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Assets/3rd/LBSBaidu/Scripts/LBSUtl.cs

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+using System;
+using System.Collections;
+using UnityEngine;
+using Coolape;
+
+public static class LBSUtl
+{
+    //将tile(瓦片)坐标系转换为LatLngt(地理)坐标系，pixelX，pixelY为图片偏移像素坐标
+    public static LatLng TileXYToLatLng(int tileX, int tileY, int zoom, int pixelX = 0, int pixelY = 0)
+    {
+        double size = Math.Pow(2, zoom);
+        double pixelXToTileAddition = pixelX / 256.0;
+        double lng = (tileX + pixelXToTileAddition) / size * 360.0 - 180.0;
+
+        double pixelYToTileAddition = pixelY / 256.0;
+        double lat = Math.Atan(Math.Sinh(Math.PI * (1 - 2 * (tileY + pixelYToTileAddition) / size))) * 180.0 / Math.PI;
+        return new LatLng(lng, lat);
+    }
+
+    //将LatLngt地理坐标系转换为tile瓦片坐标系，pixelX，pixelY为图片偏移像素坐标
+    public static void LatLngToTileXY(LatLng latlng, int zoom, out int tileX, out int tileY, out int pixelX, out int pixelY)
+    {
+        double size = Math.Pow(2, zoom);
+        double x = ((latlng.Longitude + 180) / 360) * size;
+        double lat_rad = latlng.Latitude * Math.PI / 180;
+        double y = (1 - Math.Log(Math.Tan(lat_rad) + 1 / Math.Cos(lat_rad)) / Math.PI) / 2;
+        y = y * size;
+
+        tileX = (int)x;
+        tileY = (int)y;
+        pixelX = (int)((x - tileX) * 256);
+        pixelY = (int)((y - tileY) * 256);
+    }
+
+}
+
+
+public class LatLng
+{
+    public double Longitude = 0;
+    public double Latitude = 0;
+    public LatLng(double Longitude, double Latitude)
+    {
+        this.Longitude = Longitude;
+        this.Latitude = Latitude;
+    }
+    public override string ToString()
+    {
+        return "Longitude:" + Longitude + ", Latitude:" + Latitude;
+    }
+}