how can i rotate an object through a script?

So i have a Closet, and the closet have 2 children attached to it, left & right site of the closet to be opened.

So i want a script which will make the left closet side open with -90 degress in the X axis.
And the right closet side should open with +90 degress in the X axis.

i have tried making one but it instantly goes to -90 & +90 and i want it to transition smoothly over to it, like it should take 1.5 seconds to get to -90 & +90.

Long story short: I need something added to the following script linked below which will make it rotate over time instead of instantly going to 90 degress! ^^

Script:

Code (JavaScript):

1. #pragma strict
2.  
3. var theLeftCloset : Transform;
4. var theRightCloset : Transform;
5. var closetIsClosed = true;
6. private var drawGUI = false;
7.  
8. function Update ()
9. {
10.     if (drawGUI == true && Input.GetKeyDown("mouse 0") && closetIsClosed == false)
11.     {
12.         theLeftCloset.transform.Rotate(0, -90, 0);
13.         theRightCloset.transform.Rotate(0, 90, 0);
14.         closetIsClosed = true;
15.     }
16.     else if (drawGUI == true && closetIsClosed == true && Input.GetKeyDown("mouse 0"))
17.     {
18.         theLeftCloset.transform.Rotate(0, 90, 0);
19.         theRightCloset.transform.Rotate(0, -90, 0);
20.         closetIsClosed = false;
21.     }
22. }
23.  
24. function OnTriggerEnter (theCollider : Collider)
25. {
26.     if (theCollider.tag == "Player")
27.     {
28.         drawGUI = true;
29.     }
30. }
31.  
32. function OnTriggerExit (theCollider : Collider)
33. {
34.     if (theCollider.tag == "Player")
35.     {
36.         drawGUI = false;
37.     }
38. }
39.  
40. function OnGUI ()
41. {
42.     if (drawGUI == true)
43.     {
44.         GUI.Box (Rect (Screen.width*0.5-50, Screen.height*0.5-25, 170, 22), "Left click to open the door");
45.     }
46. }

 

You are going to want to use a lerp: http://docs.unity3d.com/ScriptReference/Vector3.Lerp.html

Or use a tweening library like hotween: http://hotween.demigiant.com/

 

Could you make give an example of how to use the lerp with rotation?

 

There's an example of that here. (Note: to make your life easy, you want RotateTowards, not slerp.)