NeomorphButton.kt

@Composable
fun NeomorphButton(
    modifier: Modifier = Modifier
) {
    // [1]
    val buttonState = remember { mutableStateOf(ButtonState.IDLE) }
  
    // [2]
    val fromState = if(buttonState.value == ButtonState.IDLE) {
        ButtonState.PRESSED
    } else {
        ButtonState.IDLE
    }

    val state = transition(
            definition = transitionDefinition {
                state(ButtonState.IDLE) { this[buttonStateProgress] = 0f }
                state(ButtonState.PRESSED) { this[buttonStateProgress] = 1f }

                // [3]
                transition(ButtonState.IDLE to ButtonState.PRESSED,
                        ButtonState.PRESSED to ButtonState.IDLE) {
                    buttonStateProgress using tween()
                }
            },
      
            // [4]
            initState = fromState,
            toState = buttonState.value
    )

    CircleNeomorph(
            state = state, 
            modifier = modifier
      
                  // [5]
                  .pressIndicatorGestureFilter(
                          onStart = { buttonState.value = ButtonState.PRESSED },
                          onStop = { buttonState.value = ButtonState.IDLE }
                  )
    )
}