using Newtonsoft.Json;
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using OSGeo.GDAL;
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using OSGeo.OGR;
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using SimuTools.Domain;
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Data;
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using System.Diagnostics;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Text;
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namespace SimuTools.Tools
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{
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public class Handle
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{
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public static readonly int MAX = 256 * 256;
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public static readonly string GdalPath = ConfigurationManager.AppSettings["gdalPath"];
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public static readonly string BaseDir = AppDomain.CurrentDomain.BaseDirectory;
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/// <summary>
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/// 运行
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/// </summary>
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public static void Run(string terrainFile, string waterPath, string flowPath, string outPath)
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{
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Domain.Layer layer = new Domain.Layer();
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layer.duration = new Duration();
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layer.terrain = new Terrain();
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layer.waters = new Water();
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string temp = Path.Combine(outPath, "temp");
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if (!Directory.Exists(temp)) Directory.CreateDirectory(temp);
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//CopeTerrain(terrainFile, outPath, layer);
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CopeWater(waterPath, outPath, layer);
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CopeFlow(flowPath, outPath, layer);
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CopeLayerJson(outPath, layer);
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//if (Directory.Exists(temp)) Directory.Delete(temp, true);
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}
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/// <summary>
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/// 处理地形
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/// </summary>
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private static void CopeTerrain(string terrainFile, string outPath, Domain.Layer layer)
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{
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Dataset ds = null;
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try
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{
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ds = Gdal.Open(terrainFile, Access.GA_ReadOnly);
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if (null == ds || 0 == ds.RasterCount || null == ds.GetSpatialRef()) return;
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SetTerrainInfo(ds, layer);
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CreateTerrainPng(ds, layer, outPath);
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}
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finally
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{
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if (null != ds) ds.Dispose();
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}
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}
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/// <summary>
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/// 设置地形信息
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/// </summary>
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private static void SetTerrainInfo(Dataset ds, Domain.Layer layer)
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{
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Geometry minPoint = GdalHelper.GetMinPoint(ds);
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Geometry maxPoint = GdalHelper.GetMaxPoint(ds);
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layer.extension = new Extension(minPoint.GetX(0), minPoint.GetY(0), maxPoint.GetX(0), maxPoint.GetY(0));
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OSGeo.GDAL.Band band = ds.GetRasterBand(1);
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double[] mm = new double[2];
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band.ComputeRasterMinMax(mm, 0);
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layer.extension.SetHeight(mm[0], mm[1]);
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}
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/// <summary>
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/// 创建地形图层
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/// </summary>
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private static void CreateTerrainPng(Dataset ds, Domain.Layer layer, string outPath)
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{
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string tempPath = Path.Combine(outPath, "temp");
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if (!Directory.Exists(tempPath)) Directory.CreateDirectory(tempPath);
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string terrainPath = Path.Combine(outPath, "terrain");
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if (!Directory.Exists(terrainPath)) Directory.CreateDirectory(terrainPath);
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foreach (int[] sizes in layer.terrain.size)
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{
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//string filePath = Path.Combine(outPath, sizes[0] + "_" + sizes[1] + ".png");
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//// 填充内存图像
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//byte[] buffer = new byte[sizes[0] * sizes[1] * 3];
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//for (int i = 0; i < buffer.Length; i++)
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//{
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// buffer[i] = (byte)(i % 256);
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//}
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string tif = Path.Combine(tempPath, DateTime.Now.Ticks.ToString() + ".tif");
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Resample(ds.GetDescription(), tif, sizes[0], sizes[1]);
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if (!File.Exists(tif))
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{
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continue;
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}
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string png = Path.Combine(terrainPath, sizes[0] + "_" + sizes[1] + ".png");
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Terrain2Png(layer, tif, png, sizes[0], sizes[1]);
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}
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}
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/// <summary>
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/// 重采样
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/// </summary>
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private static void Resample(string source, string dest, int width, int height)
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{
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// https://blog.51cto.com/u_16099346/6691820
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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);
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string err = ExecExe(cmd);
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}
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/// <summary>
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/// 执行命令
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/// </summary>
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public static string ExecExe(string cmd)
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{
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string str = null;
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Process p = null;
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try
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{
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p = new Process();
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p.StartInfo.FileName = "cmd.exe";
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p.StartInfo.UseShellExecute = false;
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p.StartInfo.CreateNoWindow = true;
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p.StartInfo.RedirectStandardInput = true;
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p.StartInfo.RedirectStandardOutput = true;
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p.StartInfo.RedirectStandardError = true;
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p.Start();
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StreamWriter si = p.StandardInput;
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StreamReader se = p.StandardError;
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si.AutoFlush = true;
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si.WriteLine(cmd);
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si.WriteLine("exit");
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str = se.ReadToEnd();
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se.Close();
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si.Close();
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}
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catch (Exception ex)
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{
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LogOut.Error(ex.Message + "\r\n" + ex.StackTrace);
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str = ex.Message;
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}
