| | |
| | | { |
| | | public class Handle |
| | | { |
| | | #region 成员变量 |
| | | public static readonly int MAX = 256 * 256; |
| | | |
| | | public static readonly string GdalPath = ConfigurationManager.AppSettings["gdalPath"]; |
| | | public static readonly double MAX_X_OFFSET = 0.002; |
| | | |
| | | public static readonly double MIN_X_OFFSET = -0.00005; |
| | | |
| | | public static readonly double WaterHeightOffset = 1.0; |
| | | |
| | | public static readonly string BaseDir = AppDomain.CurrentDomain.BaseDirectory; |
| | | |
| | | public static readonly string GdalPath = ConfigurationManager.AppSettings["gdalPath"]; |
| | | #endregion |
| | | |
| | | /// <summary> |
| | | /// 运行 |
| | |
| | | string temp = Path.Combine(outPath, "temp"); |
| | | if (!Directory.Exists(temp)) Directory.CreateDirectory(temp); |
| | | |
| | | CopeTerrain(terrainFile, outPath, layer); |
| | | CopeTerrain(terrainFile, waterPath, outPath, layer); |
| | | CopeWater(waterPath, outPath, layer); |
| | | CopeFlow(flowPath, outPath, layer); |
| | | CopeLayerJson(outPath, layer); |
| | |
| | | /// <summary> |
| | | /// 处理地形 |
| | | /// </summary> |
| | | private static void CopeTerrain(string terrainFile, string outPath, Domain.Layer layer) |
| | | private static void CopeTerrain(string terrainFile, string waterPath, string outPath, Domain.Layer layer) |
| | | { |
| | | Dataset ds = null; |
| | | try |
| | |
| | | if (null == ds || 0 == ds.RasterCount || null == ds.GetSpatialRef()) return; |
| | | |
| | | SetTerrainInfo(ds, layer); |
| | | //CreateTerrainPng(ds, layer, outPath); |
| | | SetWaterInfo(waterPath, layer); |
| | | CreateTerrainPng(ds, layer, outPath); |
| | | } |
| | | finally |
| | | { |
| | |
| | | /// </summary> |
| | | private static void SetTerrainInfo(Dataset ds, Domain.Layer layer) |
| | | { |
| | | //String srsName = ds.GetSpatialRef().GetName(); |
| | | //layer.terrain.epsg = !string.IsNullOrEmpty(srsName) && srsName.Contains(GdalHelper.CGCS2000) ? "EPSG:4490" : "EPSG:4326"; |
| | | |
| | | Geometry minPoint = GdalHelper.GetMinPoint(ds); |
| | | Geometry maxPoint = GdalHelper.GetMaxPoint(ds); |
| | | layer.extension = new Extension(minPoint.GetX(0), minPoint.GetY(0), maxPoint.GetX(0), maxPoint.GetY(0)); |
| | | double minx = GetMinVal(minPoint.GetX(0), 10000000); |
| | | double miny = GetMinVal(minPoint.GetY(0), 10000000); |
| | | double maxx = GetMaxVal(maxPoint.GetX(0) + MAX_X_OFFSET, 10000000); |
| | | double maxy = GetMaxVal(maxPoint.GetY(0), 10000000); |
| | | layer.extension = new Extension(minx, miny, maxx, maxy, double.MaxValue, double.MinValue); |
| | | |
| | | OSGeo.GDAL.Band band = ds.GetRasterBand(1); |
| | | Band band = ds.GetRasterBand(1); |
| | | double[] mm = new double[2]; |
| | | band.ComputeRasterMinMax(mm, 0); |
| | | layer.extension.SetHeight(mm[0], mm[1]); |
| | | layer.terrain.SetHeight(GetMinVal(mm[0]), GetMaxVal(mm[1])); |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 获取最小值 |
| | | /// </summary> |
| | | private static double GetMinVal(double val, double radix = 1000) |
| | | { |
| | | return Convert.ToInt32(Math.Floor(val * radix)) / radix; |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 获取最大值 |
| | | /// </summary> |
| | | private static double GetMaxVal(double val, double radix = 1000) |
| | | { |
| | | return Convert.ToInt32(Math.Ceiling(val * radix)) / radix; |
| | | } |
| | | |
| | | /// <summary> |
| | |
| | | { |
