gistfile1.cs

public AnimationCurve _transitionCurve;
public IEnumerator MyCustomTransition(Vector3 orig, Vector3 dest, float duration)
{
    var time = 0.0f;
    var difference = dest - orig;
    while (time <= duration)
    {
        var percentage = Mathf.Clamp01(time / duration);
        var curveValue = _transitionCurve.Evaluate(percentage);
        var pos = orig + curveValue * difference;
        transform.position = pos;

        time += Time.deltaTime;

        yield return null;
    }
}