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package com.elink.esua.epdc.commons.tools.utils; |
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/** |
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* @program: pingyin-personal |
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* @description: 坐标转换工具 |
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* @author: wangtong |
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* @create: 2022-04-26 11:48 |
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**/ |
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public class CoordinatesUtils { |
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public static double pi = 3.1415926535897932384626; |
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public static double a = 6378245.0; |
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public static double ee = 0.00669342162296594323; |
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/** |
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* * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return |
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* lat:纬度 |
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* lon:经度 |
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* */ |
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public static double[] gcj02_To_Gps84(double lat, double lon) { |
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double[] gps = transform(lat, lon); |
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double lontitude = lon * 2 - gps[1]; |
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double latitude = lat * 2 - gps[0]; |
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return new double[] { latitude, lontitude }; |
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} |
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public static double transformLat(double x, double y) { |
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double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y |
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+ 0.2 * Math.sqrt(Math.abs(x)); |
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ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0; |
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ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0; |
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ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0; |
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return ret; |
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} |
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public static double transformLon(double x, double y) { |
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double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 |
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* Math.sqrt(Math.abs(x)); |
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ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0; |
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ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0; |
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ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0 |
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* pi)) * 2.0 / 3.0; |
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return ret; |
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} |
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public static double[] transform(double lat, double lon) { |
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if (outOfChina(lat, lon)) { |
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return new double[] { lat, lon }; |
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} |
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double dLat = transformLat(lon - 105.0, lat - 35.0); |
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double dLon = transformLon(lon - 105.0, lat - 35.0); |
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double radLat = lat / 180.0 * pi; |
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double magic = Math.sin(radLat); |
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magic = 1 - ee * magic * magic; |
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double sqrtMagic = Math.sqrt(magic); |
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dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi); |
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dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi); |
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double mgLat = lat + dLat; |
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double mgLon = lon + dLon; |
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return new double[] { mgLat, mgLon }; |
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} |
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public static boolean outOfChina(double lat, double lon) { |
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if (lon < 72.004 || lon > 137.8347) |
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return true; |
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if (lat < 0.8293 || lat > 55.8271) |
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return true; |
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return false; |
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} |
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|
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} |
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