| | | string tif = Path.Combine(tempPath, DateTime.Now.Ticks.ToString() + ".tif"); |
| | | //Resample(ds.GetDescription(), tif, sizes[0], sizes[1]); |
| | | Resample(ds, tif, sizes[0], sizes[1]); |
| | | if (!File.Exists(tif)) |
| | | { |
| | | continue; |
| | | } |
| | | Resample(ds, tif, sizes[0], sizes[1], layer); |
| | | if (!File.Exists(tif)) continue; |
| | | |
| | | string png = Path.Combine(terrainPath, sizes[0] + "_" + sizes[1] + ".png"); |
| | | Tif2Png(layer, tif, png, sizes[0], sizes[1]); |
| | | Terrain2Png(layer, tif, png, sizes[0], sizes[1]); |
| | | } |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 重采样 |
| | | /// </summary> |
| | | private static void Resample(Dataset ds, string dest, int width, int height) |
| | | private static void Resample(Dataset ds, string dest, int width, int height, Domain.Layer layer) |
| | | { |
| | | // https://blog.51cto.com/u_16099346/6691820 |
| | | //string args = string.Format("-t_srs {0} -ts {1} {2} -r {3} -of {4}", "EPSG:4326", width, height, "bilinear", "GTiff"); |
| | | //string[] options = Gdal.ParseCommandLine(args); |
| | | string[] options = new string[] |
| | | { |
| | | "-t_srs", |
| | | "EPSG:4326", |
| | | "-ts", |
| | | width.ToString(), |
| | | height.ToString(), |
| | | "-r", |
| | | "bilinear", |
| | | "-of", |
| | | "GTiff" |
| | | "-t_srs", "EPSG:4326", // layer.terrain.epsg, |
| | | "-ts", width.ToString(), height.ToString(), |
| | | "-te", layer.extension.minx.ToString(), layer.extension.miny.ToString(), layer.extension.maxx.ToString(), layer.extension.maxy.ToString(), |
| | | "-te_srs", "EPSG:4326", // layer.terrain.epsg, |
| | | "-r", "bilinear", |
| | | "-of", "GTiff" |
| | | }; |
| | | GDALWarpAppOptions warpAppOptions = new GDALWarpAppOptions(options); |
| | | |
| | |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 重采样 * |
| | | /// 地形转PNG |
| | | /// </summary> |
| | | private static void Resample(string source, string dest, int width, int height) |
| | | { |
| | | // https://blog.51cto.com/u_16099346/6691820 |
| | | string cmd = string.Format("{0}gdalwarp.exe -t_srs {1} -ts {2} {3} -r {4} -of GTiff \"{5}\" \"{6}\"", GdalPath, "EPSG:4326", width, height, "bilinear", source, dest); |
| | | string err = ExecExe(cmd); |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 执行命令 |
| | | /// </summary> |
| | | public static string ExecExe(string cmd) |
| | | { |
| | | string str = null; |
| | | Process p = null; |
| | | try |
| | | { |
| | | p = new Process(); |
| | | p.StartInfo.FileName = "cmd.exe"; |
| | | p.StartInfo.UseShellExecute = false; |
| | | p.StartInfo.CreateNoWindow = true; |
| | | p.StartInfo.RedirectStandardInput = true; |
| | | p.StartInfo.RedirectStandardOutput = true; |
| | | p.StartInfo.RedirectStandardError = true; |
| | | p.Start(); |
| | | |
| | | StreamWriter si = p.StandardInput; |
| | | StreamReader se = p.StandardError; |
| | | |
| | | si.AutoFlush = true; |
| | | si.WriteLine(cmd); |
| | | si.WriteLine("exit"); |
| | | |
| | | str = se.ReadToEnd(); |
| | | se.Close(); |
| | | si.Close(); |
| | | } |
| | | catch (Exception ex) |
| | | { |
| | | LogOut.Error(ex.Message + "\r\n" + ex.StackTrace); |
| | | str = ex.Message; |
| | | } |
| | | finally |
| | | { |
| | | if (p != null) p.Close(); |
| | | } |
| | | return str; |
| | | } |
| | | |
| | | /// <summary> |
| | | /// Tif值转存至Png |
| | | /// </summary> |
| | | private static void Tif2Png(Domain.Layer layer, string tif, string png, int width, int height, int heightOffset = 0) |
