private float CalculateDistance(UnityEngine.Rect rect, NormalizedLandmark a, NormalizedLandmark b) { var aPos = rect.GetPoint(a, rotationAngle, isMirrored); var bPos = rect.GetPoint(b, rotationAngle, isMirrored); aPos.z = 0.0f; bPos.z = 0.0f; return(Vector3.Distance(aPos, bPos)); }