/// <summary>
/// 写入地理坐标系切片
/// </summary>
/// <param name="tileFileInfo"></param>
/// <param name="outPutDir"></param>
/// <param name="minL"></param>
/// <param name="maxL"></param>
/// <param name="progress"></param>
/// <param name="threadsCount"></param>
/// <returns></returns>
public static async Task GenerateGeoGoordinateSystemTiles(TileFileInfo tileFileInfo, string outPutDir, int minL, int maxL, IProgress <double> progress, int threadsCount)
{
using (SemaphoreSlim semaphoreSlim = new SemaphoreSlim(threadsCount))
{
List <Task> tasks = new List <Task>();
for (int i = minL; i < maxL; i++)
{
await semaphoreSlim.WaitAsync().ConfigureAwait(false);
try
{
WriteGeoLevel(i, tileFileInfo, outPutDir);
}
finally { semaphoreSlim.Release(); }
}
await Task.WhenAll(tasks).ConfigureAwait(false);
foreach (Task task in tasks)
{
task.Dispose();
}
}
}
public static async ValueTask <TileFileInfo> GetTileFileInfo(FileInfo fileInfo)
{
CheckHelper.CheckFile(fileInfo, true);
TileFileInfo tileFileInfo = null;
await Task.Run(() =>
{
IWorkspaceFactory workspaceFactory = new ShapefileWorkspaceFactory();
IWorkspace pWs = workspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(fileInfo.FullName), 0);
IFeatureClass pFeatureClass = (pWs as IFeatureWorkspace).OpenFeatureClass(System.IO.Path.GetFileNameWithoutExtension(fileInfo.FullName));
IGeoDataset pGeoDataset = pFeatureClass as IGeoDataset;
double XMin = pGeoDataset.Extent.XMin;
double YMin = pGeoDataset.Extent.YMin;
double XMax = pGeoDataset.Extent.XMax;
double YMax = pGeoDataset.Extent.YMax;
Enums.EnumSpatialType enumSpatialType = Enums.EnumSpatialType.ShpFile;
ISpatialReference spatialReference = pGeoDataset.SpatialReference;
Enums.SpatialReferenceType SpatialReference = Enums.SpatialReferenceType.None;
if (spatialReference is IGeographicCoordinateSystem)
{
SpatialReference = Enums.SpatialReferenceType.GeoCoordinateSystem;
}
else if (spatialReference is IProjectedCoordinateSystem)
{
SpatialReference = Enums.SpatialReferenceType.ProjCoordinateSystem;
}
else
{
SpatialReference = Enums.SpatialReferenceType.None;
}
switch (fileInfo.Extension)
{
case ".shp":
enumSpatialType = Enums.EnumSpatialType.ShpFile;
break;
case "img":
enumSpatialType = Enums.EnumSpatialType.img;
break;
case "tif":
enumSpatialType = Enums.EnumSpatialType.tif;
break;
default:
break;
}
tileFileInfo = new TileFileInfo()
{
filePath = fileInfo.FullName,
fileSize = 0,
SpatialType = enumSpatialType,
MinX = XMin,
MinY = YMin,
MaxX = XMax,
MaxY = YMax,
SpatialReferenceType = SpatialReference
};
AGSTile.RealeaseAO(workspaceFactory);
AGSTile.RealeaseAO(pWs);
AGSTile.RealeaseAO(workspaceFactory);
AGSTile.RealeaseAO(pFeatureClass);
AGSTile.RealeaseAO(pGeoDataset);
}).ConfigureAwait(false);
return(tileFileInfo);
}
/// <summary>
/// 写入当前切片级别地理坐标系切片
/// </summary>
/// <param name="i"></param>
/// <param name="tileFileInfo"></param>
/// <param name="outPutDir"></param>
public static void WriteGeoLevel(int i, TileFileInfo tileFileInfo, string outPutDir)
{
IWorkspaceFactory workspaceFactory = new ShapefileWorkspaceFactory();
