高德地图获得角度

//传入两个经纬度点得到车辆角度 设置车辆Marker角度
getAngle(startPoint, endPoint) {if (!(startPoint && endPoint)) {return 0;}let dRotateAngle = Math.atan2(Math.abs(startPoint.lng - endPoint.lng),Math.abs(startPoint.lat - endPoint.lat));console.log("1111dRotateAngle=", dRotateAngle);if (endPoint.lng >= startPoint.lng) {if (endPoint.lat >= startPoint.lat) {} else {dRotateAngle = Math.PI - dRotateAngle;}} else {if (endPoint.lat >= startPoint.lat) {dRotateAngle = 2 * Math.PI - dRotateAngle;} else {dRotateAngle = Math.PI + dRotateAngle;}}dRotateAngle = (dRotateAngle * 180) / Math.PI;console.log("2222dRotateAngle=", dRotateAngle);return dRotateAngle;
},