メモ

MKMapViewの directionの取り方と、回転

        let direction = self.mapView!.camera.heading
        let angle : Double = (-1 * direction * Double.pi) / 180
        self.targetView!.transform = CGAffineTransform(rotationAngle: CGFloat(angle))

画像の回転を制御したい

こう書いてしまうと

        self.targetView!.transform = self.targetView!.transform.rotated(by: gesture.rotation)

グリングリン回りすぎる。。

↓

    if(gesture.state == .began || gesture.state == .changed) {
        let roundedRotation = round(gesture.rotation*10)/10
        if(roundedRotation != beforeRotation) { // 回転量を調整する
            self.gisView!.transform = self.gisView!.transform.rotated(by: roundedRotation)
        }
         beforeRotation = roundedRotation
    }

これで無理やり調整。

    let direction = self.mapView!.camera.heading
    if(gesture.state == .began || gesture.state == .changed) {
        // 回転量を調整する
        let roundedRotation = round(gesture.rotation*10)/10
        if(roundedRotation != beforeRotation) {
            self.gisView!.transform = self.gisView!.transform.rotated(by: roundedRotation)
            self.mapView!.camera.heading = direction + CLLocationDirection (gesture.rotation*100) * (-1)
        }
         beforeRotation = roundedRotation
    }

地図も一緒に回転するようにした！