not work

Code/Base/Wheel/Suspension/MacPhersonSuspension.cs

@@ -0,0 +1,32 @@
+using Sandbox;
+using System;
+
+namespace VeloX;
+public class MacPhersonSuspension
+{
+	public readonly Vector3 WheelOffset;
+	public readonly Vector3 UprightTop;
+	public readonly Vector3 UprightAxis;
+	private readonly Hinge Hinge;
+
+	public MacPhersonSuspension( Vector3 wheel, Vector3 strutBody, Vector3 strutWheel, Vector3 hingeBody )
+	{
+		WheelOffset = wheel - strutWheel;
+		UprightTop = strutBody;
+		UprightAxis = (strutBody - strutWheel).Normal;
+		Hinge = new( hingeBody, strutWheel - hingeBody );
+	}
+
+	public void GetWheelTransform( float travel, out Rotation rotation, out Vector3 position )
+	{
+		Vector3 hingeEnd = Hinge.Rotate( travel );
+		Vector3 uprightAxisNew = (UprightTop - hingeEnd).Normal;
+
+		rotation = Rotation.FromAxis(
+			Vector3.Cross( UprightAxis, uprightAxisNew ),
+			MathF.Acos( Vector3.Dot( UprightAxis, uprightAxisNew ) ).RadianToDegree()
+		);
+
+		position = hingeEnd + WheelOffset.Transform( rotation );
+	}
+}