private IRasterDataProvider CreateOutRaster(string outdir, IRasterDataProvider raster, ISpatialReference dstSpatial, PrjEnvelope envelope, double resolutionX, double resolutionY, string bandNames)
{
IRasterDataProvider outRaster = null;
if (raster.Driver.Name == "MEM") //smart 产品数据，输出也用MEM驱动，目前数据纠正这里不存在。
{
string[] options = new string[]
{
"INTERLEAVE=BSQ",
"VERSION=MEM",
"SPATIALREF=" + dstSpatial.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + envelope.MinX + "," + envelope.MaxY + "}:{" + resolutionX + "," + resolutionY + "}",
string.IsNullOrWhiteSpace(bandNames)?"": "BANDNAMES=" + bandNames
};
string outfilename = Path.Combine(outdir, Path.GetFileNameWithoutExtension(raster.fileName) + ".DAT");
outRaster = (raster.Driver as IRasterDataDriver).Create(outfilename, raster.Width, raster.Height, 1, enumDataType.Int16, options);
}
else//ldf
{
string[] options = new string[]
{
"INTERLEAVE=BSQ",
"VERSION=LDF",
"SPATIALREF=" + dstSpatial.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + envelope.MinX + "," + envelope.MaxY + "}:{" + resolutionX + "," + resolutionY + "}",
"DATETIME=" + raster.DataIdentify.OrbitDateTime,
string.IsNullOrWhiteSpace(bandNames)?"": "BANDNAMES=" + bandNames
};
string outfilename = Path.Combine(outdir, Path.GetFileNameWithoutExtension(raster.fileName) + ".LDF");
IRasterDataDriver driver = GeoDataDriver.GetDriverByName("LDF") as IRasterDataDriver;
outRaster = driver.Create(outfilename, raster.Width, raster.Height, 1, enumDataType.Int16, options);
}
return(outRaster);
}
private string[] LdfOptions(FilePrjSettings prjSettings, ISpatialReference dstSpatial, float resolutionX, float resolutionY, DataIdentify dataIdentify)
{
List <string> options = new List <string>();
options.Add("INTERLEAVE=BSQ");
options.Add("VERSION=LDF");
options.Add("SPATIALREF=" + dstSpatial.ToProj4String());
options.Add("MAPINFO={" + 1 + "," + 1 + "}:{" + prjSettings.OutEnvelope.MinX + "," + prjSettings.OutEnvelope.MaxY + "}:{" + resolutionX + "," + resolutionY + "}");
options.Add("SENSOR=NOM");
if (dataIdentify != null)
{
string satellite = dataIdentify.Satellite;
DateTime dt = dataIdentify.OrbitDateTime;
bool asc = dataIdentify.IsAscOrbitDirection;
if (!string.IsNullOrWhiteSpace(satellite))
{
options.Add("SATELLITE=" + satellite);
}
if (dt != DateTime.MinValue && dt != DateTime.MaxValue)
{
options.Add("DATETIME=" + dt.ToString("yyyy/MM/dd HH:mm"));
}
}
return(options.ToArray());
}
private IRasterDataProvider CreateOutFile(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, ISpatialReference dstSpatial, enumDataType dataType)
{
float resolutionX = prjSettings.OutResolutionX;
float resolutionY = prjSettings.OutResolutionY;
string[] options = null;
string outformat = string.IsNullOrWhiteSpace(prjSettings.OutFormat) ? "LDF" : prjSettings.OutFormat.ToUpper();
string driver = "";
if (outformat == "TIFF")
{
driver = "GDAL";
options = new string[] {
"DRIVERNAME=GTiff",
"TFW=YES",
"WKT=" + dstSpatial.ToWKTString(),
"GEOTRANSFORM=" + string.Format("{0},{1},{2},{3},{4},{5}", prjSettings.OutEnvelope.MinX, resolutionX, 0, prjSettings.OutEnvelope.MaxY, 0, -resolutionY)
};
}
else if (outformat == "MEM")
{
driver = "MEM";
options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=MEM",
"WITHHDR=TRUE",
"SPATIALREF=" + dstSpatial.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + prjSettings.OutEnvelope.MinX + "," + prjSettings.OutEnvelope.MaxY + "}:{" + resolutionX + "," + resolutionY + "}"
};
}
else
{
driver = "LDF";
options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"SPATIALREF=" + dstSpatial.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + prjSettings.OutEnvelope.MinX + "," + prjSettings.OutEnvelope.MaxY + "}:{" + resolutionX + "," + resolutionY + "}",
"BANDNAMES=" + BandNameString(srcRaster, prjSettings.OutBandNos)
};
}
Size outSize = prjSettings.OutEnvelope.GetSize(resolutionX, resolutionY);
int bandCount = prjSettings.OutBandNos.Length;
string filename = prjSettings.OutPathAndFileName;
return(CreateOutFile(driver, filename, bandCount, outSize, dataType, options));
}
private IRasterDataProvider CreateDstDataProvider(IRasterDataDriver driver, string outFile, IRasterDataProvider dataProvider)
{
ISpatialReference spatialRef = dataProvider.SpatialRef ?? new SpatialReference(new GeographicCoordSystem());
string spRef = "SPATIALREF=" + spatialRef.ToProj4String();
string mapInf = dataProvider.CoordEnvelope.ToMapInfoString(new Size(dataProvider.Width, dataProvider.Height));
return(driver.Create(outFile, dataProvider.Width, dataProvider.Height, 1, enumDataType.Float, spRef, mapInf, "WITHHDR=TRUE"));
}
/// <summary>
/// 0、先生成目标文件，以防止目标空间不足。
/// 1、计算查找表
/// 2、对所有波段执行投影
/// </summary>
private void ProjectToLDF(IRasterDataProvider srcRaster, FY3_VIRR_PrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
string outFormat = prjSettings.OutFormat;
string outfilename = prjSettings.OutPathAndFileName;
string dstProj4 = dstSpatialRef.ToProj4String();
List <BandMap> bandMaps = prjSettings.BandMapTable;
int dstBandCount = bandMaps.Count;
Size srcSize = new Size(srcRaster.Width, srcRaster.Height);
Size dstSize = prjSettings.OutSize;
using (IRasterDataDriver drv = GeoDataDriver.GetDriverByName("LDF") as IRasterDataDriver)
{
PrjEnvelope dstEnvelope = prjSettings.OutEnvelope;
string mapInfo = "MAPINFO={" + 1 + "," + 1 + "}:{" + dstEnvelope.MinX + "," + dstEnvelope.MaxY + "}:{" + prjSettings.OutResolutionX + "," + prjSettings.OutResolutionY + "}";
using (IRasterDataProvider prdWriter = drv.Create(outfilename, dstSize.Width, dstSize.Height, dstBandCount,
enumDataType.UInt16, "INTERLEAVE=BSQ", "VERSION=LDF", "SPATIALREF=" + dstProj4, mapInfo, "WITHHDR=TRUE") as IRasterDataProvider)
{
//计算查找表
//ISpatialReference srcSpatialRef = srcRaster.SpatialRef;
UInt16[] dstRowLookUpTable = new UInt16[dstSize.Width * dstSize.Height];
