Top,Front,Left,Right views using orthographic camera & OrbitControls

Questions
1

I am new to three.js, working on multiple views like Top ,Front,Right,Left Views based on click (buttons).

ISSUES :

  1. Issues with setting to show object in centre of screen with zoom.
  2. Setting back position of object to default.

Any corrections would be helpful/appreciated.

Js Fiddle Link: https://jsfiddle.net/suraj_js/a6Lq9n4d/17/

Refrence link : https://threejs.org/examples/#webgl_loader_obj2