Crosshair Not Working

[huntsfromshadow]

Hello,

Trying to work on a project that requires a corsshair in the 2D NGUI View moving over a 3d object,
and detecting it's over that object.

I'm trying to do it with raycasts, but having no luck.  If I move the crosshair over the objet and trigger the routine I don't get a hit, but if I move the crosshair further up and over I can get it to show a hit, but oviously on screen the crosshair is not over the object.

Any thoughts?  I'll admit Raycasts are not something I'm very familiar with so this could be just a stupid mistake.

Thanks

For reference the script is located on the crosshair UISprite Object, and the only other gameobject is a 3d cube as a test target.
UICamera is the NGUI 2D Camera inside UIRoot.

1. bool isCrossHairOverTarget() {
2.  
3.     Vector3 pos = UICamera.mainCamera.WorldToViewportPoint(transform.localPosition);
4.     Vector3 endpos = Camera.main.ViewportToWorldPoint(pos);
5.  
6.     Ray r = Camera.main.ViewportPointToRay(endpos);
7.     RaycastHit rh = new RaycastHit();
8.  
9.     Debug.DrawRay (r.origin, r.direction * 10, Color.yellow, 5.0f);
10.     if(Physics.Raycast(r, out rh)) {
11.         return true;
12.     }
13.     else {
14.         return false;
15.     }
16. }

[ArenMook]

Vector3 pos = UICamera.mainCamera.WorldToViewportPoint(transform.localPosition);

You're calling a "World" function, while feeding it a "Local" position...

1. Convert transform.position to viewport point.
2. Camera.main.ViewportPointToRay the value from step 1.
3. Use the ray to raycast.