| | | private static void Terrain2Png(Domain.Layer layer, string tif, string png, int width, int height) |
| | | { |
| | | Dataset ds = null; |
| | | try |
| | |
| | | Graphics graphic = Graphics.FromImage(image); |
| | | graphic.Clear(Color.Transparent); // 填充透明色 |
| | | |
| | | double perHeight = (layer.extension.maxHeight - layer.extension.minHeight + heightOffset) * 100 / 65536; |
| | | //double perHeight = (layer.terrain.maxHeight - layer.terrain.minHeight) * 100 / 65536; |
| | | //double differ = layer.terrain.maxHeight - layer.terrain.minHeight; |
| | | double differ = layer.extension.maxHeight - layer.extension.minHeight, minHeight = layer.extension.minHeight; |
| | | for (int x = 0; x < width; x++) |
| | | { |
| | | for (int y = 0; y < height; y++) |
| | | { |
| | | int offset = x + y * width; |
| | | if (float.IsNaN(buffer[offset]) || buffer[offset] < -999) continue; |
| | | if (float.IsNaN(buffer[offset]) || buffer[offset] < -999 || buffer[offset] < minHeight) continue; |
| | | |
| | | //int val = Convert.ToInt32(buffer[offset] * 100); |
| | | int val = Convert.ToInt32((buffer[offset] - layer.extension.minHeight + heightOffset) * 100 / perHeight); |
| | | int r = val / 65536; |
| | | int g = (val - r * 65536) / 256; |
| | | int b = val % 256; |
| | | //int val = Convert.ToInt32((buffer[offset] - layer.terrain.minHeight) * 100 / perHeight); |
| | | //int val = Convert.ToInt32((buffer[offset] - layer.terrain.minHeight) / differ * 255); // 65535 |
| | | |
| | | int r = 0, g, b; |
| | | if (buffer[offset] - layer.extension.maxHeight > 0) |
| | | { |
| | | g = b = 255; |
| | | } |
| | | else |
| | | { |
| | | int val = Convert.ToInt32((buffer[offset] - minHeight) / differ * 65535); |
| | | g = val / 256; |
| | | b = val % 256; |
| | | } |
| | | |
| | | Color color = Color.FromArgb(127, r, g, b); |
| | | image.SetPixel(x, y, color); |
| | |
| | | finally |
| | | { |
| | | if (null != ds) ds.Dispose(); |
| | | if (File.Exists(tif)) File.Delete(tif); |
| | | //if (File.Exists(tif)) File.Delete(tif); |
| | | } |
| | | } |
| | | #endregion |
| | | |
| | | #region 水面 |
| | | /// <summary> |
| | | /// 设置水面信息 |
| | | /// </summary> |
| | | private static void SetWaterInfo(string waterPath, Domain.Layer layer) |
| | | { |
| | | List<string> files = layer.waters.files = GetFiles(waterPath); |
| | | if (null == files || files.Count == 0) return; |
| | | |
| | | SetWaterData(layer, files); |
| | | SetWaterHeight(layer, files); |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 处理水面 |
| | | /// </summary> |
| | | private static void CopeWater(string waterPath, string outPath, Domain.Layer layer) |
| | | { |
| | | List<string> files = GetFiles(waterPath); |
| | | if (null == files || files.Count == 0) return; |
| | | List<String> files = layer.waters.files; |
| | | if (files.Count == 0 || files.Count != layer.waters.data.Count) return; |
| | | |
| | | SetWaterData(layer, files); |
| | | if (files.Count != layer.waters.data.Count) return; |
| | | ProcessWaters(files, outPath, layer); |
| | | } |
| | | |
| | | //ProcessWaters(files, outPath, layer); |
| | | /// <summary> |
| | | /// 获取文件 |
| | | /// </summary> |
| | | private static List<String> GetFiles(string path, string prefix = "") |
| | | { |
| | | string[] files = Directory.GetFiles(path, prefix + "*.tif?", SearchOption.TopDirectoryOnly); |
