Add ultimate xr

Assets/UltimateXR/Runtime/Scripts/UI/UnityInputModule/UxrGraphicRaycaster.cs

@@ -0,0 +1,47 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="UxrGraphicRaycaster.cs" company="VRMADA">
+//   Copyright (c) VRMADA, All rights reserved.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+using UltimateXR.Core;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+
+namespace UltimateXR.UI.UnityInputModule
+{
+    /// <summary>
+    ///     Base Unity UI Graphic raycaster class.
+    /// </summary>
+    public abstract class UxrGraphicRaycaster : GraphicRaycaster
+    {
+        #region Public Methods
+
+        /// <summary>
+        ///     Checks whether the raycast result describes a collision against a 2D or 3D object.
+        /// </summary>
+        /// <param name="result">Raycast result</param>
+        /// <returns>Whether collision is against a 2D or 3D object</returns>
+        public static bool Is2DOr3DRaycastResult(RaycastResult result)
+        {
+            return result.depth == UxrConstants.UI.Depth2DObject || result.depth == UxrConstants.UI.Depth3DObject;
+        }
+
+        /// <summary>
+        ///     Compares two raycast results.
+        /// </summary>
+        /// <param name="a">Raycast result 1</param>
+        /// <param name="b">Raycast result 2</param>
+        /// <returns>Less than 0 if a is closer than b, 0 if they are at the same distance and greater than 0 if b is closer than a</returns>
+        public static int CompareDepth(RaycastResult a, RaycastResult b)
+        {
+            if (Is2DOr3DRaycastResult(a) || Is2DOr3DRaycastResult(b))
+            {
+                return a.distance.CompareTo(b.distance);
+            }
+
+            return a.depth.CompareTo(b.depth);
+        }
+
+        #endregion
+    }
+}