public override void Project(AbstractWarpDataset srcRaster, FilePrjSettings prjSettings, SpatialReference dstSpatialRef, Action <int, string> progressCallback, double weight, float zoom)
{
SpatialReference srcSpatialRef = (srcRaster.SpatialRef);
_projectionTransform = ProjectionTransformFactory.GetProjectionTransform(srcSpatialRef, dstSpatialRef);
ArgsCheck(srcRaster, prjSettings, dstSpatialRef);
ReadySession(srcRaster, prjSettings, dstSpatialRef, progressCallback);
if (prjSettings.OutEnvelope == null || prjSettings.OutEnvelope == PrjEnvelope.Empty)
{
PrjEnvelope dstEnvelope = null;
float srcResolutionX = srcRaster.ResolutionX;
float srcResolutionY = srcRaster.ResolutionY;
double srcLeftTopX = srcRaster.GetEnvelope().MinX;
double srcLeftTopY = srcRaster.GetEnvelope().MaxY;
int srcWidth = srcRaster.Width;
int srcHeight = srcRaster.Height;
Size srcSize = new Size(srcWidth, srcHeight);
int wSample = 1;
int hSample = 1;
if (srcWidth > 1000)
{
wSample = srcWidth / 1000;
}
if (srcHeight > 1000)
{
hSample = srcHeight / 1000;
}
double[] xs = new double[(srcWidth / wSample) * (srcHeight / hSample)];
double[] ys = new double[(srcWidth / wSample) * (srcHeight / hSample)];
int index = 0;//非真实的索引号，采样后的
for (int rowInx = 0; rowInx <= (srcHeight - hSample); rowInx += hSample)
{
for (int colInx = 0; colInx <= (srcWidth - wSample); colInx += wSample)
{
xs[index] = srcLeftTopX + colInx * srcResolutionX;
ys[index] = srcLeftTopY - rowInx * srcResolutionY;
index++;
}
}
_rasterProjector.ComputeDstEnvelope(srcSpatialRef, xs, ys, srcSize, dstSpatialRef, out dstEnvelope, null);
prjSettings.OutEnvelope = dstEnvelope;
}
GC.Collect();
ProjectToLDF(srcRaster, prjSettings, dstSpatialRef, progressCallback, weight, zoom);
}
public override AbstractWarpDataset Project(AbstractWarpDataset srcRaster, FilePrjSettings prjSettings, AbstractWarpDataset dstRaster, int beginBandIndex, Action <int, string> progressCallback)
{
if (dstRaster == null)
{
return(null);
}
try
{
ReadyArgs(srcRaster, prjSettings, (dstRaster.SpatialRef), progressCallback);
_prjSettings.OutPathAndFileName = dstRaster.fileName;
_outfilename = dstRaster.fileName;
_outResolutionX = dstRaster.ResolutionX;
_outResolutionY = dstRaster.ResolutionY;
_dstEnvelope = _prjSettings.OutEnvelope = new PrjEnvelope(
dstRaster.GetEnvelope().MinX, dstRaster.GetEnvelope().MaxX,
dstRaster.GetEnvelope().MinY, dstRaster.GetEnvelope().MaxY, _dstSpatialRef);
try
{
Size outSize = new Size(dstRaster.Width, dstRaster.Height);
//角度输出，其中的BANDNAME需要在ReadyAngleFiles()方法中获取
string[] angleOptions = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + _dstSpatialRef.ExportToProj4(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + _prjSettings.OutEnvelope.MinX + "," + _prjSettings.OutEnvelope.MaxY + "}:{" + _outResolutionX + "," + _outResolutionY + "}"
};
ReadyAngleFiles(_angleDataProvider, _outfilename, _prjSettings, outSize, angleOptions);
UpdateNodataValue(dstRaster);
ProjectToLDF(srcRaster, dstRaster, beginBandIndex, progressCallback);
return(dstRaster);
}
catch (IOException ex)
{
if (ex.Message == "磁盘空间不足。\r\n" && File.Exists(_outfilename))
{
File.Delete(_outfilename);
}
throw ex;
}
finally
{
if (dstRaster != null)
{
dstRaster.Dispose();
dstRaster = null;
}
}
}
catch
{
EndSession();
TryDeleteCurCatch();
throw;
}
finally
{
if (_curSession == null)
{
EndSession();
if (prjSettings.IsClearPrjCache)
{
TryDeleteCurCatch();
}
}
}
}
/// <summary>
/// 投影
/// </summary>
