public void RastAndProject <T>(Size outSize, H5T.H5Type ht5type, H5FileId fileId, string dataset, Action <int, string> progressCallback, int outWidth, int outHeight, int rowStep, IRasterDataProvider srcRaster, FilePrjSettings prjSettings, int bandnum, T fillValue, HDF5.Hdf5Operator ope)
{
T[,] data = new T[outSize.Height, outSize.Width];
// 定义数据集操作部分
long[] dims = new long[2];
dims[0] = Convert.ToInt64(outSize.Height);
dims[1] = Convert.ToInt64(outSize.Width);
H5DataSpaceId dspaceId = H5S.create_simple(2, dims);
// Define datatype for the data in the file.
H5DataTypeId dtypeId = H5T.copy(ht5type);
// Create the data set DATASETNAME.
H5DataSetId dsetId = H5D.create(fileId, dataset, dtypeId, dspaceId);
for (int oRow = 0; oRow < outHeight; oRow += rowStep)
{
#region 分块读取数据集
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 * prjSettings.OutResolutionY;
Parallel.For(0, rowStep, j =>
{
double x;
double y;
int index;
y = prjSettings.OutEnvelope.LeftTop.Y - j * prjSettings.OutResolutionY - oY;
for (int i = 0; i < outWidth; i++)
{
x = prjSettings.OutEnvelope.LeftTop.Y + i * prjSettings.OutResolutionX;
index = i + j * outWidth;
xs[index] = x;
ys[index] = y;
}
});
_projectionTransform.InverTransform(xs, ys);
PrjEnvelope tEnvelope = PrjEnvelope.GetEnvelope(xs, ys, null);
tEnvelope.Extend(srcRaster.ResolutionX, srcRaster.ResolutionY * 4);
PrjEnvelope srcEnvelope = new PrjEnvelope(srcRaster.CoordEnvelope.MinX, srcRaster.CoordEnvelope.MaxX, srcRaster.CoordEnvelope.MinY, srcRaster.CoordEnvelope.MaxY);
tEnvelope = PrjEnvelope.Intersect(tEnvelope, srcEnvelope);
if (tEnvelope == null || tEnvelope.IsEmpty)
{
continue;
}
Size tSize = tEnvelope.GetSize(srcRaster.ResolutionX, srcRaster.ResolutionY);
int tBeginRow = -1, tEndRow = -1, tBeginCol = -1, tEndCol = -1;
int oBeginRow = -1, oEndRow = -1, oBeginCol = -1, oEndCol = -1;
PrjBlockHelper.ComputeBeginEndRowCol(srcEnvelope, new Size(srcRaster.Width, srcRaster.Height), 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) / srcRaster.ResolutionX + 0.5);
rows[index] = (UInt16)((srcStepLeftTopY - y) / srcRaster.ResolutionY + 0.5);
}
}
});
xs = null;
ys = null;
#endregion
//分块读取不同波段数据
ReadBandData <T>(srcBandData, bandnum, oBeginCol, oBeginRow, srcStepWidth, srcStepHeight, GetSysDataType(ht5type));
//投影不同分块的数据集
_rasterProjector.Project <T>(srcBandData, srcStepSize, rows, cols, outStepSize, dstBandData, fillValue, 0, null);
for (int i = 0; i < outStepSize.Width; i++)
{
for (int j = 0; j < outStepSize.Height; j++)
{
int index = j * outStepSize.Width + i;
data[j + oRow, i] = dstBandData[index];
}
}
rows = null;
rows = null;
srcBandData = null;
dstBandData = null;
}
H5D.write(dsetId, dtypeId, new H5Array <T>(data));
//写数据集属性
//Dictionary<string, string> dsetkeyvalue = ope.GetAttributes(dataset);
//foreach (string key in dsetkeyvalue.Keys)
//{
// string value = dsetkeyvalue[key];
// HDFAttributeDef attrdef = new HDFAttributeDef(key, typeof(string), dsetkeyvalue[key].Length, value);
// WriteHdfAttributes.WriteHdfAttribute(dsetId, attrdef);
//}
H5D.close(dsetId);
}
/// <summary>
/// 投影操作-重载方法
/// </summary>
/// <typeparam name="T">传递的数据集数据类型</typeparam>
/// <param name="srcRaster">原始的数据驱动</param>
/// <param name="prjSettings">投影设置类对象</param>
/// <param name="progressCallback">回调</param>
/// <param name="outhdf5name">导出的hdf5</param>
/// <param name="fillValue">填充值？</param>
private void ProjectRaster(IRasterDataProvider srcRaster, FilePrjSettings prjSettings, Action <int, string> progressCallback, Dictionary <string, H5T.H5Type> dataSets)
{
enumDataType dataType = enumDataType.UInt16;
