daily uodate on 20231208 by nitload youmu, preparation for multi thread rendering

源代码/StgSharp/Math/Linear/matrix3x2.cs

@@ -9,11 +9,13 @@ namespace StgSharp.Math
     public struct Matrix3x2
     {
         [FieldOffset(0)] internal Mat2 mat;
+        [FieldOffset(0)] internal vec3d colum0;
+        [FieldOffset(4 * 4)] internal vec3d colum1;
         [FieldOffset(2 * 4 * sizeof(float))] internal Mat3 transpose;
         [FieldOffset(5 * 4 * sizeof(float))] internal bool isTransposed;
 
 
-        public Matrix3x2(
+        public unsafe Matrix3x2(
             float a00, float a01,
             float a10, float a11,
             float a20, float a21
@@ -21,6 +23,11 @@ namespace StgSharp.Math
         {
             mat.colum0 = new Vector4(a00, a10, a20, 0);
             mat.colum0 = new Vector4(a01, a11, a21, 0);
+#if NET5_0_OR_GREATER
+            Unsafe.SkipInit(out colum0);
+            Unsafe.SkipInit(out colum1);
+            Unsafe.SkipInit(out transpose);
+#endif
         }
 
         internal Matrix3x2(
@@ -32,6 +39,11 @@ namespace StgSharp.Math
             mat.colum1 = c1;
         }
 
+        public vec3d VerticalVecMultiply(Vec2d vec)
+        {
+            return colum0 * vec.X + colum1 * vec.Y;
+        }
+
         public unsafe float this[int rowNum, int columNum]
         {
             get