Unity LineRenderer Kullanımı

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class olcumYap : MonoBehaviour
{
private LineRenderer lineRend;
private Vector2 mousePos;
private Vector2 startMousePos;

[SerializeField]
private Text distanceText;

private float distance;
// Start is called before the first frame update
void Start()
{
lineRend = GetComponent<LineRenderer>();
lineRend.positionCount = 2;
}

// Update is called once per frame
void Update()
{
if (Input.GetMouseButtonDown(0))
{
startMousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
}
if (Input.GetMouseButton(0))
{
mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
lineRend.SetPosition(0, new Vector3(startMousePos.x, startMousePos.y, 0f));
lineRend.SetPosition(1, new Vector3(mousePos.x, mousePos.y, 0f));
distance = (mousePos - startMousePos).magnitude;
distanceText.text = distance.ToString("F2") + "metre";
}
}
}