calculatePan

Returns the change in the centroid location between the previous and the current pointers that are down.

@Composable
fun CalculatePan() {
    val offsetX = remember { mutableStateOf(0f) }
    val offsetY = remember { mutableStateOf(0f) }
    Box(
        Modifier.offset { IntOffset(offsetX.value.roundToInt(), offsetY.value.roundToInt()) }
            .graphicsLayer()
            .background(Color.Blue)
            .pointerInput(Unit) {
                awaitEachGesture {
                    awaitFirstDown()
                    do {
                        val event = awaitPointerEvent()
                        val offset = event.calculatePan()
                        offsetX.value += offset.x
                        offsetY.value += offset.y
                    } while (event.changes.any { it.pressed })
                }
            }
            .fillMaxSize()
    )
}