package com.moral.util;
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import com.moral.service.impl.DeviceServiceImpl;
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import org.apache.log4j.Logger;
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import java.util.ArrayList;
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import java.util.List;
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public class LatLngTransformation {
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private static final double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
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private static Logger log = Logger.getLogger(LatLngTransformation.class);
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/// <summary>
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/// 中国正常坐标系 GCJ02 协议的坐标,转到百度地图对应的 BD09 协议坐标
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/// </summary>
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/// <param name="lat">维度</param>
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/// <param name="lng">经度</param>
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public static List Convert_GCJ02_To_BD09(double lat, double lng)
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{
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List list=new ArrayList();
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double x = lng, y = lat;
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double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
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double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);
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lng = z * Math.cos(theta) + 0.0065;
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lat = z * Math.sin(theta) + 0.006;
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list.add(lng);
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list.add(lat);
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return list;
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}
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/// <summary>
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/// 百度地图对应的 BD09 协议坐标,转到 中国正常坐标系 GCJ02 协议的坐标
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/// </summary>
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/// <param name="lat">维度</param>
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/// <param name="lng">经度</param>
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public static List Convert_BD09_To_GCJ02(double lat,double lng)
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{
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List list=new ArrayList();
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double x = lng - 0.0065, y = lat - 0.006;
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double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi);
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double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi);
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lng = z * Math.cos(theta);
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lat = z * Math.sin(theta);
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list.add(lng);
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list.add(lat);
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return list;
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}
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}
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