transform

PveTeam.Math/PveTeam.Mathematics.csproj

@@ -5,4 +5,12 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Compile Remove="TransformD.cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="TransformD.cs" />
+  </ItemGroup>
+
 </Project>

PveTeam.Math/Transform.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+using System.Text;
+
+namespace PveTeam.Mathematics
+{
+    public class Transform
+    {
+        private Matrix4x4 _backingMatrix;
+
+        private Vector3 _position;
+        private Quaternion _rotation;
+        private Vector3 _scale;
+
+        public Vector3 Position
+        {
+            get => _position;
+            set
+            {
+                _position = value;
+                RecalcBackingMatrix();
+            }
+        }
+
+        public Quaternion Rotation
+        {
+            get => _rotation;
+            set
+            {
+                _rotation = value;
+                RecalcBackingMatrix();
+            }
+        }
+
+        public Vector3 Scale
+        {
+            get => _scale;
+            set
+            {
+                _scale = value;
+                RecalcBackingMatrix();
+            }
+        }
+
+        private void RecalcBackingMatrix()
+            => _backingMatrix = Matrix4x4.CreateTranslation(_position) * Matrix4x4.CreateFromQuaternion(_rotation) * Matrix4x4.CreateScale(_scale);
+
+        public static implicit operator Matrix4x4(Transform transform)
+            => transform._backingMatrix;
+
+        public static explicit operator Transform(Matrix4x4 matrix)
+        {
+            return new Transform
+            {
+                _backingMatrix = matrix,
+                _position = new Vector3(matrix.M41, matrix.M42, matrix.M43),
+                _rotation = Quaternion.CreateFromRotationMatrix(matrix),
+                _scale = new Vector3(matrix.M11, matrix.M22, matrix.M33)
+            };
+        }
+    }
+}

PveTeam.Math/TransformD.cs

@@ -0,0 +1,11 @@
+namespace PveTeam.Mathematics
+{
+    public class TransformD
+    {
+        private Matrix4x4D _backingMatrix;
+
+        private Vector3D _position;
+        private QuaternionD _rotation;
+        private Vector3D _scale;
+    }
+}