using ExportMap.db;
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using ExportMap.Models;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Web;
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namespace ExportMap.cs
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{
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public class PyLasUtils
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{
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/// <summary>
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/// 获取路径
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/// </summary>
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public static string GetPath(int id)
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{
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return Path.Combine(SGUtils.LFData, "3d\\3dtiles\\las", id.ToString());
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}
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/// <summary>
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/// 获取发布地址
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/// </summary>
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public static string GetReleaseUrl(string path)
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{
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return "http://{host}/LFData/" + path.Replace("\\", "/");
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}
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/// <summary>
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/// 生成
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/// </summary>
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/// <param name="args">XYZ参数</param>
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/// <param name="err">错误信息</param>
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/// <returns>数据发布ID集合</returns>
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public static List<int> Generate(XYZArgs args, ref string err)
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{
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try
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{
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List<SysMeta> list = XYZUtils.SelectMetas(args.ids, "and type in ('las', 'laz')");
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if (null == list || list.Count == 0) return null;
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string pyPath = Tools.GetSetting("pythonFolder");
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string uploadFolder = Tools.GetSetting("uploadFolder");
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List<int> ids = new List<int>();
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foreach (SysMeta meta in list)
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{
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string lasPath = Path.Combine(uploadFolder, meta.path);
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if (!File.Exists(lasPath)) continue;
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string outPath = GetPath(meta.id);
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if (Directory.Exists(outPath)) Tools.DelPath(outPath);
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if (!Directory.Exists(outPath)) Directory.CreateDirectory(outPath);
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//int idx = args.ids.IndexOf(meta.id); // args.srids[idx], args.zs[idx])
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List<string> cmds = new List<string>();
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cmds.Add(string.Format("set PYTHONHOME={0}", pyPath));
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cmds.Add(string.Format("{0}\\Scripts\\py3dtiles.exe convert --overwrite {1} --out {2}", pyPath, lasPath, outPath));
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SysTask task = TaskDBHelper.CreateTask(args, meta, "LAS", "点云数据(LAS)");
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err = Tools.ExecCmd(task, cmds, false);
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err = null;
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string jsonFile = Path.Combine(outPath, "tileset.json");
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if (File.Exists(jsonFile))
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{
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string path = jsonFile.Replace(Tools.GetSetting("lfData") + "\\", "");
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int pubid = InsertToDB(meta, args, path);
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if (pubid > 0) ids.Add(pubid);
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}
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}
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return ids;
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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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err = ex.Message;
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return null;
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}
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}
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/// <summary>
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/// 插入数据库
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/// </summary>
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private static int InsertToDB(SysMeta meta, XYZArgs args, string path)
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{
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//if (PubDBHelper.IsPublish(meta.id)) return 1;
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int pubid = PubDBHelper.GetPushlishId(meta.id);
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if (pubid > 0)
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{
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PubDBHelper.UpdatePublish(pubid, meta.name, args.userId, null);
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return pubid;
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}
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SysPublish sys = Tools.NewPublish(meta, args, GetReleaseUrl(path), path);
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sys.json = GetLasGeomJSON(Path.Combine(Tools.GetSetting("uploadFolder"), meta.path), meta.id);
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pubid = PubDBHelper.InsertPublish(sys);
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if (pubid > 0)
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{
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sys.id = pubid;
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PubDBHelper.InsertLayer(sys, meta);
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PubDBHelper.InsertMetaPub(meta.id, pubid, args.userId);
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}
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return pubid;
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}
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/// <summary>
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/// 坐标转换 *
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/// </summary>
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public static void CsTransform(string epsg, double x, double y, double z = 0)
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{
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List<string> cmds = new List<string>();
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string gdalPath = Tools.GetSetting("gdalPath");
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cmds.Add(string.Format("\"{0}\\gdaltransform.exe\" -s_srs EPSG:{1} -t_srs EPSG:4326", gdalPath, epsg.Replace("EPSG:", "")));
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cmds.Add(string.Format("echo {0} {1} {2}", x, y, z));
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string rs = null;
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string str = Tools.ExecCmd(cmds, ref rs);
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//return rs;
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}
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/// <summary>
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/// 获取las坐标JSON
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/// </summary>
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public static string GetLasGeomJSON(string lasFile, int id)
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{
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try
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{
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string cmd = string.Format("\"{0}\\lasinfo.exe\" \"{1}\"", Tools.GetSetting("tilerPath"), lasFile);
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string rs = Tools.ExecCmd(new List<string> { cmd });
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if (string.IsNullOrEmpty(rs)) return null;
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string[] strs = rs.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
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string epsg = GetEpsgFromStrs(strs);
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string minStr = GetCoordFromStrs(strs, "min x y z:");
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string maxStr = GetCoordFromStrs(strs, "max x y z:");
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string scaleStr = GetCoordFromStrs(strs, "scale factor x y z:");
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if (string.IsNullOrEmpty(epsg) || string.IsNullOrEmpty(minStr) || string.IsNullOrEmpty(maxStr) || string.IsNullOrEmpty(scaleStr)) return null;
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string[] minXYZ = minStr.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
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string[] maxXYZ = maxStr.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
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string[] scales = scaleStr.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
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double minX = double.Parse(minXYZ[0]), minY = double.Parse(minXYZ[1]), minZ = double.Parse(minXYZ[2]);
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double maxX = double.Parse(maxXYZ[0]), maxY = double.Parse(maxXYZ[1]), maxZ = double.Parse(maxXYZ[2]);
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double x = (minX + maxX) / 2, y = (minY + maxY) / 2, z = maxZ, scale = Math.Round(1 / double.Parse(scales[0]), 2) / 10;
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string url = ExportUtil.LFServer + "/publish/selectCsTransform?token=" + Tools.Token + "&x=" + x + "&y=" + y + "&epsg=" + epsg;
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rs = ExportUtil.GetData(url);
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if (string.IsNullOrEmpty(rs)) return null;
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strs = rs.Replace("\"", "").Split(new string[] { "," }, StringSplitOptions.None);
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x = double.Parse(strs[0]);
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y = double.Parse(strs[1]);
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return string.Format("{{\"lon\":{0},\"lat\":{1},\"height\":{2},\"yaw\":0,\"alpha\":1,\"modelid\":\"DbId\",\"scale\":{3},\"lasId\":{4}}}", x, y, z, scale, id);
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}
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catch (Exception ex)
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{
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LogOut.Error(ex.StackTrace);
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return null;
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}
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}
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/// <summary>
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/// 从字符串数组中获取EPSG
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/// </summary>
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private static string GetEpsgFromStrs(string[] strs)
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{
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foreach (string str in strs)
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{
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if (str.Contains("key 3072 "))
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{
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int start = str.IndexOf("value_offset") + 12;
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int end = str.IndexOf("-", start);
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return str.Substring(start, end - start).Replace(" ", "");
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}
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}
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return null;
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}
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/// <summary>
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/// 从字符串数组中获取坐标
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/// </summary>
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private static string GetCoordFromStrs(string[] strs, string key)
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{
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foreach (string str in strs)
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{
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if (str.Contains(key))
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{
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return str.Replace(key, "");
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}
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}
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return null;
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}
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}
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}
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