Drawing lines from mouse position

Questions & Answers
1

How do you draw lines from mouse position using lineRenderer?

For some reason, I cannot seem to get the line to be oriented correctly relative to the camera.

2

Tested and updated to fix errors

using System.Collections.Generic;
using UnityEngine;

[RequireComponent(typeof(LineRenderer))]
public class LineRendererTest : MonoBehaviour
{
	List<Vector3> linePoints = new List<Vector3>();
	LineRenderer lineRenderer;
	public float startWidth = 1.0f;
	public float endWidth = 1.0f;
	public float threshold = 0.001f;
	Camera thisCamera;
	int lineCount = 0;

	Vector3 lastPos = Vector3.one * float.MaxValue;
	
	
	void Awake()
	{
		thisCamera = Camera.main;
		lineRenderer = GetComponent<LineRenderer>();
	}

	void Update()
	{
		Vector3 mousePos = Input.mousePosition;
		mousePos.z = thisCamera.nearClipPlane;
		Vector3 mouseWorld = thisCamera.ScreenToWorldPoint(mousePos);
		
		float dist = Vector3.Distance(lastPos, mouseWorld);

		if(dist <= threshold)
			return;
		
		lastPos = mouseWorld;
		if(linePoints == null)
			linePoints = new List<Vector3>();
		linePoints.Add(mouseWorld);
		
		UpdateLine();
	}


	void UpdateLine()
	{
		lineRenderer.SetWidth(startWidth, endWidth);
		lineRenderer.SetVertexCount(linePoints.Count);

		for(int i = lineCount; i < linePoints.Count; i++)
		{
			lineRenderer.SetPosition(i, linePoints*);*

  •  }*

  •  lineCount = linePoints.Count;*
  • }*
    }
3

hi guys. i tried to modify this example so that when i clicked the mouse, line class adds a new GameObject every time and when i release line stays in world and when i click mouse again new line is added. how can i achieve this?