Converting Mouse Position to World. Stationary Camera.

I wanted to test this out but all code doesn't have "hit" defined. Please help.

This question is old but, in case anyone needs it, there's a way to do this without ray casts.

The last property gives the mouse position projected onto the transform.

     private static Vector3 cursorWorldPosOnNCP {
         get {
             return Camera.main.ScreenToWorldPoint(
                 new Vector3(Input.mousePosition.x, 
                 Input.mousePosition.y, 
                 Camera.main.nearClipPlane));
         }
     }
 
     private static Vector3 cameraToCursor {
         get {
             return cursorWorldPosOnNCP - Camera.main.transform.position;
         }
     }
 
     private Vector3 cursorOnTransform {
         get {
             Vector3 camToTrans = transform.position - Camera.main.transform.position;
             return Camera.main.transform.position + 
                 cameraToCursor * 
                 (Vector3.Dot(Camera.main.transform.forward, camToTrans) / Vector3.Dot(Camera.main.transform.forward, cameraToCursor));
         }
     }

public Camera[] Cam;

public Camera cam1;

public RaycastHit RayHit;

public Ray ray;

public GameObject ObjectHit;

public Vector3 Hitpoint = Vector3.zero;

update ()

{

             Cam = Camera.allCameras;
             cam1 = Cam[0];

             if (cam1 != null)

             {

                 //Cast Ray from Camera through Mouse

                 ray = cam1.ScreenPointToRay(Input.mousePosition);                    

                 if (Physics.Raycast(ray, out RayHit))

                 {

                     ObjectHit = RayHit.transform.gameObject;
                     Hitpoint = RayHit.point;

                     if (ObjectHit != null)

                         Debug.DrawLine(cam1.transform.position, Hitpoint, Color.blue, 0.5f);

                 }

                 //Cast Ray from Camera through Mouse Ends

             }

}

Hitpoint is your new World Coridinates of the mouse pointer. this casts a line from the camera through the mouse pointer. Rember tochange camera to your camera, this is straight from my script Enjoy Exvalid PS YOUR RECAPTCHA-VERIFICATION SYSTEM IS THE WORST THING IVE EVER HAD TO ENDURE IN MY LIFE TO MAKE THIS POST AND EDIT IT REMOVE IT AT ONCE ITS TERRIBLE FIRE WHOEVER MADE IT.