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.CoordEnvelope.MinX, srcRaster.CoordEnvelope.MaxX, srcRaster.CoordEnvelope.MinY, srcRaster.CoordEnvelope.MaxY);
long mem = MemoryHelper.GetAvalidPhyMemory();
#if !WIN64
mem = mem < 800 * 1024 * 1024 ? mem : 800 * 1024 * 1024;
#endif
long maxLimit = mem / (6 * 8 * 2);
int rowStep = (int)(maxLimit / outWidth);
if (rowStep == 0)
{
rowStep = 1;
}
if (rowStep > outHeight)
{
rowStep = outHeight;
}
int stepCount = (int)(Math.Ceiling((double)outHeight / rowStep));
int progressCount = outBandCount * stepCount + stepCount * 2;
H5FileId fileId = H5F.create(prjSettings.OutPathAndFileName, H5F.CreateMode.ACC_TRUNC);
List <string> listdatasets = new List <string>();
foreach (string name in dataSets.Keys)
{
listdatasets.Add(name);
}
HDF5.Hdf5Operator oper = new HDF5.Hdf5Operator(srcRaster.fileName);
for (int bandnum = 0; bandnum < outBandCount; bandnum++)
{
enumDataType systype = enumDataType.Unknow;
H5T.H5Type h5filetype = dataSets[listdatasets[bandnum]];
systype = GetSysDataType(dataSets[listdatasets[bandnum]]);
switch (systype)
{
case enumDataType.Int16:
RastAndProject <Int16>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.Int32:
RastAndProject <Int32>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.Int64:
RastAndProject <Int64>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.UInt16:
RastAndProject <UInt16>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.UInt32:
RastAndProject <UInt32>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.UInt64:
RastAndProject <UInt64>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.Double:
RastAndProject <Double>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.Float:
RastAndProject <Single>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
case enumDataType.Byte:
RastAndProject <Byte>(outSize, h5filetype, fileId, listdatasets[bandnum], progressCallback, outWidth, outHeight, rowStep, srcRaster, prjSettings, bandnum, 0, oper);
break;
default: break;
}
}
Dictionary <string, string> filekeyvalue = oper.GetAttributes();
foreach (string key in filekeyvalue.Keys)
{
string value = filekeyvalue[key];
HDFAttributeDef attrdef = new HDFAttributeDef(key, typeof(string), filekeyvalue[key].Length, value);
WriteHdfAttributes.WriteHdfAttribute(fileId, attrdef);
}
//写四角坐标信息
HDFAttributeDef lefttopx = new HDFAttributeDef("Left-Top Latitude", typeof(string), prjSettings.OutEnvelope.LeftTop.Y.ToString().Length, prjSettings.OutEnvelope.LeftTop.Y.ToString());
WriteHdfAttributes.WriteHdfAttribute(fileId, lefttopx);
HDFAttributeDef lefttopy = new HDFAttributeDef("Left-Top Longtitude", typeof(string), prjSettings.OutEnvelope.LeftTop.X.ToString().Length, prjSettings.OutEnvelope.LeftTop.X.ToString());
WriteHdfAttributes.WriteHdfAttribute(fileId, lefttopy);
HDFAttributeDef boottomrightx = new HDFAttributeDef("Bottom-Right Latitude", typeof(string), prjSettings.OutEnvelope.RightBottom.Y.ToString().Length, prjSettings.OutEnvelope.RightBottom.Y.ToString());
WriteHdfAttributes.WriteHdfAttribute(fileId, boottomrightx);
HDFAttributeDef boottomrighty = new HDFAttributeDef("Bottom-Right Longtitude", typeof(string), prjSettings.OutEnvelope.RightBottom.X.ToString().Length, prjSettings.OutEnvelope.RightBottom.X.ToString());
WriteHdfAttributes.WriteHdfAttribute(fileId, boottomrighty);
//投影信息
string projtype = "Geopraphic Latitude longtitude";
HDFAttributeDef projecttype = new HDFAttributeDef("Projection Type", typeof(string), projtype.Length, projtype);
WriteHdfAttributes.WriteHdfAttribute(fileId, projecttype);
H5F.close(fileId);
}