UInt16[] dstColLookUpTable = new UInt16[dstSize.Width * dstSize.Height];
_rasterProjector.ComputeIndexMapTable(_xs, _ys, srcSize, dstSize, dstEnvelope, _maxPrjEnvelope,
out dstRowLookUpTable, out dstColLookUpTable, progressCallback);
//执行投影
UInt16[] srcBandData = new UInt16[srcSize.Width * srcSize.Height];
UInt16[] dstBandData = new UInt16[dstSize.Width * dstSize.Height];
int progress = 0;
for (int i = 0; i < dstBandCount; i++) //读取原始通道值，投影到目标区域
{
if (progressCallback != null)
{
progress = (int)((i + 1) * 100 / dstBandCount);
progressCallback(progress, string.Format("投影第{0}共{1}通道", i + 1, dstBandCount));
}
BandMap bandMap = bandMaps[i];
ReadBandData(srcBandData, bandMap.File, bandMap.DatasetName, bandMap.BandIndex, srcSize);
if (prjSettings.IsRadiation)
{
DoRadiation(srcBandData, srcSize, bandMap.DatasetName, bandMap.BandIndex, prjSettings.IsSolarZenith);
}
_rasterProjector.Project <UInt16>(srcBandData, srcSize, dstRowLookUpTable, dstColLookUpTable, dstSize, dstBandData, 0, progressCallback);
using (IRasterBand band = prdWriter.GetRasterBand(i + 1))
{
unsafe
{
fixed(UInt16 *ptr = dstBandData)
{
IntPtr bufferPtr = new IntPtr(ptr);
band.Write(0, 0, band.Width, band.Height, bufferPtr, enumDataType.UInt16, band.Width, band.Height);
}
}
}
}
}
}
}
private void button1_Click(object sender, EventArgs e)
{
ISpatialReference srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
string prj4 = srcSpatialRef.ToProj4String();
ISpatialReference dstSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
using (IProjectionTransform tran = ProjectionTransformFactory.GetProjectionTransform(srcSpatialRef, dstSpatialRef))
{
}
}
public void Test()
{
ISpatialReference srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("Mercator (sphere).prj");
string proj4 = srcSpatialRef.ToProj4String();
Assert.AreEqual(proj4, "+proj=merc +x_0=0 +y_0=0 +lon_0=0 +lat_1=0 +datum=WGS84 +a=6371000 +b=6356863.01877305+f=正无穷大 +nodefs");
srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
}
//private void button4_Click(object sender, EventArgs e)
//{
// ISpatialReference srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
// srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("Mercator (sphere).prj");
// string proj4 = srcSpatialRef.ToProj4String();
// srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
//}
//private void button4_Click(object sender, EventArgs e)
//{
// TestFy3AVirrProjection fyp = new TestFy3AVirrProjection();
// Action<int, string> progressCallback = new Action<int, string>(OutProgress);
// fyp.DataReady(progressCallback);
// Stopwatch stopwatch = new Stopwatch();
// stopwatch.Start();
// fyp.TestFy3VIRR();
// stopwatch.Stop();
// WriteLine("数据投影{0}ms", stopwatch.ElapsedMilliseconds);
// stopwatch.Restart();
//}
private void TestPrj4Parser_Click(object sender, EventArgs e)
{
ISpatialReference srcSpatialRef = null;// SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
string prjFile = "f:\\32600.prj";
srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("Mercator (sphere).prj");
string proj4 = srcSpatialRef.ToProj4String();
ISpatialReference inverSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
bool isSame = srcSpatialRef.IsSame(inverSpatialRef);
}
private IRasterDataProvider CreateMosaicRaster(string filename, GeoInfo geoHeader, int bandCount, ISpatialReference spatialRef)
{
IRasterDataProvider outRaster = null;
if (File.Exists(filename))
{
outRaster = GeoDataDriver.Open(filename, enumDataProviderAccess.Update, null) as IRasterDataProvider;
}
else
{
float resX = 0.01f;
float resY = 0.01f;
float ltX = 65;
float ltY = 60;
int width = 8000;
int height = 7000;
if (geoHeader == null)
{
return(null);
}
resX = geoHeader.ResX;
resY = geoHeader.ResY;
ltX = geoHeader.LtX;
ltY = geoHeader.LtY;
width = geoHeader.Width;
height = geoHeader.Height;
if (spatialRef == null)
{
spatialRef = SpatialReference.GetDefault();
}
string dir = Path.GetDirectoryName(filename);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
IRasterDataDriver raster = RasterDataDriver.GetDriverByName("LDF") as IRasterDataDriver;
string bandNames = "";//CreateBandNames(bandcount);
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + spatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + ltX + "," + ltY + "}:{" + resX + "," + resY + "}",
"BANDNAMES=" + bandNames
};
outRaster = raster.Create(filename, width, height, bandCount, enumDataType.UInt16, options) as RasterDataProvider;
string outSolarZenithFile = Path.ChangeExtension(filename, ".SolarZenith.ldf");
using (RasterDataProvider outSolarZenithRaster = raster.Create(outSolarZenithFile, width, height, 1, enumDataType.UInt16, options) as RasterDataProvider)
{ }
}
return(outRaster);
}
public void Resample(RSS.Core.DF.IRasterDataProvider srcRaster, FileResampleSetting resSettings, Action <int, string> progressCallback)
{
if (srcRaster == null)
{
throw new ArgumentNullException("srcRaster", "待重采样数据为空");
}
if (resSettings == null)
{
throw new ArgumentNullException("prjSettings", "重采样参数为空");
}
ReadExtArgs(resSettings);
string outfilename = resSettings.OutPathAndFileName;
IRasterDataProvider outwriter = null;
try
{
Size outSize = _resSettings.OutSize;
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + _dstSpatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + _resSettings.OutEnvelope.MinX + "," + _resSettings.OutEnvelope.MaxY + "}:{" + _resSettings.OutResolutionX + "," + _resSettings.OutResolutionY + "}"
};
outwriter = CreateOutFile(outfilename, srcRaster.BandCount, outSize, srcRaster.DataType, options);
if (File.Exists(outfilename))
{
ResampleRaster(srcRaster, outwriter, progressCallback);
}
else
{
throw new FileLoadException("目标文件" + outfilename + "不存在！");
}
}
catch (IOException ex)
{
if (ex.Message == "磁盘空间不足。\r\n" && File.Exists(outfilename))
