public unsafe IExtractResult Do(string productIdentify, string subProductIdentify, IRasterDataProvider dataProvider, string filename, out string error)
{
error = string.Empty;
if (!CanDo(productIdentify, subProductIdentify, filename, out error))
{
return(null);
}
if (_transDef == null)
{
_transDef = (new MVGXMLParser()).GetTransDef();
}
ProductDef product = _transDef.GetProductBySmartProductIdentify(productIdentify);
SubProductDef subProduct = product.GetSubProductBySmartIdentfy(subProductIdentify);
IGeoDataProvider provider = GeoDataDriver.Open(filename, enumDataProviderAccess.ReadOnly, null);
if (provider != null)
{
MvgDataProvider mvgProvider = provider as MvgDataProvider;
if (mvgProvider == null)
{
error = "MVG转换尚不支持文件【" + Path.GetFileName(filename) + "】!";
return(null);
}
float xResolution = dataProvider.ResolutionX, mvgXResolution = (float)mvgProvider.CoordEnvelope.Width / mvgProvider.Width;
float yResolution = dataProvider.ResolutionY, mvgYResolution = (float)mvgProvider.CoordEnvelope.Height / mvgProvider.Height;
int width = dataProvider.Width, mvgWidth = mvgProvider.Width;
double minX = dataProvider.CoordEnvelope.MinX, mvgMinX = mvgProvider.CoordEnvelope.MinX;
double maxY = dataProvider.CoordEnvelope.MaxY, mvgMaxY = mvgProvider.CoordEnvelope.MaxY;
int xIndex = 0;
int yIndex = 0;
if (dataProvider.DataType == enumDataType.UInt16)
{
Int16[] dataBlock = new Int16[mvgProvider.Width * mvgProvider.Height];
fixed(Int16 *buffer = dataBlock)
{
IntPtr ptr = new IntPtr(buffer);
mvgProvider.Read(0, 0, mvgProvider.Width, mvgProvider.Height, ptr, enumDataType.Int16, mvgProvider.Width, mvgProvider.Height, 1, new int[] { 1 }, enumInterleave.BSQ);
}
Dictionary <Int16, Int16> dic = subProduct.GetTableDic <Int16, Int16>();
IPixelIndexMapper map = PixelIndexMapperFactory.CreatePixelIndexMapper(productIdentify + "_" + subProductIdentify, width, dataProvider.Height, dataProvider.CoordEnvelope, dataProvider.SpatialRef);
RasterPixelsVisitor <UInt16> visitor = new RasterPixelsVisitor <UInt16>(new ArgumentProvider(dataProvider, null));
visitor.VisitPixel(new int[] { 1 }, (index, values) =>
{
xIndex = (int)Math.Round((minX + (index % width * xResolution) - mvgMinX) / mvgXResolution);
yIndex = (int)Math.Round((mvgMaxY - (maxY - (index / width * yResolution))) / mvgYResolution);
if (xIndex >= 0 && yIndex >= 0 && yIndex * mvgWidth + xIndex < dataBlock.Length)
{
if (dic.ContainsKey(dataBlock[yIndex * mvgWidth + xIndex]))
{
map.Put(index);
}
}
});
return(map);
}
}
return(null);
}
public bool CanDo(string productIdentify, string subProductIdentify, string filename, out string error)
{
error = string.Empty;
if (string.IsNullOrEmpty(filename) || !File.Exists(filename))
{
error = "待转换文件为空或不存在!";
return(false);
}
if (Path.GetExtension(filename).ToUpper() != ".MVG")
{
error = "待转换文件非MVG文件!";
return(false);
}
if (_transDef == null)
{
_transDef = (new MVGXMLParser()).GetTransDef();
}
if (_transDef == null)
{
error = "MVG转化参数初始化错误!";
return(false);
}
ProductDef product = _transDef.GetProductBySmartProductIdentify(productIdentify);
if (product == null)
{
error = "MVG转换尚不支持【" + productIdentify + "】产品!";
return(false);
}
SubProductDef subProduct = product.GetSubProductBySmartIdentfy(subProductIdentify);
if (subProduct == null)
{
error = "MVG转换尚不支持【" + subProductIdentify + "】子产品!";
return(false);
}
return(true);
}
public ImportFilesObj[] AutoFindFilesByDirver(string productIdentify, string subProIdentify, IRasterDataProvider dataProvider, string dir)
{
if (string.IsNullOrEmpty(dir))
{
return(null);
}
if (_transDef == null)
{
_transDef = (new MVGXMLParser()).GetTransDef();
}
if (_transDef == null)
{
return(null);
}
RasterIdentify rs = new RasterIdentify(dataProvider.fileName);
string searchStr = "*";
if (rs == null)
{
return(null);
}
ProductDef proDef = _transDef.GetProductBySmartProductIdentify(productIdentify);
if (proDef != null && !string.IsNullOrEmpty(proDef.FileIdentify))
{
searchStr += proDef.FileIdentify + "*";
}
SubProductDef subProDef = proDef.GetSubProductBySmartIdentfy(subProIdentify);
if (subProDef != null && !string.IsNullOrEmpty(subProDef.FileIdentify))
{
searchStr += subProDef.FileIdentify + "*";
}
if (!string.IsNullOrEmpty(rs.Satellite))
{
searchStr += rs.Satellite + "*";
}
if (!string.IsNullOrEmpty(rs.Sensor))
{
searchStr += rs.Sensor + "*";
}
if (rs.OrbitDateTime != DateTime.MinValue)
{
searchStr += rs.OrbitDateTime.ToString("yyyyMMddHHmmss") + "*";
}
string[] files = Directory.GetFiles(dir, searchStr + ".mvg", SearchOption.AllDirectories);
if (files == null || files.Length == 0)
{
return(null);
}
string mvgRegion = null;
if (!string.IsNullOrEmpty(rs.RegionIdentify) && files.Length > 1)
{
for (int i = 0; i < files.Length; i++)
{
mvgRegion = GetRegionName(files[i]);
if (string.IsNullOrEmpty(mvgRegion) || rs.RegionIdentify.IndexOf(mvgRegion) == -1)
{
files[i] = string.Empty;
}
}
}
List <ImportFilesObj> importFiles = new List <ImportFilesObj>();
ImportFilesObj obj = null;
foreach (string file in files)
{
if (string.IsNullOrEmpty(file))
{
continue;
}
obj = new ImportFilesObj(productIdentify, subProIdentify, Path.GetFileName(file), Path.GetDirectoryName(file));
importFiles.Add(obj);
}
return(importFiles.Count == 0 ? null : importFiles.ToArray());
}