| | | if (null == files || files.Length == 0) return new List<string>(); |
| | | |
| | | List<string> list = files.ToList(); |
| | | list.Sort(); |
| | | |
| | | return list; |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 设置水面数据 |
| | | /// </summary> |
| | | private static void SetWaterData(Domain.Layer layer, List<string> files) |
| | | { |
| | | DateTime now = DateTime.Now; |
| | | long startTicks = new DateTime(1970, 1, 1, 8, 0, 0).Ticks; |
| | | |
| | | foreach (string file in files) |
| | | { |
| | | string fileName = Path.GetFileNameWithoutExtension(file); |
| | | int hour = Convert.ToInt32(fileName.Substring(0, 2)); |
| | | int minute = Convert.ToInt32(fileName.Substring(2, 2)); |
| | | int second = Convert.ToInt32(fileName.Substring(4, 2)); |
| | | |
| | | DateTime d = new DateTime(now.Year, now.Month, now.Day, hour, minute, second); |
| | | layer.waters.data.Add((d.Ticks - startTicks) / 10000); |
| | | } |
| | | layer.duration.start = layer.waters.data[0]; |
| | | layer.duration.end = layer.waters.data[layer.waters.data.Count - 1]; |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 设置水面高度 |
| | | /// </summary> |
| | | private static void SetWaterHeight(Domain.Layer layer, List<string> files) |
| | | { |
| | | Parallel.For(0, files.Count, i => |
| | | { |
| | | Dataset ds = null; |
| | | try |
| | | { |
| | | ds = Gdal.Open(files[i], Access.GA_ReadOnly); |
| | | if (null == ds || 0 == ds.RasterCount || null == ds.GetSpatialRef()) return; |
| | | |
| | | double[] mm = new double[2]; |
| | | ds.GetRasterBand(1).ComputeRasterMinMax(mm, 0); |
| | | layer.extension.SetHeight(mm[0], mm[1]); |
| | | } |
| | | finally |
| | | { |
| | | if (null != ds) ds.Dispose(); |
| | | } |
| | | }); |
| | | layer.extension.minHeight = GetMinVal(layer.extension.minHeight - 1); |
| | | layer.extension.maxHeight = GetMaxVal(layer.extension.maxHeight + 1); |
| | | } |
| | | |
| | | /// <summary> |
| | |
| | | /// </summary> |
| | | private static void ProcessWaters(List<string> files, string outPath, Domain.Layer layer) |
| | | { |
| | | /*for (int i = 0, c = files.Count; i < c; i++) |
| | | { |
| | | Dataset ds = null; |
| | | try |
| | | { |
| | | ds = Gdal.Open(files[i], Access.GA_ReadOnly); |
| | | if (null == ds || 0 == ds.RasterCount || null == ds.GetSpatialRef()) continue; |
| | | |
| | | CreateWaterPng(ds, layer, outPath, layer.waters.data[i]); |
| | | } |
| | | finally |
| | | { |
| | | if (null != ds) ds.Dispose(); |
| | | } |
| | | }*/ |
| | | Parallel.For(0, files.Count, i => |
| | | //for (int i = 0; i < files.Count; i++) |
| | | { |
| | | Dataset ds = null; |
| | | try |
| | |
| | | { |
| | | string fileName = Path.GetFileNameWithoutExtension(ds.GetDescription()) + "_" + sizes[0] + "_" + sizes[1]; |
| | | string tif = Path.Combine(tempPath, fileName + ".tif"); |
| | | Resample(ds.GetDescription(), tif, sizes[0], sizes[1]); |
| | | if (!File.Exists(tif)) |
| | | { |
| | | continue; |
| | | } |
| | | Resample(ds, tif, sizes[0], sizes[1], layer); |
| | | if (!File.Exists(tif)) continue; |
| | | |
| | | string png = Path.Combine(waterPath, sizes[0] + "_" + sizes[1] + ".png"); |
| | | Tif2Png(layer, tif, png, sizes[0], sizes[1], 1); |
| | | Water2Png(layer, tif, png, sizes[0], sizes[1]); |
| | | } |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 获取文件 |
| | | /// 水面转PNG |
| | | /// </summary> |
| | | private static List<String> GetFiles(string path, string prefix = "") |
