daily update on 20230302 by nitload youmu

2023-03-03 00:54:59 +08:00
parent bb71567e51
commit df2af2b2d5
37 changed files with 374 additions and 44 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 * vec2 
+                / (vec1.GetLength() * vec2.GetLength())
+                );
+        }
+
+        public static float GetAngle(Vec3D vec1, Vec3D vec2)
+        {
+            return Calc.ACos(
+                vec1 * vec2
+                / (vec1.GetLength() * vec2.GetLength())
+                );
+        }
+
+    }
+}