update with proper scene setup

src/viewer.rs

@@ -56,20 +56,21 @@ pub fn apply_viewer_to_projections(
     });
 }
 
-pub fn simulate_viewer(mut query: Query<&mut Viewer>, time: Res<Time>) {
+pub fn simulate_viewer_with_circle(mut query: Query<&mut Viewer>, time: Res<Time>) {
     for mut v in query.iter_mut() {
-        //v.position += Vec3::Y * 0.005;
-        v.alpha += 1.5 * time.delta_seconds();
 
-        let radius = 1.0;
+        let radius = 1.3;
+        let offset = Vec3::new(0.0,0.0,8f32);
+        let speed = 1.0f32;
+
+        v.alpha += speed * time.delta_seconds();
 
-        let z_distance = 3.0_f32;
 
         v.position = Vec3::new(
             v.alpha.sin() * radius,
             v.alpha.cos() * radius,
-            z_distance + v.alpha.sin(),
-        );
+            0.0,
+        ) + offset;
 
         // info!("Viewer {:?}", v.position);
     }