C# 3D Collider Without Fixed Points or use Mesh Filter Instead?

Unity Engine
1

I have a script that randomly draws a Line Renderer into a beam like lightning and I want to implement a 3d collider into the script. But all the 3d colliders except for the mesh collider appear to have fixed points and the LineRenderer isn’t a mesh so it won’t work with the Mesh Collider. There isn’t a 3d version of the Edge Collider either so that’s out. Do I need to convert my script to using a Mesh Filter instead of a Line Renderer or are there 3d Colliders that aren’t fixed?

using UnityEngine;
using System.Collections;

public class BeamShooter : MonoBehaviour {
    // Prefabs
    public Transform beamPoint;
    public Transform beamPointOrigin;
    public LineRenderer lineRndr;
    // Timing
    public float timeToUpdate = 0.05f;
    public float timeToPowerUp = 0.5f;
  
    public int maxNumVertices;
    public int numVertices;
    public float lastUpdate;
  
    // Use this for initialization
        void Awake()
    {
        lineRndr = GetComponent<LineRenderer>();
        numVertices = 0;
        lastUpdate = 0.0f;
    }

    // Update is called once per frame
    void Update () {
        if( Input.GetButton("Fire1") ) {
            if ((Time.time - lastUpdate) < timeToUpdate)
                return;
            lastUpdate = Time.time;
            if(numVertices < maxNumVertices){
                numVertices = Mathf.RoundToInt(Vector3.Distance(transform.position, beamPoint.position));
                beamPoint.Translate(Vector3.forward * 5 * Time.deltaTime * (1.0f / timeToPowerUp));
            }
            Vector3 currentV = transform.localPosition;
            lineRndr.SetVertexCount(numVertices);
            for (int i = 0; i < numVertices; i++) {
                float vfl = (Random.value * 4.0f - 2.0f);
                Vector3 v = new Vector3(
                currentV.x + vfl,
                currentV.y + vfl,
                currentV.z + vfl
                );
                lineRndr.SetPosition(i, v);
                currentV += (beamPoint.localPosition - transform.localPosition) / numVertices;
            }
            lineRndr.SetPosition(0, transform.localPosition);
        }
        if(Input.GetButtonUp("Fire1")){
            numVertices = 0;
            lineRndr.SetVertexCount(0);
            beamPoint.transform.position = beamPointOrigin.position;
        }
    }
}
2

You might want to just do a raycast along the same portion of worldspace that each chunk of the LineRenderer is going, and use that for collisions.