daily update on 20230320 by nitload youmu

2023-03-20 01:45:49 +08:00
parent 167e33a3dd
commit db2ca36fd7
100 changed files with 1211 additions and 746 deletions
@@ -0,0 +1,96 @@
+using System;
+using System.Collections.Generic;
+using System.IO.Compression;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace StgSharp.Math
+{
+    [StructLayout(LayoutKind.Explicit)]
+    public struct matrix2x2:IEquatable<matrix2x2>
+    {
+        [FieldOffset(0)]
+        public vec2d row1;
+        [FieldOffset(8)]
+        public vec2d row2;
+
+
+        public matrix2x2(vec2d c0, vec2d c1)
+        {
+            row1 = c0;
+            row2 = c1;
+        }
+
+        public matrix2x2(
+            float a11,
+            float a12,
+            float a21,
+            float a22
+            )
+        {
+            row1 = new vec2d(a11, a12);
+            row2 = new vec2d(a21, a22);
+        }
+
+        bool IEquatable<matrix2x2>.Equals(matrix2x2 other)
+        {
+            if (this.GetHashCode() != other.GetHashCode())
+            {
+                return false;
+            }
+            else
+            {
+                return
+                    this.row1 == other.row1
+                    && this.row2 == other.row2;
+            }
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (obj == null)
+            {
+                return false;
+            }
+            else if (obj.GetType() != typeof(matrix2x2))
+            {
+                return false;
+            }
+            else
+            {
+                return this.Equals((vec3d)obj);
+            }
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(row1,row2);
+        }
+
+        public override string ToString()
+        {
+            return $"{row1}\n{row2}";
+        }
+
+        public static matrix2x2 operator +(matrix2x2 matrix1 , matrix2x2 matrix2)
+        {
+            return new matrix2x2(
+                matrix1.row1 + matrix2.row1,
+                matrix1.row2 + matrix2.row2
+                );
+        }
+
+        public static matrix2x2 operator -(matrix2x2 matrix1, matrix2x2 matrix2)
+        {
+            return new matrix2x2(
+                matrix1.row1 - matrix2.row1,
+                matrix1.row2 - matrix2.row2
+                );
+        }
+
+        
+
+        
+        
+    }
+}