Continuing action after raycast is not hitting object anymore

Hey, so I'm trying to make a script with which I can rotate a gameobject with my mouse even after the ray is not hitting the inital object anymore. In essence I'm trying to select an object to rotate and not have the rotation stop even if I drag my cursor out of the objects bounds. Here's the script I'm using at the moment, which makes Unity crash:

Code (CSharp):

1. void Update () {
2.        
3.         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
4.         RaycastHit hitInfo;
5.    
6.         if(Input.GetMouseButtonDown(0))
7.         {
8.             if(Physics.Raycast(ray, out hitInfo))
9.             {
10.                 if(hitInfo.collider.gameObject.tag == "rotatable")
11.                 {
12.                     activeRotation();
13.                 }
14.             }
15.         }
16.     }
17.  
18.     void activeRotation()
19.     {
20.         float spinX = Input.GetAxis("Mouse X");
21.         float spinY = Input.GetAxis("Mouse Y");
22.  
23.         while(Input.GetMouseButton(0))
24.         {
25.         gameObject.transform.Rotate(spinX, 0, spinY);
26.         }
27.     }

How could I implement this feature?

 

Quick modifications (not tested..)

Code (CSharp):

1.    
2.  
3. Transform target;
4.  
5.  
6. void Update () {
7.          
8.             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
9.             RaycastHit hitInfo;
10.      
11.             if(!target && Input.GetMouseButtonDown(0))
12.             {
13.                 if(Physics.Raycast(ray, out hitInfo))
14.                 {
15.                     if(hitInfo.collider.gameObject.tag == "rotatable")
16.                     {
17.                         target = hit.transform;
18.                         //activeRotation();
19.                     }
20.                 }
21.             }
22.  
23.             if (target) activeRotation();
24.  
25.             if(target && Input.GetMouseButtonUp(0)) target=null;
26.  
27.         }
28.    
29.         void activeRotation()
30.         {
31.             float spinX = Input.GetAxis("Mouse X");
32.             float spinY = Input.GetAxis("Mouse Y");
33.    
34. //            while(Input.GetMouseButton(0))
35. //            {
36.             target.Rotate(spinX, 0, spinY);
37. //            }
38.         }
39.  

 

Hey, that works! Thanks! That's a better option than what I figured out after posting. I did a bit of a hack where the rotation worked by instantiating an invisible mega collider (which covers the whole screen) at the position of the rotatable object, then making that the parent of the rotatable object and detaching + destroying it on mouse up.

What does the 'if (target) activeRotation();' part basically mean?

 

its basically same as checking if the target is not assigned:

Code (CSharp):

1. if (target!=null) activeRotation();

 

Cool, I think I get it now!