daily uodate on 20240411 by nitload youmu, camera complete

源代码/StgSharp/Math/Linear/vec4d.cs

@@ -34,6 +34,7 @@ using StgSharp.Math;
 using System;
 using System.Data.Common;
 using System.Numerics;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 namespace StgSharp.Math
@@ -58,6 +59,11 @@ namespace StgSharp.Math
         [FieldOffset(8)] public float Z;
         [FieldOffset(12)] public float W;
 
+        public override string ToString()
+        {
+            return vec.ToString();
+        }
+
         public vec4d(float x, float y, float z, float w)
         {
             vec = new Vector4(x, y, z, w);
@@ -68,5 +74,17 @@ namespace StgSharp.Math
             return vec.reg;
         }
 
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static vec4d operator *(Matrix44 mat, vec4d vec) 
+        {
+            mat.InternalTranspose();
+            return new vec4d(
+                Vector4.Dot( mat.transpose.colum0,vec.vec),
+                Vector4.Dot( mat.transpose.colum1, vec.vec),
+                Vector4.Dot( mat.transpose.colum2, vec.vec),
+                Vector4.Dot( mat.transpose.colum3, vec.vec)
+                );
+        }
+
     }
 }