Google地图坐标转GPS

function LatLng2EPoint(lng,lat) {
        return {
            X: parseInt(__transformdata.X.Variable1 * lat + __transformdata.X.Variable2 * lng + (__transformdata.X.Intercept)),
            Y: parseInt(__transformdata.Y.Variable1 * lat + __transformdata.Y.Variable2 * lng + (__transformdata.Y.Intercept))
        };
    }

    var __transformdata = {
        'Lat':{
            Intercept:30.3064952559186,
            Variable1:1.79372620433014E-06,
            Variable2:-2.82986622735035E-06
        },
        'Lng':{
            Intercept:120.035724173649,
            Variable1:1.97695479867385E-06,
            Variable2:3.11653008903285E-06
        },
        'X':{
            Intercept:-38815115.1140346,
            Variable1:278641.868454275,
            Variable2:253011.816784626
        },
        'Y':{
            Intercept:-13893662.2326627,
            Variable1:-176754.724987006,
            Variable2:160372.910704995
        }
    };