{
File.Delete(outfilename);
}
throw ex;
}
finally
{
if (outwriter != null)
{
outwriter.Dispose();
outwriter = null;
}
}
}
private string GetPrjInfo()
{
try
{
ISpatialReference prjInfo = SpatialReference.GetDefault();
PrimeMeridian centerLongitude = prjInfo.GeographicsCoordSystem.PrimeMeridian;
centerLongitude.Value = 150d;
return(prjInfo.ToProj4String());
}
catch
{
return(null);
}
}
private string[] CreateLDFOptions(ISpatialReference spatialRef)
{
string bandNames = "";
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + spatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + _env.MinX + "," + _env.MaxY + "}:{" + _resX + "," + _resY + "}",
"BANDNAMES=" + bandNames
};
return(options);
}
public ProjectionTransform(ISpatialReference srcSpatialRef, ISpatialReference dstSpatialRef)
{
if (srcSpatialRef == null)
{
throw new ArgumentNullException("源空间参考对象为空。");
}
if (dstSpatialRef == null)
{
throw new ArgumentNullException("目标空间参考对象为空。");
}
_srcProjection = new Proj4Projection(srcSpatialRef.ToProj4String());
_dstProjection = new Proj4Projection(dstSpatialRef.ToProj4String());
_srcProjection._coordinateDomain = srcSpatialRef.CoordinateDomain;
_dstProjection._coordinateDomain = dstSpatialRef.CoordinateDomain;
}
private IRasterDataProvider CreateMosaicFile(IRasterDataProvider copyRaster, PrjEnvelope env, string filename)
{
ISpatialReference spatialRef = copyRaster.SpatialRef;
string bandNames = BandNameString(copyRaster as ILdfDataProvider);
Size outSize = env.GetSize(copyRaster.ResolutionX, copyRaster.ResolutionY);
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + spatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + env.MinX + "," + env.MaxY + "}:{" + copyRaster.ResolutionX + "," + copyRaster.ResolutionY + "}",
"BANDNAMES=" + bandNames
};
return(IdentifyOutFile(filename, copyRaster.BandCount, outSize, copyRaster.DataType, options));
}
private IRasterDataProvider CreateMosaicFile(string mosaicFilename, InputArg inArg)
{
ISpatialReference spatialRef = fileRaster.SpatialRef;
PrjEnvelope env = inArg.MosaicInputArg.Envelope.PrjEnvelope;
string bandNames = BandNameString(fileRaster as ILdfDataProvider);
Size outSize = env.GetSize(fileRaster.ResolutionX, fileRaster.ResolutionY);
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + spatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + env.MinX + "," + env.MaxY + "}:{" + fileRaster.ResolutionX + "," + fileRaster.ResolutionY + "}",
"BANDNAMES=" + bandNames
};
return(CreateOutFile(mosaicFilename, fileRaster.BandCount, outSize, enumDataType.UInt16, options));
}
public void ParseProj4()
{
string proj4 = "+proj=merc +lon_0=0 +k0=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137";
Console.WriteLine("INPUT:");
Console.WriteLine(proj4);
ISpatialReference spatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
Console.WriteLine("ESRI WKT:");
Console.WriteLine(spatialRef.ToString());
Console.WriteLine("PROJ.4:");
Console.WriteLine(spatialRef.ToProj4String());
Console.WriteLine("OGC WKT:");
Console.WriteLine(spatialRef.ToWKTString());
Console.WriteLine("ENVI Projection Info:");
Console.WriteLine(spatialRef.ToEnviProjectionInfoString());
}
private object[] GetOptions(CoordEnvelope outputEnvelope, int width, int height)
{
List<string> ops = new List<string>();
if (_coordEnvelope != null)
ops.Add(outputEnvelope.ToMapInfoString(new Size(width, height)));
if (_spatialRef != null)
{
try
{
string spref = _spatialRef.ToProj4String();
ops.Add("SPATIALREF=" + spref);
}
catch (Exception ex)
{
Console.Write(ex.Message);
}
}
return ops.Count > 0 ? ops.ToArray() : null;
}
private string[] CreateLDFOptions(IRasterDataProvider inRaster)
{
CoordEnvelope outEnv = inRaster.CoordEnvelope;
float resX = inRaster.ResolutionX;
float resY = inRaster.ResolutionY;
int width = inRaster.Width;
int height = inRaster.Height;
ISpatialReference spatialRef = inRaster.SpatialRef;
string bandNames = "";
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + spatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + outEnv.MinX + "," + outEnv.MaxY + "}:{" + resX + "," + resY + "}",
"BANDNAMES=" + bandNames
};
return(options);
}
private void button18_Click(object sender, EventArgs e)
{
string wkt = "GEOGCS[\"等经纬度投影\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]]";
wkt = "PROJCS[\"Hammer投影\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Hammer-Aitoff (world)\"]PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],PARAMETER[\"central_meridian\",105],UNIT[\"Meter\",1]]";
ISpatialReference srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByWKT(wkt, enumWKTSource.EsriPrjFile);
string proj4 = srcSpatialRef.ToProj4String();
ISpatialReference inverSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
inverSpatialRef.IsSame(srcSpatialRef);
IProjectionTransform tr = ProjectionTransformFactory.GetProjectionTransform(srcSpatialRef, SpatialReference.GetDefault());
double[] x = new double[] { 1534910 };
double[] y = new double[] { 4255978 };
x = new double[] { 121.913 };
y = new double[] { 38.957 };
tr.InverTransform(x, y);
tr.Transform(x, y);
}
private object[] GetOptions()
{
List <string> ops = new List <string>();
if (_coordEnvelope != null)
{
ops.Add(_coordEnvelope.ToMapInfoString(new Size(vData.Width, vData.Height)));
}
if (_spatialRef != null)
{
try
{
string spref = _spatialRef.ToProj4String();
ops.Add("SPATIALREF=" + spref);
}
catch (Exception ex)
{
Console.Write(ex.Message);
}
}
return(ops.Count > 0 ? ops.ToArray() : null);
}
private object[] GetOptions()
{
List <string> ops = new List <string>();
if (_coordEnvelope != null)
{
ops.Add(_coordEnvelope.ToMapInfoString(_size));
}
if (_spatialRef != null)
{
try
{
string spref = _spatialRef.ToProj4String();
ops.Add("SPATIALREF=" + spref);
}
catch (Exception ex)
{
Console.Write(ex.Message);
