LineRenderer. Problem with ray displaying

Question

Hello. What am I doing wrong? Here is the code and screenshots with my problem( When the beam hits the object, it is reduced. P.S. Im not use WorldSpace coordinate

 public class Emitter : MonoBehaviour {
 
     private LineRenderer lr;
 
 
     void Start ()
     {
         lr = GetComponent<LineRenderer>();
     }
     
     void Update ()
     {
         RaycastHit hit;
         if (Physics.Raycast(transform.position, transform.forward, out hit))
         {
             if (hit.collider)
             {
                 lr.SetPosition(1, new Vector3(0, 0, hit.distance));
                 print("Hit: " + hit.distance);
             }
         }
         else
         {
             lr.SetPosition(1, new Vector3(0, 0, 100));
         }
     }
 
 }

alt text

Answer 1

Best Answer

Answer by Fliperamma · Oct 30, 2016 at 08:43 PM

Since you are not using WorldSpace in Line Renderer, you'll need to convert the end position/distance to the Local Space. Something like this:

 float dist = transform.InverseTransformVector(transform.position - hit.point).magnitude;
 lr.SetPosition(1, new Vector3(0, 0, dist));

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Lishin · Oct 31, 2016 at 06:41 AM 0

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Thank you. Works great! But it is strange. I looked and read a lot of lessons and everywhere works as I did in the beginning. $$anonymous$$aybe the information is outdated. Thanks again!

Answer 2

Answer by Lishin · Oct 30, 2016 at 08:21 PM

Update: If i use debug.drawray - hit.distance work perfectly

       if (Physics.Raycast(transform.position, transform.forward, out hit))
             {
                 Vector3 forward = transform.TransformDirection(Vector3.forward) * hit.distance;
                 Debug.DrawRay(transform.position, forward, Color.green);
 ...

alt text

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LineRenderer. Problem with ray displaying

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