| | | private static void Water2Png(Domain.Layer layer, string tif, string png, int width, int height) |
| | | { |
| | | string[] files = Directory.GetFiles(path, prefix + "*.tif?", SearchOption.TopDirectoryOnly); |
| | | if (null == files || files.Length == 0) return null; |
| | | |
| | | List<string> list = files.ToList(); |
| | | list.Sort(); |
| | | |
| | | return list; |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 设置水面数据 |
| | | /// </summary> |
| | | private static void SetWaterData(Domain.Layer layer, List<string> files) |
| | | { |
| | | DateTime now = DateTime.Now; |
| | | long startTicks = new DateTime(1970, 1, 1, 8, 0, 0).Ticks; |
| | | |
| | | foreach (string file in files) |
| | | Dataset ds = null; |
| | | try |
| | | { |
| | | string fileName = Path.GetFileNameWithoutExtension(file); |
| | | int hour = Convert.ToInt32(fileName.Substring(0, 2)); |
| | | int minute = Convert.ToInt32(fileName.Substring(2, 2)); |
| | | int second = Convert.ToInt32(fileName.Substring(4, 2)); |
| | | ds = Gdal.Open(tif, Access.GA_ReadOnly); |
| | | if (null == ds || 0 == ds.RasterCount) return; |
| | | |
| | | DateTime d = new DateTime(now.Year, now.Month, now.Day, hour, minute, second); |
| | | layer.waters.data.Add((d.Ticks - startTicks) / 10000); |
| | | Band band = ds.GetRasterBand(1); |
| | | float[] buffer = new float[width * height]; |
| | | band.ReadRaster(0, 0, width, height, buffer, width, height, 0, 0); |
| | | |
| | | Bitmap image = new Bitmap(width, height); |
| | | Graphics graphic = Graphics.FromImage(image); |
| | | graphic.Clear(Color.Transparent); // 填充透明色 |
| | | |
| | | //double perHeight = (layer.extension.maxHeight - layer.extension.minHeight) * 100 / 65536; |
| | | double differ = layer.extension.maxHeight - layer.extension.minHeight, minHeight = layer.extension.minHeight; |
| | | for (int x = 0; x < width; x++) |
| | | { |
| | | for (int y = 0; y < height; y++) |
| | | { |
| | | int offset = x + y * width; |
| | | if (float.IsNaN(buffer[offset]) || buffer[offset] < -999 || buffer[offset] < minHeight) continue; |
| | | |
| | | //int val = Convert.ToInt32(buffer[offset] * 100); |
| | | //int val = Convert.ToInt32((buffer[offset] - layer.extension.minHeight + WaterHeightOffset) * 100 / perHeight); |
| | | //int r = val / 65536; |
| | | //int g = (val - r * 65536) / 256; |
| | | //int b = val % 256; |
| | | |
| | | int r = 0, g, b; |
| | | if (buffer[offset] - layer.extension.maxHeight > 0) |
| | | { |
| | | g = b = 255; |
| | | } |
| | | else |
| | | { |
| | | int val = Convert.ToInt32((buffer[offset] - minHeight) / differ * 65535); |
| | | g = val / 256; |
| | | b = val % 256; |
| | | } |
| | | |
| | | Color color = Color.FromArgb(127, r, g, b); |
| | | image.SetPixel(x, y, color); |
| | | } |
| | | } |
| | | image.Save(png, System.Drawing.Imaging.ImageFormat.Png); |
| | | } |
| | | finally |
| | | { |
| | | if (null != ds) ds.Dispose(); |
| | | //if (File.Exists(tif)) File.Delete(tif); |
| | | } |
| | | } |
| | | #endregion |
| | |
| | | { |
| | | string vxName = Path.GetFileNameWithoutExtension(vxDs.GetDescription()) + "_" + sizes[0] + "_" + sizes[1]; |
| | | string vxTif = Path.Combine(tempPath, vxName + ".tif"); |
| | | Resample(vxDs.GetDescription(), vxTif, sizes[0], sizes[1]); |
| | | Resample(vxDs, vxTif, sizes[0], sizes[1], layer); |
| | | |
| | | string vyName = Path.GetFileNameWithoutExtension(vyDs.GetDescription()) + "_" + sizes[0] + "_" + sizes[1]; |