}
}
ops.Add("ExtHeaderSize=" + _extHeaderSize.ToString());
return(ops.Count > 0 ? ops.ToArray() : null);
}
private void TestProj()
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
Size srSize = Size.Empty;
Double[] lats = null;
Double[] longs = null;
using (IRasterDataProvider srcPrd = GeoDataDriver.Open(@"D:\masData\FY3A_VIRRX_GBAL_L1_20110322_0525_1000M_MS.HDF") as IRasterDataProvider)
{
using (IBandProvider srcbandpro = srcPrd.BandProvider as IBandProvider)
{
srSize = new System.Drawing.Size(srcPrd.Width, srcPrd.Height);
lats = new Double[srcPrd.Width * srcPrd.Height];
longs = new Double[srcPrd.Width * srcPrd.Height];
using (IRasterBand latBand = srcbandpro.GetBands("Latitude")[0])
{
using (IRasterBand lonsBand = srcbandpro.GetBands("Longitude")[0])
{
unsafe
{
fixed(Double *ptrLat = lats)
{
fixed(Double *ptrLong = longs)
{
IntPtr bufferPtrLat = new IntPtr(ptrLat);
IntPtr bufferPtrLong = new IntPtr(ptrLong);
latBand.Read(0, 0, srcPrd.Width, srcPrd.Height, bufferPtrLat, enumDataType.Double, srcPrd.Width, srcPrd.Height);
lonsBand.Read(0, 0, srcPrd.Width, srcPrd.Height, bufferPtrLong, enumDataType.Double, srcPrd.Width, srcPrd.Height);
}
}
}
}
}
stopwatch.Stop();
WriteLine("读取经纬度{0}ms", stopwatch.ElapsedMilliseconds);
stopwatch.Restart();
IRasterProjector raster = new RasterProjector();
PrjEnvelope destEnvelope;
Action <int, string> progressCallback = new Action <int, string>(OutProgress);
//progressCallback = null; //测试不用进度条的情况
ISpatialReference srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
ISpatialReference dstSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("ChinaBoundary.prj");
raster.ComputeDstEnvelope(srcSpatialRef, longs, lats, srSize, dstSpatialRef, out destEnvelope, progressCallback);
stopwatch.Stop();
WriteLine("计算范围{0}ms", stopwatch.ElapsedMilliseconds);
WriteLine("范围{0}", destEnvelope.ToString());
Size dstSize = new Size((int)(destEnvelope.Width / 0.01), (int)(destEnvelope.Height / 0.01));
UInt16[] dstRowLookUpTable = new UInt16[dstSize.Width * dstSize.Height];
UInt16[] dstColLookUpTable = new UInt16[dstSize.Width * dstSize.Height];
raster.ComputeIndexMapTable(srcSpatialRef, longs, lats, srSize, dstSpatialRef, dstSize, destEnvelope,
out dstRowLookUpTable, out dstColLookUpTable, progressCallback);
stopwatch.Stop();
WriteLine("计算投影查找表{0}ms", stopwatch.ElapsedMilliseconds);
stopwatch.Restart();
int srcBandCount = srcPrd.BandCount;
using (IRasterDataDriver drv = GeoDataDriver.GetDriverByName("LDF") as IRasterDataDriver)
{
string proj4 = dstSpatialRef.ToProj4String();
using (IRasterDataProvider prdWriter = drv.Create(@"d:\Myproj4LutX.ldf", dstSize.Width, dstSize.Height, srcBandCount,
enumDataType.UInt16, "INTERLEAVE=BSQ", "VERSION=LDF", "SPATIALREF=" + proj4) as IRasterDataProvider)
{
UInt16[] dstData = new UInt16[dstSize.Width * dstSize.Height];
UInt16[] srcData = new UInt16[srSize.Width * srSize.Height];
//int perProgress = 0;
//int curProgress = 0;
for (int i = 0; i < srcBandCount; i++)
{
using (IRasterBand latBand = srcPrd.GetRasterBand(i + 1))
{
unsafe
{
fixed(UInt16 *ptr = srcData)
{
IntPtr bufferptr = new IntPtr(ptr);
latBand.Read(0, 0, srSize.Width, srSize.Height, bufferptr, enumDataType.UInt16, srSize.Width, srSize.Height);
}
}
}
//stopwatch.Stop();
//WriteLine("读取一个通道{0}ms,通道索引{1}", stopwatch.ElapsedMilliseconds, i + 1);
//stopwatch.Restart();
raster.Project <UInt16>(srcData, srSize, dstRowLookUpTable, dstColLookUpTable, dstSize, dstData, 0, progressCallback);
//stopwatch.Stop();
//WriteLine("投影一个通道{0}ms,通道索引{1}", stopwatch.ElapsedMilliseconds, i + 1);
//stopwatch.Restart();
using (IRasterBand band = prdWriter.GetRasterBand(i + 1))
{
unsafe
{
fixed(UInt16 *ptr = dstData)
{
IntPtr bufferPtr = new IntPtr(ptr);
band.Write(0, 0, band.Width, band.Height, bufferPtr, enumDataType.UInt16, band.Width, band.Height);
}
}
}
//curProgress = (i+1) * 100 / srcBandCount;
//if (progressCallback != null && curProgress > perProgress)
//{
// progressCallback(curProgress, "");
// perProgress = curProgress;
//}
//stopwatch.Stop();
//WriteLine("写出一个通道{0}ms", stopwatch.ElapsedMilliseconds);
//stopwatch.Restart();
}
}
}
stopwatch.Stop();
WriteLine("投影完所有通道{0}ms", stopwatch.ElapsedMilliseconds);
stopwatch.Restart();
}
}
}
private void ReadyArgs(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
float resolutionScale = 1f;
_readyProgress = 0;
if (progressCallback != null)
{
progressCallback(_readyProgress++, "准备相关参数");
}
if (dstSpatialRef == null)
{
dstSpatialRef = SpatialReference.GetDefault();
}
_dstSpatialRef = dstSpatialRef;
_prjSettings = ArgsCheck(srcRaster, prjSettings, progressCallback);
//_fileType = CheckFile(srcRaster);
_locationRaster = (prjSettings as FY3L2L3FilePrjSettings).LocationFile;
ReadExtArgs(prjSettings);
TryCreateDefaultArg(srcRaster, _prjSettings, ref _dstSpatialRef);
_left = 0;
_right = 0;
TrySetLeftRightInvalidPixel(_prjSettings.ExtArgs);
DoSession(srcRaster, _dstSpatialRef, _prjSettings, progressCallback);
if (_prjSettings.OutEnvelope == null || _prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
_prjSettings.OutEnvelope = _maxPrjEnvelope;
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = srcRaster.Width - 1, yEnd = srcRaster.Height - 1
};
}
else
{
GetEnvelope(_xs, _ys, _srcLocationSize.Width, _srcLocationSize.Height, _prjSettings.OutEnvelope, out _orbitBlock);
if (_orbitBlock == null || _orbitBlock.Width <= 0 || _orbitBlock.Height <= 0)
{
throw new Exception("数据不在目标区间内");
}
float invalidPresent = (_orbitBlock.Width * _orbitBlock.Height * resolutionScale) / (srcRaster.Width * srcRaster.Height);
if (invalidPresent < 0.0001f)
{
throw new Exception("数据占轨道数据比例太小,有效率" + invalidPresent * 100 + "%");
}
if (invalidPresent > 0.60f)
{
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = srcRaster.Width - 1, yEnd = srcRaster.Height - 1
