diff --git a/src/Mono.cs b/src/Mono.cs
index 6afa12c..b9796ea 100644
--- a/src/Mono.cs
+++ b/src/Mono.cs
@@ -64,8 +64,11 @@ static class Mono
             if (Input.Key(Key.MouseCenter).IsActive())
             {
                 float sx = Input.Mouse.posChange.x;
-                float ssx = Maths.smooth_start(sx);
-                box_pose.orientation *= Quat.FromAngles(0, sx * 180.0f * Time.Stepf, 0);
+                Renderer.CameraRoot *= Matrix.R(
+                    Quat.FromAngles(0, -sx * 180.0f * Time.Stepf, 0)
+                );
+                // orbital_view
+                box_pose.position = Input.Head.position + Input.Head.orientation * V.XYZ(0, -0 * U.cm, -10 * U.cm);
             }
         }
         else