working on dynamic wrapping, a good awaiting is on way

2025-11-07 18:22:50 +08:00
parent ec1b8dbd51
commit f959339e18
16 changed files with 447 additions and 355 deletions
@@ -36,8 +36,9 @@ using System.Runtime.InteropServices;

 namespace StgSharp.Mathematics.Graphic
 {
+    [CollectionBuilder(builderType:typeof(Vec4), methodName: nameof(Vec4.FromSpan))]
    [StructLayout(LayoutKind.Explicit, Size = 16, Pack = 16)]
-    public struct Vec4 : IEquatable<Vec4>, IUnmanagedVector<Vec4>
+    public unsafe struct Vec4 : IEquatable<Vec4>, IUnmanagedVector<Vec4, float>
    {

        [FieldOffset(0)] internal unsafe fixed float num[4];
@@ -127,11 +128,33 @@ namespace StgSharp.Mathematics.Graphic
            return left + right;
        }

+        public ReadOnlySpan<float> AsSpan()
+        {
+            return MemoryMarshal.CreateReadOnlySpan(ref reg.Member<float>(0), 4);
+        }
+
        public override bool Equals(object obj)
        {
            return obj is Vec4 v && v == this;
        }

+        public static Vec4 FromSpan(ReadOnlySpan<float> span)
+        {
+            return new Vec4
+            {
+                X = span[0],
+                Y = span[1],
+                Z = span[2],
+                W = span[3]
+            };
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public ReadOnlySpan<float>.Enumerator GetEnumerator()
+        {
+            return AsSpan().GetEnumerator();
+        }
+
        public override int GetHashCode()
        {
            return vec.GetHashCode();
@@ -163,11 +186,8 @@ namespace StgSharp.Mathematics.Graphic
        public static Vec4 operator *(Matrix44 mat, Vec4 vec)
        {
            mat.InternalTranspose();
-            return new Vec4(
-                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));
+            return new Vec4(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));
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]