Gmsmap视图快速旋转

Question

在这张图片中，GMSMapView有两个标记

1. 绿色标记是取件地点和
2. 红色标记是放置位置标记

我想根据取件位置旋转地图视图，取件地点想从地图视图的左侧开始，放置位置想放在地图视图的右侧

旋转：使用委托方法或任何自定义方法GMSMapView

https://i.stack.imgur.com/Re5Mp.png

Answer 1

你可以这样尝试

extension FloatingPoint {
var degreesToRadians: Self { return self * .pi / 180 }
var radiansToDegrees: Self { return self * 180 / .pi }
}

在视图控制器中

func getHeadingForDirection(fromCoordinate fromLoc: CLLocationCoordinate2D, toCoordinate toLoc: CLLocationCoordinate2D) -> Float {
let fLat: Float = Float((self.mapView.camera.target.latitude).degreesToRadians)
let fLng: Float = Float((self.mapView.camera.target.longitude).degreesToRadians)
let tLat: Float = Float((fromLoc.latitude).degreesToRadians)
let tLng: Float = Float((fromLoc.longitude).degreesToRadians)
let degree: Float = (atan2(sin(tLng - fLng) * cos(tLat), cos(fLat) * sin(tLat) - sin(fLat) * cos(tLat) * cos(tLng - fLng))).radiansToDegrees
if degree >= 0 {
return degree
} else {
return 360 + degree
}
}

In mapView(_ mapView： GMSMapView， idleAt position： GMSCameraPosition(

self.mapView.animate(toBearing: CLLocationDirection((self.getHeadingForDirection(fromCoordinate: self.pickUpMarker.position, toCoordinate: self.dropOffMarker.position) + 100) ))