daily update on 20230320 by nitload youmu

源代码/StgSharp/Linear/Verctor.Cross.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Math
+{
+    public static unsafe partial class Vector
+    {
+
+        public static float Cross(vec2d vec1, vec2d vec2)
+        {
+            return vec1.X * vec2.Y - vec1.Y * vec2.X;
+        }
+
+        public static vec3d Cross(vec3d vec1, vec3d vec2)
+        {
+            return new vec3d(
+                vec1.Y * vec2.Z - vec1.Z * vec2.Y,
+                vec1.X * vec2.Z - vec1.Z * vec2.X,
+                vec1.X * vec2.Y - vec1.Y * vec2.X
+                );
+        }
+    }
+}