/// <param name="srcRaster"></param>
/// <param name="prjSettings"></param>
/// <param name="dstRaster"></param>
/// <param name="beginBandIndex"></param>
/// <param name="progressCallback"></param>
/// <returns></returns>
public override AbstractWarpDataset Project(AbstractWarpDataset srcRaster, FilePrjSettings prjSettings, AbstractWarpDataset dstRaster, int beginBandIndex, Action <int, string> progressCallback)
{
if (dstRaster == null)
{
return(null);
}
try
{
_dstSpatialRef = dstRaster.SpatialRef;
var coordEnv = dstRaster.GetEnvelope();
prjSettings.OutEnvelope = new PrjEnvelope()
{
Srs = _dstSpatialRef,
MinX = coordEnv.MinX,
MinY = coordEnv.MinY,
MaxX = coordEnv.MaxX,
MaxY = coordEnv.MaxY
};
ReadyArgs(srcRaster, prjSettings, _dstSpatialRef, progressCallback);
string outfilename = _prjSettings.OutPathAndFileName;
try
{
Size outSize = new Size(dstRaster.Width, dstRaster.Height);
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + _dstSpatialRef.ExportToProj4(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + _prjSettings.OutEnvelope.MinX + "," + _prjSettings.OutEnvelope.MaxY + "}:{" + dstRaster.ResolutionX + "," + dstRaster.ResolutionY + "}"
, "BANDNAMES=" + BandNameString(_prjSettings.OutBandNos)
};
//ReadyAngleFiles(_angleDataProvider, outfilename, _prjSettings, outSize, options);
ProjectRaster(srcRaster, dstRaster, beginBandIndex, progressCallback);
return(dstRaster);
}
catch (IOException ex)
{
if (ex.Message == "磁盘空间不足。\r\n" && File.Exists(outfilename))
{
File.Delete(outfilename);
}
throw ex;
}
finally
{
if (dstRaster != null)
{
dstRaster.Dispose();
dstRaster = null;
}
}
}
catch
{
EndSession();
TryDeleteCurCatch();
throw;
}
finally
{
if (_curSession == null)
{
EndSession();
if (prjSettings.IsClearPrjCache)
{
TryDeleteCurCatch();
}
}
}
}
private void ProjectRaster <T>(AbstractWarpDataset srcRaster, FilePrjSettings prjSettings, Action <int, string> progressCallback, AbstractWarpDataset prdWriter, T fillValue, double dataWeight, float zoom)
{
DataType dataType = prdWriter.DataType;
PrjEnvelope outEnvelope = prjSettings.OutEnvelope;
float outResolutionX = prjSettings.OutResolutionX;
float outResolutionY = prjSettings.OutResolutionY;
Size outSize = prjSettings.OutSize;
int outWidth = outSize.Width;
int outHeight = outSize.Height;
int outBandCount = prjSettings.OutBandNos.Length;
if (progressCallback != null)
{
progressCallback(_readyProgress++, "投影准备");
}
int srcHeight = srcRaster.Height;
int srcWidth = srcRaster.Width;
PrjPoint outLeftTopPoint = outEnvelope.LeftTop;
float srcResolutionX = srcRaster.ResolutionX;
float srcResolutionY = srcRaster.ResolutionY;
Size srcSize = new Size(srcWidth, srcHeight);
double outLtPointX = outLeftTopPoint.X;
double outLtPointY = outLeftTopPoint.Y;
PrjEnvelope srcEnvelope = new PrjEnvelope(srcRaster.GetEnvelope().MinX, srcRaster.GetEnvelope().MaxX, srcRaster.GetEnvelope().MinY, srcRaster.GetEnvelope().MaxY, null);
ulong mem = MemoryHelper.GetAvalidPhyMemory();
#if !WIN64
mem = mem < 800 * 1024 * 1024 ? mem : 800 * 1024 * 1024;
#endif
ulong maxLimit = mem / (6 * 8 * 2);
int rowStep = (int)(maxLimit / (UInt32)outWidth);
if (rowStep == 0)
{
rowStep = 1;
}
if (rowStep > outHeight)
{
rowStep = outHeight;
}
int stepCount = (int)(Math.Ceiling((double)outHeight / rowStep));
int percent = 0;
int progress = 0;
int progressCount = outBandCount * stepCount + stepCount * 2;
for (int oRow = 0; oRow < outHeight; oRow += rowStep)
{
if (progressCallback != null)
{
percent++;
