using OSGeo.GDAL;
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using OSGeo.OGR;
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using OSGeo.OSR;
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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.Text;
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using System.Threading.Tasks;
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namespace SimuTools.Tools
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{
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public class GdalHelper
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{
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private static bool isInited;
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private static GdalHelper instance;
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private static readonly object obj = new object();
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public static SpatialReference sr4326 { set; get; }
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public static SpatialReference sr4490 { set; get; }
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/// <summary>
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/// 构造函数
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/// </summary>
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private GdalHelper()
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{
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lock (obj)
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{
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if (!isInited)
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{
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RegisterGDal();
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sr4326 = new SpatialReference(null);
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sr4326.ImportFromEPSG(4326);
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sr4490 = new SpatialReference(null);
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sr4490.ImportFromEPSG(4490);
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isInited = true;
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}
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}
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}
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/// <summary>
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/// 实例
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/// </summary>
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public static GdalHelper Instance
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{
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get
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{
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lock (obj)
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{
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if (null == instance)
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{
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instance = new GdalHelper();
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}
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return instance;
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}
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}
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}
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/// <summary>
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/// 注册GDAL
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/// </summary>
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public void RegisterGDal()
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{
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string gdalData = Path.Combine(Handle.BaseDir, "gdal-data");
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Environment.SetEnvironmentVariable("GDAL_DATA", gdalData);
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string proj7 = Path.Combine(Handle.BaseDir, "proj7\\share");
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Environment.SetEnvironmentVariable("PROJ_LIB", proj7);
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Gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "YES"); // NO,YES
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Gdal.SetConfigOption("SHAPE_ENCODING", ""); // 空,gb2312,CP936
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Ogr.RegisterAll();
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Gdal.AllRegister();
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}
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}
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}
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