add project files

Assets/Scripts/Toolkit/OHM/UnityToolkit/UIUtils.cs

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+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+
+namespace OHM.UnityToolkit
+{
+	public static class UIUtils
+	{
+		public static void AlignToWorldObject(Transform worldObject, RectTransform uiObjectToAlign)
+		{
+			if (worldObject != null)
+			{
+				AlignToWorldPosition(worldObject.position, uiObjectToAlign);
+			}
+		}
+
+		public static void AlignToWorldPosition(Vector3 targetWorldPosition, RectTransform uiObjectToAlign)
+		{
+			Camera cam = Camera.main;
+			if (cam == null || uiObjectToAlign == null)
+			{
+				return;
+			}
+			Canvas canvas = uiObjectToAlign.GetComponentInParent<Canvas>();
+			if (canvas == null)
+			{
+				return;
+			}
+			RectTransform canvasRect = canvas.GetComponent<RectTransform>();
+			Vector3 viewport = cam.WorldToViewportPoint(targetWorldPosition);
+			Vector2 canvasSize = canvasRect.sizeDelta;
+			uiObjectToAlign.anchoredPosition = new Vector2(
+				(viewport.x - canvasRect.pivot.x) * canvasSize.x,
+				(viewport.y - canvasRect.pivot.y) * canvasSize.y);
+		}
+
+		public static bool IsInputBlocked(Vector2 inputPos)
+		{
+			var pointer = new PointerEventData(EventSystem.current);
+			pointer.position = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
+			var results = new List<RaycastResult>();
+			EventSystem.current.RaycastAll(pointer, results);
+			for (int i = 0; i < results.Count; i++)
+			{
+				GameObject go = results[i].gameObject;
+				if (go.GetComponent<Button>() != null)
+				{
+					return true;
+				}
+				if (go.GetComponent<UIInputBlocker>() != null)
+				{
+					return true;
+				}
+			}
+			return false;
+		}
+
+	}
+}