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finally
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{
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if (p != null) p.Close();
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}
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return str;
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}
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/// <summary>
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/// Tif值转存至Png
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/// </summary>
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private static void Terrain2Png(Domain.Layer layer, string tif, string png, int width, int height)
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{
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Dataset ds = null;
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try
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{
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ds = Gdal.Open(tif, Access.GA_ReadOnly);
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if (null == ds || 0 == ds.RasterCount) return;
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OSGeo.GDAL.Band band = ds.GetRasterBand(1);
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float[] buffer = new float[width * height];
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band.ReadRaster(0, 0, width, height, buffer, width, height, 0, 0);
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Bitmap image = new Bitmap(width, height);
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//Graphics graphic = Graphics.FromImage(image);
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//graphic.Clear(Color.Transparent); // 填充透明色
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double perHeight = (layer.extension.maxHeight - layer.extension.minHeight) * 100 / 65536;
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for (int x = 0; x < width; x++)
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{
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for (int y = 0; y < height; y++)
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{
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if (buffer[x * y] == double.NaN || buffer[x * y] == -9999)
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{
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image.SetPixel(x, y, Color.Transparent);
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continue;
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}
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//int val = Convert.ToInt32(buffer[x * y]* 100); //Convert.ToInt32((buffer[x * y] - layer.extension.minHeight) * 100);
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int val = Convert.ToInt32((buffer[x * y] - layer.extension.minHeight) * 100 / perHeight);
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int r = val / 65536;
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int g = (val - r * 65536) / 256;
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int b = val % 256;
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Color color = Color.FromArgb(0, r, g, b);
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image.SetPixel(x, y, color);
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}
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}
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image.Save(png, System.Drawing.Imaging.ImageFormat.Png);
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}
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finally
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{
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if (null != ds) ds.Dispose();
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}
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}
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/// <summary>
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/// 处理水面
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/// </summary>
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private static void CopeWater(string waterPath, string outPath, Domain.Layer layer)
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{
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string watersPath = Path.Combine(outPath, "waters");
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if (!Directory.Exists(watersPath)) Directory.CreateDirectory(watersPath);
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List<string> files = GetFiles(waterPath);
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if (null == files || files.Count == 0) return;
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SetWaterData(layer, files);
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}
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/// <summary>
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/// 获取文件
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/// </summary>
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private static List<String> GetFiles(string path)
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{
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string[] files = Directory.GetFiles(path, "*.tif?", SearchOption.TopDirectoryOnly);
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if (null == files || files.Length == 0) return null;
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List<string> list = files.ToList();
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list.Sort();
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return list;
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}
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/// <summary>
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/// 设置水面数据
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/// </summary>
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private static void SetWaterData(Domain.Layer layer, List<string> files)
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{
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DateTime now = DateTime.Now;
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long startTicks = new DateTime(1970, 1, 1, 0, 0, 0).Ticks;
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foreach (string file in files)
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{
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string fileName = Path.GetFileNameWithoutExtension(file);
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int hour = Convert.ToInt32(fileName.Substring(0, 2));
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int minute = Convert.ToInt32(fileName.Substring(2, 2));
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int second = Convert.ToInt32(fileName.Substring(4, 2));
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DateTime d = new DateTime(now.Year, now.Month, now.Day, hour, minute, second);
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layer.waters.data.Add((d.Ticks - startTicks) / 10000);
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}
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}
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/// <summary>
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/// 处理流速流向
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/// </summary>
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private static void CopeFlow(string flowPath, string outPath, Domain.Layer layer)
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{
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}
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/// <summary>
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/// 处理元数据
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/// </summary>
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private static void CopeLayerJson(string outPath, Domain.Layer layer)
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{
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if (null == layer) return;
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String json = JsonConvert.SerializeObject(layer);
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string filePath = Path.Combine(outPath, "layer.json");
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using (StreamWriter sw = new StreamWriter(filePath))
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{
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sw.Write(json);
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}
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}
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#region 暂时不用
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/// <summary>
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/// 重采样 *
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/// </summary>
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private static void Resample(Dataset ds, string dest, int width, int height)
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{
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// 设置Warp的选项：https://blog.csdn.net/qq_43210879/article/details/121350561
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string[] options = new string[] {
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"format=GTiff",
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"width=" + width,
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"height=" + height,
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"dstSRS=EPSG:4326"
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};
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OSGeo.GDAL.Driver driver = Gdal.GetDriverByName("GTiff");
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Dataset destDs = driver.Create(dest, width, height, ds.RasterCount, ds.GetRasterBand(1).DataType, null);
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GDALWarpAppOptions warpAppOptions = new GDALWarpAppOptions(options);
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Gdal.Warp(destDs, new Dataset[] { ds }, warpAppOptions, null, null);
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destDs.Dispose();
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}
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#endregion
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}
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}
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