javascript - GMap 轴承旋转平稳运动(改变轴承值时避免抖动效果)

Question

我想通过改变方位 Angular 值来旋转 GMap，因此相机围绕中心点旋转(360 度一整圈)。 当我们改变方位时，在相机的起点和终点会有缓和效果。我如何控制/更改它以便在更改时使旋转平滑 Bearing值(为了 360 度旋转 map ，流畅的动画)？

所有语言都需要这个，因为看起来缓动效果在不同的语言库中是不同的。例如Swift、Android、PHP、JS、Node.js、React。

Swift 示例(在线性动画中运行正常):

请注意，最初动画在 iOS 中也有抖动，但当我们使用 CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear 时沿着它的CATransaction属性然后 GMap 动画变成流畅的动画。所以现在如果你看到下面的代码，Bearing 中的变化值不会产生抖动效果(由于 GMap 动画中的缓动效果)。我正在为 Android 寻找合适的解决方案和 Web

//Move the map around current location, first loop
let timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
CATransaction.begin()
CATransaction.setValue(3.0, forKey: kCATransactionAnimationDuration)
CATransaction.setAnimationTimingFunction(timingFunction)
CATransaction.setCompletionBlock({
    //Move the map around current location, second loop
    let timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
    CATransaction.begin()
    CATransaction.setValue(3.0, forKey: kCATransactionAnimationDuration)
    CATransaction.setAnimationTimingFunction(timingFunction)
    CATransaction.setCompletionBlock({
        //Move the map around current location, third loop
        let timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
        CATransaction.begin()
        CATransaction.setValue(3.0, forKey: kCATransactionAnimationDuration)
        CATransaction.setAnimationTimingFunction(timingFunction)
        CATransaction.setCompletionBlock({
            UIView.animate(withDuration: 0.5, animations: {
                self.findingYourLocation.alpha = 0.0
            })
            //TODO: Set nearest branch
            // Zoom in one zoom level
            let zoomCamera = GMSCameraUpdate.zoomIn()
            self.mapView.animate(with: zoomCamera)

            // Center the camera on UBL Branch when animation finished
            //let nearestBranch = CLLocationCoordinate2D(latitude: 24.850751, longitude: 67.016589)
            let nearestBranch = CLLocationCoordinate2D.init(latitude: 24.806849, longitude: 67.038734)
            let nearestBranchCam = GMSCameraUpdate.setTarget(nearestBranch)



            CATransaction.begin()

            let timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
            CATransaction.setValue(3.0, forKey: kCATransactionAnimationDuration)
            CATransaction.setAnimationTimingFunction(timingFunction)
            CATransaction.setCompletionBlock({
                self.nextButton.alpha = 1.0
            })
            self.mapView.animate(with: nearestBranchCam)
            self.mapView.animate(toZoom: 15)
            self.mapView.animate(toBearing: 0)
            self.mapView.animate(toViewingAngle: 0)

            CATransaction.commit()

        })
        self.mapView.animate(toBearing: self.mapView.camera.bearing + 120)
        CATransaction.commit()

    })
    self.mapView.animate(toBearing: self.mapView.camera.bearing + 120)
    CATransaction.commit()

})
self.mapView.animate(toBearing: self.mapView.camera.bearing + 120)
CATransaction.commit()

Android示例代码(有问题):

Android 示例/示例代码可在此处找到:https://issuetracker.google.com/issues/71738889

其中还包括 .apk文件，一个 .mp4示例应用程序输出的视频。当 Bearing 时，这清楚地显示了生涩的效果。 360 度旋转 map 时值会发生变化。

Answer 1

将此作为评论作为答案将很难阅读；这是取自 google documentation .

考虑这段代码:

CameraPosition cameraPosition = new CameraPosition.Builder()
    .target(MOUNTAIN_VIEW)      // Sets the center of the map to Mountain View
    .zoom(17)                   // Sets the zoom
    .bearing(90)                // Sets the orientation of the camera to east
    .tilt(30)                   // Sets the tilt of the camera to 30 degrees
    .build();                   // Creates a CameraPosition from the builder
map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));

这段代码创建了一个新的相机位置，而这正是您要改变的:相机的方位。因此，如果您像这样创建一个新的相机位置:

CameraPosition cameraPosition = new CameraPosition.Builder()
    .bearing(50)
    .build();

然后将相机动画到该位置:

map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));

这应该可以解决问题。要提供有关您需要用作轴承的更多信息:

a bearing of 90 degrees results in a map where the upwards direction points due east.

祝你好运。