activity_circular_cards_demo_scene.xml

<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <Transition
        app:constraintSetEnd="@+id/secondCard"
        app:constraintSetStart="@id/start"
        app:duration="1000">
        ...
    </Transition>

    <Transition
        app:constraintSetEnd="@+id/firstCard"
        app:constraintSetStart="@id/start"
        app:duration="1000">
        ...
    </Transition>

    <Transition
        app:constraintSetEnd="@+id/detailCard"
        app:constraintSetStart="@id/start"
        app:duration="1000">
        ...
    </Transition>

    <!-- ================= -->

    <ConstraintSet android:id="@+id/start">
      ...
    </ConstraintSet>

    <ConstraintSet android:id="@+id/secondCard">
      ...
    </ConstraintSet>

    <ConstraintSet android:id="@+id/firstCard">
      ...
    </ConstraintSet>

    <ConstraintSet android:id="@+id/detailCard">
      ...
    </ConstraintSet>
</MotionScene>