public static (Vector2 center, float radius) Circumcircle(Vector2 a, Vector2 b, Vector2 c)
{
Vector2 SqSub(Vector2 p0, Vector2 p1) => Vector2.Scale(p0, p0) - Vector2.Scale(p1, p1);
Vector2 BA = a - b;
Vector2 CA = a - c;
Vector2 s13 = SqSub(a, c); // the heck is this
Vector2 s21 = SqSub(b, a);
Vector2 noot = BA * (s13.x + s13.y) + CA * (s21.x + s21.y);
Vector2 center = new Vector2(noot.y, -noot.x) / (2 * Mathfs.Determinant(CA, BA));
float boop = -a.x * a.x - a.y * a.y + 2 * center.x * a.x + 2 * center.y * a.y;
float radius = Mathf.Sqrt(center.sqrMagnitude - boop);
return(center, radius);
}