feat: add VectorExtensions(WithX, WithY,...)

Dalamud/Utility/Numerics/VectorExtensions.cs

@@ -0,0 +1,56 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Numerics;
+
+namespace Dalamud.Utility.Numerics;
+
+/// <summary>
+/// Extension methods for vectors.
+/// </summary>
+[SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1600:Elements should be documented", Justification = "Redundant.")]
+public static class VectorExtensions
+{
+    public static Vector4 WithX(this Vector4 v, float x)
+    {
+        return new Vector4(x, v.Y, v.Z, v.W);
+    }
+
+    public static Vector4 WithY(this Vector4 v, float y)
+    {
+        return new Vector4(v.X, y, v.Z, v.W);
+    }
+
+    public static Vector4 WithZ(this Vector4 v, float z)
+    {
+        return new Vector4(v.X, v.Y, z, v.W);
+    }
+
+    public static Vector4 WithW(this Vector4 v, float w)
+    {
+        return new Vector4(v.X, v.Y, v.Z, w);
+    }
+
+    public static Vector3 WithX(this Vector3 v, float x)
+    {
+        return new Vector3(x, v.Y, v.Z);
+    }
+
+    public static Vector3 WithY(this Vector3 v, float y)
+    {
+        return new Vector3(v.X, y, v.Z);
+    }
+
+    public static Vector3 WithZ(this Vector3 v, float z)
+    {
+        return new Vector3(v.X, v.Y, z);
+    }
+
+    public static Vector2 WithX(this Vector2 v, float x)
+    {
+        return new Vector2(x, v.Y);
+    }
+
+    public static Vector2 WithY(this Vector2 v, float y)
+    {
+        return new Vector2(v.X, y);
+    }
+}