}
}
;
}
_dstEnvelope = _prjSettings.OutEnvelope;
if (!_dstEnvelope.IntersectsWith(_maxPrjEnvelope))
{
throw new Exception("数据不在目标区间内");
}
_outResolutionX = _prjSettings.OutResolutionX;
_outResolutionY = _prjSettings.OutResolutionY;
_outFormat = _prjSettings.OutFormat;
_outfilename = _prjSettings.OutPathAndFileName;
_dstProj4 = _dstSpatialRef.ToProj4String();
//_dstBandCount = _prjBands.Length;
_dstBandCount = _rasterDataBands.Length;
_dstSize = _prjSettings.OutSize;
//_isRadiation = _prjSettings.IsRadiation;
//_isSolarZenith = _prjSettings.IsSolarZenith;
//_isSensorZenith = _prjSettings.IsSensorZenith;
}
public override void Project(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
try
{
ReadyArgs(srcRaster, prjSettings, dstSpatialRef, progressCallback);
IRasterDataProvider outwriter = null;
try
{
List <string> options = new List <string>();
options.Add("INTERLEAVE=BSQ");
options.Add("VERSION=LDF");
options.Add("WITHHDR=TRUE");
options.Add("SPATIALREF=" + dstSpatialRef.ToProj4String());
options.Add("MAPINFO={" + 1 + "," + 1 + "}:{" + _prjSettings.OutEnvelope.MinX + "," + _prjSettings.OutEnvelope.MaxY + "}:{" + _outResolutionX + "," + _outResolutionY + "}");
options.Add("SENSOR=VIRR");
if (srcRaster.DataIdentify != null)
{
string satellite = srcRaster.DataIdentify.Satellite;
DateTime dt = srcRaster.DataIdentify.OrbitDateTime;
bool asc = srcRaster.DataIdentify.IsAscOrbitDirection;
if (!string.IsNullOrWhiteSpace(satellite))
{
options.Add("SATELLITE=" + satellite);
}
if (dt != DateTime.MinValue && dt != DateTime.MaxValue)
{
options.Add("DATETIME=" + dt.ToString("yyyy/MM/dd HH:mm"));
}
options.Add("ORBITDIRECTION=" + (asc ? "ASC" : "DESC"));
if (srcRaster.DataIdentify.DayOrNight == enumDayOrNight.Day)
{
options.Add("DAYNIGHT=D");
}
else if (srcRaster.DataIdentify.DayOrNight == enumDayOrNight.Night)
{
options.Add("DAYNIGHT=N");
}
}
List <string> op1 = new List <string>(options);
op1.Add("BANDNAMES=" + BandNameString(_prjSettings.OutBandNos));
outwriter = CreateOutFile(_outfilename, _dstBandCount, _dstSize, op1.ToArray());
ReadyAngleFiles(_geoDataProvider, _outfilename, _prjSettings, _dstSize, options.ToArray());
ReadyExtBands(_geoDataProvider, _outfilename, _prjSettings, _dstSize, options.ToArray());
ProjectToLDF(srcRaster, outwriter, 0, progressCallback);
}
catch (IOException ex)
{
if (ex.Message == "磁盘空间不足。\r\n" && File.Exists(_outfilename))
{
File.Delete(_outfilename);
}
throw ex;
}
finally
{
if (outwriter != null)
{
outwriter.Dispose();
outwriter = null;
}
}
}
catch
{
EndSession();
TryDeleteCurCatch();
throw;
}
finally
{
if (_curSession == null)
{
EndSession();
if (prjSettings.IsClearPrjCache)
{
TryDeleteCurCatch();
}
}
}
}
public override IRasterDataProvider Project(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, IRasterDataProvider dstRaster, int beginBandIndex, Action <int, string> progressCallback)
{
if (srcRaster == null)
{
throw new ArgumentNullException("srcRaster");
}
if (prjSettings == null)
{
throw new ArgumentNullException("prjSettings");
}
if (dstRaster == null && prjSettings.OutPathAndFileName == null)
{
throw new ArgumentNullException("dstRaster");
}
try
{
FY3_VIRR_PrjSettings fy3prjSettings = prjSettings as FY3_VIRR_PrjSettings;
ISpatialReference dstSpatialRef = dstRaster.SpatialRef;
TryCreateDefaultArgs(srcRaster, fy3prjSettings, ref dstSpatialRef);
DoSession(srcRaster, _geoDataProvider, dstSpatialRef, fy3prjSettings, progressCallback);
if (prjSettings.OutEnvelope == null || prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
prjSettings.OutEnvelope = _maxPrjEnvelope;
}
if (dstSpatialRef.ProjectionCoordSystem == null && (prjSettings.OutEnvelope.MaxY > 80 || prjSettings.OutEnvelope.MaxY < -80))
{
throw new Exception(string.Format("高纬度数据[>80]，不适合投影为等经纬度数据[{0}]", _maxPrjEnvelope));
}
if (dstRaster == null)
{
PrjEnvelope dstEnvelope = prjSettings.OutEnvelope;
string outFormat = prjSettings.OutFormat;
string outfilename = prjSettings.OutPathAndFileName;
string dstProj4 = dstSpatialRef.ToProj4String();
int dstBandCount = _prjBands.Length;
Size srcSize = new Size(srcRaster.Width, srcRaster.Height);
Size dstSize = prjSettings.OutSize;
IRasterDataDriver drv = GeoDataDriver.GetDriverByName("LDF") as IRasterDataDriver;
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + dstProj4,
"MAPINFO={" + 1 + "," + 1 + "}:{" + dstEnvelope.MinX + "," + dstEnvelope.MaxY + "}:{" + prjSettings.OutResolutionX + "," + prjSettings.OutResolutionY + "}"
};
dstRaster = drv.Create(outfilename, dstSize.Width, dstSize.Height, dstBandCount, enumDataType.UInt16, options) as IRasterDataProvider;
}
ProjectToLDF(srcRaster, dstRaster, 0, progressCallback);
return(dstRaster);
}
catch
{
EndSession();
TryDeleteCurCatch();
throw;
}
finally
{
EndSession();
if (prjSettings.IsClearPrjCache)
{
TryDeleteCurCatch();
}
}
}
private void ReadyArgs(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
if (srcRaster == null)
{
throw new ArgumentNullException("srcRaster");
}
if (prjSettings == null)
{
throw new ArgumentNullException("prjSettings");
}
_readyProgress = 0;
_prjSettings = prjSettings as FY3_VIRR_PrjSettings;
_geoDataProvider = (prjSettings as FY3_VIRR_PrjSettings).GeoFile;
_dstSpatialRef = dstSpatialRef;
MemoryHelper.MemoryNeed(200, 1536);//剩余200MB,已使用1.2GB
if (progressCallback != null)
{
progressCallback(_readyProgress++, "准备相关参数");
}
TryCreateDefaultArgs(srcRaster, _prjSettings, ref dstSpatialRef);
//这里去除的是读取轨道数据时候的左右像元个数。
_left = 8;
_right = 8;
TrySetLeftRightInvalidPixel(_prjSettings.ExtArgs);
DoSession(srcRaster, _geoDataProvider, dstSpatialRef, _prjSettings, progressCallback);
if (prjSettings.OutEnvelope == null || prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
prjSettings.OutEnvelope = _maxPrjEnvelope;
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = srcRaster.Width - 1, yEnd = srcRaster.Height - 1
