QiFeng.ZWY.Utility/CoordinateTransform.cs

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using System;
using System.IO;
using System.Net;
using System.Text;

namespace QiFeng.LMSD.Utility
{
    /// <summary>
    /// 坐标转换
    /// </summary>
    public class CoordinateTransform
    {
        /// <summary>
        /// wg84转百度
        /// </summary>
        /// <param name="longitude">gps经度</param>
        /// <param name="latitude">gps纬度</param>
        /// <returns>百度经纬度</returns>
        public static double[] WG84_BD(double longitude, double latitude)
        {
            //百度坐标转换API from=0是WG84,from=2是谷歌
            string path = "http://api.map.baidu.com/ag/coord/convert?from=0&to=4&x=" + longitude + "&y=" + latitude +
                          "";
            //WebClient请求
            WebClient client = new WebClient();
            Stream str = client.OpenRead(path);
            StreamReader sr = new StreamReader(str);
            string strResult = sr.ReadToEnd();
            str.Close();
            string lon = CutWord(strResult, "\"x\":\"", "\",");
            string lat = CutWord(strResult, "\"y\":\"", "\"}");

            //进行Base64解码
            byte[] xBuffer = Convert.FromBase64String(lon);
            string strX = Encoding.UTF8.GetString(xBuffer, 0, xBuffer.Length);

            byte[] yBuffer = Convert.FromBase64String(lat);
            string strY = Encoding.UTF8.GetString(yBuffer, 0, yBuffer.Length);
            return new double[] {double.Parse(strX), double.Parse(strY)};
        }



        /// <summary>
        /// 百度转WG84
        /// </summary>
        /// <param name="longitude">百度经度</param>
        /// <param name="latitude">百度纬度</param>
        /// <returns>gps经纬度</returns>
        public static double[] BD_WG84(double longitude, double latitude)
        {
            //百度坐标转换API from=0是WG84,from=2是谷歌
            string path = "http://api.map.baidu.com/ag/coord/convert?from=0&to=4&x=" + longitude + "&y=" + latitude +
                          "";
            //WebClient请求
            WebClient client = new WebClient();
            Stream str = client.OpenRead(path);
            StreamReader sr = new StreamReader(str);
            string strResult = sr.ReadToEnd();
            str.Close();