From ad89f4965a05d37aeea1481c4ab53e21ab85ca2f Mon Sep 17 00:00:00 2001 From: 于紫祥_1901 <email@yuzixiang_1910> Date: Wed, 12 Aug 2020 09:32:58 +0800 Subject: [PATCH] 风场图update --- src/main/java/com/moral/util/LatLngTransformation.java | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 42 insertions(+), 0 deletions(-) diff --git a/src/main/java/com/moral/util/LatLngTransformation.java b/src/main/java/com/moral/util/LatLngTransformation.java new file mode 100644 index 0000000..db52054 --- /dev/null +++ b/src/main/java/com/moral/util/LatLngTransformation.java @@ -0,0 +1,42 @@ +package com.moral.util; + +import java.util.ArrayList; +import java.util.List; + +public class LatLngTransformation { + private static final double x_pi = 3.14159265358979324 * 3000.0 / 180.0; + /// <summary> +/// ��������������������� GCJ02 ��������������������������������������������� BD09 ������������ +/// </summary> +/// <param name="lat">������</param> +/// <param name="lng">������</param> + public static List Convert_GCJ02_To_BD09(double lat, double lng) + { + List list=new ArrayList(); + double x = lng, 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); + lng = z * Math.cos(theta) + 0.0065; + lat = z * Math.sin(theta) + 0.006; + list.add(lng); + list.add(lat); + return list; + } + /// <summary> +/// ��������������������� BD09 ��������������������� ��������������������� GCJ02 ��������������� +/// </summary> +/// <param name="lat">������</param> +/// <param name="lng">������</param> + public static List Convert_BD09_To_GCJ02(double lat,double lng) + { + List list=new ArrayList(); + double x = lng - 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); + lng = z * Math.cos(theta); + lat = z * Math.sin(theta); + list.add(lng); + list.add(lat); + return list; + } +} -- Gitblit v1.8.0