| | | string vyTif = Path.Combine(tempPath, vyName + ".tif"); |
| | | Resample(vyDs.GetDescription(), vyTif, sizes[0], sizes[1]); |
| | | Resample(vyDs, vyTif, sizes[0], sizes[1], layer); |
| | | |
| | | if (!File.Exists(vxTif) || !File.Exists(vyTif)) continue; |
| | | |
| | |
| | | vxDs.GetRasterBand(1).ReadRaster(0, 0, width, height, vxBuffer, width, height, 0, 0); |
| | | vyDs.GetRasterBand(1).ReadRaster(0, 0, width, height, vyBuffer, width, height, 0, 0); |
| | | |
| | | //double[] vxMm = new double[2]; |
| | | //vxDs.GetRasterBand(1).ComputeRasterMinMax(vxMm, 0); |
| | | //double[] vyMm = new double[2]; |
| | | //vyDs.GetRasterBand(1).ComputeRasterMinMax(vyMm, 0); |
| | | //double min = vxMm[0] < vyMm[0] ? vxMm[0] : vyMm[0]; |
| | | //double max = vxMm[1] > vyMm[1] ? vxMm[1] : vyMm[1]; |
| | | |
| | | CreateFlowPng(vxBuffer, vyBuffer, png, width, height); |
| | | } |
| | | finally |
| | | { |
| | | if (null != vxDs) vxDs.Dispose(); |
| | | if (null != vyDs) vyDs.Dispose(); |
| | | if (File.Exists(vxTif)) File.Delete(vxTif); |
| | | if (File.Exists(vyTif)) File.Delete(vyTif); |
| | | //if (File.Exists(vxTif)) File.Delete(vxTif); |
| | | //if (File.Exists(vyTif)) File.Delete(vyTif); |
| | | } |
| | | } |
| | | |
| | |
| | | int offset = x + y * width; |
| | | float fx = GetFloatValue(vxBuffer[offset]); |
| | | float fy = GetFloatValue(vyBuffer[offset]); |
| | | if (float.IsNaN(fx) && float.IsNaN(fy) || (fx == 0 && fy == 0)) continue; |
| | | |
| | | double dv = GetXyValue(fx, fy); |
| | | double dx = float.IsNaN(fx) ? 0 : fx * 0.5 + 0.5; |
| | | double dy = float.IsNaN(fy) ? 0 : fy * 0.5 + 0.5; |
| | | fx = float.IsNaN(fx) ? 0 : fx; |
| | | fy = float.IsNaN(fy) ? 0 : fy; |
| | | double dr = Math.Sqrt(Math.Pow(fx, 2) + Math.Pow(fy, 2)); |
| | | |
| | | int r = Convert.ToInt32(dv * 255); |
| | | if (r > 255) r = 255; |
| | | int g = Convert.ToInt32(dx * 255); |
| | | int b = Convert.ToInt32(dy * 255); |
| | | int r = Convert.ToInt32(dr / 4 * 255); |
| | | int g = Convert.ToInt32((fx / dr * 0.5 + 0.5) * 255); |
| | | int b = Convert.ToInt32((fy / dr * 0.5 + 0.5) * 255); |
| | | |
| | | Color color = Color.FromArgb(127, r, g, b); |
| | | Color color = Color.FromArgb(127, GetSafeValue(r), GetSafeValue(g), GetSafeValue(b)); |
| | | image.SetPixel(x, y, color); |
| | | } |
| | | } |
| | |
| | | /// </summary> |
| | | private static float GetFloatValue(float val) |
| | | { |
| | | //return (float.IsNaN(val) || val < -999) ? float.NaN : val; |
| | | if (float.IsNaN(val) || val < -999) return float.NaN; |
| | | if (val > 1) return 1; |
| | | if (val < -1) return -1; |
| | | |
| | | return val; |
| | | return (float.IsNaN(val) || val < -999) ? float.NaN : val; |
| | | } |
| | | |
| | | private static double GetXyValue(float fx, float fy) |
| | | /// <summary> |
| | | /// 获取安全值 |
| | | /// </summary> |
| | | private static int GetSafeValue(int val) |
| | | { |
| | | if (float.IsNaN(fx) && float.IsNaN(fy)) |
| | | { |
| | | return 0; |
| | | } |
| | | if (float.IsNaN(fx)) |
| | | { |
| | | return Math.Abs(fy); |
| | | } |
| | | if (float.IsNaN(fy)) |
| | | { |
| | | return Math.Abs(fx); |
| | | } |
| | | if (val < 0) return 0; |
| | | if (val > 255) return 255; |
| | | |
| | | return Math.Sqrt(Math.Pow(fx, 2) + Math.Pow(fy, 2)); |
| | | return val; |
| | | } |
| | | #endregion |
| | | |
| | |
| | | } |
| | | } |
| | | #endregion |
| | | |