};
}
else
{
GetEnvelope(_xs, _ys, srcRaster.Width, srcRaster.Height, _prjSettings.OutEnvelope, out _orbitBlock);
if (_orbitBlock == null || _orbitBlock.Width <= 0 || _orbitBlock.Height <= 0)
{
throw new Exception("数据不在目标区间内");
}
float invalidPresent = (_orbitBlock.Width * _orbitBlock.Height * 1.0F) / (srcRaster.Width * srcRaster.Height);
if (invalidPresent < 0.0001f)
{
throw new Exception("数据占轨道数据比例太小,有效率" + invalidPresent * 100 + "%");
}
if (invalidPresent > 0.60)
{
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = srcRaster.Width - 1, yEnd = srcRaster.Height - 1
}
}
;
}
//if (dstSpatialRef.ProjectionCoordSystem == null && (prjSettings.OutEnvelope.MaxY > 80 || prjSettings.OutEnvelope.MaxY < -80))
// throw new Exception(string.Format("高纬度数据，不适合投影为等经纬度数据[{0}]", _maxPrjEnvelope));
_dstSpatialRef = dstSpatialRef;
_dstEnvelope = _prjSettings.OutEnvelope;
if (!_dstEnvelope.IntersectsWith(_maxPrjEnvelope))
{
throw new Exception("数据不在目标区间内");
}
_outResolutionX = _prjSettings.OutResolutionX;
_outResolutionY = _prjSettings.OutResolutionY;
_outFormat = _prjSettings.OutFormat;
_outfilename = _prjSettings.OutPathAndFileName;
_dstProj4 = _dstSpatialRef.ToProj4String();
_dstBandCount = _prjBands.Length;
_dstSize = _prjSettings.OutSize;
_isRadiation = _prjSettings.IsRadiation;
_isSolarZenith = _prjSettings.IsSolarZenith;
_isSensorZenith = _prjSettings.IsSensorZenith;
}
private void ProjectToLDF0500(IRasterDataProvider srcRaster, Size srcLocationSize, EOS_MODIS_PrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
if (srcRaster == null || srcRaster.Width == 0 || srcRaster.Height == 0)
{
throw new Exception("投影250米MERSI数据失败：无法读取源数据,或者源数据高或宽为0。");
}
Size srcDataSize = new Size(srcRaster.Width, srcRaster.Height);
string outFormat = prjSettings.OutFormat;
string outfilename = prjSettings.OutPathAndFileName;
string dstProj4 = dstSpatialRef.ToProj4String();
List <BandMap> bandMaps = prjSettings.BandMapTable;
int dstBandCount = bandMaps.Count;
Size dstSize = prjSettings.OutSize;
using (IRasterDataDriver drv = GeoDataDriver.GetDriverByName("LDF") as IRasterDataDriver)
{
PrjEnvelope dstEnvelope = prjSettings.OutEnvelope;
string mapInfo = "MAPINFO={" + 1 + "," + 1 + "}:{" + dstEnvelope.MinX + "," + dstEnvelope.MaxY + "}:{" + prjSettings.OutResolutionX + "," + prjSettings.OutResolutionY + "}";
using (IRasterDataProvider prdWriter = drv.Create(outfilename, dstSize.Width, dstSize.Height, dstBandCount,
enumDataType.UInt16, "INTERLEAVE=BSQ", "VERSION=LDF", "SPATIALREF=" + dstProj4, mapInfo, "WITHHDR=TRUE") as IRasterDataProvider)
{
//考虑分块
float outResolutionX = prjSettings.OutResolutionX;
float outResolutionY = prjSettings.OutResolutionY;
Size outSize = dstEnvelope.GetSize(outResolutionX, outResolutionY);
#region 计算分块个数、分块高宽
int blockXNum;
int blockYNum;
int blockWidth;
int blockHeight;
GetBlockNumber(outSize, out blockXNum, out blockYNum, out blockWidth, out blockHeight);
#endregion
Size blockSize = new Size(blockWidth, blockHeight);
for (int blockYIndex = 0; blockYIndex < blockYNum; blockYIndex++)
{
for (int blockXIndex = 0; blockXIndex < blockXNum; blockXIndex++)
{
//当前块的四角范围
double blockMinX = dstEnvelope.MinX + blockWidth * outResolutionX * blockXIndex;
double blockMaxX = blockMinX + blockWidth * outResolutionX;
double blockMaxY = dstEnvelope.MaxY - blockHeight * outResolutionY * blockYIndex;
double blockMinY = blockMaxY - blockHeight * outResolutionY;
PrjEnvelope blockEnvelope = new PrjEnvelope(blockMinX, blockMaxX, blockMinY, blockMaxY);
UInt16[] dstRowLookUpTable = new UInt16[blockWidth * blockHeight];
UInt16[] dstColLookUpTable = new UInt16[blockWidth * blockHeight];
_rasterProjector.ComputeIndexMapTable(_xs, _ys, srcLocationSize, srcDataSize, blockSize, blockEnvelope,
out dstRowLookUpTable, out dstColLookUpTable, progressCallback);
//执行投影
UInt16[] srcBandData = null;
UInt16[] dstBandData = new UInt16[blockWidth * blockHeight];
for (int i = 0; i < dstBandCount; i++) //读取原始通道值，投影到目标区域
{
BandMap bandMap = bandMaps[i];
ReadBandData(out srcBandData, bandMap.File, bandMap.DatasetName, bandMap.BandIndex, srcDataSize);
if (prjSettings.IsRadiation) //亮温转换，这里处理的不好，如果是做了一个小块的分幅，这里花的代价太高,
{
DoRadiation(srcBandData, srcDataSize, srcLocationSize, bandMap.DatasetName, bandMap.BandIndex, srcRaster, prjSettings.IsRadiation, prjSettings.IsSolarZenith);
}
_rasterProjector.Project <UInt16>(srcBandData, srcDataSize, dstRowLookUpTable, dstColLookUpTable, blockSize, dstBandData, 0, progressCallback);
using (IRasterBand band = prdWriter.GetRasterBand(i + 1))
{
unsafe
{
fixed(UInt16 *ptr = dstBandData)
{
IntPtr bufferPtr = new IntPtr(ptr);
int blockOffsetY = blockYIndex * blockSize.Height;
int blockOffsetX = blockWidth * blockXIndex;
band.Write(blockOffsetX, blockOffsetY, blockWidth, blockHeight, bufferPtr, enumDataType.UInt16, blockWidth, blockHeight);
}
}
}
}
}
}
}
}
}
private void ReadyArgs(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
if (srcRaster.DataIdentify != null)
{
string satellite = srcRaster.DataIdentify.Satellite;
//if (satellite == "FY3A")//FY3A MERSI250米数据已经经过处理，不需要再执行去条带操作
//{
// _sacnLineWidth = 0;
//}
}
float resolutionScale = 1f;
_readyProgress = 0;
if (progressCallback != null)
{
progressCallback(_readyProgress++, "准备相关参数");
}
_prjSettings = ArgsCheck(srcRaster, prjSettings);
CheckIs0250(srcRaster);
_dstSpatialRef = dstSpatialRef;
switch (_dataType)
{
case "1KM":
//整轨投影时候去除左右锯齿，分块投影不需要
_left = 10;
_right = 10;
if (_prjSettings.OutEnvelope == null || _prjSettings.OutEnvelope == PrjEnvelope.Empty) //整轨投影
{
MemoryHelper.MemoryNeed(500, 1536);
}
else
{
MemoryHelper.MemoryNeed(400, 1536); //剩余900MB,已使用1.2GB
}
TryCreateDefaultArgs(srcRaster, _prjSettings, ref _dstSpatialRef);
DoSession(srcRaster, srcRaster, _dstSpatialRef, _prjSettings, progressCallback);
