using UnityEngine;

namespace Artngame.SKYMASTER
{
	public static class Vector2Extension
	{
		public static float SignedAngle(this Vector2 v1, Vector2 v2)
		{
			Vector2 normalized = v1.normalized;
			Vector2 normalized2 = v2.normalized;
			float num = Vector2.Dot(normalized, normalized2);
			if (num > 1f)
			{
				num = 1f;
			}
			if (num < -1f)
			{
				num = -1f;
			}
			float num2 = Mathf.Acos(num);
			if (Vector2.Dot(new Vector2(0f - normalized.y, normalized.x), normalized2) >= 0f)
			{
				return num2;
			}
			return 0f - num2;
		}

		public static Vector2 Rotate(this Vector2 v, float theta)
		{
			float num = Mathf.Cos(theta);
			float num2 = Mathf.Sin(theta);
			float x = v.x * num - v.y * num2;
			float y = v.x * num2 + v.y * num;
			return new Vector2(x, y);
		}
	}
}