Line Renderer Not Showing Game View, works fine in scene view

Unity Engine
,
1

Hi everyone, I am currently making a market exchange simulation for my game, to do this I am using line renderer in 2d, I can’t really find anything on this being a problem and like I said, in scene view it works fine.
The object the line renderer is attached to is on the UI layer and is child of a panel also on the UI layer.

Here is the script I am using, any ideas on why its not working?

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

public class MarketGraphController : MonoBehaviour
{
    public LineRenderer lineRenderer;
    private static float screenBottomDifference = 165f;
    private static float marketHeight = 750f;
    private static float marketStartPosX = 293.5f;
    private static float marketStartPosY = 165f;
    public static float ceiling = marketHeight + screenBottomDifference; // Maximum value
    public static float floor = screenBottomDifference; // Minimum value

    private static float popcornInitialValue = 4.00f;
    private static float popcornCeilingValue = 13.00f;
    private static float popcornFloorValue = 1.00f;
    public int maxPoints = 100;
    public float updateInterval = 0.1f;
    public float volatility = 0.5f;


  
    private float timeElapsed;
    private float currentValue = marketHeight/((popcornCeilingValue - popcornFloorValue) / popcornInitialValue) + marketStartPosY; // Starting value
    private Queue<Vector3> points = new Queue<Vector3>();

    void Start()
    {
        if (lineRenderer == null)
        {
            lineRenderer = GetComponent<LineRenderer>();
        }
        InitializeGraph();
    }

    void Update()
    {
        timeElapsed += Time.deltaTime;
        if (timeElapsed >= updateInterval)
        {
            timeElapsed = 0f;
            UpdateGraph();
        }
    }

    void InitializeGraph()
    {
        lineRenderer.positionCount = 0;
        points.Clear();
        Debug.Log(currentValue.ToString() + " - Current Value On Start");
        AddPoint(new Vector3(marketStartPosX, currentValue, 0));
    }

    void UpdateGraph()
    {
        float changePercent = Random.Range(-volatility, volatility);
        float meanValue = marketHeight/2 + screenBottomDifference; // The value around which the graph fluctuates
        float meanReversionStrength = 0.1f; // Strength of the mean reversion

        currentValue += currentValue * changePercent * 0.01f;
        currentValue += meanReversionStrength * (meanValue - currentValue);

        // Apply ceiling and floor constraints
        currentValue = Mathf.Clamp(currentValue, floor, ceiling);

        AddPoint(new Vector3(points.Count*20 + marketStartPosX, currentValue, 0));
    }

    void AddPoint(Vector3 point)
    {
        if (points.Count >= maxPoints)
        {
            points.Dequeue();
        }

        points.Enqueue(point);
        lineRenderer.positionCount = points.Count;
        lineRenderer.SetPositions(points.ToArray());
    }
}
2

Sounds like you have a bug! Press PLAY, then PAUSE and go digging through your scene. Is the LineRenderer where you expect? Is the Camera where it can see the line? Make another LineRenderer in the running scene, put it in front of the camera, put the same material from your original LineRenderer on it… can you see it?

etc.etc.etc… this is just standard debugging 101.

By debugging you can find out exactly what your program is doing so you can fix it.

Use the above techniques to get the information you need in order to reason about what the problem is.

You can also use Debug.Log(...); statements to find out if any of your code is even running. Don’t assume it is.

Once you understand what the problem is, you may begin to reason about a solution to the problem.

3

Are you calculating the position of your line renderer points in world-space coordinates or in screen space? Have you tried hiding the UI Panel to see if the line is getting drawn behind the panel? If you pause the editor and then doubleclick on the object with the line renderer, it should show you where it is located in the scene.

4

LineRenderer is not a 2D feature so I’ll move your thread to the General Graphics sub-forum and remove the 2D tag.

Thanks.