Trying to make object in periphery of camera disappear when player tries to view it directly

Questions & Answers
1

I want the player to see an object in their peripheral vision and when they turn toward it - and object is now in center of the camera - the renderer is turned off and the object now spawns in another area of the screen (or I have multiple objects or it turns back on when player turns away - I plan to use all three). I would like this to be minimally 3D but don’t want to use triggers - just center of view. I know how to turn renderer on and off with mouse but my limited coding skills have me stumped here. Working on raycasts now… Any help most appreciated.

2

What about something using Camera.WorldToScreenPoint?

void Update()
{
   p = Camera.main.WorldToScreenPoint(transform.position);
   if (Mathf.Abs(0.5-p.x) < 0.25 && Mathf.Abs(0.5-p.y) < 0.25)
   {
      this.renderer.enabled = false;
   }
   else
   {
      this.renderer.enabled = true;
   } 
}

The center of the screen should be (0.5, 0.5) and the edges should be at 0 and 1, so you can just check if it’s in some range smaller than 0-1.