1 files changed, 54 insertions, 0 deletions

diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/EventSystem/Raycasters/Physics2DRaycaster.cs b/Assets/uGUI-2017.1/UnityEngine.UI/EventSystem/Raycasters/Physics2DRaycaster.cs
new file mode 100644
index 0000000..6346938
--- /dev/null
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/EventSystem/Raycasters/Physics2DRaycaster.cs
@@ -0,0 +1,54 @@
+using System.Collections.Generic;
+using UnityEngine.UI;
+
+namespace UnityEngine.EventSystems
+{
+    /// <summary>
+    /// Simple event system using physics raycasts.
+    /// </summary>
+    [AddComponentMenu("Event/Physics 2D Raycaster")]
+    [RequireComponent(typeof(Camera))]
+    public class Physics2DRaycaster : PhysicsRaycaster
+    {
+        protected Physics2DRaycaster()
+        {}
+
+        // ·ΆΙδΟί
+        public override void Raycast(PointerEventData eventData, List<RaycastResult> resultAppendList)
+        {
+            if (eventCamera == null)
+                return;
+
+            Ray ray;
+            float distanceToClipPlane;
+            ComputeRayAndDistance(eventData, out ray, out distanceToClipPlane);
+
+            if (ReflectionMethodsCache.Singleton.getRayIntersectionAll == null)
+                return;
+
+            var hits = ReflectionMethodsCache.Singleton.getRayIntersectionAll(ray, distanceToClipPlane, finalEventMask);
+
+            if (hits.Length != 0)
+            {
+                for (int b = 0, bmax = hits.Length; b < bmax; ++b)
+                {
+                    var sr = hits[b].collider.gameObject.GetComponent<SpriteRenderer>();
+
+                    var result = new RaycastResult
+                    {
+                        gameObject = hits[b].collider.gameObject,
+                        module = this,
+                        distance = Vector3.Distance(eventCamera.transform.position, hits[b].point),
+                        worldPosition = hits[b].point,
+                        worldNormal = hits[b].normal,
+                        screenPosition = eventData.position,
+                        index = resultAppendList.Count,
+                        sortingLayer =  sr != null ? sr.sortingLayerID : 0,
+                        sortingOrder = sr != null ? sr.sortingOrder : 0
+                    };
+                    resultAppendList.Add(result);
+                }
+            }
+        }
+    }
+}