progress = percent * 100 / progressCount;
progressCallback(progress, string.Format("投影完成{0}%", progress));
}
if (oRow + rowStep > outHeight)
{
rowStep = outHeight - oRow;
}
Size outStepSize = new Size(outWidth, rowStep);
double[] xs = new double[outWidth * rowStep];
double[] ys = new double[outWidth * rowStep];
double oY = oRow * outResolutionY;
Parallel.For(0, rowStep, j =>
{
double x;
double y;
int index;
y = outLtPointY - j * outResolutionY - oY;
for (int i = 0; i < outWidth; i++)
{
x = outLtPointX + i * outResolutionX;
index = i + j * outWidth;
xs[index] = x;
ys[index] = y;
}
});
_projectionTransform.InverTransform(xs, ys);
PrjEnvelope tEnvelope = PrjEnvelope.GetEnvelope(xs, ys, null);
tEnvelope.Extend(srcResolutionX, srcResolutionY * 4);
tEnvelope = PrjEnvelope.Intersect(tEnvelope, srcEnvelope);
if (tEnvelope == null || tEnvelope.IsEmpty)
{
continue;
}
Size tSize = tEnvelope.GetSize(srcResolutionX, srcResolutionY);
int tBeginRow = -1, tEndRow = -1, tBeginCol = -1, tEndCol = -1;
int oBeginRow = -1, oEndRow = -1, oBeginCol = -1, oEndCol = -1;
PrjBlockHelper.ComputeBeginEndRowCol(srcEnvelope, srcSize, tEnvelope, tSize,
ref oBeginRow, ref oBeginCol, ref oEndRow, ref oEndCol,
ref tBeginRow, ref tBeginCol, ref tEndRow, ref tEndCol);
int srcStepWidth = oEndCol - oBeginCol;
int srcStepHeight = oEndRow - oBeginRow;
Size srcStepSize = new Size(srcStepWidth, srcStepHeight);
T[] srcBandData = new T[srcStepWidth * srcStepHeight];
T[] dstBandData = new T[outWidth * rowStep];
double srcStepLeftTopX = tEnvelope.MinX;
double srcStepLeftTopY = tEnvelope.MaxY;
double srcStepRightBottomX = tEnvelope.MaxX;
double srcStepRightBottomY = tEnvelope.MinY;
UInt16[] rows = new UInt16[outWidth * rowStep]; //正向查找表
UInt16[] cols = new UInt16[outWidth * rowStep]; //正向查找表
if (progressCallback != null)
{
percent++;
progress = percent * 100 / progressCount;
progressCallback(progress, string.Format("投影完成{0}%", progress));
}
Parallel.For(0, rowStep, j =>
{
double x;
double y;
int index;
for (int i = 0; i < outWidth; i++)
{
index = i + j * outWidth;
x = xs[index];
y = ys[index];
if (x >= srcStepLeftTopX && x <= srcStepRightBottomX && y <= srcStepLeftTopY && y >= srcStepRightBottomY)
{
cols[index] = (UInt16)((x - srcStepLeftTopX) / srcResolutionX + 0.5);
rows[index] = (UInt16)((srcStepLeftTopY - y) / srcResolutionY + 0.5);
}
}
});
xs = null;
ys = null;
for (int b = 0; b < outBandCount; b++)
{
if (progressCallback != null)
{
percent++;
progress = percent * 100 / progressCount;
progressCallback(progress, string.Format("投影完成{0}%", progress));
}
ReadBandData <T>(srcBandData, b, oBeginCol, oBeginRow, srcStepWidth, srcStepHeight, dataType);
//用于测试全图输出结果，用于查看插值的效果：
#if DebugEaseGrid
GCHandle hTe = GCHandle.Alloc(srcBandData, GCHandleType.Pinned);
try
{ Random random = new Random(12);
IntPtr bufferPtr = hTe.AddrOfPinnedObject();
Int16[] tmp = new Int16[srcBandData.Length];
for (int i = 0; i < srcBandData.Length; i++)
{
tmp[i] = (Int16)random.Next(200, 255);
}
Marshal.Copy(tmp, 0, bufferPtr, tmp.Length); }
finally
{
hTe.Free();
}
#endif
_rasterProjector.Project <T>(srcBandData, srcStepSize, rows, cols, outStepSize, dstBandData, fillValue, 0, null);
if (dataWeight == 1)
{
WriteDataToLDF <T>(prdWriter, dataType, outWidth, rowStep, oRow, dstBandData, b);
}
else
{
WriteDataToLDF <T>(prdWriter, dataType, outWidth, rowStep, oRow, dstBandData, b, dataWeight, zoom);
}
}
rows = null;
rows = null;
srcBandData = null;
dstBandData = null;
}
}
