Question by unity_21erushbrook · Sep 30, 2020 at 01:00 PM · c#raycast 3d vr plane

Get Direction From Raycast

Hi,

I'm not entirely sure how to explain it in the title, but heres what I need to do:

I have a plane in a scene. I fire a raycast at the plane in any of its space. I need to know whether the raycast hit forward, backward, left or right from the center of the plane. I've treid rounding the eulerAngles from the Vector3.Angle() calculation but it just doesn't work.

Heres the code I'm using:

     private void Update()
     {
         if (controllerUtils.GetTriggerDown())
         {
             RaycastHit hitInfo;
             BuildDirection direction;
 
             if (!Physics.Raycast(buildingHand.position, buildingHand.forward, out hitInfo))
             {
                 Debug.Log("Hit nothing");
                 return;
             }
 
             float ddirection = Mathf.Round(Vector3.Angle(hitInfo.collider.gameObject.transform.forward, hitInfo.collider.gameObject.transform.position - hitInfo.point) / 90) * 90;
             Debug.Log(ddirection);
         }
     }

Thanks, Ethan.

edit: sorry for the bad code and variable names. its not this bad in my project, but it wouldn't make sense to have a carbon copy in this question.

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