Map animations

[Psijic]

Didn't find about animations in samples or manuals (where are they?). How to do the next?

1. Animated zoom. I tried map.mapPosition.setZoom() - no result. Use map.setMapPosition() but it's not animated.
2. Animated map [camera] position moving. Tried map.viewport().moveMap() - no result. Use not animated map.setMapPosition() .
3. Get if map [camera] position is moving at the moment (e.g. user drags the map viewport). cameraPositionState.isMoving in G-Maps

[devemux86]

1,2: map.animator().
3: map.events.bind(UpdateListener) like in PathOverlayActivity, probably listen for Map.MOVE_EVENT

[Psijic]

I need to save map position after it was moved. Could you help with the right event combination shows map position stopped being changed?

  map.events.bind(Map.UpdateListener { e, mapPosition ->
        if (e == Map.MOVE_EVENT || e == Map.ANIM_END)
            viewModel.setCameraPosition(mapPosition.latitude, mapPosition.longitude, mapPosition.zoom)
    })

I hope, there is no need to use double check like first on the action start and second on the action end. This is how I did it with GM Compose:

LaunchedEffect(cameraPositionState.isMoving) {
    if (!cameraPositionState.isMoving) 
   ...
}

[Psijic]

Also not sure why animateZoom uses scaleBy only but not the final zoom level as an option.

[devemux86]

Check for if (e == Map.UPDATE_EVENT), like the MapScaleBarLayer.

[Psijic]

Nope. False positive.

[Psijic]

Something like this is needed ATM:

@Composable
private fun MapMovingProceed(map: Map) {
    var isMoving by remember { mutableStateOf(false) }

    LaunchedEffect(isMoving) {
        if (isMoving) {
            Timber.d("my code here")
        }
    }

    DisposableEffect(map) {
        val listener = Map.UpdateListener { e, mapPosition ->
            when (e) {
                Map.MOVE_EVENT, Map.ANIM_START -> {
                    // Set isMoving to true to indicate that the map is currently moving
                    isMoving = true
                }

                Map.ANIM_END -> {
                    // Check if the map was previously moving (isMoving is true)
                    if (isMoving) {
                        // Reset isMoving to false
                        isMoving = false
                    }
                }
            }
        }

        // Bind the event listener when the Composable is first composed
        map.events.bind(listener)

        // Unbind the event listener when the Composable is no longer in use
        onDispose {
            map.events.unbind(listener)
        }
    }
}