_angleDataProvider = srcRaster;
break;
case "QKM":
resolutionScale = 4f;
_left = 20;
_right = 20;
if (_prjSettings.OutEnvelope == null || _prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
MemoryHelper.MemoryNeed(800, 1280); //整幅投影对内存做限制，系统剩余内存不低于1.5GB，应用程序已使用内存不超过600MB
}
else
{
MemoryHelper.MemoryNeed(600, 1280); //剩余900MB,已使用1.2GB
}
TryCreate0250DefaultArgs(srcRaster, _prjSettings, ref _dstSpatialRef);
DoSession(srcRaster, _prjSettings.SecondaryOrbitRaster, _dstSpatialRef, _prjSettings, progressCallback);
_angleDataProvider = _prjSettings.SecondaryOrbitRaster;
break;
default:
break;
}
TrySetLeftRightInvalidPixel(_prjSettings.ExtArgs);
if (_prjSettings.OutEnvelope == null || _prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
_prjSettings.OutEnvelope = _maxPrjEnvelope;
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = _srcLocationSize.Width - 1, yEnd = _srcLocationSize.Height - 1
};
}
else
{
GetEnvelope(_xs, _ys, _srcLocationSize.Width, _srcLocationSize.Height, _prjSettings.OutEnvelope, out _orbitBlock);
if (_orbitBlock == null || _orbitBlock.Width <= 0 || _orbitBlock.Height <= 0)
{
throw new Exception("数据不在目标区间内");
}
float invalidPresent = (_orbitBlock.Width * _orbitBlock.Height * resolutionScale) / (_srcLocationSize.Width * _srcLocationSize.Height);
if (invalidPresent < 0.0001f)
{
throw new Exception("数据占轨道数据比例太小,有效率" + invalidPresent * 100 + "%");
}
if (invalidPresent > 0.60)
{
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = _srcLocationSize.Width - 1, yEnd = _srcLocationSize.Height - 1
}
}
;
}
//地理坐标投影,下面简单的对地理坐标投影的范围作了限制，不大严谨，仅适合目前的状况。
if (_dstSpatialRef.ProjectionCoordSystem == null && (prjSettings.OutEnvelope.MaxY > 80 || prjSettings.OutEnvelope.MaxY < -80))
{
throw new Exception(string.Format("高纬度数据，不适合投影为等经纬度数据[{0}]", _maxPrjEnvelope));
}
//以下参数用于投影
_dstEnvelope = _prjSettings.OutEnvelope;
if (!_dstEnvelope.IntersectsWith(_maxPrjEnvelope))
{
throw new Exception("数据不在目标区间内");
}
_outResolutionX = _prjSettings.OutResolutionX;
_outResolutionY = _prjSettings.OutResolutionY;
_outFormat = _prjSettings.OutFormat;
_outfilename = _prjSettings.OutPathAndFileName;
_dstProj4 = _dstSpatialRef.ToProj4String();
_dstBandCount = _prjBands.Length;
_dstSize = _prjSettings.OutSize;
_isRadiation = _prjSettings.IsRadiation;
_isSolarZenith = _prjSettings.IsSolarZenith;
_isSensorZenith = _prjSettings.IsSensorZenith;
}
private void ReadyArgs(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
float resolutionScale = 1f;
_readyProgress = 0;
if (progressCallback != null)
{
progressCallback(_readyProgress++, "准备相关参数");
}
_prjSettings = ArgsCheck(srcRaster, prjSettings);
_geoDataProvider = _prjSettings.GeoFile;
CheckIs0250(srcRaster);
_dstSpatialRef = dstSpatialRef;
switch (_dataType)
{
case "1KM":
//整轨投影时候去除左右锯齿，分块投影不需要
_left = 10;
_right = 10;
if (_prjSettings.OutEnvelope == null || _prjSettings.OutEnvelope == PrjEnvelope.Empty) //整轨投影时做限制
{
MemoryHelper.MemoryNeed(500, 1536);
}
else
{
MemoryHelper.MemoryNeed(400, 1536); //剩余900MB,已使用1.2GB
}
//_angleDataProvider = srcRaster;
TryCreateDefaultArgs(srcRaster, _prjSettings, ref _dstSpatialRef);
TrySetLeftRightInvalidPixel(_prjSettings.ExtArgs);
DoSession(srcRaster, _geoDataProvider, _dstSpatialRef, _prjSettings, progressCallback);
break;
case "QKM":
resolutionScale = 4f;
_left = 20;
_right = 20;
if (_prjSettings.OutEnvelope == null || _prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
MemoryHelper.MemoryNeed(800, 1280); //整幅投影对内存做限制，系统剩余内存不低于A参数MB，应用程序已使用内存不超过B参数MB
}
else
{
MemoryHelper.MemoryNeed(600, 1280); //剩余900MB,最大已使用1.2GB
}
//_angleDataProvider = _prjSettings.SecondaryOrbitRaster;
TryCreate0250DefaultArgs(srcRaster, _prjSettings, ref _dstSpatialRef);
TrySetLeftRightInvalidPixel(_prjSettings.ExtArgs);
DoSession(srcRaster, _geoDataProvider, _dstSpatialRef, _prjSettings, progressCallback);
break;
default:
break;
}
if (_prjSettings.OutEnvelope == null || _prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
_prjSettings.OutEnvelope = _maxPrjEnvelope;
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = _srcLocationSize.Width - 1, yEnd = _srcLocationSize.Height - 1
};
}
else
{
if (_xs != null && _ys != null)
{
GetEnvelope(_xs, _ys, _srcLocationSize.Width, _srcLocationSize.Height, _prjSettings.OutEnvelope, out _orbitBlock);
}
else
{
int bC = 8;
int tmpWidth = 0;
int tmpHeight = 0;
double[] tmpxs = null;
double[] tmpys = null;
//8024，8000
tmpWidth = _srcLocationSize.Width / bC;
tmpHeight = _srcLocationSize.Height / bC;
tmpxs = ReadSampleDatas(_longitudeBand, 0, 0, tmpWidth, tmpHeight);
tmpys = ReadSampleDatas(_latitudeBand, 0, 0, tmpWidth, tmpHeight);
_rasterProjector.Transform(SpatialReference.GetDefault(), tmpxs, tmpys, _dstSpatialRef);
//计算偏移
GetEnvelope(tmpxs, tmpys, tmpWidth, tmpHeight, _prjSettings.OutEnvelope, out _orbitBlock);
_orbitBlock = _orbitBlock.Zoom(bC, bC);
}
if (_orbitBlock == null || _orbitBlock.Width <= 0 || _orbitBlock.Height <= 0)
{
throw new Exception("数据不在目标区间内");
}
float invalidPresent = (_orbitBlock.Width * _orbitBlock.Height * resolutionScale) / (_srcLocationSize.Width * _srcLocationSize.Height);
if (invalidPresent < 0.0001f)
{
throw new Exception("数据占轨道数据比例太小,有效率" + invalidPresent * 100 + "%");
}
if (invalidPresent > 0.60)
{
_orbitBlock = new Block {
xOffset = 0, yBegin = 0, xEnd = _srcLocationSize.Width - 1, yEnd = _srcLocationSize.Height - 1
}
}
;
}
//地理坐标投影,下面简单的对地理坐标投影的范围作了限制，不大严谨，仅适合目前的状况。
if (_dstSpatialRef.ProjectionCoordSystem == null && (prjSettings.OutEnvelope.MaxY > 80 || prjSettings.OutEnvelope.MaxY < -80))
{
throw new Exception(string.Format("高纬度数据，不适合投影为等经纬度数据[{0}]", _maxPrjEnvelope));
}
//以下参数用于投影
_dstEnvelope = _prjSettings.OutEnvelope;
if (!_dstEnvelope.IntersectsWith(_maxPrjEnvelope))
{
throw new Exception("数据不在目标区间内");
}
_outResolutionX = _prjSettings.OutResolutionX;
