Composable TopicChip w/animation

topicChip.kt

@Composable
fun TopicChip(topic: Topic, selected: Boolean){
  val radius by animateDpAsState(
    if (selected) 20.dp else 0.dp
   )
   Card(
    shape = RoundedCornerShape(
      topStart = radius
    )
   ){
    ...
   }
}