重构并增加HitTest

Spine/Implementations/V36/Attachments/PointAttachment36.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Spine.Implementations.V36;
+using Spine.Interfaces;
+using Spine.Interfaces.Attachments;
+using SpineRuntime36;
+
+namespace Spine.Implementations.V36.Attachments
+{
+    internal sealed class PointAttachment36(PointAttachment innerObject) : 
+        Attachment36(innerObject), 
+        IPointAttachment
+    {
+        private readonly PointAttachment _o = innerObject;
+
+        public override PointAttachment InnerObject => _o;
+
+        public override int ComputeWorldVertices(ISlot slot, ref float[] worldVertices)
+        {
+            if (slot is Slot36 st)
+            {
+                if (worldVertices.Length < 2) worldVertices = new float[2];
+                _o.ComputeWorldPosition(st.InnerObject.Bone, out worldVertices[0], out worldVertices[1]);
+                return 2;
+            }
+            throw new ArgumentException($"Invalid slot type. Expected {nameof(Slot36)}, but received {slot.GetType().Name}", nameof(slot));
+        }
+    }
+}