高德与百度的坐标转换:
// 百度转高德
bd09togcj02 (bd_lng, bd_lat) {
const X_PI = Math.PI * 3000.0 / 180.0
const x = bd_lng - 0.0065
const y = bd_lat - 0.006
const z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * X_PI)
const theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * X_PI)
const gg_lng = z * Math.cos(theta)
const gg_lat = z * Math.sin(theta)
return { lng: gg_lng, lat: gg_lat }
},
// 高德百度坐标
gcj02tobd09 (lng, lat) {
const xsPI = 3.14159265358979324 * 3000.0 / 180.0
const bdlat = Number(lat)
const bdlng = Number(lng)
const z = Math.sqrt(bdlng * bdlng + bdlat * bdlat) + 0.00002 * Math.sin(bdlat * xsPI)
const theta = Math.atan2(bdlat, bdlng) + 0.000003 * Math.cos(bdlng * xsPI)
const bdslng = z * Math.cos(theta) + 0.0065
const bdslat = z * Math.sin(theta) + 0.006
return [bdslng, bdslat]
},