reworked mesh decimation yes

LightlessSync/ThirdParty/Nanomesh/Base/Vector3Comparer.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+
+namespace Nanomesh
+{
+    public class Vector3Comparer : IEqualityComparer<Vector3>
+    {
+        private readonly double _tolerance;
+
+        public Vector3Comparer(double tolerance)
+        {
+            _tolerance = tolerance;
+        }
+
+        public bool Equals(Vector3 x, Vector3 y)
+        {
+            return (int)(x.x / _tolerance) == (int)(y.x / _tolerance)
+                && (int)(x.y / _tolerance) == (int)(y.y / _tolerance)
+                && (int)(x.z / _tolerance) == (int)(y.z / _tolerance);
+        }
+
+        public int GetHashCode(Vector3 obj)
+        {
+            return (int)(obj.x / _tolerance) ^ ((int)(obj.y / _tolerance) << 2) ^ ((int)(obj.z / _tolerance) >> 2);
+        }
+    }
+}