IWorkspace pWs = workspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(tileFileInfo.filePath), 0);
IFeatureClass pFeatureClass = (pWs as IFeatureWorkspace).OpenFeatureClass(System.IO.Path.GetFileNameWithoutExtension(tileFileInfo.filePath));
IFeatureLayer featureLayer = new FeatureLayerClass
{
FeatureClass = pFeatureClass
};
IDataset dataSet = (IDataset)pFeatureClass;
featureLayer.Name = dataSet.Name;
IMap map = new MapClass();
map.AddLayer(featureLayer);
IMapControlDefault pMapControl = new MapControlClass();
pMapControl.Map = map;
IActiveView pActiveView = pMapControl.ActiveView;
tagRECT rect = new tagRECT();
rect.left = rect.top = 0;
rect.right = 256;
rect.bottom = 256;
IExport pExport = null;
IEnvelope pEnvelope = new EnvelopeClass();
string temp = i.ToString();
if (temp.Length < 2)
{
temp = "0" + temp;
}
System.IO.DirectoryInfo LevelDir = new System.IO.DirectoryInfo(outPutDir).CreateSubdirectory($"L{temp}");
pMapControl.MapScale = TileParam.TileParamProjCoordinateSystem.TileScales[i];
pMapControl.Refresh();
Console.WriteLine($"Level：L{temp}：分辨率{TileParam.TileParamGeoCoordinateSystem.TileResolutions[i]}");
double imageHeighy = TileParam.TileParamGeoCoordinateSystem.TileResolutions[i] * TileParam.TileParamGeoCoordinateSystem.TileSize;
for (int dy = 1, iRnum = 0; TileParam.TileOriginGeo.OriginY - imageHeighy * dy > tileFileInfo.MinY - imageHeighy; dy++, iRnum++)
{
if (TileParam.TileOriginGeo.OriginY - imageHeighy * dy > tileFileInfo.MaxY)
{
continue;
}
string tmpy = iRnum.ToString("X");
while (tmpy.Length < 8)
{
tmpy = "0" + tmpy;
}
Console.WriteLine($"--行号：R{tmpy}");
System.IO.DirectoryInfo RowDir = LevelDir.CreateSubdirectory($"R{tmpy}");
for (int dx = 1, iCnum = 0; TileParam.TileOriginGeo.OriginX + imageHeighy * dx < tileFileInfo.MaxX + imageHeighy; dx++, iCnum++)
{
if (TileParam.TileOriginGeo.OriginX + imageHeighy * dx < tileFileInfo.MinX)
{
continue;
}
string tmpx = iCnum.ToString("X");
while (tmpx.Length < 8)
{
tmpx = "0" + tmpx;
}
try
{
pEnvelope.PutCoords(TileParam.TileOriginGeo.OriginX + imageHeighy * (dx - 1), TileParam.TileOriginGeo.OriginY - imageHeighy * dy, TileParam.TileOriginGeo.OriginX + imageHeighy * dx, TileParam.TileOriginGeo.OriginY - imageHeighy * (dy - 1));
pExport = ToExporter("PNG");
pExport.ExportFileName = RowDir.FullName + "\\C" + tmpx + ".png";
Console.WriteLine($"----列号：C{tmpx} {pExport.ExportFileName}");
pExport.Resolution = 96;
IEnvelope pPixelBoundsEnv = new EnvelopeClass();
pPixelBoundsEnv.PutCoords(rect.left, rect.top, rect.right, rect.bottom);
pExport.PixelBounds = pPixelBoundsEnv;
//开始导出，获取DC
int hDC = pExport.StartExporting();
//导出
pActiveView.Output(hDC, 96, ref rect, pEnvelope, null);
//结束导出
pExport.FinishExporting();
//清理导出类
pExport.Cleanup();
RealeaseAO(pExport);
RealeaseAO(pPixelBoundsEnv);
}
catch (Exception ex) { Helpers.ErrorHelper.PrintException(ex); }
}
}
RealeaseAO(workspaceFactory);
RealeaseAO(pWs);
RealeaseAO(pFeatureClass);
RealeaseAO(featureLayer);
RealeaseAO(map);
RealeaseAO(pMapControl);
}
