daily update on 20230830

源代码/StgSharp/Math/Linear/mat3.cs

@@ -1,7 +1,7 @@
 using StgSharp.Math;
-using StgSharp.StgSharp.Math;
 using System;
 using System.Numerics;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 namespace StgSharp
@@ -9,6 +9,14 @@ namespace StgSharp
     internal static unsafe partial class internalIO
     {
 
+        #region det
+
+        [DllImport("StgsharpGraphic", EntryPoint = "det_mat3",
+            CallingConvention = CallingConvention.Cdecl)]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        internal static extern unsafe float det_mat3(Mat3* mat);
+
+        #endregion
 
         #region transpose
 
@@ -34,7 +42,7 @@ namespace StgSharp
 namespace StgSharp.Math
 {
     [StructLayout(LayoutKind.Explicit, Size = 12 * sizeof(float), Pack = 16)]
-    internal struct Mat3
+    internal struct Mat3 : IEquatable<Mat3>
     {
 
         [FieldOffset(0)] internal Vector4 colum0;
@@ -56,4 +64,29 @@ namespace StgSharp.Math
         [FieldOffset(10 * sizeof(float))] internal float m22;
         [FieldOffset(11 * sizeof(float))] internal float m32;
 
+        public override bool Equals(object? obj)
+        {
+            return obj is Mat3 mat && Equals(mat);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool Equals(Mat3 other)
+        {
+            return colum0.Equals(other.colum0) &&
+                   colum1.Equals(other.colum1) &&
+                   colum2.Equals(other.colum2);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool operator ==(Mat3 left, Mat3 right)
+        {
+            return left.Equals(right);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool operator !=(Mat3 left, Mat3 right)
+        {
+            return !(left == right);
+        }
     }
+}