高德GPS坐标转换成平面坐标(C#代码实现方式)

根据高德地图js代码翻译而成，废话不多说直接上代码

        const double VV = 0.15915494309189535;
        const double kW = 0.5;
        const double yW = -0.15915494309189535;
        const double WW = 0.5;
        /// <summary>
        /// 高德地图坐标转平面坐标
        /// </summary>
        /// <param name="lng">经度</param>
        /// <param name="lat">纬度</param>
        /// <param name="zoom">缩放级别</param>
        /// <returns></returns>
        public static (double, double) LnglatToPixel(double lng, double lat, int zoom = 13)
        {
            double b = Math.PI / 180;
            double c = 85.0511287798;
            c = Math.Max(Math.Min(c, lat), -c);
            double x = lng * b;
            double y = Math.Log(Math.Tan(Math.PI / 4 + c * b / 2));
            double scale = 256 << zoom;

            return (scale * (VV * x + kW), scale * (yW * y + WW));
        }
        
        /// <summary>
        /// 平面坐标转高德坐标
        /// </summary>
        /// <param name="x">x坐标</param>
        /// <param name="y">y坐标</param>
        /// <param name="zoom">缩放级别</param>
        public static (double, double) PixelToLnglat(double x, double y, int zoom = 13)
        {
            double scale = 256 << zoom;
            double a = (x / scale - kW) / VV;
            double b = (y / scale - WW) / yW;
            double c = 180 / Math.PI;
            return (a * c, (2 * Math.Atan(Math.Exp(b)) - Math.PI / 2) * c);
        }

效果演示

完美！！