using UnityEngine;

namespace BF
{
	public class UICoordinateHelper : MonoBehaviour
	{
		private Camera uiCamera;
		private Camera mainCamera;
		public float LocalPointX { get; private set; }
		public float LocalPointY { get; private set; }

		public void SetUICamera(Camera camera)
		{
			uiCamera = camera;
		}

		public void SetMainCamera(Camera camera)
		{
			mainCamera = camera;
		}

		public void RectTransformScreenPointToLocalPointInRectangle(float x, float y)
		{
			if (ReferenceEquals(uiCamera, null))
			{
				return;
			}
			Vector2 lp;
            RectTransformUtility.ScreenPointToLocalPointInRectangle(this.transform as RectTransform, new Vector2(x, y), uiCamera, out lp);
            LocalPointX = lp.x;
			LocalPointY = lp.y;
		}

		public void WorldPointToLocalPointInRectangle(float x, float y, float z)
		{
			if (ReferenceEquals(uiCamera, null))
			{
				return;
			}
			if (ReferenceEquals(mainCamera, null))
			{
				return;
			}

			var screenPosition = mainCamera.WorldToScreenPoint(new Vector3(x, y, z));
			Vector2 lp;
            RectTransformUtility.ScreenPointToLocalPointInRectangle(this.transform as RectTransform, new Vector2(screenPosition.x, screenPosition.y), uiCamera, out lp);
            LocalPointX = lp.x;
			LocalPointY = lp.y;
		}
	}
}