using UnityEngine;

public class DebugLine : MonoBehaviour
{
    LineRenderer lr;
    Vector3[] vs = new Vector3[100];
    Vector3[] vs1 = new Vector3[303];
    float startX = -6;
    float len = 12;

    static DebugLine ins;

    void Start()
    {
        ins = this;

        this.lr = this.GetComponent<LineRenderer>();
        for (int i = 0; i < ins.vs.Length; i++) 
        {
            this.vs[i].x = startX + len * i / ins.vs.Length; 
        }

        LineRenderer lr1 = this.transform.GetChild(0).GetComponent<LineRenderer>();
        for (int i = 0; i < ins.vs1.Length; i+=3) 
        {
            this.vs1[i].x = this.vs1[i+1].x = this.vs1[i+2].x = startX + len * i / 3 / this.vs.Length; 
            this.vs1[i+1].y = -0.3f; 
        }
        lr1.SetPositions(this.vs1);
    }

    void OnDestroy()
    {
        if (ins == this) ins = null;
    }

    public static void show(float value) 
    {
        if (ins != null) {
            for (int i = ins.vs.Length - 1; i > 0; i--)
            {
                ins.vs[i].y = ins.vs[i - 1].y;
            }
            ins.vs[0].y = value;
            ins.lr.SetPositions(ins.vs);
        }
    }

    public static void showSteady(float value)
    {
        if (ins != null) {
            Transform t = ins.transform.Find("SteadyLine");
            Vector3 p = t.localPosition;
            p.y = value;
            t.localPosition = p;
        }
    }
}