calculateCentroidSize

CalculateCentroidSize

@Composable
fun CalculateCentroidSize() {
    var centroidSize by remember { mutableStateOf(0f) }
    var position by remember { mutableStateOf(Offset.Zero) }
    Box(
        Modifier.drawBehind {
                // Draw a circle where the gesture is
                drawCircle(Color.Blue, centroidSize, center = position)
            }
            .pointerInput(Unit) {
                awaitEachGesture {
                    awaitFirstDown().also { position = it.position }
                    do {
                        val event = awaitPointerEvent()
                        val size = event.calculateCentroidSize()
                        if (size != 0f) {
                            centroidSize = event.calculateCentroidSize()
                        }
                        val centroid = event.calculateCentroid()
                        if (centroid != Offset.Unspecified) {
                            position = centroid
                        }
                    } while (event.changes.any { it.pressed })
                }
            }
            .fillMaxSize()
    )
}