using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;

namespace?ConsoleApp1
{

????public?struct?CTPoint?{
????????public?double?lng;
????????public?double?lat;
????}
????public?class?CoordTransform
????{
????????static?double?x_PI?=?3.14159265358979324?*?3000.0?/?180.0;
????????static?double?PI?=?3.1415926535897932384626;
????????static?double?a?=?6378245.0;
????????static?double?ee?=?0.00669342162296594323;

????????/**
?????????*?百度坐標系?（BD-09）?與?火星坐標系?（GCJ-02）的轉換
?????????*?
?????????*?@param?lng?經度
?????????*?@param?lat?緯度
?????????*/
????????public?static?CTPoint?bd09togcj02（double?bd_lon?double?bd_lat）
????????{
????????????double?x?=?bd_lon?-?0.0065;
????????????double?y?=?bd_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?gg_lng?=?z?*?Math.Cos（theta）;
????????????double?gg_lat?=?z?*?Math.Sin（theta）;

????????????CTPoint?cTPoint;
????????????cTPoint.lat?=?gg_lat;
????????????cTPoint.lng?=?gg_lng;
????????????return?cTPoint;?
????????}

????????/**
?????????*?火星坐標系?（GCJ-02）?與百度坐標系?（BD-09）?的轉換
?????????*?
?????????*?@param?lng?經度
?????????*?@param?lat?緯度
?????????*/
????????public?static?CTPoint?gcj02tobd09（double?lng?double?lat）
????????{
????????????double?z?=?Math.Sqrt（lng?*?lng?+?lat?*?lat）?+?0.00002?*?Math.Sin（lat?*?x_PI）;
????????????double?theta?=?Math.Atan2（lat?lng）?+?0.000003?*?Math.Cos（lng?*?x_PI）;
????????????double?bd_lng?=?z?*?Math.Cos（theta）?+?0.0065;
????????????double?bd_lat?=?z?*?Math.Sin（theta）?+?0.006;??
????????????CTPoint?cTPoint;?
????????????cTPoint.lng?=?bd_lng;
????????????cTPoint.lat?=?bd_lat;
????????????return?cTPoint;
????????}

????????/**
?????????*?WGS84轉GCj02
?????????*?
?????????*?@param?lng?經度
?????????*?@param?lat?緯度
?????????*?@return
?????????*/
????????public?static?CTPoint?wgs84togcj02（double?lng?double?lat）
????????{????????????
????????????double?nLng?=?lng;
????????????double?nLat?=?lat;
????????????if?（!out_of_china（lng?lat））
????????????{
????????????????double?dlat?=?transformlat（lng?-?105.0?lat?-?35.0）;
????????????????double?dlng?=?transformlng（lng?-?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）;
????????????????dlng?=?（dlng?*?180.0）?/?（a?/?Sqrtmagic?*?Math.Cos（radlat）?*?PI）;
????????????????nLng?=?lat?+?dlat;
????????????????nLat?=?lng?+?dlng;
????????????}

????????????CTPoint?cTPoint;
????????????cTPoint.lng?=?nLng;
????????????cTPoint.lat?=?nLat;
????????????return?cTPoint;?
????????}

????????public?static?double?transformlat（double?lng?doub

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4333??2018-09-17?17:16??CoordTransform.java

?????文件???????5061??2018-09-17?17:06??coordtransform.js

?????文件???????5719??2018-09-17?17:35??CoordTransform.cs

-----------?---------??----------?-----??----

????????????????15113????????????????????3