| | | #region 暂时不用 |
| | | /// <summary> |
| | | /// 设置地形信息 |
| | | /// </summary> |
| | | private static void SetTerrainInfo(Dataset ds, string outPath, Domain.Layer layer) |
| | | { |
| | | string tempPath = Path.Combine(outPath, "temp"); |
| | | if (!Directory.Exists(tempPath)) Directory.CreateDirectory(tempPath); |
| | | |
| | | string tif = Path.Combine(tempPath, Path.GetFileNameWithoutExtension(ds.GetDescription()) + ".tif"); |
| | | Resample(ds, tif); |
| | | if (!File.Exists(tif)) throw new Exception("高程文件重投影失败!"); |
| | | |
| | | Dataset tifDS = null; |
| | | try |
| | | { |
| | | tifDS = Gdal.Open(tif, Access.GA_ReadOnly); |
| | | if (null == tifDS || 0 == tifDS.RasterCount || null == tifDS.GetSpatialRef()) return; |
| | | |
| | | double[] transform = new double[6]; |
| | | tifDS.GetGeoTransform(transform); |
| | | double minx = transform[0]; |
| | | double miny = transform[3] - tifDS.RasterYSize * transform[1]; |
| | | double maxx = transform[0] + (tifDS.RasterYSize * transform[1]); |
| | | double maxy = transform[3]; |
| | | |
| | | layer.extension = new Extension(minx, miny, maxx, maxy, double.MaxValue, double.MinValue); |
| | | |
| | | Band band = tifDS.GetRasterBand(1); |
| | | double[] mm = new double[2]; |
| | | band.ComputeRasterMinMax(mm, 0); |
| | | layer.terrain.SetHeight(GetMinVal(mm[0]), GetMaxVal(mm[1])); |
| | | } |
| | | finally |
| | | { |
| | | if (null != tifDS) tifDS.Dispose(); |
| | | } |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 重采样 |
| | | /// </summary> |
| | | private static void Resample(Dataset ds, string dest) |
| | | { |
| | | string[] options = new string[] { "-t_srs", "EPSG:4326", "-r", "bilinear", "-of", "GTiff" }; |
| | | GDALWarpAppOptions warpAppOptions = new GDALWarpAppOptions(options); |
| | | |
| | | Dataset destDs = Gdal.Warp(dest, new Dataset[] { ds }, warpAppOptions, null, null); |
| | | destDs.Dispose(); |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 重采样 |
| | | /// </summary> |
| | | private static void Resample(string source, string dest, int width, int height) |
| | | { |
| | | // https://blog.51cto.com/u_16099346/6691820 |
| | | string cmd = string.Format("{0}gdalwarp.exe -t_srs {1} -ts {2} {3} -r {4} -of GTiff \"{5}\" \"{6}\"", GdalPath, "EPSG:4326", width, height, "bilinear", source, dest); |
| | | string err = ExecExe(cmd); |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 执行命令 |
| | | /// </summary> |
| | | public static string ExecExe(string cmd) |
| | | { |
| | | string str = null; |
| | | Process p = null; |
| | | try |
| | | { |
| | | p = new Process(); |
| | | p.StartInfo.FileName = "cmd.exe"; |
| | | p.StartInfo.UseShellExecute = false; |
| | | p.StartInfo.CreateNoWindow = true; |
| | | p.StartInfo.RedirectStandardInput = true; |
| | | p.StartInfo.RedirectStandardOutput = true; |
| | | p.StartInfo.RedirectStandardError = true; |
| | | p.Start(); |
| | | |
| | | StreamWriter si = p.StandardInput; |
| | | StreamReader se = p.StandardError; |
| | | |
| | | si.AutoFlush = true; |
| | | si.WriteLine(cmd); |
| | | si.WriteLine("exit"); |
| | | |
| | | str = se.ReadToEnd(); |
| | | se.Close(); |
| | | si.Close(); |
| | | } |
| | | catch (Exception ex) |
| | | { |
| | | LogOut.Error(ex.Message + "\r\n" + ex.StackTrace); |
| | | str = ex.Message; |
| | | } |
| | | finally |
| | | { |
| | | if (p != null) p.Close(); |
| | | } |
| | | return str; |
| | | } |
| | | #endregion |
| | | } |
| | | } |