// <param name="mark">角度标志位，0：太阳天顶角；1:卫星天顶角；2：相对方位角</param>
/// <returns></returns>
private Int16[] ExtractAngleInfo(byte[] angleInfo, int mark)
{
byte[] angle = new byte[2];
Int16[] angles = new Int16[51];
int pt = 0;
int maxi = 2 * (mark + 1);
for (int j = 0; j < 51; j++)
{
for (int i = (mark * 2); i < maxi; i++)
{
angle[pt++] = angleInfo[i + 6 * j];
}
pt = 0;
if (_isBigEndian)
{
angles[j] = ToLocalEndian_Core.ToInt16FromBig(angle);
}
else
{
angles[j] = ToLocalEndian_Core.ToInt16FromLittle(angle);
}
}
return(angles);
}
public bool IsSupport(string fname, byte[] header1024, Dictionary <string, string> datasetNames)
{
if (ToLocalEndian_Core.ToInt16FromBig(new byte[] { header1024[10], header1024[11] }) != 22016 &&
ToLocalEndian_Core.ToInt16FromLittle(new byte[] { header1024[10], header1024[11] }) != 22016)
{
return(false);
}
return(true);
}
private bool IsBigEndian(IRasterDataProvider rasterDataProvider)
{
using (FileStream fs = new FileStream(rasterDataProvider.fileName, FileMode.Open, FileAccess.Read))
{
using (BinaryReader br = new BinaryReader(fs))
{
byte[] buffer = new byte[2];
fs.Seek(10, SeekOrigin.Begin);
buffer = br.ReadBytes(2);
br.Close();
fs.Close();
if (ToLocalEndian_Core.ToInt16FromBig(buffer) == 22016)
{
return(true);
}
else
{
return(false);
}
}
}
}
/// <summary>
/// 获取单条数据记录的纬度信息
/// </summary>
private double[] ExtractLatInfo(byte[] geoInfo)
{
byte[] lat = new byte[4];
double[] lats = new double[51];
int pt = 0;
for (int j = 0; j < 51; j++)
{
for (int i = 0; i < 4; i++)
{
lat[pt++] = geoInfo[i + 8 * j];
}
pt = 0;
if (_isBigEndian)
{
lats[j] = (float)(ToLocalEndian_Core.ToInt32FromBig(lat) / divisor);
}
else
{
lats[j] = (float)(ToLocalEndian_Core.ToInt32FromLittle(lat) / divisor);
}
}
return(lats);
}
