package com.scpyun.platform.jilinsscgsdp.utils;
/**
 *
 * @Title:  LngLonUtil
 * @Package LngLonUtil.java
 * @Description: copy By scp-grid
 * @author:  guojiucoder
 * @date:   2024/7/31 14:10
 * @version V1.0.0
 *
 */

public class LngLonUtil {

    public static double pi = 3.1415926535897932384626;

    public static double x_pi = 3.14159265358979324 * 3000.0 / 180.0;

    public static double a = 6378245.0;

    public static double ee = 0.00669342162296594323;

    public static double transformLat(double x, double y) {

        double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));

        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;

        ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;

        ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;

        return ret;

    }

    public static double transformLon(double x, double y) {

        double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));

        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;

        ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;

        ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0 * pi)) * 2.0 / 3.0;

        return ret;

    }

    public static double[] transform(double lat, double lon) {

        if (outOfChina(lat, lon)) {

            return new double[]{lat, lon};

        }

        double dLat = transformLat(lon - 105.0, lat - 35.0);

        double dLon = transformLon(lon - 105.0, lat - 35.0);

        double radLat = lat / 180.0 * pi;

        double magic = Math.sin(radLat);

        magic = 1 - ee * magic * magic;

        double sqrtMagic = Math.sqrt(magic);

        dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);

        dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);

        double mgLat = lat + dLat;

        double mgLon = lon + dLon;

        return new double[]{mgLat, mgLon};

    }

    /**
     * 判断是否在中国
     *
     * @param lat
     * @param lon
     * @return
     */

    public static boolean outOfChina(double lat, double lon) {

        if (lon < 72.004 || lon > 137.8347) {
            return true;
        }

        if (lat < 0.8293 || lat > 55.8271) {
            return true;
        }
        return false;

    }

    /**
     * 84 ==》 高德
     *
     * @param lat
     * @param lon
     * @return
     */

    public static double[] gps84_To_Gcj02(double lat, double lon) {

        if (outOfChina(lat, lon)) {

            return new double[]{lat, lon};

        }

        double dLat = transformLat(lon - 105.0, lat - 35.0);

        double dLon = transformLon(lon - 105.0, lat - 35.0);

        double radLat = lat / 180.0 * pi;

        double magic = Math.sin(radLat);

        magic = 1 - ee * magic * magic;

        double sqrtMagic = Math.sqrt(magic);

        dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);

        dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);

        double mgLat = lat + dLat;

        double mgLon = lon + dLon;

        return new double[]{mgLat, mgLon};

    }

    /**
     * 高德 ==》 84
     *
     * @param lon * @param lat * @return
     */

    public static double[] gcj02_To_Gps84(double lat, double lon) {

        double[] gps = transform(lat, lon);

        double lontitude = lon * 2 - gps[1];

        double latitude = lat * 2 - gps[0];

        return new double[]{latitude, lontitude};

    }

    /**
     * 高德 == 》 百度
     *
     * @param lat
     * @param lon
     */

    public static double[] gcj02_To_Bd09(double lat, double lon) {

        double x = lon, y = lat;

        double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);

        double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);

        double tempLon = z * Math.cos(theta) + 0.0065;

        double tempLat = z * Math.sin(theta) + 0.006;

        double[] gps = {tempLat, tempLon};

        return gps;

    }

    /**
     * 百度 == 》 高德
     *
     * @param lat
     * @param lon
     */

    public static double[] bd09_To_Gcj02(double lat, double lon) {

        double x = lon - 0.0065, y = lat - 0.006;

        double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi);

        double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi);

        double tempLon = z * Math.cos(theta);

        double tempLat = z * Math.sin(theta);

        double[] gps = {tempLat, tempLon};

        return gps;

    }

    /**
     * 84 == 》 百度
     *
     * @param lat
     * @param lon
     * @return
     */

    public static double[] gps84_To_bd09(double lat, double lon) {

        double[] gcj02 = gps84_To_Gcj02(lat, lon);

        double[] bd09 = gcj02_To_Bd09(gcj02[0], gcj02[1]);

        return bd09;

    }

    /**
     * 百度 == 》 84
     *
     * @param lat
     * @param lon
     * @return
     */

    public static double[] bd09_To_gps84(double lat, double lon) {

        double[] gcj02 = bd09_To_Gcj02(lat, lon);

        double[] gps84 = gcj02_To_Gps84(gcj02[0], gcj02[1]);

        // 保留小数点后六位

        gps84[0] = retain6(gps84[0]);

        gps84[1] = retain6(gps84[1]);

        return gps84;

    }

    /*
     *
     * 保留小数点后六位
     *
     * @param num
     *
     * @return
     *
     */

    private static double retain6(double num) {

        String result = String.format("%.6f", num);

        return Double.valueOf(result);

    }

}
