ui基本完毕，修了一大把的bug

Assets/openFracture/OpenFracture-main/Tests/Runtime/MeshVertexTests.cs

@@ -0,0 +1,21 @@
+using NUnit.Framework;
+using UnityEngine;
+
+public class MeshVertexTests
+{
+    [Test]
+    public void EqualPositionsEqual()
+    {
+        MeshVertex vertexA = new MeshVertex(new Vector3(1, 2, 3), Vector3.up, Vector2.zero);
+        MeshVertex vertexB = new MeshVertex(new Vector3(1, 2, 3), Vector3.up, Vector2.zero);
+        Assert.True(vertexA == vertexB);
+    }
+    
+    [Test]
+    public void DifferentPositionsNotEqual()
+    {
+        MeshVertex vertexA = new MeshVertex(new Vector3(1, 2, 3), Vector3.up, Vector2.zero);
+        MeshVertex vertexB = new MeshVertex(new Vector3(1, 2, 3), Vector3.up, Vector2.zero);
+        Assert.True(vertexA == vertexB);
+    }
+}