_outResolutionY = _prjSettings.OutResolutionY;
_outFormat = _prjSettings.OutFormat;
_outfilename = _prjSettings.OutPathAndFileName;
_dstProj4 = _dstSpatialRef.ToProj4String();
_dstBandCount = _prjBands.Length;
_dstSize = _prjSettings.OutSize;
_isRadiation = _prjSettings.IsRadiation;
_isSolarZenith = _prjSettings.IsSolarZenith;
_isSensorZenith = _prjSettings.IsSensorZenith;
}
/// <summary>
/// 0、先生成目标文件，以防止目标空间不足。
/// 1、计算查找表
/// 2、读取通道数据
/// 3、计算通道数据亮温
/// 4、投影通道。
/// </summary>
private void ProjectToLDF(IRasterDataProvider srcRaster, NOAA_PrjSettings prjSettings, ISpatialReference dstSpatialRef, Action <int, string> progressCallback)
{
string outFormat = prjSettings.OutFormat;
string outfilename = prjSettings.OutPathAndFileName;
string dstProj4 = dstSpatialRef.ToProj4String();
int[] outBandNos = prjSettings.OutBandNos;
int dstBandCount = outBandNos.Length;
Size srcSize = new Size(srcRaster.Width, srcRaster.Height);
Size dstSize = prjSettings.OutSize;
Size srcJdSize = srcSize;
using (IRasterDataDriver drv = GeoDataDriver.GetDriverByName("LDF") as IRasterDataDriver)
{
PrjEnvelope dstEnvelope = prjSettings.OutEnvelope;
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + dstSpatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + dstEnvelope.MinX + "," + dstEnvelope.MaxY + "}:{" + prjSettings.OutResolutionX + "," + prjSettings.OutResolutionY + "}"
, "BANDNAMES=" + BandNameString(prjSettings.OutBandNos)
};
if (progressCallback != null)
{
progressCallback(6, "生成输出文件");
}
using (IRasterDataProvider prdWriter = drv.Create(outfilename, dstSize.Width, dstSize.Height, dstBandCount, enumDataType.UInt16, options) as IRasterDataProvider)
{
float outResolutionX = prjSettings.OutResolutionX;
float outResolutionY = prjSettings.OutResolutionY;
Size outSize = dstEnvelope.GetSize(outResolutionX, outResolutionY);
int blockXNum = 0;
int blockYNum = 0;
int blockWidth = 0;
int blockHeight = 0;
GetBlockNumber(outSize, out blockXNum, out blockYNum, out blockWidth, out blockHeight);
Size dstBlockSize = new Size(blockWidth, blockHeight);
UInt16[] dstRowBlockLUT = new UInt16[blockWidth * blockHeight];
UInt16[] dstColBlockLUT = new UInt16[blockWidth * blockHeight];
int blockCount = blockYNum * blockXNum;
int progress = 0;
int percent = 0;
int progressCount = blockCount * dstBandCount;
for (int blockYIndex = 0; blockYIndex < blockYNum; blockYIndex++)
{
for (int blockXIndex = 0; blockXIndex < blockXNum; blockXIndex++)
{
PrjEnvelope blockEnvelope = null;
Block orbitBlock = null; //经纬度数据集，计算轨道数据范围偏移
double[] blockOrbitXs = null;
double[] blockOrbitYs = null;
if (blockCount == 1) //没分块的情况
{
orbitBlock = _orbitBlock;
if (_orbitBlock.Width == srcJdSize.Width && _orbitBlock.Height == srcJdSize.Height)
{
blockOrbitXs = _xs;
blockOrbitYs = _ys;
}
else //源
{
GetBlockDatas(_xs, _ys, srcJdSize.Width, srcJdSize.Height, orbitBlock.xOffset, orbitBlock.yBegin, orbitBlock.Width, orbitBlock.Height, out blockOrbitXs, out blockOrbitYs);
}
blockEnvelope = dstEnvelope;
}
else
{
//当前块的四角范围
double blockMinX = dstEnvelope.MinX + blockWidth * outResolutionX * blockXIndex;
double blockMaxX = blockMinX + blockWidth * outResolutionX;
double blockMaxY = dstEnvelope.MaxY - blockHeight * outResolutionY * blockYIndex;
double blockMinY = blockMaxY - blockHeight * outResolutionY;
blockEnvelope = new PrjEnvelope(blockMinX, blockMaxX, blockMinY, blockMaxY);
//根据当前输出块，反推出对应的源数据块起始行列
GetEnvelope(_xs, _ys, srcJdSize.Width, srcJdSize.Height, blockEnvelope, out orbitBlock);
if (orbitBlock.Width <= 0 || orbitBlock.Height <= 0) //当前分块不在图像内部
{
progress += dstBandCount;
continue;
}
GetBlockDatas(_xs, _ys, srcJdSize.Width, srcJdSize.Height, orbitBlock.xOffset, orbitBlock.yBegin, orbitBlock.Width, orbitBlock.Height, out blockOrbitXs, out blockOrbitYs);
}
float[] solarZenithData = null;
if (prjSettings.IsRadiation && prjSettings.IsSolarZenith)
{
if (File.Exists(_szDataFilename))
{
ReadBandData(out solarZenithData, _solarZenithCacheRaster, 1, orbitBlock.xOffset, orbitBlock.yBegin, orbitBlock.Width, orbitBlock.Height);
}
TryReadZenithData(orbitBlock.xOffset, orbitBlock.yBegin, orbitBlock.Width, orbitBlock.Height);
}
Size orbitBlockSize = new Size(orbitBlock.Width, orbitBlock.Height);
_rasterProjector.ComputeIndexMapTable(blockOrbitXs, blockOrbitYs, orbitBlockSize, dstBlockSize, blockEnvelope, _maxPrjEnvelope, out dstRowBlockLUT, out dstColBlockLUT, null);
//执行投影
UInt16[] srcBandData = new UInt16[orbitBlock.Width * orbitBlock.Height];
UInt16[] dstBandData = new UInt16[blockWidth * blockHeight];
for (int i = 0; i < dstBandCount; i++) //读取原始通道值，投影到目标区域
{
if (progressCallback != null)
{
progress++;
percent = progress * 100 / progressCount;
progressCallback(percent, string.Format("投影第{0}/{1}块,第{2}/{3}通道", blockXIndex + blockYIndex, blockCount, i + 1, dstBandCount));
}
int bandNo = outBandNos[i];
ReadBandData(srcBandData, srcRaster, bandNo, orbitBlock.xOffset, orbitBlock.yBegin, orbitBlock.Width, orbitBlock.Height);
if (prjSettings.IsRadiation)
{
DoRadiation(srcBandData, orbitBlock.xOffset, orbitBlock.yBegin, orbitBlock.Size, bandNo, prjSettings.IsRadiation, prjSettings.IsSolarZenith, solarZenithData);
}
_rasterProjector.Project <UInt16>(srcBandData, orbitBlock.Size, dstRowBlockLUT, dstColBlockLUT, dstBlockSize, dstBandData, 0, null);
IRasterBand band = prdWriter.GetRasterBand(i + 1);
{
unsafe
{
fixed(UInt16 *ptr = dstBandData)
{
IntPtr bufferPtr = new IntPtr(ptr);
int blockOffsetY = blockYIndex * dstBlockSize.Height;
int blockOffsetX = blockXIndex * dstBlockSize.Width;
band.Write(blockOffsetX, blockOffsetY, blockWidth, blockHeight, bufferPtr, enumDataType.UInt16, blockWidth, blockHeight);
}
}
}
}
ReleaseZenithData();
srcBandData = null;
dstBandData = null;
blockOrbitXs = null;
blockOrbitYs = null;
}
}
dstRowBlockLUT = null;
dstColBlockLUT = null;
}
}
}
