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 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Math
+{
+    public static unsafe partial class Vector
+    {
+        public static float GetAngle(vec2d vec1, vec2d vec2)
+        {
+            return Calc.ACos(
+                vec1 .multiple(vec2) 
+                / (vec1.GetLength() * vec2.GetLength())
+                );
+        }
+
+        public static float GetAngle(vec3d vec1, vec3d vec2)
+        {
+            return Calc.ACos(
+                vec1 * vec2
+                / (vec1.GetLength() * vec2.GetLength())
+                );
+        }
+
+    }
+}