google map sdk compose 的 infoWindow

 @SuppressLint("UnrememberedMutableState")

@Composable
fun InfoWindow(clusterMaker: ClusterMaker, selectedMarkerState: MarkerState) {

    MarkerInfoWindowComposable(
        state = selectedMarkerState,
        anchor = Offset(0.5f, 1.7f),
        zIndex = 20f,
        onClick = {
            true    //自己控制
        }
    ) {
        Column(
            modifier = Modifier
                .background(Color.White, RoundedCornerShape(8.dp))
                .border(
                    1.dp,
                    colorResource(id = R.color.black).copy(alpha = 0.5f),
                    RoundedCornerShape(8.dp)
                )
                .padding(12.dp)
        ) {
            
            Text(text = (clusterMaker.event.title))
            Text(text = clusterMaker.event.description)
        }
    }
}

定義 base，縮放時維持原固定大小

 //第一種做法

//固定14f與1000公尺，照zoom level 變化
val baseZoomLevel = 14f
val baseRadiusMeters = 1000.0

val dynamicRadius by remember {
    derivedStateOf {
        val currentZoom = cameraPositionState.position.zoom
        val scale = 2.0.pow((baseZoomLevel - currentZoom).toDouble())
        baseRadiusMeters * scale
    }
}

Google Map Compose 地圖限定區域

 var allowedBounds = remember {

    LatLngBounds(
        LatLng(24.9, 121.4), // 西南角 (例如：台北市部分區域)
        LatLng(25.1, 121.6)  // 東北角
    )
}

GoogleMap 的參數 latLngBoundsForCameraTarget = allowedBounds