how to clear all the elements from the group to up...

# tornadofx

[lazt omen]

how to clear all the elements from the group to update the ui when te event is called?

group {
    minWidth = 400.0
    minHeight = 400.0

    var points = renderCube(GyroQuaternion("none", 0.25, 0.25, 0.25, -1.0))
    println(points.size)
    for (i in points)
        println("${i.x} ${i.y}")
    for (i in points.indices) {
        if ((i + 1) % 4 != 0) {
            line(points[i].x, points[i].y, points[i + 1].x, points[i + 1].y)
                    .addClass(Styles.lineStyle)
        } else {
            line(points[i].x, points[i].y, points[i - 3].x, points[i - 3].y)
                    .addClass(Styles.lineStyle)
        }
    }
    subscribe<Events.EVENT_QUATERNION_READY> { event ->
        val quat = event.quat
        points = renderCube(GyroQuaternion(quat))
        for (i in points)
            println("${i.x} ${i.y}")
        for (i in points.indices) {
            if ((i + 1) % 4 != 0) {
                line(points[i].x, points[i].y, points[i + 1].x, points[i + 1].y)
                        .addClass(Styles.lineStyle)
            } else {
                line(points[i].x, points[i].y, points[i - 3].x, points[i - 3].y)
                        .addClass(Styles.lineStyle)
            }
        }
    }
}

tried using children.removeAll() and clear(). The first has no effect and the second just doesn't update the ui anymore