daily update on 20230830

源代码/StgSharp/Math/Linear/mat2.cs

@@ -58,7 +58,7 @@ namespace StgSharp
 namespace StgSharp.Math
 {
     [StructLayout(LayoutKind.Explicit, Size = 12 * sizeof(float), Pack = 16)]
-    internal struct Mat2
+    internal struct Mat2 : IEquatable<Mat2>
     {
 
         [FieldOffset(0)] internal Vector4 colum0;
@@ -84,21 +84,28 @@ namespace StgSharp.Math
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        internal static Mat2 Add(Mat2 left, Mat2 right)
+        public override bool Equals(object? obj)
         {
-            return new Mat2(
-                left.colum0 + right.colum0,
-                left.colum1 + right.colum1
-                );
+            return obj is Mat2 mat && Equals(mat);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        internal static Mat2 Sub(Mat2 left, Mat2 right)
+        public bool Equals(Mat2 other)
         {
-            return new Mat2(
-                left.colum0 - right.colum0,
-                left.colum1 - right.colum1
-                );
+            return colum0.Equals(other.colum0) &&
+                   colum1.Equals(other.colum1);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool operator ==(Mat2 left, Mat2 right)
+        {
+            return left.Equals(right);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool operator !=(Mat2 left, Mat2 right)
+        {
+            return !(left == right);
         }
     }
 }